TCL added.

.gitignore

@@ -7,6 +7,7 @@
 # trees (generated .c/.h, the mrbc tool, CMake cache) under their own build/ dirs.
 /vendor/mruby/build/
 /vendor/libssh2/build/
+/vendor/tcl/build/
 # ...and mruby's Rake drops a transient per-config lock next to the config (src/mruby/).
 /src/mruby/*.lock
 

API.md

@@ -84,7 +84,7 @@ Share a function by name across contexts and engines.
 |---|---|
 | `calogExport(name: string, fn: fn)` | Publish function `fn` under a global `name`. |
 | `calogUnexport(name: string)` | Remove an exported name. |
-| `calogCall(name: string, ...args: any) -> any` | Call an exported function by name -- works in **every** engine. (An export is also reachable by its bare name -- `exportedFn(args)` -- on Lua/JS/Squirrel/s7, on Ruby at top level (via `method_missing`), and on my-basic case-insensitively (it uppercases identifiers); Wren and Berry always need `calogCall`.) |
+| `calogCall(name: string, ...args: any) -> any` | Call an exported function by name -- works in **every** engine. (An export is also reachable by its bare name -- `exportedFn(args)` -- on Lua/JS/Squirrel/s7, on Ruby at top level (via `method_missing`), on Tcl (via its `unknown` handler), and on my-basic case-insensitively (it uppercases identifiers); Wren and Berry always need `calogCall`.) |
 
 ## fs
 
@@ -208,7 +208,7 @@ out, or the close blocks until the task next returns to the runtime.
 
 | Function | Description |
 |---|---|
-| `taskSpawn(engine: string, code: string) -> handle` | Run a code string on a named engine (`"lua"`, `"js"`, `"squirrel"`, `"mybasic"`, `"berry"`, `"s7"`, `"wren"`, `"mruby"`). |
+| `taskSpawn(engine: string, code: string) -> handle` | Run a code string on a named engine (`"lua"`, `"js"`, `"squirrel"`, `"mybasic"`, `"berry"`, `"s7"`, `"wren"`, `"mruby"`, `"tcl"`). |
 | `taskLoad(baseName: string) -> handle` | Launch a script *file* (engine chosen by extension). |
 | `taskEval(handle: handle, code: string)` | Feed more code into a running task (runs on its thread). |
 | `taskClose(handle: handle)` | Ask a task to stop (cooperative: sets its shutdown flag, then waits for its thread to exit). |

LICENSE.md

@@ -70,6 +70,12 @@ libraries below.
   `vendor/mruby/` (unmodified upstream; license in `vendor/mruby/LICENSE`, contributors
   in `vendor/mruby/AUTHORS`). `libmruby.a` is generated by mruby's own Rake build (needs a
   host Ruby + bison at build time); calog links the resulting static archive.
+- **Tcl 9.0.4** (Tool Command Language) -- Tcl/Tk License (BSD-style, permissive; allows
+  binary-only redistribution, no copyleft). Copyright (c) the Tcl Core Team and contributors.
+  `vendor/tcl/` (unmodified upstream, trimmed to the core: `generic`/`unix`/`compat`/
+  `libtommath`/`library`; license in `vendor/tcl/license.terms`). `libtcl9.0.a` is produced by
+  Tcl's own autoconf build (`configure --disable-shared`, out of tree into `vendor/tcl/build/`);
+  calog links the resulting static archive (`-ldl -lz -lpthread -lm`).
 
 ### Database, network, and cryptography libraries
 

Makefile

@@ -27,8 +27,8 @@ LDFLAGS   = $(SAN)
 
 # Our headers: src/ plus the per-language subdirs. VPATH lets the object rules find
 # a source by name without spelling out its directory.
-INC       = -Isrc -Isrc/lua -Isrc/mybasic -Isrc/squirrel -Isrc/js -Isrc/berry -Isrc/s7 -Isrc/wren -Isrc/mruby -Ilibs
-VPATH     = src:src/lua:src/mybasic:src/squirrel:src/js:src/berry:src/s7:src/wren:src/mruby:libs:tests
+INC       = -Isrc -Isrc/lua -Isrc/mybasic -Isrc/squirrel -Isrc/js -Isrc/berry -Isrc/s7 -Isrc/wren -Isrc/mruby -Isrc/tcl -Ilibs
+VPATH     = src:src/lua:src/mybasic:src/squirrel:src/js:src/berry:src/s7:src/wren:src/mruby:src/tcl:libs:tests
 
 # --- vendored our-basic: calog's fork of MY-BASIC (see vendor/ourbasic/NOTICE) ---
 MBDIR     = vendor/ourbasic
@@ -135,6 +135,20 @@ MRUBYLIBS  = -lm
 $(MRUBYLIB): $(MRUBYCONF)
 	cd $(MRUBYDIR) && MRUBY_CONFIG=$(MRUBYCONF) ruby ./minirake -j4
 
+# --- vendored Tcl 9.0.4 (Tool Command Language). Like libssh2/mruby, libtcl is produced by the
+# engine's own build (autoconf): configure --disable-shared + make the static-lib target, OUT of
+# tree into vendor/tcl/build/ (so the vendored source stays pristine). No host deps beyond a C
+# toolchain; Tcl bundles zlib fallback + libtommath. Apartment threading (one Tcl_Interp per
+# thread, no GIL) is mandatory in 9.0. Links -ldl -lz -lpthread -lm. tcl.h needs no generated
+# header (config is compiled in via -D), so the adapter builds against generic/ + unix/. ---
+TCLDIR   = vendor/tcl
+TCLINC   = -I$(TCLDIR)/generic -I$(TCLDIR)/unix
+TCLLIB   = $(TCLDIR)/build/libtcl9.0.a
+TCLLIBS  = -ldl -lz -lpthread -lm
+
+$(TCLLIB):
+	mkdir -p $(TCLDIR)/build && cd $(TCLDIR)/build && ../unix/configure --disable-shared >/dev/null && $(MAKE) libtcl9.0.a
+
 # --- vendored SQLite (C amalgamation, single file). THREADSAFE=1 (serialized) because
 # the DB natives run inline on many context threads. Links -lm -lpthread. ---
 SQLITEDIR   = vendor/sqlite
@@ -152,19 +166,19 @@ ENETOBJ   = $(foreach n,$(ENETNAMES),obj/enet_$(n).o)
 
 BINS = bin/testBroker bin/testLua bin/testMyBasic bin/testPolyglot bin/testActor \
        bin/testEngineLua bin/testEngineMyBasic bin/testSquirrel bin/testEngineSquirrel bin/testJs bin/testEngineJs \
-       bin/testEngineBerry bin/testEngineS7 bin/testEngineWren bin/testEngineMruby bin/testLoad bin/testDb bin/testNet bin/testTask bin/testExport bin/testJson bin/testTime bin/testFs bin/testCrypto bin/testKv bin/testTimer bin/testPubsub bin/testHttp bin/testHttps bin/embed bin/calog
+       bin/testEngineBerry bin/testEngineS7 bin/testEngineWren bin/testEngineMruby bin/testEngineTcl bin/testLoad bin/testDb bin/testNet bin/testTask bin/testExport bin/testJson bin/testTime bin/testFs bin/testCrypto bin/testKv bin/testTimer bin/testPubsub bin/testHttp bin/testHttps bin/embed bin/calog
 
 all: $(BINS)
 
 # ---- object rules, grouped by flag set (sources resolved via VPATH) ----
 
 # strict C, no threads
-STRICTOBJ = obj/broker.o obj/value.o obj/luaEngine.o obj/squirrelEngine.o obj/jsEngine.o obj/berryEngine.o obj/s7Engine.o obj/wrenEngine.o obj/mrubyEngine.o obj/testBroker.o
+STRICTOBJ = obj/broker.o obj/value.o obj/luaEngine.o obj/squirrelEngine.o obj/jsEngine.o obj/berryEngine.o obj/s7Engine.o obj/wrenEngine.o obj/mrubyEngine.o obj/tclEngine.o obj/testBroker.o
 $(STRICTOBJ): obj/%.o: %.c | obj
 	$(CC) $(COREFLAGS) $(INC) -c -o $@ $<
 
 # strict C, threaded
-THREADOBJ = obj/context.o obj/mybasicEngine.o obj/testActor.o obj/testEngineLua.o obj/testEngineSquirrel.o obj/testEngineJs.o obj/testEngineMyBasic.o obj/testEngineBerry.o obj/testEngineS7.o obj/testEngineWren.o obj/testEngineMruby.o obj/calogHandle.o obj/testDb.o obj/testNet.o obj/testTask.o obj/calogExport.o obj/testExport.o obj/calogJson.o obj/testJson.o obj/calogFs.o obj/testFs.o obj/calogTime.o obj/testTime.o obj/calogKv.o obj/testKv.o obj/testCrypto.o obj/calogTimer.o obj/testTimer.o obj/calogPubsub.o obj/testPubsub.o obj/testHttp.o obj/testSsh.o
+THREADOBJ = obj/context.o obj/mybasicEngine.o obj/testActor.o obj/testEngineLua.o obj/testEngineSquirrel.o obj/testEngineJs.o obj/testEngineMyBasic.o obj/testEngineBerry.o obj/testEngineS7.o obj/testEngineWren.o obj/testEngineMruby.o obj/testEngineTcl.o obj/calogHandle.o obj/testDb.o obj/testNet.o obj/testTask.o obj/calogExport.o obj/testExport.o obj/calogJson.o obj/testJson.o obj/calogFs.o obj/testFs.o obj/calogTime.o obj/testTime.o obj/calogKv.o obj/testKv.o obj/testCrypto.o obj/calogTimer.o obj/testTimer.o obj/calogPubsub.o obj/testPubsub.o obj/testHttp.o obj/testSsh.o
 $(THREADOBJ): obj/%.o: %.c | obj
 	$(CC) $(COREFLAGS) $(INC) -pthread -c -o $@ $<
 
@@ -228,6 +242,11 @@ MRUBYADP = obj/mrubyAdapter.o
 $(MRUBYADP): obj/%.o: %.c | obj $(MRUBYLIB)
 	$(CC) $(ADPFLAGS) $(INC) $(MRUBYINC) -c -o $@ $<
 
+# relaxed C + Tcl headers (tcl.h needs no generated header, so no $(TCLLIB) order dependency).
+TCLADP = obj/tclAdapter.o
+$(TCLADP): obj/%.o: %.c | obj
+	$(CC) $(ADPFLAGS) $(INC) $(TCLINC) -c -o $@ $<
+
 # DB library adapter: relaxed C + SQLite headers, sqlite backend compiled in
 DBADP = obj/calogDb.o
 $(DBADP): obj/%.o: %.c | obj
@@ -241,7 +260,7 @@ $(NETADP): obj/%.o: %.c | obj
 
 # task library: strict C with every engine name compiled in (it references each engine
 # vtable under its CALOG_WITH_* guard), so a task-using binary links all engine archives.
-ENGINEDEFS = -DCALOG_WITH_LUA -DCALOG_WITH_JS -DCALOG_WITH_SQUIRREL -DCALOG_WITH_MYBASIC -DCALOG_WITH_BERRY -DCALOG_WITH_S7 -DCALOG_WITH_WREN -DCALOG_WITH_MRUBY
+ENGINEDEFS = -DCALOG_WITH_LUA -DCALOG_WITH_JS -DCALOG_WITH_SQUIRREL -DCALOG_WITH_MYBASIC -DCALOG_WITH_BERRY -DCALOG_WITH_S7 -DCALOG_WITH_WREN -DCALOG_WITH_MRUBY -DCALOG_WITH_TCL
 TASKADP = obj/calogTask.o
 $(TASKADP): obj/%.o: %.c | obj
 	$(CC) $(COREFLAGS) $(INC) $(ENGINEDEFS) -pthread -c -o $@ $<
@@ -295,7 +314,7 @@ CALOGLIB = obj/value.o obj/broker.o obj/context.o \
            obj/luaAdapter.o obj/luaEngine.o obj/jsAdapter.o obj/jsEngine.o \
            obj/squirrelAdapter.o obj/squirrelEngine.o obj/mybasicAdapter.o obj/mybasicEngine.o \
            obj/berryAdapter.o obj/berryEngine.o obj/s7Adapter.o obj/s7Engine.o obj/wrenAdapter.o obj/wrenEngine.o \
-           obj/mrubyAdapter.o obj/mrubyEngine.o
+           obj/mrubyAdapter.o obj/mrubyEngine.o obj/tclAdapter.o obj/tclEngine.o
 
 lib/libcalog.a: $(CALOGLIB) | lib
 	ar rcs $@ $^
@@ -402,6 +421,9 @@ bin/testEngineWren: obj/testEngineWren.o lib/libcalog.a lib/libwren.a | bin
 bin/testEngineMruby: obj/testEngineMruby.o lib/libcalog.a $(MRUBYLIB) | bin
 	$(CC) $(LDFLAGS) -pthread -o $@ $^ $(MRUBYLIBS)
 
+bin/testEngineTcl: obj/testEngineTcl.o lib/libcalog.a $(TCLLIB) | bin
+	$(CC) $(LDFLAGS) -pthread -o $@ $^ $(TCLLIBS)
+
 # example host: embeds calog + JS via calog.h only, linking the two archives.
 obj/embed.o: examples/embed.c src/calog.h | obj
 	$(CC) $(COREFLAGS) -Isrc -pthread -c -o $@ $<
@@ -417,7 +439,7 @@ bin/embed: obj/embed.o lib/libcalog.a lib/libquickjs.a | bin
 # it); SSLARCH follows the archives that reference it.
 bin/calog: obj/calogMain.o \
            obj/calogCrypto.o obj/calogDbFull.o obj/calogExport.o obj/calogFs.o obj/calogHttp.o obj/calogJson.o obj/calogKv.o obj/calogNet.o obj/calogPubsub.o obj/calogSsh.o obj/calogTask.o obj/calogTime.o obj/calogTimer.o obj/calogHandle.o \
-           lib/libcalog.a lib/liblua.a lib/libquickjs.a lib/libsquirrel.a lib/libmybasic.a lib/libberry.a lib/libs7.a lib/libwren.a $(MRUBYLIB) \
+           lib/libcalog.a lib/liblua.a lib/libquickjs.a lib/libsquirrel.a lib/libmybasic.a lib/libberry.a lib/libs7.a lib/libwren.a $(MRUBYLIB) $(TCLLIB) \
            lib/libsqlite3.a lib/libenet.a $(LIBSSH2LIB) $(DBARCH) | bin
 	$(CC) $(LDFLAGS) -pthread -o $@ $(filter-out $(DBARCH),$^) -Wl,--start-group $(PGARCHIVES) -Wl,--end-group $(MYSQLARCH) $(SSLARCH) -lstdc++ -ldl -lm -lpthread
 
@@ -456,12 +478,12 @@ static: bin/calogStatic
 obj/testLoad.o: tests/testLoad.c src/calog.h | obj
 	$(CC) $(COREFLAGS) -Isrc -pthread $(ENGINEDEFS) -c -o $@ $<
 
-bin/testLoad: obj/testLoad.o lib/libcalog.a lib/liblua.a lib/libquickjs.a lib/libsquirrel.a lib/libmybasic.a lib/libberry.a lib/libs7.a lib/libwren.a $(MRUBYLIB) | bin
-	$(CC) $(LDFLAGS) -pthread -o $@ $^ $(LUALIBS) -lstdc++ -lm $(MRUBYLIBS)
+bin/testLoad: obj/testLoad.o lib/libcalog.a lib/liblua.a lib/libquickjs.a lib/libsquirrel.a lib/libmybasic.a lib/libberry.a lib/libs7.a lib/libwren.a $(MRUBYLIB) $(TCLLIB) | bin
+	$(CC) $(LDFLAGS) -pthread -o $@ $^ $(LUALIBS) -lstdc++ -lm $(MRUBYLIBS) $(TCLLIBS)
 
 # task library test: the task lib names every engine, so (like testLoad) it links them all.
-bin/testTask: obj/testTask.o $(TASKADP) obj/calogHandle.o lib/libcalog.a lib/liblua.a lib/libquickjs.a lib/libsquirrel.a lib/libmybasic.a lib/libberry.a lib/libs7.a lib/libwren.a $(MRUBYLIB) | bin
-	$(CC) $(LDFLAGS) -pthread -o $@ $^ $(LUALIBS) -lstdc++ -lm $(MRUBYLIBS)
+bin/testTask: obj/testTask.o $(TASKADP) obj/calogHandle.o lib/libcalog.a lib/liblua.a lib/libquickjs.a lib/libsquirrel.a lib/libmybasic.a lib/libberry.a lib/libs7.a lib/libwren.a $(MRUBYLIB) $(TCLLIB) | bin
+	$(CC) $(LDFLAGS) -pthread -o $@ $^ $(LUALIBS) -lstdc++ -lm $(MRUBYLIBS) $(TCLLIBS)
 
 # export library test: publish from Lua, call by bare name from Lua + via callExport from JS.
 bin/testExport: obj/testExport.o obj/calogExport.o lib/libcalog.a lib/liblua.a lib/libquickjs.a lib/libsquirrel.a lib/libs7.a lib/libmybasic.a | bin
@@ -510,7 +532,7 @@ obj bin lib:
 test: all
 	./bin/testBroker && ./bin/testLua && ./bin/testMyBasic && ./bin/testPolyglot && \
 	./bin/testActor && ./bin/testEngineLua && ./bin/testEngineMyBasic && ./bin/testSquirrel && ./bin/testEngineSquirrel && \
-	./bin/testJs && ./bin/testEngineJs && ./bin/testEngineBerry && ./bin/testEngineS7 && ./bin/testEngineWren && ./bin/testEngineMruby && ./bin/testLoad && ./bin/testDb && ./bin/testNet && ./bin/testTask && ./bin/testExport && ./bin/testJson && ./bin/testTime && ./bin/testFs && ./bin/testCrypto && ./bin/testKv && ./bin/testTimer && ./bin/testPubsub && ./bin/testHttp && ./bin/testHttps
+	./bin/testJs && ./bin/testEngineJs && ./bin/testEngineBerry && ./bin/testEngineS7 && ./bin/testEngineWren && ./bin/testEngineMruby && ./bin/testEngineTcl && ./bin/testLoad && ./bin/testDb && ./bin/testNet && ./bin/testTask && ./bin/testExport && ./bin/testJson && ./bin/testTime && ./bin/testFs && ./bin/testCrypto && ./bin/testKv && ./bin/testTimer && ./bin/testPubsub && ./bin/testHttp && ./bin/testHttps
 
 # ThreadSanitizer build of the actor core and the Lua engine path (cannot combine
 # with ASan). Recompiled from source under TSan; the vendored Lua objects are
@@ -603,6 +625,15 @@ tsanmruby: $(MRUBYLIB) | bin obj
 		$(MRUBYLIB) $(MRUBYLIBS)
 	setarch -R ./bin/testEngineMrubyTsan
 
+# ThreadSanitizer build of the Tcl engine path. Like tsanmruby, libtcl is a separately-built
+# archive linked UN-sanitized; TSan instruments the calog adapter/engine/actor code, where the
+# cross-context risk lives. Tcl's apartment model gives each thread its own interpreter.
+tsantcl: $(TCLLIB) | bin obj
+	$(CC) $(TSANFLAGS) $(INC) $(TCLINC) -o bin/testEngineTclTsan \
+		tests/testEngineTcl.c src/tcl/tclEngine.c src/tcl/tclAdapter.c $(TSANCORE) \
+		$(TCLLIB) $(TCLLIBS)
+	setarch -R ./bin/testEngineTclTsan
+
 # ThreadSanitizer build of the concurrent libraries (timer's background thread, pubsub's
 # callback fan-out, kv's shared store), each over a Lua context so callbacks marshal across
 # threads. The unsanitized liblua.a links in fine (TSan instruments only the calog code).
@@ -620,4 +651,4 @@ clean:
 -include $(wildcard obj/*.d)
 -include $(wildcard obj/rel/*.d)
 
-.PHONY: all test tsan tsansq tsanjs tsanmb tsanberry tsans7 tsanwren tsanmruby tsanlibs clean
+.PHONY: all test tsan tsansq tsanjs tsanmb tsanberry tsans7 tsanwren tsanmruby tsantcl tsanlibs clean

README.md

@@ -3,8 +3,8 @@
 **C: Any Language, One Gateway.**
 
 calog embeds scripting into a C or C++ program. You register your native C functions
-**once**, and they become callable from **any** embedded engine — Lua, JavaScript, Scheme,
-Squirrel, Wren, Berry, Ruby, or MY-BASIC — with values passed through a single canonical type. Add a new
+**once**, and they become callable from **any** embedded engine -- Lua, JavaScript, Scheme,
+Squirrel, Wren, Berry, Ruby, Tcl, or MY-BASIC -- with values passed through a single canonical type. Add a new
 scripting language to your app by linking one more archive; your native functions don't
 change.
 
@@ -19,7 +19,7 @@ calogContextEval(ctx, "hostLog('hello from JavaScript, ' + 6 * 7)");
 ```
 
 Swap `&calogJsEngine` for `&calogLuaEngine`, `&calogSquirrelEngine`,
-`&calogS7Engine`, `&calogWrenEngine`, `&calogBerryEngine`, `&calogMrubyEngine`, or `&calogMyBasicEngine` — nothing else changes.
+`&calogS7Engine`, `&calogWrenEngine`, `&calogBerryEngine`, `&calogMrubyEngine`, `&calogTclEngine`, or `&calogMyBasicEngine` -- nothing else changes.
 
 ---
 
@@ -27,11 +27,11 @@ Swap `&calogJsEngine` for `&calogLuaEngine`, `&calogSquirrelEngine`,
 
 - **One API, many languages.** Register a native once; call it from every engine.
   `calog.h` is the entire public surface.
-- **One value type.** Everything crosses the boundary as a `CalogValueT` — nil, bool,
+- **One value type.** Everything crosses the boundary as a `CalogValueT` -- nil, bool,
   int, real, binary-safe string, a hybrid list/map aggregate, or a script function
   value. No per-engine glue in your code.
 - **Natives run on your thread, serialized.** A script calling a native is marshalled to
-  the host thread and run there during `calogPump()`, one at a time — so your C code is
+  the host thread and run there during `calogPump()`, one at a time -- so your C code is
   never called concurrently and needs **no locking**. (An opt-in escape hatch runs a
   native inline on the script's thread when you want it.)
 - **Fire-and-forget scripts.** Scripts run on their own context threads; the host stays
@@ -51,15 +51,16 @@ Swap `&calogJsEngine` for `&calogLuaEngine`, `&calogSquirrelEngine`,
 ## Engines
 
 | Engine        | Vtable                 | Extension | Notes                                     |
-|---------------|------------------------|-----------|-----------------------------------------|
+|---------------|------------------------|-----------|-------------------------------------------|
 | Lua 5.4       | `calogLuaEngine`       | `.lua`    |                                           |
-| JavaScript    | `calogJsEngine`        | `.js`     | QuickJS-ng (ES2023+, BigInt → int64)    |
+| JavaScript    | `calogJsEngine`        | `.js`     | QuickJS-ng (ES2023+, BigInt -> int64)     |
 | Squirrel 3.2  | `calogSquirrelEngine`  | `.nut`    | C++ VM                                    |
 | MY-BASIC      | `calogMyBasicEngine`   | `.bas`    | interpreters serialize at load            |
 | Scheme        | `calogS7Engine`        | `.scm`    | s7; 64-bit ints                           |
-| Wren          | `calogWrenEngine`      | `.wren`   | doubles only; call via `Calog.call(…)` |
+| Wren          | `calogWrenEngine`      | `.wren`   | doubles only; call via `Calog.call(...)`  |
 | Berry         | `calogBerryEngine`     | `.be`     | scalars + callbacks                       |
 | Ruby          | `calogMrubyEngine`     | `.rb`     | mruby; 64-bit ints; built by mruby's Rake |
+| Tcl           | `calogTclEngine`       | `.tcl`    | Tcl 9; 64-bit ints; string-typed values   |
 
 A native can return a keyed `CalogValueT` record and **every** engine reads its fields with
 native syntax (`user.name`, `user["name"]`, `(user "name")`), and a script can hand a
@@ -87,7 +88,7 @@ self-contained.
 
 ### Linking your program
 
-Link against `lib/libcalog.a` plus the archive for **each engine you actually use** —
+Link against `lib/libcalog.a` plus the archive for **each engine you actually use** --
 unused engines (and their vendored runtimes) stay out of your binary.
 
 ```sh
@@ -251,7 +252,7 @@ for (;;) {
 }
 ```
 
-Script results come back by **calling natives** — `calogContextEval` doesn't return a
+Script results come back by **calling natives** -- `calogContextEval` doesn't return a
 value. Script errors are delivered to an optional handler on the host thread during
 `calogPump`:
 
@@ -264,7 +265,7 @@ calogSetErrorHandler(calog, onError, NULL);   // default logs to stderr
 
 ### Callbacks: script functions as values
 
-A script can pass you a function. Keep it (retain), call it later, release it when done —
+A script can pass you a function. Keep it (retain), call it later, release it when done --
 calog runs the call on the engine that owns it and returns the result to you:
 
 ```c
@@ -318,7 +319,7 @@ CalogContextT *ctx = calogContextLoad(calog, "config");  // tries config.lua, th
 ```
 
 Or let the build decide which engines exist. Compile the calling file with
-`-DCALOG_WITH_LUA -DCALOG_WITH_JS …` and call the header-inline helper — it registers
+`-DCALOG_WITH_LUA -DCALOG_WITH_JS ...` and call the header-inline helper -- it registers
 exactly the engines you linked, and references no others:
 
 ```c
@@ -330,7 +331,7 @@ CalogContextT *ctx = calogContextLoad(calog, "config");
 
 A `CalogT` is a self-contained runtime; you can create several in one process. Each is
 driven by a host thread, and one thread may drive several by pumping each in turn. Keep
-values and callbacks within a single runtime — they don't cross between runtimes.
+values and callbacks within a single runtime -- they don't cross between runtimes.
 
 ---
 
@@ -381,7 +382,7 @@ uint64_t       calogCurrentId(void);     // 0 on the host thread
 CalogT        *calogCurrent(void);
 ```
 
-Statuses are `CalogStatusE` (`calogOkE`, `calogErrArgE`, `calogErrOomE`, …); `calogOkE`
+Statuses are `CalogStatusE` (`calogOkE`, `calogErrArgE`, `calogErrOomE`, ...); `calogOkE`
 is 0.
 
 ---
@@ -405,7 +406,7 @@ is happy on all kernels.
 src/            core (broker, values, actor) + one subdir per engine (lua, js, squirrel, mybasic)
   calog.h       the entire public API
 tests/          the test programs
-examples/       embed.c — a minimal host
+examples/       embed.c -- a minimal host
 vendor/         vendored engine sources, built from source
 design.md       the full design rationale and internals
 ```
@@ -419,5 +420,5 @@ build system.
 ## License
 
 calog is released under the [MIT License](LICENSE.md). The vendored engines (Lua,
-Duktape, Squirrel, MY-BASIC) each retain their own MIT licenses — see
+Duktape, Squirrel, MY-BASIC) each retain their own MIT licenses -- see
 [`LICENSE.md`](LICENSE.md) for the third-party notices.

design.md

@@ -1078,3 +1078,48 @@ adapter/engine/actor code (like `tsanlibs` with Lua); each VM is single-threaded
 cross-thread lambda callback, the error handler, three concurrent `mrb_state`s), ASan-clean;
 `tsanmruby` clean; cross-engine both ways (Ruby calling a Lua export, Lua invoking a Ruby lambda
 export); `make test` 29/29.
+
+## 20. Tcl -- the ninth engine (Tool Command Language)
+
+**Tcl** (`.tcl`, `calogTclEngine`) is the second engine whose static library is produced by the
+engine's own build rather than compiled from vendored `.c`: Tcl 9.0.4's autoconf (`configure
+--disable-shared`, out of tree into `vendor/tcl/build/`) emits `libtcl9.0.a` with no host deps beyond
+a C toolchain -- Tcl bundles its own zlib fallback and libtommath. Two build facts mattered: `make
+libtcl9.0.a` pulls in the zipfs library-embed step, so `vendor/tcl/library/` must be present
+(over-trimming it broke the build); and calog never calls `Tcl_Init`, because the whole core language
+(`proc`/`if`/`expr`/`string`/`list`/`dict`/...) is C built-ins registered by `Tcl_CreateInterp` -- so
+the on-disk script library (init.tcl) is not needed. Linked footprint is ~2 MB.
+
+Concurrency is the reason Tcl was chosen: its apartment model -- one `Tcl_Interp` per thread, no
+global interpreter lock -- IS calog's actor model. Each context creates its interp on its own thread
+and never shares it; the one process-global init (`Tcl_FindExecutable` + caching the internal-rep type
+pointers) runs once under `pthread_once`, and each context thread runs `Tcl_FinalizeThread` at
+teardown. Natives are Tcl commands bound to one trampoline (the name is `objv[0]`, the context rides
+on per-interp assoc data), so `cryptoUuid` is callable bare.
+
+The value model is the interesting part. Tcl is "everything is a string", so egress cannot read the
+canonical type off a bare value: `tclToValue` dispatches on the `Tcl_Obj` internal representation
+(`typePtr`, cached by minting a sample of each -- `Tcl_GetObjType` returns NULL for "int"/"bytearray"
+in 9.0) for int64 (`Tcl_WideInt`), double, Tcl list <-> list, and Tcl dict <-> map. For a value with a
+string (or no) rep it applies Tcl's own coercion -- a pure integer/real string becomes a number, so
+`enetHost 8080` works -- otherwise a string. The documented EIAS losses: nil has no Tcl analogue and
+round-trips to the empty string, and bool round-trips to 0/1. Binary-safe strings map to byte-array
+objects (`Tcl_NewByteArrayObj`), since Tcl's string rep is UTF-8, not NUL-safe.
+
+Callbacks cross both ways on commands, with no custom `Tcl_ObjType`. A foreign `CalogFnT` (in
+`tclFromValue`) or a Tcl command prefix wrapped by the adapter's `calogCallback` command both become a
+`calogFn<N>` command whose objProc is `tclForeignCmd` and whose clientData is the `CalogFnT` (released
+by the command's delete proc -- Tcl commands carry per-registration data, unlike mruby's `mrb_func_t`).
+The command NAME is the value the script holds -- it calls `$fn a b` -- and `tclToValue` recognizes
+such a name (`Tcl_GetCommandInfo` -> objProc == `tclForeignCmd`) to marshal it back OUT as a function
+value, so a Tcl callback reaches `psSubscribe`/`timerAfter`/`calogExport`. Bare-name exports work via
+Tcl's own `unknown` handler (also normally from init.tcl): the adapter defines it to resolve an
+undefined command against the export registry and invoke it -- and because Tcl has no receiver-method
+syntax, `unknown` firing always means a genuinely-missing command, so no guard is needed (unlike Ruby's
+`method_missing`). puts/print write to stdout directly (Tcl's channel `puts` needs the IO subsystem
+calog does not init); there is no file/socket IO -- scripts use calog's `fs*`/`net*` natives.
+
+**Verified**: `testEngineTcl` (13 checks -- natives, dict egress/ingress with a nested list, a foreign
+command callable, a cross-thread Tcl callback via `calogCallback`, the error handler, three concurrent
+interpreters), ASan-clean; `tsantcl` clean; bare-name exports and cross-engine both ways; `make test`
+30/30.

examples/scripts/README.md

@@ -34,6 +34,7 @@ Conventions every example follows:
 | `mybasic.bas` | my-basic: variables, a `FOR..NEXT` sum, `IF..THEN..ELSE`, plus crypto + kv |
 | `berry.be` | Berry (Python-like): a `def`, a list built with a `for`, a map, then json + uuid |
 | `ruby.rb` | Ruby (mruby): a Range, `reduce` with a block, `select(&:even?)`, a Hash, then json + sha256 |
+| `tcl.tcl` | Tcl 9: `set`/`expr`, a `foreach`, a list and a `dict`, then json + sha256 |
 | `scheme.scm` | s7 Scheme: a recursive factorial, list build + map, string ops (all in one `(begin ...)`) |
 | `wren.wren` | Wren: a class, a `List`, and every native reached via `Calog.call(name, [args])` |
 

examples/scripts/languages/tcl.tcl

@@ -0,0 +1,20 @@
+# A guided tour of Tcl (9.0) running on calog.
+# Demonstrates: set/expr, a foreach loop, a list and a dict, then the jsonStringify/jsonParse and
+# cryptoHashSha256 natives. puts works; real file/socket IO is provided by calog's fs*/net* natives
+# (not Tcl channels), so scripts stay uniform. Tcl values are strings, so a numeric literal handed
+# to a native is coerced to an int.
+# run: bin/calog examples/scripts/languages/tcl.tcl
+
+set nums {1 2 3 4 5}
+set total 0
+foreach n $nums { set total [expr {$total + $n}] }
+puts "nums = $nums, total = $total"
+
+set user [dict create name ada age 36]
+puts "user as JSON: [jsonStringify $user]"
+
+set parsed [jsonParse {{"lang":"tcl","ints":[10,20,30]}}]
+puts "parsed lang = [dict get $parsed lang], second int = [lindex [dict get $parsed ints] 1]"
+puts "sha256(calog) = [cryptoHashSha256 calog]"
+
+calogExit 0

libs/calogExport.h

@@ -13,9 +13,10 @@
 // the same way via Kernel#method_missing, but only at TOP LEVEL (self is the main object, so a
 // missing method on some other receiver -- obj.foo -- is never hijacked). my-basic likewise
 // bare-resolves a name called like a function, but CASE-INSENSITIVELY (it uppercases identifiers
-// at parse time), so `luaExample(1, 2)` there matches the export ignoring case. Wren and Berry
-// resolve names statically and use calogCall('luaExample', ...). Resolution is dynamic: a name
-// exported at any time becomes callable immediately, and calogUnexport takes effect at once.
+// at parse time), so `luaExample(1, 2)` there matches the export ignoring case. Tcl resolves a bare
+// command the same way via its `unknown` handler (`luaExample 1 2`). Wren and Berry resolve names
+// statically and use calogCall('luaExample', ...). Resolution is dynamic: a name exported at any
+// time becomes callable immediately, and calogUnexport takes effect at once.
 //
 // An exported function is an ordinary calog function value, so a call runs in the exporter's
 // own context/thread (marshalled like any callable), and a call after the exporter is gone

libs/calogTask.c

@@ -72,6 +72,9 @@ static const TaskEngineT gTaskEngines[] = {
 #endif
 #ifdef CALOG_WITH_MRUBY
     { "mruby", &calogMrubyEngine },
+#endif
+#ifdef CALOG_WITH_TCL
+    { "tcl", &calogTclEngine },
 #endif
     { NULL, NULL }
 };

src/calog.h

@@ -204,6 +204,7 @@ extern const CalogEngineT calogBerryEngine;
 extern const CalogEngineT calogS7Engine;
 extern const CalogEngineT calogWrenEngine;
 extern const CalogEngineT calogMrubyEngine;
+extern const CalogEngineT calogTclEngine;
 
 // Register the built-in engines selected at build time, so calogContextLoad works
 // without hand-registering each. Define CALOG_WITH_LUA / _JS / _SQUIRREL / _MYBASIC (in
@@ -235,6 +236,9 @@ static inline void calogRegisterBuiltinEngines(CalogT *calog) {
 #endif
 #ifdef CALOG_WITH_MRUBY
     calogRegisterEngine(calog, &calogMrubyEngine);
+#endif
+#ifdef CALOG_WITH_TCL
+    calogRegisterEngine(calog, &calogTclEngine);
 #endif
     (void)calog;   // no-op if the build selected no engines
 }

src/calogMain.c

@@ -94,7 +94,8 @@ static const CalogEngineT *const gEngines[] = {
     &calogBerryEngine,
     &calogS7Engine,
     &calogWrenEngine,
-    &calogMrubyEngine
+    &calogMrubyEngine,
+    &calogTclEngine
 };
 
 // The built-in libraries, in registration order. One source of truth: main() registers every

src/tcl/tclAdapter.c

@@ -0,0 +1,718 @@
+// tclAdapter.c -- Tcl (Tool Command Language) engine adapter for the broker.
+//
+// Each exposed native is a Tcl command bound to one shared trampoline (tclTrampoline): the command
+// name is objv[0], the owning context rides on per-interp assoc data (tclOf), and the arguments
+// dispatch through calogCall. Marshalling covers scalars and BINARY-SAFE strings (via byte-array
+// objects); aggregates cross both ways (Tcl list<->list, Tcl dict<->map). Because Tcl is
+// "everything is a string", egress (tclToValue) recovers the canonical type from the Tcl_Obj
+// internal representation (typePtr, cached at first use), coercing an untyped pure-numeric string
+// to int/real and otherwise keeping it a string; nil has no Tcl analogue and round-trips to the
+// empty string, bool to 0/1 (documented EIAS losses).
+//
+// Callbacks both ways ride on commands. A foreign CalogFnT (in tclFromValue, or a Tcl command
+// prefix wrapped by the `calogCallback` command) becomes a "calogFn<N>" command whose objProc is
+// tclForeignCmd and whose clientData is the CalogFnT (released by its delete proc). The command
+// NAME is the value the script holds -- call it `$fn a b` -- and tclToValue recognizes such a name
+// (Tcl_GetCommandInfo -> objProc == tclForeignCmd) to marshal it back OUT as a function value, so a
+// Tcl callback reaches natives like psSubscribe/timerAfter/calogExport. There is no file/socket IO;
+// scripts use calog's fs*/net* natives, and the adapter provides puts/print.
+//
+// Error model: a failed native/marshal sets the interp result and returns TCL_ERROR (Tcl unwinds).
+// Concurrency: Tcl's apartment model gives one Tcl_Interp per thread with no global lock; the one
+// process-global init (Tcl_FindExecutable + caching the type pointers) is done once via pthread_once,
+// and each context thread runs Tcl_FinalizeThread at teardown.
+
+#define _POSIX_C_SOURCE 200809L
+
+#include "tclAdapter.h"
+
+#include <tcl.h>
+
+#include <pthread.h>
+#include <stdint.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+struct CalogTclT {
+    Tcl_Interp *interp;
+    CalogT     *broker;
+    uint64_t    ctxId;
+    int32_t     nextFn;   // mints unique "calogFn<N>" command names for function values
+};
+
+// Backs a CalogFnT that invokes a Tcl command prefix (a script callback captured as a value).
+typedef struct TclScriptT {
+    CalogTclT *context;
+    Tcl_Obj   *prefix;
+} TclScriptT;
+
+// Internal-rep type pointers, cached once (they are process-global static ObjTypes in libtcl).
+// Tcl_GetObjType returns NULL for "int"/"bytearray" in 9.0, so we mint a sample of each instead.
+static pthread_once_t     gInitOnce      = PTHREAD_ONCE_INIT;
+static const Tcl_ObjType *gIntType       = NULL;
+static const Tcl_ObjType *gDoubleType    = NULL;
+static const Tcl_ObjType *gByteArrayType = NULL;
+static const Tcl_ObjType *gListType      = NULL;
+static const Tcl_ObjType *gDictType      = NULL;
+
+static int      tclCallbackCmd(void *cd, Tcl_Interp *ip, int objc, Tcl_Obj *const objv[]);
+static int      tclForeignCmd(void *cd, Tcl_Interp *ip, int objc, Tcl_Obj *const objv[]);
+static void     tclForeignDelete(void *cd);
+static int32_t  tclFromValue(CalogTclT *context, const CalogValueT *value, Tcl_Obj **out, int32_t depth);
+static void     tclInitOnce(void);
+static int32_t  tclMakeFnCommand(CalogTclT *context, CalogFnT *fn, Tcl_Obj **out);
+static int32_t  tclMarshalArgs(CalogTclT *context, int objc, Tcl_Obj *const objv[], int from, CalogValueT **out, int32_t *outCount);
+static CalogTclT *tclOf(Tcl_Interp *ip);
+static int      tclPrintCmd(void *cd, Tcl_Interp *ip, int objc, Tcl_Obj *const objv[]);
+static int      tclPutsCmd(void *cd, Tcl_Interp *ip, int objc, Tcl_Obj *const objv[]);
+static int32_t  tclScriptInvoke(CalogValueT *args, int32_t argCount, CalogValueT *result, void *userData);
+static void     tclScriptRelease(CalogFnT *callable);
+static int      tclSetResult(CalogTclT *context, Tcl_Interp *ip, int32_t status, CalogValueT *result);
+static int32_t  tclToValue(CalogTclT *context, Tcl_Obj *obj, CalogValueT *out, int32_t depth);
+static int      tclTrampoline(void *cd, Tcl_Interp *ip, int objc, Tcl_Obj *const objv[]);
+static int      tclUnknownCmd(void *cd, Tcl_Interp *ip, int objc, Tcl_Obj *const objv[]);
+static int32_t  tclWrapCommand(CalogTclT *context, Tcl_Obj *prefix, CalogFnT **out);
+
+
+int32_t calogTclCreate(CalogTclT **out, CalogT *broker, uint64_t ctxId) {
+    CalogTclT *context;
+
+    *out = NULL;
+    pthread_once(&gInitOnce, tclInitOnce);
+    context = (CalogTclT *)calloc(1, sizeof(*context));
+    if (context == NULL) {
+        return calogErrOomE;
+    }
+    context->interp = Tcl_CreateInterp();
+    if (context->interp == NULL) {
+        free(context);
+        return calogErrOomE;
+    }
+    context->broker = broker;
+    context->ctxId  = ctxId;
+    Tcl_SetAssocData(context->interp, "calogCtx", NULL, context);   // recovered by tclOf
+    // puts/print write to stdout directly: Tcl's channel-based puts needs the IO subsystem calog
+    // does not initialize. calogCallback wraps a command prefix into a callable function value.
+    Tcl_CreateObjCommand(context->interp, "puts", tclPutsCmd, NULL, NULL);
+    Tcl_CreateObjCommand(context->interp, "print", tclPrintCmd, NULL, NULL);
+    Tcl_CreateObjCommand(context->interp, "calogCallback", tclCallbackCmd, NULL, NULL);
+    // Bare-name export resolution: an undefined command resolves to a broker export (like the hook
+    // engines). Tcl's `unknown` command-not-found handler normally lives in the skipped init.tcl.
+    Tcl_CreateObjCommand(context->interp, "unknown", tclUnknownCmd, NULL, NULL);
+    *out = context;
+    return calogOkE;
+}
+
+
+// calogCallback command ?arg ...? -- wrap a Tcl command prefix as a calog function value (its name).
+static int tclCallbackCmd(void *cd, Tcl_Interp *ip, int objc, Tcl_Obj *const objv[]) {
+    CalogTclT *context;
+    Tcl_Obj   *prefix;
+    Tcl_Obj   *nameObj;
+    CalogFnT  *fn;
+
+    (void)cd;
+    context = tclOf(ip);
+    if (objc < 2) {
+        Tcl_WrongNumArgs(ip, 1, objv, "command ?arg ...?");
+        return TCL_ERROR;
+    }
+    prefix = Tcl_NewListObj(objc - 1, objv + 1);
+    if (tclWrapCommand(context, prefix, &fn) != calogOkE) {
+        Tcl_BounceRefCount(prefix);
+        Tcl_SetObjResult(ip, Tcl_NewStringObj("calogCallback: out of memory", -1));
+        return TCL_ERROR;
+    }
+    if (tclMakeFnCommand(context, fn, &nameObj) != calogOkE) {
+        calogFnRelease(fn);
+        Tcl_SetObjResult(ip, Tcl_NewStringObj("calogCallback: out of memory", -1));
+        return TCL_ERROR;
+    }
+    calogFnRelease(fn);   // tclMakeFnCommand retained its own reference for the command
+    Tcl_SetObjResult(ip, nameObj);
+    return TCL_OK;
+}
+
+
+void calogTclDestroy(CalogTclT *context) {
+    if (context == NULL) {
+        return;
+    }
+    if (context->interp != NULL) {
+        Tcl_DeleteInterp(context->interp);   // fires every function-value command's delete proc
+    }
+    // Each calog context owns its thread, so this is thread teardown: release Tcl's per-thread
+    // notifier / thread storage.
+    Tcl_FinalizeThread();
+    free(context);
+}
+
+
+int32_t calogTclExport(CalogTclT *context, const char *name, CalogFnT **out) {
+    Tcl_CmdInfo info;
+    Tcl_Obj    *nameObj;
+    Tcl_Obj    *prefix;
+
+    *out = NULL;
+    if (!Tcl_GetCommandInfo(context->interp, name, &info)) {
+        return calogErrNotFoundE;
+    }
+    nameObj = Tcl_NewStringObj(name, -1);
+    prefix  = Tcl_NewListObj(1, &nameObj);
+    return tclWrapCommand(context, prefix, out);
+}
+
+
+int32_t calogTclExpose(CalogTclT *context, const char *name) {
+    if (calogLookup(context->broker, name) == NULL) {
+        return calogErrNotFoundE;
+    }
+    Tcl_CreateObjCommand(context->interp, name, tclTrampoline, NULL, NULL);
+    return calogOkE;
+}
+
+
+// Call target for a function value (a foreign CalogFnT, or a Tcl callback wrapped by calogCallback).
+static int tclForeignCmd(void *cd, Tcl_Interp *ip, int objc, Tcl_Obj *const objv[]) {
+    CalogTclT   *context;
+    CalogValueT *args;
+    CalogValueT  result;
+    int32_t      argc;
+    int32_t      index;
+    int32_t      status;
+
+    context = tclOf(ip);
+    args    = NULL;
+    argc    = 0;
+    if (tclMarshalArgs(context, objc, objv, 1, &args, &argc) != calogOkE) {
+        Tcl_SetObjResult(ip, Tcl_NewStringObj("failed to marshal a function-value argument", -1));
+        return TCL_ERROR;
+    }
+    status = calogFnInvoke((CalogFnT *)cd, args, argc, &result);
+    for (index = 0; index < argc; index++) {
+        calogValueFree(&args[index]);
+    }
+    free(args);
+    return tclSetResult(context, ip, status, &result);
+}
+
+
+static void tclForeignDelete(void *cd) {
+    calogFnRelease((CalogFnT *)cd);
+}
+
+
+static int32_t tclFromValue(CalogTclT *context, const CalogValueT *value, Tcl_Obj **out, int32_t depth) {
+    *out = NULL;
+    if (depth >= CALOG_MAX_DEPTH) {
+        *out = Tcl_NewObj();
+        return calogErrDepthE;
+    }
+    switch (value->type) {
+        case calogNilE:
+            *out = Tcl_NewObj();   // Tcl has no nil; empty string
+            return calogOkE;
+        case calogBoolE:
+            *out = Tcl_NewWideIntObj(value->as.b ? 1 : 0);
+            return calogOkE;
+        case calogIntE:
+            *out = Tcl_NewWideIntObj((Tcl_WideInt)value->as.i);
+            return calogOkE;
+        case calogRealE:
+            *out = Tcl_NewDoubleObj((double)value->as.r);
+            return calogOkE;
+        case calogStringE:
+            // byte array -> binary-safe (Tcl string reps are UTF-8, not NUL-safe)
+            *out = Tcl_NewByteArrayObj((const unsigned char *)value->as.s.bytes, (Tcl_Size)value->as.s.length);
+            return calogOkE;
+        case calogAggE: {
+            CalogAggT *aggregate;
+            int64_t    index;
+            int32_t    status;
+            Tcl_Obj   *child;
+            aggregate = value->as.agg;
+            if (calogAggIsKeyed(aggregate)) {
+                Tcl_Obj *dict;
+                dict = Tcl_NewDictObj();
+                for (index = 0; index < aggregate->arrayCount; index++) {
+                    status = tclFromValue(context, &aggregate->array[index], &child, depth + 1);
+                    if (status != calogOkE) {
+                        Tcl_BounceRefCount(dict);
+                        *out = Tcl_NewObj();
+                        return status;
+                    }
+                    Tcl_DictObjPut(NULL, dict, Tcl_NewWideIntObj((Tcl_WideInt)index), child);
+                }
+                for (index = 0; index < aggregate->pairCount; index++) {
+                    Tcl_Obj *key;
+                    status = tclFromValue(context, &aggregate->pairs[index].key, &key, depth + 1);
+                    if (status != calogOkE) {
+                        Tcl_BounceRefCount(dict);
+                        *out = Tcl_NewObj();
+                        return status;
+                    }
+                    status = tclFromValue(context, &aggregate->pairs[index].value, &child, depth + 1);
+                    if (status != calogOkE) {
+                        Tcl_BounceRefCount(key);
+                        Tcl_BounceRefCount(dict);
+                        *out = Tcl_NewObj();
+                        return status;
+                    }
+                    Tcl_DictObjPut(NULL, dict, key, child);
+                }
+                *out = dict;
+                return calogOkE;
+            }
+            Tcl_Obj *list;
+            list = Tcl_NewListObj(0, NULL);
+            for (index = 0; index < aggregate->arrayCount; index++) {
+                status = tclFromValue(context, &aggregate->array[index], &child, depth + 1);
+                if (status != calogOkE) {
+                    Tcl_BounceRefCount(list);
+                    *out = Tcl_NewObj();
+                    return status;
+                }
+                Tcl_ListObjAppendElement(NULL, list, child);
+            }
+            *out = list;
+            return calogOkE;
+        }
+        case calogFnE:
+            return tclMakeFnCommand(context, value->as.fn, out);
+    }
+    *out = Tcl_NewObj();
+    return calogErrTypeE;
+}
+
+
+static void tclInitOnce(void) {
+    Tcl_Obj *sample;
+
+    Tcl_FindExecutable(NULL);   // one-time subsystem (encoding/stub) init
+
+    sample = Tcl_NewWideIntObj(0);
+    Tcl_IncrRefCount(sample); gIntType = sample->typePtr; Tcl_DecrRefCount(sample);
+    sample = Tcl_NewDoubleObj(0.0);
+    Tcl_IncrRefCount(sample); gDoubleType = sample->typePtr; Tcl_DecrRefCount(sample);
+    sample = Tcl_NewByteArrayObj((const unsigned char *)"\0", 1);
+    Tcl_IncrRefCount(sample); gByteArrayType = sample->typePtr; Tcl_DecrRefCount(sample);
+    sample = Tcl_NewListObj(0, NULL);
+    Tcl_ListObjAppendElement(NULL, sample, Tcl_NewWideIntObj(0));
+    Tcl_IncrRefCount(sample); gListType = sample->typePtr; Tcl_DecrRefCount(sample);
+    sample = Tcl_NewDictObj();
+    Tcl_DictObjPut(NULL, sample, Tcl_NewStringObj("k", 1), Tcl_NewWideIntObj(0));
+    Tcl_IncrRefCount(sample); gDictType = sample->typePtr; Tcl_DecrRefCount(sample);
+}
+
+
+// Register a "calogFn<N>" command backed by `fn` (retained; released by tclForeignDelete). The
+// command NAME is returned as the script-visible function value.
+static int32_t tclMakeFnCommand(CalogTclT *context, CalogFnT *fn, Tcl_Obj **out) {
+    char name[32];
+
+    snprintf(name, sizeof(name), "calogFn%d", context->nextFn++);
+    calogFnRetain(fn);
+    Tcl_CreateObjCommand(context->interp, name, tclForeignCmd, fn, tclForeignDelete);
+    *out = Tcl_NewStringObj(name, -1);
+    return calogOkE;
+}
+
+
+static int32_t tclMarshalArgs(CalogTclT *context, int objc, Tcl_Obj *const objv[], int from, CalogValueT **out, int32_t *outCount) {
+    CalogValueT *args;
+    int32_t      argc;
+    int32_t      index;
+    int32_t      status;
+
+    *out      = NULL;
+    *outCount = 0;
+    argc      = (int32_t)objc - from;
+    if (argc <= 0) {
+        return calogOkE;
+    }
+    args = (CalogValueT *)calloc((size_t)argc, sizeof(CalogValueT));
+    if (args == NULL) {
+        return calogErrOomE;
+    }
+    for (index = 0; index < argc; index++) {
+        status = tclToValue(context, objv[from + index], &args[index], 0);
+        if (status != calogOkE) {
+            int32_t cleanup;
+            for (cleanup = 0; cleanup < index; cleanup++) {
+                calogValueFree(&args[cleanup]);
+            }
+            free(args);
+            return status;
+        }
+    }
+    *out      = args;
+    *outCount = argc;
+    return calogOkE;
+}
+
+
+static CalogTclT *tclOf(Tcl_Interp *ip) {
+    return (CalogTclT *)Tcl_GetAssocData(ip, "calogCtx", NULL);
+}
+
+
+static int tclPrintCmd(void *cd, Tcl_Interp *ip, int objc, Tcl_Obj *const objv[]) {
+    int index;
+
+    (void)cd;
+    (void)ip;
+    for (index = 1; index < objc; index++) {
+        Tcl_Size    len;
+        const char *bytes;
+        bytes = Tcl_GetStringFromObj(objv[index], &len);
+        fwrite(bytes, 1, (size_t)len, stdout);
+    }
+    return TCL_OK;
+}
+
+
+static int tclPutsCmd(void *cd, Tcl_Interp *ip, int objc, Tcl_Obj *const objv[]) {
+    int         nonewline;
+    int         first;
+    Tcl_Size    len;
+    const char *bytes;
+
+    (void)cd;
+    (void)ip;
+    nonewline = (objc >= 2 && strcmp(Tcl_GetString(objv[1]), "-nonewline") == 0);
+    first     = nonewline ? 2 : 1;
+    // The string is the last argument; a channel argument (e.g. stdout) before it is ignored.
+    if (objc > first) {
+        bytes = Tcl_GetStringFromObj(objv[objc - 1], &len);
+        fwrite(bytes, 1, (size_t)len, stdout);
+    }
+    if (!nonewline) {
+        fputc('\n', stdout);
+    }
+    return TCL_OK;
+}
+
+
+static int32_t tclScriptInvoke(CalogValueT *args, int32_t argCount, CalogValueT *result, void *userData) {
+    TclScriptT *holder;
+    CalogTclT  *context;
+    Tcl_Interp *ip;
+    Tcl_Size    prefixCount;
+    Tcl_Obj   **prefixElems;
+    Tcl_Obj   **objv;
+    int32_t     total;
+    int32_t     index;
+    int32_t     status;
+    int         code;
+
+    holder  = (TclScriptT *)userData;
+    context = holder->context;
+    ip      = context->interp;
+    calogValueNil(result);
+    if (Tcl_ListObjGetElements(ip, holder->prefix, &prefixCount, &prefixElems) != TCL_OK) {
+        return calogFail(result, calogErrArgE, "invalid tcl callback prefix");
+    }
+    total = (int32_t)prefixCount + argCount;
+    objv  = (Tcl_Obj **)calloc((size_t)(total > 0 ? total : 1), sizeof(Tcl_Obj *));
+    if (objv == NULL) {
+        return calogFail(result, calogErrOomE, "out of memory invoking tcl callback");
+    }
+    for (index = 0; index < (int32_t)prefixCount; index++) {
+        objv[index] = prefixElems[index];
+        Tcl_IncrRefCount(objv[index]);
+    }
+    for (index = 0; index < argCount; index++) {
+        Tcl_Obj *arg;
+        status = tclFromValue(context, &args[index], &arg, 0);
+        if (status != calogOkE) {
+            int32_t cleanup;
+            Tcl_BounceRefCount(arg);
+            for (cleanup = 0; cleanup < (int32_t)prefixCount + index; cleanup++) {
+                Tcl_DecrRefCount(objv[cleanup]);
+            }
+            free(objv);
+            return calogFail(result, status, "failed to marshal a tcl callback argument");
+        }
+        objv[(int32_t)prefixCount + index] = arg;
+        Tcl_IncrRefCount(arg);
+    }
+    code = Tcl_EvalObjv(ip, total, objv, 0);
+    for (index = 0; index < total; index++) {
+        Tcl_DecrRefCount(objv[index]);
+    }
+    free(objv);
+    if (code != TCL_OK) {
+        return calogFail(result, calogErrArgE, Tcl_GetString(Tcl_GetObjResult(ip)));
+    }
+    return tclToValue(context, Tcl_GetObjResult(ip), result, 0);
+}
+
+
+static void tclScriptRelease(CalogFnT *callable) {
+    TclScriptT *holder;
+
+    holder = (TclScriptT *)calogFnUserData(callable);
+    Tcl_DecrRefCount(holder->prefix);
+    free(holder);
+}
+
+
+static int tclSetResult(CalogTclT *context, Tcl_Interp *ip, int32_t status, CalogValueT *result) {
+    Tcl_Obj *obj;
+    int32_t  marshal;
+
+    if (status != calogOkE) {
+        Tcl_SetObjResult(ip, Tcl_NewStringObj((result->type == calogStringE) ? result->as.s.bytes : "native call failed", -1));
+        calogValueFree(result);
+        return TCL_ERROR;
+    }
+    marshal = tclFromValue(context, result, &obj, 0);
+    calogValueFree(result);
+    if (marshal != calogOkE) {
+        Tcl_SetObjResult(ip, Tcl_NewStringObj("failed to marshal the native result", -1));
+        return TCL_ERROR;
+    }
+    Tcl_SetObjResult(ip, obj);
+    return TCL_OK;
+}
+
+
+static int32_t tclToValue(CalogTclT *context, Tcl_Obj *obj, CalogValueT *out, int32_t depth) {
+    const Tcl_ObjType *type;
+
+    calogValueNil(out);
+    if (depth >= CALOG_MAX_DEPTH) {
+        return calogErrDepthE;
+    }
+    type = obj->typePtr;
+    if (type == gDictType) {
+        CalogAggT     *aggregate;
+        Tcl_DictSearch search;
+        Tcl_Obj       *key;
+        Tcl_Obj       *val;
+        int            done;
+        int32_t        status;
+        status = calogAggCreate(&aggregate, calogMapE);
+        if (status != calogOkE) {
+            return status;
+        }
+        if (Tcl_DictObjFirst(NULL, obj, &search, &key, &val, &done) != TCL_OK) {
+            calogAggFree(aggregate);
+            return calogErrArgE;
+        }
+        for (; !done; Tcl_DictObjNext(&search, &key, &val, &done)) {
+            CalogValueT ckey;
+            CalogValueT cval;
+            status = tclToValue(context, key, &ckey, depth + 1);
+            if (status != calogOkE) {
+                Tcl_DictObjDone(&search);
+                calogAggFree(aggregate);
+                return status;
+            }
+            status = tclToValue(context, val, &cval, depth + 1);
+            if (status != calogOkE) {
+                calogValueFree(&ckey);
+                Tcl_DictObjDone(&search);
+                calogAggFree(aggregate);
+                return status;
+            }
+            status = calogAggSet(aggregate, &ckey, &cval);
+            if (status != calogOkE) {
+                calogValueFree(&ckey);
+                calogValueFree(&cval);
+                Tcl_DictObjDone(&search);
+                calogAggFree(aggregate);
+                return status;
+            }
+        }
+        Tcl_DictObjDone(&search);
+        calogValueAgg(out, aggregate);
+        return calogOkE;
+    }
+    if (type == gListType) {
+        CalogAggT *aggregate;
+        Tcl_Size   count;
+        Tcl_Obj  **elems;
+        Tcl_Size   index;
+        int32_t    status;
+        if (Tcl_ListObjGetElements(NULL, obj, &count, &elems) != TCL_OK) {
+            return calogErrArgE;
+        }
+        status = calogAggCreate(&aggregate, calogListE);
+        if (status != calogOkE) {
+            return status;
+        }
+        for (index = 0; index < count; index++) {
+            CalogValueT element;
+            status = tclToValue(context, elems[index], &element, depth + 1);
+            if (status != calogOkE) {
+                calogAggFree(aggregate);
+                return status;
+            }
+            status = calogAggPush(aggregate, &element);
+            if (status != calogOkE) {
+                calogValueFree(&element);
+                calogAggFree(aggregate);
+                return status;
+            }
+        }
+        calogValueAgg(out, aggregate);
+        return calogOkE;
+    }
+    if (type == gIntType) {
+        Tcl_WideInt wide;
+        Tcl_GetWideIntFromObj(NULL, obj, &wide);
+        calogValueInt(out, (int64_t)wide);
+        return calogOkE;
+    }
+    if (type == gDoubleType) {
+        double real;
+        Tcl_GetDoubleFromObj(NULL, obj, &real);
+        calogValueReal(out, real);
+        return calogOkE;
+    }
+    if (type == gByteArrayType) {
+        Tcl_Size       length;
+        unsigned char *bytes;
+        bytes = Tcl_GetByteArrayFromObj(obj, &length);
+        return calogValueString(out, (const char *)bytes, (int64_t)length);
+    }
+    // String or no internal representation.
+    {
+        Tcl_Size    length;
+        const char *bytes;
+        Tcl_WideInt wide;
+        double      real;
+        bytes = Tcl_GetStringFromObj(obj, &length);
+        // A function-value command name marshals back OUT as a function value.
+        if (length >= 7 && memcmp(bytes, "calogFn", 7) == 0) {
+            Tcl_CmdInfo info;
+            if (Tcl_GetCommandInfo(context->interp, bytes, &info) && info.objProc == tclForeignCmd) {
+                calogFnRetain((CalogFnT *)info.objClientData);
+                calogValueFn(out, (CalogFnT *)info.objClientData);
+                return calogOkE;
+            }
+        }
+        // Tcl's own coercion: a pure integer/real string is a number.
+        if (Tcl_GetWideIntFromObj(NULL, obj, &wide) == TCL_OK) {
+            calogValueInt(out, (int64_t)wide);
+            return calogOkE;
+        }
+        if (Tcl_GetDoubleFromObj(NULL, obj, &real) == TCL_OK) {
+            calogValueReal(out, real);
+            return calogOkE;
+        }
+        return calogValueString(out, bytes, (int64_t)length);
+    }
+}
+
+
+static int tclTrampoline(void *cd, Tcl_Interp *ip, int objc, Tcl_Obj *const objv[]) {
+    CalogTclT   *context;
+    CalogValueT *args;
+    CalogValueT  result;
+    int32_t      argc;
+    int32_t      index;
+    int32_t      status;
+
+    (void)cd;
+    context = tclOf(ip);
+    args    = NULL;
+    argc    = 0;
+    if (tclMarshalArgs(context, objc, objv, 1, &args, &argc) != calogOkE) {
+        Tcl_SetObjResult(ip, Tcl_NewStringObj("failed to marshal a native argument", -1));
+        return TCL_ERROR;
+    }
+    status = calogCall(context->broker, Tcl_GetString(objv[0]), args, argc, &result);
+    for (index = 0; index < argc; index++) {
+        calogValueFree(&args[index]);
+    }
+    free(args);
+    return tclSetResult(context, ip, status, &result);
+}
+
+
+// The `unknown` handler: a command Tcl could not resolve -- objv[1] is its name, objv[2..] its
+// arguments -- is looked up as a broker export and invoked; a miss becomes the standard error.
+// Tcl is case-sensitive, so the match is exact (unlike my-basic). No receiver-method syntax exists
+// in Tcl, so no top-level guard is needed (unlike Ruby's method_missing).
+static int tclUnknownCmd(void *cd, Tcl_Interp *ip, int objc, Tcl_Obj *const objv[]) {
+    CalogTclT   *context;
+    const char  *name;
+    CalogValueT  nameArg;
+    CalogValueT  resolved;
+    CalogValueT *args;
+    CalogValueT  result;
+    int32_t      argc;
+    int32_t      index;
+    int32_t      status;
+
+    (void)cd;
+    context = tclOf(ip);
+    if (objc < 2) {
+        Tcl_SetObjResult(ip, Tcl_NewStringObj("unknown: missing command name", -1));
+        return TCL_ERROR;
+    }
+    name = Tcl_GetString(objv[1]);
+    calogValueNil(&resolved);
+    if (calogValueString(&nameArg, name, (int64_t)strlen(name)) == calogOkE) {
+        calogCall(context->broker, "__calogExportResolve", &nameArg, 1, &resolved);
+        calogValueFree(&nameArg);
+    }
+    if (resolved.type != calogFnE) {
+        calogValueFree(&resolved);
+        Tcl_SetObjResult(ip, Tcl_ObjPrintf("invalid command name \"%s\"", name));
+        return TCL_ERROR;
+    }
+    // It is an export: invoke with the remaining words. Keep the resolved reference across the
+    // invoke (guards a concurrent unexport), then release it before returning.
+    args = NULL;
+    argc = 0;
+    if (tclMarshalArgs(context, objc, objv, 2, &args, &argc) != calogOkE) {
+        calogValueFree(&resolved);
+        Tcl_SetObjResult(ip, Tcl_NewStringObj("failed to marshal a native argument", -1));
+        return TCL_ERROR;
+    }
+    status = calogFnInvoke(resolved.as.fn, args, argc, &result);
+    for (index = 0; index < argc; index++) {
+        calogValueFree(&args[index]);
+    }
+    free(args);
+    calogValueFree(&resolved);
+    return tclSetResult(context, ip, status, &result);
+}
+
+
+static int32_t tclWrapCommand(CalogTclT *context, Tcl_Obj *prefix, CalogFnT **out) {
+    TclScriptT *holder;
+    int32_t     status;
+
+    *out   = NULL;
+    holder = (TclScriptT *)malloc(sizeof(*holder));
+    if (holder == NULL) {
+        return calogErrOomE;
+    }
+    holder->context = context;
+    holder->prefix  = prefix;
+    Tcl_IncrRefCount(prefix);
+    status = calogFnCreate(out, context->broker, tclScriptInvoke, holder, tclScriptRelease, context->ctxId);
+    if (status != calogOkE) {
+        Tcl_DecrRefCount(prefix);
+        free(holder);
+        return status;
+    }
+    return calogOkE;
+}
+
+
+int32_t calogTclRun(CalogTclT *context, const char *source) {
+    int code;
+
+    code = Tcl_EvalEx(context->interp, source, -1, TCL_EVAL_GLOBAL);
+    if (code != TCL_OK) {
+        fprintf(stderr, "tcl error: %s\n", Tcl_GetString(Tcl_GetObjResult(context->interp)));
+        return calogErrArgE;
+    }
+    return calogOkE;
+}

src/tcl/tclAdapter.h

@@ -0,0 +1,31 @@
+// tclAdapter.h -- Tcl (Tool Command Language) engine adapter for the broker.
+//
+// Exposes broker-registered natives into a Tcl interpreter as commands routed through one
+// trampoline (the command name is objv[0], the context is per-interp assoc data). Marshals values
+// between Tcl_Obj and CalogValueT: int64 (Tcl_WideInt), double, list<->list, dict<->map, and
+// BINARY-SAFE strings via byte-array objects. Tcl is "everything is a string", so egress recovers
+// the canonical type from the Tcl_Obj internal representation (typePtr), coercing an untyped
+// numeric string to int/real and otherwise treating it as a string; nil has no Tcl equivalent and
+// round-trips to the empty string, and bool round-trips to 0/1 (documented EIAS losses).
+//
+// Callbacks both ways ride on commands: a foreign CalogFnT pushed IN becomes a command (carrying
+// the CalogFnT as clientData, released by its delete proc) whose NAME is the value handed to the
+// script (call it as `$fn a b`); a Tcl command prefix wrapped with `calogCallback` becomes a
+// CalogFnT the same way, so it marshals back OUT as a function value (tclToValue recognizes such a
+// command by its trampoline). Tcl file/socket IO is intentionally absent -- scripts use calog's
+// fs*/net* natives; the adapter provides puts/print.
+
+#ifndef TCL_ADAPTER_H
+#define TCL_ADAPTER_H
+
+#include "calogInternal.h"
+
+typedef struct CalogTclT CalogTclT;
+
+int32_t calogTclCreate(CalogTclT **out, CalogT *broker, uint64_t ctxId);
+void    calogTclDestroy(CalogTclT *context);
+int32_t calogTclExport(CalogTclT *context, const char *name, CalogFnT **out);
+int32_t calogTclExpose(CalogTclT *context, const char *name);
+int32_t calogTclRun(CalogTclT *context, const char *source);
+
+#endif

src/tcl/tclEngine.c

@@ -0,0 +1,62 @@
+// tclEngine.c -- bridges the Tcl adapter to the actor layer's CalogEngineT vtable.
+//
+// Every hook runs on the owning context's thread (createInterpreter, runSource,
+// destroyInterpreter), confining the Tcl interpreter to one thread -- which is exactly Tcl's
+// apartment threading model (one Tcl_Interp per thread, no global lock). createInterpreter builds
+// the interp and exposes the registered natives; runSource evaluates a script and reports failure
+// through the single error channel (result).
+
+#include "calogInternal.h"
+#include "tclAdapter.h"
+
+static int32_t tclEngineCreate(CalogContextT *context, void **interpOut);
+static void    tclEngineDestroy(void *interp);
+static int32_t tclEngineRun(void *interp, const char *source, CalogValueT *result);
+static void    tclExposeVisitor(const CalogEntryT *entry, void *ud);
+
+static const char *const tclExtensions[] = { "tcl", NULL };
+
+const CalogEngineT calogTclEngine = {
+    "tcl",
+    tclExtensions,
+    tclEngineCreate,
+    tclEngineDestroy,
+    tclEngineRun
+};
+
+
+static int32_t tclEngineCreate(CalogContextT *context, void **interpOut) {
+    CalogTclT *tcl;
+    int32_t    status;
+
+    *interpOut = NULL;
+    status = calogTclCreate(&tcl, calogContextBroker(context), calogContextId(context));
+    if (status != calogOkE) {
+        return status;
+    }
+    calogForEach(calogContextBroker(context), tclExposeVisitor, tcl);
+    *interpOut = tcl;
+    return calogOkE;
+}
+
+
+static void tclEngineDestroy(void *interp) {
+    calogTclDestroy((CalogTclT *)interp);
+}
+
+
+static int32_t tclEngineRun(void *interp, const char *source, CalogValueT *result) {
+    int32_t status;
+
+    calogValueNil(result);
+    status = calogTclRun((CalogTclT *)interp, source);
+    if (status != calogOkE) {
+        return calogFail(result, status, "tcl script failed");
+    }
+    return calogOkE;
+}
+
+
+static void tclExposeVisitor(const CalogEntryT *entry, void *ud) {
+    calogTclExpose((CalogTclT *)ud, entry->name);
+}

tests/testEngineTcl.c

@@ -0,0 +1,402 @@
+// testEngineTcl.c -- Tcl on a context thread, driven the host way: register natives, open a
+// context, fire-and-forget a script, and calogPump on the host thread. Verifies host-thread
+// dispatch, the inline escape hatch, the cross-thread callback, aggregates both ways (list/dict),
+// a foreign function value, the error handler, and concurrent contexts (Tcl apartment threading).
+
+#define _POSIX_C_SOURCE 200809L
+
+#include "calog.h"
+
+#include <stdatomic.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <time.h>
+
+#define CHECK(cond, msg) checkImpl((cond), (msg), __FILE__, __LINE__)
+
+#define PUMP_LIMIT 4000
+
+static CalogT          *calog        = NULL;
+static _Atomic int64_t  reportedValue = 0;
+static _Atomic uint64_t reportedCtxId = 0xFFFFu;
+static _Atomic uint64_t inlineCtxId   = 0xFFFFu;
+static _Atomic int32_t  bumpCount     = 0;
+static _Atomic bool     scriptDone    = false;
+static _Atomic int32_t  errorCount    = 0;
+static _Atomic uint64_t errorCtxId    = 0;
+static CalogFnT *_Atomic storedCb      = NULL;
+static char              storedName[32] = { 0 };
+static _Atomic int32_t   nameLen        = -1;
+static int32_t          testsRun      = 0;
+static int32_t          testsFailed   = 0;
+
+static void    checkImpl(bool condition, const char *message, const char *file, int32_t line);
+static int32_t nativeAdd(CalogValueT *args, int32_t argCount, CalogValueT *result, void *userData);
+static int32_t nativeBump(CalogValueT *args, int32_t argCount, CalogValueT *result, void *userData);
+static int32_t nativeDone(CalogValueT *args, int32_t argCount, CalogValueT *result, void *userData);
+static int32_t nativeGetAdder(CalogValueT *args, int32_t argCount, CalogValueT *result, void *userData);
+static int32_t nativeMakeUser(CalogValueT *args, int32_t argCount, CalogValueT *result, void *userData);
+static int32_t nativeMapAge(CalogValueT *args, int32_t argCount, CalogValueT *result, void *userData);
+static int32_t nativeReport(CalogValueT *args, int32_t argCount, CalogValueT *result, void *userData);
+static int32_t nativeReportInline(CalogValueT *args, int32_t argCount, CalogValueT *result, void *userData);
+static int32_t nativeReportName(CalogValueT *args, int32_t argCount, CalogValueT *result, void *userData);
+static int32_t nativeSetCb(CalogValueT *args, int32_t argCount, CalogValueT *result, void *userData);
+static void    onError(uint64_t contextId, const char *message, void *userData);
+static void    pumpUntilDone(void);
+static void    testConcurrentContexts(void);
+static void    testCrossThreadCallback(void);
+static void    testForeignFunction(void);
+static void    testHostAndInlineNatives(void);
+static void    testMapIngress(void);
+static void    testMaterializedRecord(void);
+static void    testScriptError(void);
+
+
+static void checkImpl(bool condition, const char *message, const char *file, int32_t line) {
+    testsRun++;
+    if (!condition) {
+        testsFailed++;
+        printf("FAIL %s:%d  %s\n", file, line, message);
+    }
+}
+
+
+static int32_t nativeAdd(CalogValueT *args, int32_t argCount, CalogValueT *result, void *userData) {
+    (void)userData;
+    calogValueNil(result);
+    if (argCount != 2 || args[0].type != calogIntE || args[1].type != calogIntE) {
+        return calogFail(result, calogErrArgE, "add expects two integers");
+    }
+    calogValueInt(result, args[0].as.i + args[1].as.i);
+    return calogOkE;
+}
+
+
+static int32_t nativeBump(CalogValueT *args, int32_t argCount, CalogValueT *result, void *userData) {
+    (void)args;
+    (void)argCount;
+    (void)userData;
+    atomic_fetch_add(&bumpCount, 1);
+    calogValueNil(result);
+    return calogOkE;
+}
+
+
+static int32_t nativeDone(CalogValueT *args, int32_t argCount, CalogValueT *result, void *userData) {
+    (void)args;
+    (void)argCount;
+    (void)userData;
+    atomic_store(&scriptDone, true);
+    calogValueNil(result);
+    return calogOkE;
+}
+
+
+static int32_t nativeGetAdder(CalogValueT *args, int32_t argCount, CalogValueT *result, void *userData) {
+    CalogFnT *callable;
+    int32_t   status;
+
+    (void)args;
+    (void)argCount;
+    (void)userData;
+    calogValueNil(result);
+    status = calogFnFromNative(&callable, calog, nativeAdd, NULL);
+    if (status != calogOkE) {
+        return calogFail(result, status, "getAdder could not allocate");
+    }
+    calogValueFn(result, callable);
+    return calogOkE;
+}
+
+
+static int32_t nativeMakeUser(CalogValueT *args, int32_t argCount, CalogValueT *result, void *userData) {
+    CalogAggT  *user;
+    CalogValueT key;
+    CalogValueT val;
+    int32_t     status;
+
+    (void)args;
+    (void)argCount;
+    (void)userData;
+    calogValueNil(result);
+    status = calogAggCreate(&user, calogMapE);
+    if (status != calogOkE) {
+        return calogFail(result, status, "makeUser could not allocate");
+    }
+    calogValueString(&key, "name", 4);
+    calogValueString(&val, "ada", 3);
+    calogAggSet(user, &key, &val);
+    calogValueString(&key, "age", 3);
+    calogValueInt(&val, 36);
+    calogAggSet(user, &key, &val);
+    calogValueAgg(result, user);
+    return calogOkE;
+}
+
+
+static int32_t nativeMapAge(CalogValueT *args, int32_t argCount, CalogValueT *result, void *userData) {
+    CalogValueT  key;
+    CalogValueT *found;
+
+    (void)userData;
+    calogValueNil(result);
+    if (argCount != 1 || args[0].type != calogAggE) {
+        return calogFail(result, calogErrArgE, "mapAge expects a map");
+    }
+    calogValueString(&key, "age", 3);
+    found = calogAggGet(args[0].as.agg, &key);
+    calogValueFree(&key);
+    if (found != NULL && found->type == calogIntE) {
+        atomic_store(&reportedValue, found->as.i);
+    }
+    return calogOkE;
+}
+
+
+static int32_t nativeReport(CalogValueT *args, int32_t argCount, CalogValueT *result, void *userData) {
+    (void)userData;
+    calogValueNil(result);
+    if (argCount != 1 || args[0].type != calogIntE) {
+        return calogFail(result, calogErrArgE, "report expects one integer");
+    }
+    atomic_store(&reportedCtxId, calogCurrentId());
+    atomic_store(&reportedValue, args[0].as.i);
+    return calogOkE;
+}
+
+
+static int32_t nativeReportInline(CalogValueT *args, int32_t argCount, CalogValueT *result, void *userData) {
+    (void)args;
+    (void)argCount;
+    (void)userData;
+    atomic_store(&inlineCtxId, calogCurrentId());
+    calogValueNil(result);
+    return calogOkE;
+}
+
+
+static int32_t nativeReportName(CalogValueT *args, int32_t argCount, CalogValueT *result, void *userData) {
+    size_t length;
+
+    (void)userData;
+    calogValueNil(result);
+    if (argCount != 1 || args[0].type != calogStringE) {
+        return calogFail(result, calogErrArgE, "reportName expects one string");
+    }
+    length = (size_t)args[0].as.s.length;
+    if (length >= sizeof(storedName)) {
+        length = sizeof(storedName) - 1;
+    }
+    memcpy(storedName, args[0].as.s.bytes, length);
+    storedName[length] = '\0';
+    atomic_store(&nameLen, (int32_t)length);
+    return calogOkE;
+}
+
+
+static int32_t nativeSetCb(CalogValueT *args, int32_t argCount, CalogValueT *result, void *userData) {
+    (void)userData;
+    calogValueNil(result);
+    if (argCount != 1 || args[0].type != calogFnE) {
+        return calogFail(result, calogErrArgE, "setCb expects one function");
+    }
+    calogFnRetain(args[0].as.fn);
+    atomic_store(&storedCb, args[0].as.fn);
+    return calogOkE;
+}
+
+
+static void onError(uint64_t contextId, const char *message, void *userData) {
+    (void)message;
+    (void)userData;
+    atomic_store(&errorCtxId, contextId);
+    atomic_fetch_add(&errorCount, 1);
+}
+
+
+static void pumpUntilDone(void) {
+    struct timespec ts = { 0, 500000 };
+    int             errorsBefore;
+    int             i;
+
+    errorsBefore = atomic_load(&errorCount);
+    for (i = 0; i < PUMP_LIMIT; i++) {
+        calogPump(calog);
+        if (atomic_load(&scriptDone) || atomic_load(&errorCount) != errorsBefore) {
+            calogPump(calog);
+            return;
+        }
+        nanosleep(&ts, NULL);
+    }
+}
+
+
+static void testHostAndInlineNatives(void) {
+    CalogContextT *ctx;
+
+    ctx = calogContextOpen(calog, &calogTclEngine);
+    CHECK(ctx != NULL, "opened a Tcl context");
+
+    atomic_store(&scriptDone, false);
+    calogContextEval(ctx, "report 42\nreportInline 1\ndone");
+    pumpUntilDone();
+
+    CHECK(atomic_load(&reportedValue) == 42, "host native received the argument");
+    CHECK(atomic_load(&reportedCtxId) == 0, "default native ran on the host thread (id 0)");
+    CHECK(atomic_load(&inlineCtxId) == calogContextId(ctx), "inline native ran on the script's own thread");
+
+    calogContextClose(ctx);
+}
+
+
+static void testMaterializedRecord(void) {
+    CalogContextT *ctx;
+
+    ctx = calogContextOpen(calog, &calogTclEngine);
+    atomic_store(&scriptDone, false);
+    atomic_store(&nameLen, -1);
+    atomic_store(&reportedValue, 0);
+    calogContextEval(ctx, "set u [makeUser]\nreport [dict get $u age]\nreportName [dict get $u name]\ndone");
+    pumpUntilDone();
+
+    CHECK(atomic_load(&reportedValue) == 36, "read an int field from a materialized record dict");
+    CHECK(atomic_load(&nameLen) == 3 && memcmp(storedName, "ada", 3) == 0, "read a string field from a materialized record dict");
+
+    calogContextClose(ctx);
+}
+
+
+static void testMapIngress(void) {
+    CalogContextT *ctx;
+
+    ctx = calogContextOpen(calog, &calogTclEngine);
+    atomic_store(&scriptDone, false);
+    atomic_store(&reportedValue, 0);
+    // The script builds a dict (with a nested list, exercising list ingress too) and hands it
+    // to a native, which reads a field.
+    calogContextEval(ctx, "set m [dict create age 9 tags [list 1 2]]\nmapAge $m\ndone");
+    pumpUntilDone();
+
+    CHECK(atomic_load(&reportedValue) == 9, "native read a field from a dict the script built");
+
+    calogContextClose(ctx);
+}
+
+
+static void testForeignFunction(void) {
+    CalogContextT *ctx;
+
+    ctx = calogContextOpen(calog, &calogTclEngine);
+    atomic_store(&scriptDone, false);
+    atomic_store(&reportedValue, 0);
+    // getAdder returns a function value (a command name); the script calls it as `$adder 2 3`.
+    calogContextEval(ctx, "set adder [getAdder]\nreport [$adder 2 3]\ndone");
+    pumpUntilDone();
+
+    CHECK(atomic_load(&reportedValue) == 5, "script called a foreign function value pushed in from the host");
+
+    calogContextClose(ctx);
+}
+
+
+static void testCrossThreadCallback(void) {
+    CalogContextT *ctx;
+    CalogFnT      *callback;
+    CalogValueT    arg;
+    CalogValueT    result;
+    int32_t        status;
+
+    ctx = calogContextOpen(calog, &calogTclEngine);
+    atomic_store(&scriptDone, false);
+    atomic_store(&storedCb, NULL);
+    // A Tcl proc wrapped by calogCallback becomes a function value that marshals to a CalogFnT.
+    calogContextEval(ctx, "proc cb {x} { expr {$x + 100} }\nsetCb [calogCallback cb]\ndone");
+    pumpUntilDone();
+
+    callback = atomic_load(&storedCb);
+    CHECK(callback != NULL, "a Tcl callback was captured as a CalogFnT");
+
+    calogValueInt(&arg, 7);
+    status = calogFnInvoke(callback, &arg, 1, &result);
+    CHECK(status == calogOkE && result.type == calogIntE && result.as.i == 107, "cross-thread callable invoke routed to the owner");
+    calogValueFree(&result);
+    calogValueFree(&arg);
+    calogFnRelease(callback);
+
+    calogContextClose(ctx);
+}
+
+
+static void testScriptError(void) {
+    CalogContextT *ctx;
+    int32_t        before;
+
+    ctx    = calogContextOpen(calog, &calogTclEngine);
+    before = atomic_load(&errorCount);
+    atomic_store(&scriptDone, false);
+    calogContextEval(ctx, "error {intentional test error}");
+    pumpUntilDone();
+
+    CHECK(atomic_load(&errorCount) == before + 1, "a fire-and-forget script error reached the error handler");
+    CHECK(atomic_load(&errorCtxId) == calogContextId(ctx), "the error names the failing context");
+
+    calogContextClose(ctx);
+}
+
+
+static void testConcurrentContexts(void) {
+    CalogContextT  *ctxs[3];
+    struct timespec ts = { 0, 500000 };
+    int32_t         i;
+
+    atomic_store(&bumpCount, 0);
+    for (i = 0; i < 3; i++) {
+        ctxs[i] = calogContextOpen(calog, &calogTclEngine);
+        calogContextEval(ctxs[i], "bump\nbump\nbump");
+    }
+    for (i = 0; i < PUMP_LIMIT && atomic_load(&bumpCount) < 9; i++) {
+        calogPump(calog);
+        nanosleep(&ts, NULL);
+    }
+    CHECK(atomic_load(&bumpCount) == 9, "three concurrent Tcl contexts all dispatched to the host thread");
+    for (i = 0; i < 3; i++) {
+        calogContextClose(ctxs[i]);
+    }
+}
+
+
+int main(void) {
+    calog = calogCreate();
+    if (calog == NULL) {
+        printf("calog create failed\n");
+        return 1;
+    }
+    calogSetErrorHandler(calog, onError, NULL);
+    calogRegister(calog, "report", nativeReport, NULL);
+    calogRegister(calog, "setCb", nativeSetCb, NULL);
+    calogRegister(calog, "done", nativeDone, NULL);
+    calogRegister(calog, "bump", nativeBump, NULL);
+    calogRegister(calog, "makeUser", nativeMakeUser, NULL);
+    calogRegister(calog, "reportName", nativeReportName, NULL);
+    calogRegister(calog, "getAdder", nativeGetAdder, NULL);
+    calogRegister(calog, "mapAge", nativeMapAge, NULL);
+    calogRegisterInline(calog, "reportInline", nativeReportInline, NULL);
+
+    testHostAndInlineNatives();
+    testMaterializedRecord();
+    testMapIngress();
+    testForeignFunction();
+    testCrossThreadCallback();
+    testScriptError();
+    testConcurrentContexts();
+
+    calogDestroy(calog);
+
+    printf("\n%d checks, %d failed\n", testsRun, testsFailed);
+    fflush(stdout);
+    if (testsFailed != 0) {
+        return 1;
+    }
+    return 0;
+}

vendor/tcl/.github/workflows/linux-build.yml

@@ -0,0 +1,105 @@
+name: Linux
+on:
+  push:
+    branches:
+    - "main"
+    - "core-9-0-branch"
+    tags:
+    - "core-*"
+permissions:
+  contents: read
+jobs:
+  plan:
+    runs-on: ubuntu-latest
+    outputs:
+      gcc: ${{ steps.matrix.outputs.gcc }}
+    steps:
+      - name: Select build matrix based on branch name
+        id: matrix
+        run: |
+          (
+            echo gcc=$(jq -nc '{config: (if env.IsMatched == "true" then env.FULL else env.PARTIAL end) | fromjson }' )
+          ) | tee -a $GITHUB_OUTPUT
+        env:
+          IsMatched: ${{ github.ref_name == 'main' || github.ref_name == 'core-9-0-branch' }}
+          # DO NOT CHANGE THESE MATRIX SPECS; IT AFFECTS OUR COST CONTROLS
+          FULL: >
+            [
+              "",
+              "CFLAGS=-DTCL_NO_DEPRECATED=1",
+              "--disable-shared",
+              "--disable-zipfs",
+              "--enable-symbols",
+              "--enable-symbols=mem",
+              "--enable-symbols=all",
+              "CFLAGS=-ftrapv",
+              "CFLAGS=-m32 CPPFLAGS=-m32 LDFLAGS=-m32 --disable-64bit"
+            ]
+          PARTIAL: >
+            [
+              "",
+              "--enable-symbols=all",
+              "CFLAGS=-m32 CPPFLAGS=-m32 LDFLAGS=-m32 --disable-64bit"
+            ]
+  gcc:
+    needs: plan
+    runs-on: ubuntu-24.04
+    strategy:
+      matrix: ${{ fromJson(needs.plan.outputs.gcc) }}
+    defaults:
+      run:
+        shell: bash
+        working-directory: unix
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v7
+        timeout-minutes: 5
+      - name: Install 32-bit dependencies if needed
+        # Duplicated from above
+        if: ${{ matrix.config == 'CFLAGS=-m32 CPPFLAGS=-m32 LDFLAGS=-m32 --disable-64bit' }}
+        run: |
+          sudo apt-get update
+          sudo apt-get install gcc-multilib libc6-dev-i386
+      - name: Prepare
+        run: |
+          touch tclStubInit.c tclOOStubInit.c tclOOScript.h
+        working-directory: generic
+      - name: Configure ${{ matrix.config }}
+        run: |
+          mkdir "${HOME}/install dir"
+          ./configure ${CFGOPT} "--prefix=$HOME/install dir" || (cat config.log && exit 1)
+        env:
+          CFGOPT: ${{ matrix.config }}
+        timeout-minutes: 5
+      - name: Build
+        run: |
+          make -j4 all
+        timeout-minutes: 5
+      - name: Build Test Harness
+        run: |
+          make -j4 tcltest
+        timeout-minutes: 5
+      - name: Info
+        run: |
+          ulimit -a || echo 'get limit failed'
+          make runtest SCRIPT=../.github/workflows/info.tcl || echo 'get info failed'
+      - name: Run Tests
+        run: |
+          make test
+        env:
+          ERROR_ON_FAILURES: 1
+        timeout-minutes: 30
+      - name: Test-Drive Installation
+        run: |
+          make install
+        timeout-minutes: 5
+      - name: Create Distribution Package
+        if: ${{ matrix.config == '' }}
+        run: |
+          make dist
+        timeout-minutes: 5
+      - name: Convert Documentation to HTML
+        if: ${{ matrix.config == '' }}
+        run: |
+          make html-tcl
+        timeout-minutes: 5

vendor/tcl/.github/workflows/mac-build.yml

@@ -0,0 +1,106 @@
+name: macOS
+on:
+  push:
+    branches:
+    - "main"
+    - "core-9-0-branch"
+    tags:
+    - "core-*"
+permissions:
+  contents: read
+jobs:
+  plan:
+    runs-on: ubuntu-latest
+    outputs:
+      clang: ${{ steps.matrix.outputs.clang }}
+    steps:
+      - name: Select build matrix based on branch name
+        id: matrix
+        run: |
+          (
+            echo clang=$(jq -nc '{config: (if env.IsMatched == "true" then env.FULL else env.PARTIAL end) | fromjson }' )
+          ) | tee -a $GITHUB_OUTPUT
+        env:
+          IsMatched: ${{ github.ref_name == 'main' || github.ref_name == 'core-9-0-branch' }}
+          # DO NOT CHANGE THIS MATRIX SPEC; IT AFFECTS OUR COST CONTROLS
+          FULL: >
+            [
+              "",
+              "--disable-shared",
+              "--disable-zipfs",
+              "--enable-symbols",
+              "--enable-symbols=mem",
+              "--enable-symbols=all"
+            ]
+          PARTIAL: >
+            [
+              "",
+              "--enable-symbols=all"
+            ]
+  xcode:
+    runs-on: macos-15
+    defaults:
+      run:
+        shell: bash
+        working-directory: macosx
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v7
+        timeout-minutes: 5
+      - name: Prepare
+        run: |
+          touch tclStubInit.c tclOOStubInit.c tclOOScript.h
+        working-directory: generic
+      - name: Build
+        run: make -j4 all
+        env:
+          CFLAGS: -arch x86_64 -arch arm64
+        timeout-minutes: 15
+      - name: Run Tests
+        run: make -j4 test styles=develop
+        env:
+          ERROR_ON_FAILURES: 1
+          MAC_CI: 1
+        timeout-minutes: 15
+  clang:
+    runs-on: macos-15
+    needs: plan
+    strategy:
+      matrix: ${{ fromJson(needs.plan.outputs.clang) }}
+    defaults:
+      run:
+        shell: bash
+        working-directory: unix
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v7
+        timeout-minutes: 5
+      - name: Prepare
+        run: |
+          touch tclStubInit.c tclOOStubInit.c tclOOScript.h
+          mkdir "$HOME/install dir"
+        working-directory: generic
+      - name: Configure ${{ matrix.config }}
+        # Note that macOS is always a 64 bit platform
+        run: ./configure --enable-dtrace --enable-framework ${CFGOPT} "--prefix=$HOME/install" || (cat config.log && exit 1)
+        env:
+          CFLAGS: -arch x86_64 -arch arm64
+          CFGOPT: ${{ matrix.config }}
+        timeout-minutes: 5
+      - name: Build
+        run: |
+          make -j4 all tcltest
+        env:
+          CFLAGS: -arch x86_64 -arch arm64
+        timeout-minutes: 15
+      - name: Info
+        run: |
+          ulimit -a || echo 'get limit failed'
+          make runtest SCRIPT=../.github/workflows/info.tcl || echo 'get info failed'
+      - name: Run Tests
+        run: |
+          make test
+        env:
+          ERROR_ON_FAILURES: 1
+          MAC_CI: 1
+        timeout-minutes: 20

vendor/tcl/.github/workflows/onefiledist.yml

@@ -0,0 +1,243 @@
+name: Build Binaries
+on:
+  push:
+    branches:
+    - "main"
+    - "core-9-0-branch"
+    tags:
+    - "core-*"
+permissions:
+  contents: read
+jobs:
+  linux:
+    name: Linux
+    runs-on: ubuntu-24.04
+    defaults:
+      run:
+        shell: bash
+    timeout-minutes: 10
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v7
+      - name: Prepare
+        run: |
+          touch generic/tclStubInit.c generic/tclOOStubInit.c
+          mkdir 1dist
+          echo "VER_PATH=$(cd tools; pwd)/addVerToFile.tcl" >> $GITHUB_ENV
+        working-directory: .
+      - name: Configure
+        run: ./configure --disable-symbols --disable-shared --enable-zipfs
+        working-directory: unix
+      - name: Build
+        run: |
+          make tclsh
+          make shell SCRIPT="$VER_PATH $GITHUB_ENV"
+          echo "TCL_ZIP=`pwd`/`echo libtcl*.zip`" >> $GITHUB_ENV
+        working-directory: unix
+      - name: Package
+        run: |
+          cp ../unix/tclsh tclsh${TCL_PATCHLEVEL}_snapshot
+          chmod +x tclsh${TCL_PATCHLEVEL}_snapshot
+          tar -cf tclsh${TCL_PATCHLEVEL}_snapshot.tar tclsh${TCL_PATCHLEVEL}_snapshot
+        working-directory: 1dist
+      - name: Info
+        run: |
+          ulimit -a || echo 'get limit failed'
+          echo 'puts exe:\t[info nameofexecutable]\nver:\t[info patchlevel]\t[if {![catch tcl::build-info ret]} {set ret}]\nlib:\t[info library]\nplat:\t[lsort -dictionary -stride 2 [array get tcl_platform]]' | make runtest || echo 'get info failed'
+      - name: Upload
+        uses: actions/upload-artifact@v7
+        with:
+          name: Tclsh ${{ env.TCL_PATCHLEVEL }} Linux single-file build (snapshot)
+          path: 1dist/*.tar
+        id: upload
+    outputs:
+      url: ${{ steps.upload.outputs.artifact-url }}
+  macos:
+    name: macOS
+    runs-on: macos-15-intel
+    defaults:
+      run:
+        shell: bash
+    timeout-minutes: 10
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v7
+      - name: Checkout create-dmg
+        uses: actions/checkout@v7
+        with:
+          repository: create-dmg/create-dmg
+          ref: v1.2.2
+          path: create-dmg
+      - name: Prepare
+        run: |
+          mkdir 1dist
+          touch generic/tclStubInit.c generic/tclOOStubInit.c || true
+          wget https://github.com/culler/macher/releases/download/v1.8/macher
+          sudo cp macher /usr/local/bin
+          sudo chmod a+x /usr/local/bin/macher
+          echo "VER_PATH=$(cd tools; pwd)/addVerToFile.tcl" >> $GITHUB_ENV
+          echo "CREATE_DMG=$(cd create-dmg;pwd)/create-dmg" >> $GITHUB_ENV
+          echo "CFLAGS=-arch x86_64 -arch arm64" >> $GITHUB_ENV
+      - name: Configure
+        run: ./configure --disable-symbols --disable-shared --enable-zipfs
+        working-directory: unix
+      - name: Build
+        run: |
+          make -j4 tclsh
+          make -j4 shell SCRIPT="$VER_PATH $GITHUB_ENV"
+          echo "TCL_BIN=`pwd`/tclsh" >> $GITHUB_ENV
+          echo "TCL_ZIP=`pwd`/`echo libtcl*.zip`" >> $GITHUB_ENV
+        working-directory: unix
+      - name: Package
+        run: |
+          mkdir contents
+          cp $TCL_BIN contents/tclsh${TCL_PATCHLEVEL}_snapshot
+          chmod +x contents/tclsh${TCL_PATCHLEVEL}_snapshot
+          cat > contents/README.txt <<EOF
+          This is a single-file executable developer preview of Tcl $TCL_PATCHLEVEL
+
+          It is not intended as an official release at all, so it is unsigned and unnotarized.
+          Use strictly at your own risk.
+
+          To run it, you need to copy the executable out and run:
+              xattr -d com.apple.quarantine tclsh${TCL_PATCHLEVEL}_snapshot
+          to mark the executable as runnable on your machine.
+          EOF
+          $CREATE_DMG \
+              --volname "Tcl $TCL_PATCHLEVEL (snapshot)" \
+              --window-pos 200 120 \
+              --window-size 800 400 \
+              "Tcl-$TCL_PATCHLEVEL-(snapshot).dmg" \
+              "contents/"
+        working-directory: 1dist
+      - name: Info
+        run: |
+          ulimit -a || echo 'get limit failed'
+          echo 'puts exe:\t[info nameofexecutable]\nver:\t[info patchlevel]\t[if {![catch tcl::build-info ret]} {set ret}]\nlib:\t[info library]\nplat:\t[lsort -dictionary -stride 2 [array get tcl_platform]]' | make runtest || echo 'get info failed'
+      - name: Upload
+        uses: actions/upload-artifact@v7
+        with:
+          name: Tclsh ${{ env.TCL_PATCHLEVEL }} macOS single-file build (snapshot)
+          path: 1dist/*.dmg
+        id: upload
+    outputs:
+      url: ${{ steps.upload.outputs.artifact-url }}
+  win:
+    name: Windows
+    runs-on: windows-2025
+    defaults:
+      run:
+        shell: msys2 {0}
+    timeout-minutes: 10
+    env:
+      CC: gcc
+      CFGOPT: --disable-symbols --disable-shared
+    steps:
+      - name: Install MSYS2
+        uses: msys2/setup-msys2@v2
+        with:
+          msystem: UCRT64
+          install: git mingw-w64-ucrt-x86_64-toolchain make zip
+      - name: Checkout
+        uses: actions/checkout@v7
+      - name: Prepare
+        run: |
+          touch generic/tclStubInit.c generic/tclOOStubInit.c
+          echo "VER_PATH=$(cd tools; pwd)/addVerToFile.tcl" >> $GITHUB_ENV
+          mkdir 1dist
+        working-directory: .
+      - name: Configure
+        run: ./configure $CFGOPT
+        working-directory: win
+      - name: Build
+        run: |
+          make binaries libraries
+          echo "TCL_ZIP=`pwd`/`echo libtcl*.zip`" >> $GITHUB_ENV
+        working-directory: win
+      - name: Get Exact Version
+        run: |
+          ./tclsh*.exe $VER_PATH $GITHUB_ENV
+        working-directory: win
+      - name: Set Executable Name
+        run: |
+          cp ../win/tclsh*.exe tclsh${TCL_PATCHLEVEL}_snapshot.exe
+        working-directory: 1dist
+      - name: Info
+        run: |
+          ulimit -a || echo 'get limit failed'
+          echo 'puts exe:\t[info nameofexecutable]\nver:\t[info patchlevel]\t[if {![catch tcl::build-info ret]} {set ret}]\nlib:\t[info library]\nplat:\t[lsort -dictionary -stride 2 [array get tcl_platform]]' | make runtest || echo 'get info failed'
+      - name: Upload
+        uses: actions/upload-artifact@v7
+        with:
+          name: Tclsh ${{ env.TCL_PATCHLEVEL }} Windows single-file build (snapshot)
+          path: '1dist/*_snapshot.exe'
+        id: upload
+    outputs:
+      url: ${{ steps.upload.outputs.artifact-url }}
+  combine:
+    needs:
+      - linux
+      - macos
+      - win
+    name: Combine Artifacts (prototype)
+    runs-on: ubuntu-latest
+    defaults:
+      run:
+        shell: bash
+    timeout-minutes: 10
+    env:
+      # See also
+      # https://docs.github.com/en/actions/writing-workflows/choosing-what-your-workflow-does/store-information-in-variables
+      REMOTE_PATH: ${{ vars.PUBLISH_DROP_PATH }}/data-${{ github.sha }}
+    steps:
+      - name: Make directory
+        run: |
+          mkdir data
+      - name: Get Linux build
+        uses: actions/download-artifact@v8
+        with:
+          path: data
+          # Can't download by artifact ID; stupid missing feature!
+          merge-multiple: true
+      - name: Check data downloaded
+        run: |
+          ls -AlR
+        working-directory: data
+      - name: Transfer built files
+        # https://github.com/marketplace/actions/rsync-deployments-action
+        uses: burnett01/rsync-deployments@8.0.5
+        id: rsync
+        if: false  # Disabled... for now
+        with:
+          # I don't know what the right switches are here, BTW
+          switches: -avzr
+          path: data/
+          remote_path: ${{ env.REMOTE_PATH }}
+          remote_host: ${{ vars.PUBLISH_HOST }}
+          remote_user: ${{ vars.PUBLISH_USER }}
+          remote_key: ${{ secrets.DEPLOY_HOST_KEY }}
+          # MUST be a literal passwordless key
+      - name: Publish files
+        # https://github.com/marketplace/actions/ssh-remote-commands
+        uses: appleboy/ssh-action@v1.2.5
+        id: ssh
+        if: steps.rsync.outcome == 'success'
+        with:
+          host: ${{ vars.PUBLISH_HOST }}
+          username: ${{ vars.PUBLISH_USER }}
+          key: ${{ secrets.DEPLOY_HOST_KEY }}
+          script: |
+            ${{ vars.PUBLISHER_SCRIPT }} ${{ env.REMOTE_PATH }} ${{ github.ref_type }} ${{ github.ref_name }}
+      - name: Report what would be done
+        if: steps.rsync.outcome == 'skipped'
+        env:
+          SWITCHES: -av
+          LOCAL_PATH: data/
+          REMOTE_HOST: ${{ vars.PUBLISH_HOST }}
+          REMOTE_USER: ${{ vars.PUBLISH_USER }}
+          REMOTE_SCRIPT: |
+            ${{ vars.PUBLISHER_SCRIPT }} ${{ env.REMOTE_PATH }} ${{ github.ref_type }} ${{ github.ref_name }}
+        run: |
+          echo "would run: rsync $SWITCHES $LOCAL_PATH $REMOTE_USER@$REMOTE_HOST:$REMOTE_PATH"
+          echo "would run: ssh $REMOTE_USER@$REMOTE_HOST $REMOTE_SCRIPT"
+      # Consider https://github.com/marketplace/actions/slack-notify maybe?

vendor/tcl/.github/workflows/win-build.yml

@@ -0,0 +1,148 @@
+name: Windows
+on:
+  push:
+    branches:
+    - "main"
+    - "core-9-0-branch"
+    tags:
+    - "core-*"
+permissions:
+  contents: read
+jobs:
+  plan:
+    runs-on: ubuntu-latest
+    outputs:
+      msvc: ${{ steps.matrix.outputs.msvc }}
+      gcc: ${{ steps.matrix.outputs.gcc }}
+    steps:
+      - name: Select build matrix based on branch name
+        id: matrix
+        run: |
+          (
+            echo msvc=$(jq -nc '{config: (if env.IsMatched == "true" then env.MSVC_FULL else env.MSVC_PARTIAL end) | fromjson }' )
+            echo gcc=$(jq -nc '{config: (if env.IsMatched == "true" then env.GCC_FULL else env.GCC_PARTIAL end) | fromjson }' )
+          ) | tee -a $GITHUB_OUTPUT
+        env:
+          IsMatched: ${{ github.ref_name == 'main' || github.ref_name == 'core-9-0-branch' }}
+          # DO NOT CHANGE THESE MATRIX SPECS; IT AFFECTS OUR COST CONTROLS
+          MSVC_FULL: >
+            [
+              "",
+              "CHECKS=nodep",
+              "OPTS=static",
+              "OPTS=noembed",
+              "OPTS=symbols",
+              "OPTS=symbols STATS=compdbg,memdbg"
+            ]
+          MSVC_PARTIAL: >
+            [
+              "",
+              "OPTS=symbols STATS=compdbg,memdbg"
+            ]
+          GCC_FULL: >
+            [
+              "",
+              "CFLAGS=-DTCL_NO_DEPRECATED=1",
+              "--disable-shared",
+              "--disable-zipfs",
+              "--enable-symbols",
+              "--enable-symbols=mem",
+              "--enable-symbols=all"
+            ]
+          GCC_PARTIAL: >
+            [
+              "",
+              "--disable-shared",
+              "--enable-symbols=all"
+            ]
+  msvc:
+    runs-on: windows-2025
+    needs: plan
+    defaults:
+      run:
+        shell: powershell
+        working-directory: win
+    strategy:
+      matrix: ${{ fromJson(needs.plan.outputs.msvc) }}
+    # Using powershell means we need to explicitly stop on failure
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v7
+        timeout-minutes: 5
+      - name: Init MSVC
+        uses: ilammy/msvc-dev-cmd@v1
+        timeout-minutes: 5
+      - name: Build ${{ matrix.config }}
+        run: |
+          &nmake -f makefile.vc ${{ matrix.config }} all
+          if ($lastexitcode -ne 0) {
+             throw "nmake exit code: $lastexitcode"
+          }
+        timeout-minutes: 5
+      - name: Build Test Harness ${{ matrix.config }}
+        run: |
+          &nmake -f makefile.vc ${{ matrix.config }} tcltest
+          if ($lastexitcode -ne 0) {
+             throw "nmake exit code: $lastexitcode"
+          }
+        timeout-minutes: 5
+      - name: Run Tests ${{ matrix.config }}
+        run: |
+          &nmake -f makefile.vc ${{ matrix.config }} test
+          if ($lastexitcode -ne 0) {
+             throw "nmake exit code: $lastexitcode"
+          }
+        timeout-minutes: 30
+        env:
+          ERROR_ON_FAILURES: 1
+  gcc:
+    runs-on: windows-2025
+    needs: plan
+    defaults:
+      run:
+        shell: msys2 {0}
+        working-directory: win
+    strategy:
+      matrix: ${{ fromJson(needs.plan.outputs.gcc) }}
+    steps:
+      - name: Install MSYS2
+        uses: msys2/setup-msys2@v2
+        with:
+          msystem: MINGW64
+          install: git mingw-w64-x86_64-toolchain make
+        timeout-minutes: 10
+      - name: Checkout
+        uses: actions/checkout@v7
+        timeout-minutes: 5
+      - name: Prepare
+        run: |
+          touch tclStubInit.c tclOOStubInit.c tclOOScript.h
+          mkdir "${HOME}/install dir"
+        working-directory: generic
+      - name: Configure ${{ matrix.config }}
+        run: |
+          ./configure ${CFGOPT} "--prefix=$HOME/install dir" || (cat config.log && exit 1)
+        env:
+          CFGOPT: --enable-64bit ${{ matrix.config }}
+        timeout-minutes: 5
+      - name: Build
+        run: make -j4 all
+        timeout-minutes: 5
+      - name: Build Test Harness
+        run: make -j4 tcltest
+        timeout-minutes: 5
+      - name: Info
+        run: |
+          ulimit -a || echo 'get limit failed'
+          make runtest SCRIPT=../.github/workflows/info.tcl || echo 'get info failed'
+      - name: Run Tests
+        run: make test
+        timeout-minutes: 30
+        env:
+          ERROR_ON_FAILURES: 1
+      - name: Install
+        run: make install
+        timeout-minutes: 5
+
+# If you add builds with Wine, be sure to define the environment variable
+# CI_USING_WINE when running them so that broken tests know not to run.

vendor/tcl/README.md

@@ -0,0 +1,156 @@
+# README:  Tcl
+
+This is the **Tcl 9.0.4** source distribution.
+
+You can get any source release of Tcl from [our distribution
+site](https://sourceforge.net/projects/tcl/files/Tcl/).
+
+9.1 (in development, daily build)
+[![Build Status](https://github.com/tcltk/tcl/actions/workflows/linux-build.yml/badge.svg?branch=main)](https://github.com/tcltk/tcl/actions/workflows/linux-build.yml?query=branch%3Amain)
+[![Build Status](https://github.com/tcltk/tcl/actions/workflows/win-build.yml/badge.svg?branch=main)](https://github.com/tcltk/tcl/actions/workflows/win-build.yml?query=branch%3Amain)
+[![Build Status](https://github.com/tcltk/tcl/actions/workflows/mac-build.yml/badge.svg?branch=main)](https://github.com/tcltk/tcl/actions/workflows/mac-build.yml?query=branch%3Amain)
+<br>
+9.0 (production release, daily build)
+[![Build Status](https://github.com/tcltk/tcl/actions/workflows/linux-build.yml/badge.svg?branch=core-9-0-branch)](https://github.com/tcltk/tcl/actions/workflows/linux-build.yml?query=branch%3Acore-9-0-branch)
+[![Build Status](https://github.com/tcltk/tcl/actions/workflows/win-build.yml/badge.svg?branch=core-9-0-branch)](https://github.com/tcltk/tcl/actions/workflows/win-build.yml?query=branch%3Acore-9-0-branch)
+[![Build Status](https://github.com/tcltk/tcl/actions/workflows/mac-build.yml/badge.svg?branch=core-9-0-branch)](https://github.com/tcltk/tcl/actions/workflows/mac-build.yml?query=branch%3Acore-9-0-branch)
+
+## Contents
+ 1. [Introduction](#intro)
+ 2. [Documentation](#doc)
+ 3. [Compiling and installing Tcl](#build)
+ 4. [Development tools](#devtools)
+ 5. [Tcl newsgroup](#complangtcl)
+ 6. [The Tcler's Wiki](#wiki)
+ 7. [Mailing lists](#email)
+ 8. [Support and Training](#support)
+ 9. [Tracking Development](#watch)
+ 10. [Thank You](#thanks)
+
+## <a id="intro">1.</a> Introduction
+Tcl provides a powerful platform for creating integration applications that
+tie together diverse applications, protocols, devices, and frameworks.
+When paired with the Tk toolkit, Tcl provides the fastest and most powerful
+way to create GUI applications that run on PCs, Unix, and macOS.
+Tcl can also be used for a variety of web-related tasks and for creating
+powerful command languages for applications.
+
+Tcl is maintained, enhanced, and distributed freely by the Tcl community.
+Source code development and tracking of bug reports and feature requests
+take place at [core.tcl-lang.org](https://core.tcl-lang.org/).
+Tcl/Tk release and mailing list services are [hosted by
+SourceForge](https://sourceforge.net/projects/tcl/)
+with the Tcl Developer Xchange hosted at
+[www.tcl-lang.org](https://www.tcl-lang.org).
+
+Tcl is a freely available open-source package.  You can do virtually
+anything you like with it, such as modifying it, redistributing it,
+and selling it either in whole or in part.  See the file
+`license.terms` for complete information.
+
+## <a id="doc">2.</a> Documentation
+Extensive documentation is available on our website.
+The home page for this release, including new features, is
+[here](https://www.tcl-lang.org/software/tcltk/9.0.html).
+Detailed release notes can be found at the
+[file distributions page](https://sourceforge.net/projects/tcl/files/Tcl/)
+by clicking on the relevant version.
+
+Information about Tcl itself can be found at the [Developer
+Xchange](https://www.tcl-lang.org/about/).
+There have been many Tcl books on the market.  Many are mentioned in
+[the Wiki](https://wiki.tcl-lang.org/_/ref?N=25206).
+
+The complete set of reference manual entries for Tcl 9.0 is [online,
+here](https://www.tcl-lang.org/man/tcl9.0/).
+
+### <a id="doc.unix">2a.</a> Unix Documentation
+The `doc` subdirectory in this release contains a complete set of
+reference manual entries for Tcl.  Files with extension "`.1`" are for
+programs (for example, `tclsh.1`); files with extension "`.3`" are for C
+library procedures; and files with extension "`.n`" describe Tcl
+commands.  The file "`doc/Tcl.n`" gives a quick summary of the Tcl
+language syntax.  To print any of the man pages on Unix, cd to the
+"doc" directory and invoke your favorite variant of troff using the
+normal -man macros, for example
+
+		groff -man -Tpdf Tcl.n >output.pdf
+
+to print Tcl.n to PDF.  If Tcl has been installed correctly and your "man" program
+supports it, you should be able to access the Tcl manual entries using the
+normal "man" mechanisms, such as
+
+		man Tcl
+
+### <a id="doc.win">2b.</a> Windows Documentation
+The "doc" subdirectory in this release contains a complete set of Windows
+help files for Tcl.  Once you install this Tcl release, a shortcut to the
+Windows help Tcl documentation will appear in the "Start" menu:
+
+		Start | Programs | Tcl | Tcl Help
+
+## <a id="build">3.</a> Compiling and installing Tcl
+There are brief notes in the `unix/README`, `win/README`, and `macosx/README`
+about compiling on these different platforms.  There is additional information
+about building Tcl from sources
+[online](https://www.tcl-lang.org/doc/howto/compile.html).
+
+## <a id="devtools">4.</a> Development tools
+ActiveState produces a high-quality set of commercial quality development
+tools that is available to accelerate your Tcl application development.
+Tcl Dev Kit builds on the earlier TclPro toolset and provides a debugger,
+static code checker, single-file wrapping utility, bytecode compiler, and
+more.  More information can be found at
+
+	https://www.activestate.com/products/tcl/
+
+## <a id="complangtcl">5.</a> Tcl newsgroup
+There is a USENET newsgroup, "`comp.lang.tcl`", intended for the exchange of
+information about Tcl, Tk, and related applications.  The newsgroup is a
+great place to ask general information questions.  For bug reports, please
+see the "Support and bug fixes" section below.
+
+## <a id="wiki">6.</a> Tcl'ers Wiki
+There is a [wiki-based open community site](https://wiki.tcl-lang.org/)
+covering all aspects of Tcl/Tk.
+
+It is dedicated to the Tcl programming language and its extensions.  A
+wealth of useful information can be found there.  It contains code
+snippets, references to papers, books, and FAQs, as well as pointers to
+development tools, extensions, and applications.  You can also recommend
+additional URLs by editing the wiki yourself.
+
+## <a id="email">7.</a> Mailing lists
+Several mailing lists are hosted at SourceForge to discuss development or use
+issues (like Macintosh and Windows topics).  For more information and to
+subscribe, visit [here](https://sourceforge.net/projects/tcl/) and go to the
+Mailing Lists page.
+
+## <a id="support">8.</a> Support and Training
+We are very interested in receiving bug reports, patches, and suggestions for
+improvements.  We prefer that you send this information to us as tickets
+entered into [our issue tracker](https://core.tcl-lang.org/tcl/reportlist).
+
+We will log and follow-up on each bug, although we cannot promise a
+specific turn-around time.  Enhancements may take longer and may not happen
+at all unless there is widespread support for them (we're trying to
+slow the rate at which Tcl/Tk turns into a kitchen sink).  It's very
+difficult to make incompatible changes to Tcl/Tk at this point, due to
+the size of the installed base.
+
+The Tcl community is too large for us to provide much individual support for
+users.  If you need help we suggest that you post questions to `comp.lang.tcl`
+or ask a question on [Stack
+Overflow](https://stackoverflow.com/questions/tagged/tcl).  We read the
+newsgroup and will attempt to answer esoteric questions for which no one else
+is likely to know the answer.  In addition, see the wiki for [links to other
+organizations](https://wiki.tcl-lang.org/training) that offer Tcl/Tk training.
+
+## <a id="watch">9.</a> Tracking Development
+Tcl is developed in public.  You can keep an eye on how Tcl is changing at
+[core.tcl-lang.org](https://core.tcl-lang.org/).
+
+## <a id="thanks">10.</a> Thank You
+We'd like to express our thanks to the Tcl community for all the
+helpful suggestions, bug reports, and patches we have received.
+Tcl/Tk has improved vastly and will continue to do so with your help.

vendor/tcl/changes.md

@@ -0,0 +1,290 @@
+
+The source code for Tcl is managed by fossil.  Tcl developers coordinate all
+changes to the Tcl source code at
+
+> [Tcl Source Code](https://core.tcl-lang.org/tcl/timeline)
+
+Release Tcl 9.0.4 arises from the check-in with tag `core-9-0-4`.
+
+Tcl patch releases have the primary purpose of delivering bug fixes
+to the userbase.
+
+# Bug fixes
+ - [unsupported commands should not be available in safe interpreters](https://core.tcl-lang.org/tcl/tktview/82d12c)
+ - [Check for -municode doesn't work on WSL](https://core.tcl-lang.org/tcl/tktview/632710)
+ - [configure --enable-man-compression error](https://core.tcl-lang.org/tcl/tktview/886549)
+ - [nmake: rmdir and mkdir are picked from cygwin if available](https://core.tcl-lang.org/tcl/tktview/be40b7)
+ - [lseq: has incorrect results in edge cases](https://core.tcl-lang.org/tcl/tktview/999b69)
+ - [lseq: "count" error persists across calls](https://core.tcl-lang.org/tcl/tktview/8d1fc7)
+ - [lseq: Remove the ability to pass expressions as numeric values in the lseq command.](https://core.tcl-lang.org/tips/doc/trunk/tip/746.md)
+ - [Performance regression in expr in/ni operators](https://core.tcl-lang.org/tcl/info/8994c9)
+ - [Uninitialized memory access in setting script limits](https://core.tcl-lang.org/tcl/info/f7495f)
+ - [Crash when defining const if namespace does not exist](https://core.tcl-lang.org/tcl/info/4b22d8)
+ - [Glob errors with -directory option and patterns containing absolute paths (Windows)](https://core.tcl-lang.org/tcl/info/b0682c)
+ - [Glob errors with -directory option with trailing backslash (Windows)](https://core.tcl-lang.org/tcl/info/b0682c)
+ - [File normalization inconsistency for glob result (Windows)](https://core.tcl-lang.org/tcl/info/108904)
+ - [Avoid ClockClientData typedef redefinition](https://core.tcl-lang.org/tcl/info/4724f3)
+ - [Building sqlite3 for tcl8 redefines typedef](https://core.tcl-lang.org/tcl/info/ad08bc)
+ - [Inconsistent file join with volume-relative arguments](https://core.tcl-lang.org/tcl/info/1215dc)
+ - [mind PTHREAD_NULL as sentinel value vs legitimate pthread_t arg](https://core.tcl-lang.org/tcl/info/673f2d)
+ - [fileevent poor performance due to shimmering](https://core.tcl-lang.org/tcl/info/7da6c2)
+
+# Updated bundled packages, libraries, standards, data
+ - autoconf 2.73
+ - http 2.10.2
+ - Itcl 4.3.8
+ - sqlite3 3.53.0
+ - tcltest 2.5.11
+ - Thread 3.0.6
+ - tzdata 2026b
+ - zlib 1.3.2
+
+Release Tcl 9.0.3 arises from the check-in with tag `core-9-0-3`.
+
+Tcl patch releases have the primary purpose of delivering bug fixes
+to the userbase.
+
+# Bug fixes
+ - [On Unix, IsTimeNative() always defined but not always used](https://core.tcl-lang.org/tcl/tktview/6b8e39)
+ - [Tweak install permissions](https://core.tcl-lang.org/tcl/tktview/31d4fa)
+ - [interp creation resets encoding directory search path](https://core.tcl-lang.org/tcl/tktview/87b697)
+ - [Pointer arithmetic with NULL in buildInfoObjCmd()](https://core.tcl-lang.org/tcl/tktview/85fc8b)
+ - [TclPushVarName(): pointer overflow](https://core.tcl-lang.org/tcl/tktview/77059c)
+ - [Add IWYU export pragma annotations](https://core.tcl-lang.org/tcl/tktview/c7dc59)
+ - [Windows: Install man pages](https://core.tcl-lang.org/tcl/tktview/3161b7)
+ - [Windows: Install pkgconfig](https://core.tcl-lang.org/tcl/tktview/1cf49a)
+ - [Non-existent variables are ignored if re is {}](https://core.tcl-lang.org/tcl/tktview/cb03e5)
+ - [bug in single-argument 'max' with bignums](https://core.tcl-lang.org/tcl/tktview/8dd280)
+ - [Windows static builds: package require registry dde fails in child interpreters](https://core.tcl-lang.org/tcl/tktview/4f06d7)
+ - [Windows static builds: registry command is available in main interpreter without package require](https://core.tcl-lang.org/tcl/tktview/6094de)
+
+# Updated bundled packages, libraries, standards, data
+ - Itcl 4.3.5
+ - http 2.10.1
+ - opt 0.4.10
+ - platform 1.1.0
+ - sqlite3 3.51.0
+ - tcltest 2.5.10
+ - Thread 3.0.4
+ - TDBC\* 1.1.13
+ - dde 1.4.6
+ - Unicode 17.0.0
+
+Release Tcl 9.0.2 arises from the check-in with tag `core-9-0-2`.
+
+Tcl patch releases have the primary purpose of delivering bug fixes
+to the userbase.
+
+# New commands and options
+ - [New command encoding user](https://core.tcl-lang.org/tips/doc/trunk/tip/716.md)
+ - [New exec option -encoding](https://core.tcl-lang.org/tips/doc/trunk/tip/716.md)
+
+# Bug fixes
+ - [Better error-message than "interpreter uses an incompatible stubs mechanism"](https://core.tcl-lang.org/tcl/tktview/fc3509)
+ - [\[$interp eval $lambda\] after \[eval $lambda\] or vice versa fails](https://core.tcl-lang.org/tcl/tktview/67d5f7)
+ - [tcl::mathfunc::isunordered inconsistency with some integer values](https://core.tcl-lang.org/tcl/tktview/98006f)
+ - [test lseq hangs with -Os](https://core.tcl-lang.org/tcl/tktview/d2a3c5)
+ - [exec does not handle app execution aliases on Windows](https://core.tcl-lang.org/tcl/tktview/4f0b57)
+ - [auto_execok does not find several built-in cmd commands](https://core.tcl-lang.org/tcl/tktview/4e2c8b)
+ - [Panic "Buffer Underflow, BUFFER_PADDING not enough"](https://core.tcl-lang.org/tcl/tktview/73bb42)
+ - [MS-VS build system: pckIndex.tcl when building for 9 misses "t" for TCL 8.6 part](https://core.tcl-lang.org/tcl/tktview/a77029)
+ - [clock format -locale does not look up locale children if parent locale used first](https://core.tcl-lang.org/tcl/tktview/2c0f49)
+ - [Missing libtcl?.?.dll.a in Cygwin](https://core.tcl-lang.org/tcl/tktview/dcedba)
+ - [tclEpollNotfy PlatformEventsControl panics if websocket disconnected](https://core.tcl-lang.org/tcl/tktview/010d8f)
+ - [Tcl_InitStubs compatibility for 9.1](https://core.tcl-lang.org/tcl/tktview/fd8341)
+ - [proc with more than 2**31 variables](https://core.tcl-lang.org/tcl/tktview/92aeb8)
+ - [scan "long mantissa" %g](https://core.tcl-lang.org/tcl/tktview/42d14c)
+ - ["encoding system": wrong result without manifest](https://core.tcl-lang.org/tcl/tktview/8ffd8c)
+ - [lseq crash on out-of-range index](https://core.tcl-lang.org/tcl/tktview/7d3101)
+ - [lseq crash on nested indices](https://core.tcl-lang.org/tcl/tktview/452b10)
+ - [Build broken (trunk branch) tclCompExpr.c tclOOCall.c](https://core.tcl-lang.org/tcl/tktview/1dcda0)
+ - [Memory allocation runaway on truncated iso2022 encoding](https://core.tcl-lang.org/tcl/tktview/7346ad)
+ - [Missing include dir for extensions in non-default locations](https://core.tcl-lang.org/tcl/tktview/333512)
+ - [tcl::tm::path doesn't handle tilde expand](https://core.tcl-lang.org/tcl/tktview/b87673)
+ - [lseq numeric overflow](https://core.tcl-lang.org/tcl/tktview/0ee626)
+ - ["return": broken ordering of nested -options](https://core.tcl-lang.org/tcl/tktview/ecf35c)
+ - [Euro/Tail-sign missing from cp864 encoding](https://core.tcl-lang.org/tcl/tktview/ecafd8)
+ - [use after free on TSD in Winsock](https://core.tcl-lang.org/tcl/tktview/40b181)
+ - [use after free on Windows pipe handles](https://core.tcl-lang.org/tcl/tktview/7c2716)
+ - [tcl::build-info not documented](https://core.tcl-lang.org/tcl/tktview/ef7042)
+ - [Fix 32 bit overflow in interp limit](https://core.tcl-lang.org/tcl/tktview/9dfae3)
+
+# Incompatibilities
+ - [The ActiveCodePage element has been removed from the Windows executable manifest for tclsh](https://core.tcl-lang.org/tips/doc/trunk/tip/716.md)
+
+# Updated bundled packages, libraries, standards, data
+ - Itcl 4.3.3
+ - sqlite3 3.49.1
+ - Thread 3.0.2
+ - TDBC\* 1.1.11
+ - tzdata 2025b
+
+Release Tcl 9.0.1 arises from the check-in with tag `core-9-0-1`.
+
+Tcl patch releases have the primary purpose of delivering bug fixes
+to the userbase.  As the first patch release in the Tcl 9.0.\* series,
+Tcl 9.0.1 also includes a small number of interface changes that complete
+some incomplete features first delivered in Tcl 9.0.0.
+
+# Completed 9.0 Features and Interfaces
+ - [TIP 701 - Tcl_FSTildeExpand C API](https://core.tcl-lang.org/tips/doc/trunk/tip/701.md)
+ - [TIP 707 - ptrAndSize internal rep in Tcl_Obj](https://core.tcl-lang.org/tips/doc/trunk/tip/707.md)
+ - [Size modifiers j, q, z, t not implemented]( https://core.tcl-lang.org/tcl/info/c4f365)
+
+# Bug fixes
+ - [regression in tzdata, %z instead of offset TZ-name](https://core.tcl-lang.org/tcl/tktview/2c237b)
+ - [Tcl will not start properly if there is an init.tcl file in the current dir](https://core.tcl-lang.org/tcl/tktview/43c94f)
+ - [clock scan "24:00", ISO-8601 compatibility](https://core.tcl-lang.org/tcl/tktview/aee9f2)
+ - [Temporary folder with file "tcl9registry13.dll" remains after "exit"](https://core.tcl-lang.org/tcl/tktview/6ce3c0)
+ - [Wrong result by "lsearch -stride -subindices -inline -all"](https://core.tcl-lang.org/tcl/info/5a1aaa)
+ - [TIP 609 - required Tcl_ThreadAlert() skipped with nested event loop](https://core.tcl-lang.org/tcl/info/c7e4c4)
+ - [buffer overwrite for non-BMP characters in utf-16](https://core.tcl-lang.org/tcl/tktview/66da4d)
+ - [zipfs info on mountpoint of executable returns zero offset in field 4"](https://core.tcl-lang.org/tcl/info/aaa84f)
+ - [zlib-8.8, zlib-8.16 fail on Fedora 40, gcc 14.1.1](https://core.tcl-lang.org/tcl/tktview/73d5cb)
+ - [install registry and dde in $INSTALL_DIR\lib always](https://core.tcl-lang.org/tcl/tktview/364bd9)
+ - [cannot build .chm help file (Windows)](https://core.tcl-lang.org/tcl/tktview/bb110c)
+
+# Incompatibilities
+ - No known incompatibilities with the Tcl 9.0.0 public interface.
+
+# Updated bundled packages, libraries, standards, data
+ - Itcl 4.3.2
+ - sqlite3 3.47.2
+ - Thread 3.0.1
+ - TDBC\* 1.1.10
+ - tcltest 2.5.9
+ - tzdata 2024b, corrected
+
+Release Tcl 9.0.0 arises from the check-in with tag `core-9-0-0`.
+
+Highlighted differences between Tcl 9.0 and Tcl 8.6 are summarized below,
+with focus on changes important to programmers using the Tcl library and
+writing Tcl scripts.
+
+# Major Features
+
+## 64-bit capacity: Data values larger than 2Gb
+ - Strings can be any length (that fits in your available memory)
+ - Lists and dictionaries can have very large numbers of elements
+
+## Internationalization of text
+ - Full Unicode range of codepoints
+ - New encodings: `utf-16`/`utf-32`/`ucs-2`(`le`|`be`), `CESU-8`, etc.
+ - `encoding` options `-profile`, `-failindex` manage encoding of I/O.
+ - `msgcat` supports custom locale search list
+ - `source` defaults to `-encoding utf-8`
+
+## Zip filesystems and attached archives.
+ - Packaging of the Tcl script library with the Tcl binary library,
+   meaning that the `TCL_LIBRARY` environment variable is usually not required.
+ - Packaging of an application into a virtual filesystem is now a supported
+   core Tcl feature.
+
+## Unix notifiers available using `epoll()` or `kqueue()`
+ - This relieves limits on file descriptors imposed by legacy `select()` and fixes a performance bottleneck.
+
+# Incompatibilities
+
+## Notable incompatibilities
+ - Unqualified varnames resolved in current namespace, not global.
+   Note that in almost all cases where this causes a change, the change is actually the removal of a latent bug.
+ - No `--disable-threads` build option.  Always thread-enabled.
+ - I/O malencoding default response: raise error (`-profile strict`)
+ - Windows platform needs Windows 7 or Windows Server 2008 R2 or later
+ - Ended interpretation of `~` as home directory in pathnames.
+   (See `file home` and `file tildeexpand` for replacements when you need them.)
+ - Removed the `identity` encoding.
+   (There were only ever very few valid use cases for this; almost all uses
+   were systematically wrong.)
+ - Removed the encoding alias `binary` to `iso8859-1`.
+ - `$::tcl_precision` no longer controls string generation of doubles.
+   (If you need a particular precision, use `format`.)
+ - Removed pre-Tcl 8 legacies: `case`, `puts` and `read` variant syntaxes.
+ - Removed subcommands [`trace variable`|`vdelete`|`vinfo`]
+ - Removed `-eofchar` option for write channels.
+ - On Windows 10+ (Version 1903 or higher), system encoding is always utf-8.
+ - `%b`/`%d`/`%o`/`%x` format modifiers (without size modifier) for `format`
+   and `scan` always truncate to 32-bits on all platforms.
+ - `%L` size modifier for `scan` no longer truncates to 64-bit.
+ - Removed command `::tcl::unsupported::inject`.
+   (See `coroinject` and `coroprobe` for supported commands with significantly
+   more comprehensible semantics.)
+
+## Incompatibilities in C public interface
+ - Extensions built against Tcl 8.6 and before will not work with Tcl 9.0;
+   ABI compatibility was a non-goal for 9.0.  In _most_ cases, rebuilding
+   against Tcl 9.0 should work except when a removed API function is used.
+ - Many arguments expanded type from `int` to `Tcl_Size`, a signed integer type
+   large enough to support 64-bit sized memory objects.
+   The constant `TCL_AUTO_LENGTH` is a value of that type that indicates that
+   the length should be obtained using an appropriate function (typically `strlen()` for `char *` values).
+ - Ended support for `Tcl_ChannelTypeVersion` less than 5
+ - Introduced versioning of the `Tcl_ObjType` struct
+ - Removed macros `CONST*`: Tcl 9 support means dropping Tcl 8.3 support.
+   (Replaced with standard C `const` keyword going forward.)
+ - Removed registration of several `Tcl_ObjType`s.
+ - Removed API functions:
+
+     `Tcl_Backslash()`,
+     `Tcl_*VA()`,
+     `Tcl_*MathFunc*()`,
+     `Tcl_MakeSafe()`,
+     `Tcl_(Save|Restore|Discard|Free)Result()`,
+     `Tcl_EvalTokens()`,
+     `Tcl_(Get|Set)DefaultEncodingDir()`,
+     `Tcl_UniCharN(case)cmp()`,
+     `Tcl_UniCharCaseMatch()`
+
+ - Revised many internals; beware reliance on undocumented behaviors.
+
+# New Features
+
+## New commands
+ - `array default` — Specify default values for arrays (note that this alters the behaviour of `append`, `incr`, `lappend`).
+ - `array for` — Cheap iteration over an array's contents.
+ - `chan isbinary` — Test if a channel is configured to work with binary data.
+ - `coroinject`, `coroprobe` — Interact with paused coroutines.
+ - `clock add weekdays` — Clock arithmetic with week days.
+ - `const`, `info const*` — Commands for defining constants (variables that can't be modified).
+ - `dict getwithdefault` — Define a fallback value to use when `dict get` would otherwise fail.
+ - `file home` — Get the user home directory.
+ - `file tempdir` — Create a temporary directory.
+ - `file tildeexpand` — Expand a file path containing a `~`.
+ - `info commandtype` — Introspection for the kinds of commands.
+ - `ledit` — Equivalent to `lreplace` but on a list in a variable.
+ - `lpop` — Remove an item from a list in a variable.
+ - `lremove` — Remove a sublist from a list in a variable.
+ - `lseq` — Generate a list of numbers in a sequence.
+ - `package files` — Describe the contents of a package.
+ - `string insert` — Insert a string as a substring of another string.
+ - `string is dict` — Test whether a string is a dictionary.
+ - `tcl::process` — Commands for working with subprocesses.
+ - `*::build-info` — Obtain information about the build of Tcl.
+ - `readFile`, `writeFile`, `foreachLine` — Simple procedures for basic working with files.
+ - `tcl::idna::*` — Commands for working with encoded DNS names.
+
+## New command options
+ - `chan configure ... -inputmode ...` — Support for raw terminal input and reading passwords.
+ - `clock scan ... -validate ...`
+ - `info loaded ... ?prefix?`
+ - `lsearch ... -stride ...` — Search a list by groups of items.
+ - `regsub ... -command ...` — Generate the replacement for a regular expression by calling a command.
+ - `socket ... -nodelay ... -keepalive ...`
+ - `vwait` controlled by several new options
+ - `expr` string comparators `lt`, `gt`, `le`, `ge`
+ - `expr` supports comments inside expressions
+
+## Numbers
+ - <code>0<i>NNN</i></code> format is no longer octal interpretation. Use <code>0o<i>NNN</i></code>.
+ - <code>0d<i>NNNN</i></code> format to compel decimal interpretation.
+ - <code>NN_NNN_NNN</code>, underscores in numbers for optional readability
+ - Functions: `isinf()`, `isnan()`, `isnormal()`, `issubnormal()`, `isunordered()`
+ - Command: `fpclassify`
+ - Function `int()` no longer truncates to word size
+
+## TclOO facilities
+ - private variables and methods
+ - class variables and methods
+ - abstract and singleton classes
+ - configurable properties
+ - `method -export`, `method -unexport`

vendor/tcl/compat/README

@@ -0,0 +1,6 @@
+This directory contains various header and code files that are
+used make Tcl compatible with various releases of UNIX and UNIX-like
+systems.  Typically, files from this directory are used to compile
+Tcl when a system doesn't contain the corresponding files or when
+they are known to be incorrect.  When the whole world becomes POSIX-
+compliant this directory should be unnecessary.

vendor/tcl/compat/dlfcn.h

@@ -0,0 +1,58 @@
+/*
+ * dlfcn.h --
+ *
+ *	This file provides a replacement for the header file "dlfcn.h"
+ *	on systems where dlfcn.h is missing.  It's primary use is for
+ *	AIX, where Tcl emulates the dl library.
+ *
+ *	This file is subject to the following copyright notice, which is
+ *	different from the notice used elsewhere in Tcl but rougly
+ *	equivalent in meaning.
+ *
+ *	Copyright (c) 1992,1993,1995,1996, Jens-Uwe Mager, Helios Software GmbH
+ *	Not derived from licensed software.
+ *
+ *	Permission is granted to freely use, copy, modify, and redistribute
+ *	this software, provided that the author is not construed to be liable
+ *	for any results of using the software, alterations are clearly marked
+ *	as such, and this notice is not modified.
+ */
+
+/*
+ * This is an unpublished work copyright (c) 1992 HELIOS Software GmbH
+ * 30159 Hannover, Germany
+ */
+
+#ifndef __dlfcn_h__
+#define __dlfcn_h__
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/*
+ * Mode flags for the dlopen routine.
+ */
+#define RTLD_LAZY	1	/* lazy function call binding */
+#define RTLD_NOW	2	/* immediate function call binding */
+#define RTLD_GLOBAL	0x100	/* allow symbols to be global */
+
+/*
+ * To be able to intialize, a library may provide a dl_info structure
+ * that contains functions to be called to initialize and terminate.
+ */
+struct dl_info {
+	void (*init) (void);
+	void (*fini) (void);
+};
+
+void *dlopen (const char *path, int mode);
+void *dlsym (void *handle, const char *symbol);
+char *dlerror (void);
+int dlclose (void *handle);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* __dlfcn_h__ */

vendor/tcl/compat/fake-rfc2553.c

@@ -0,0 +1,267 @@
+/*
+ * Copyright (C) 2000-2003 Damien Miller.  All rights reserved.
+ * Copyright (C) 1999 WIDE Project.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. Neither the name of the project nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+/*
+ * Pseudo-implementation of RFC2553 name / address resolution functions
+ *
+ * But these functions are not implemented correctly. The minimum subset
+ * is implemented for ssh use only. For example, this routine assumes
+ * that ai_family is AF_INET. Don't use it for another purpose.
+ */
+#include "tclInt.h"
+
+TCL_DECLARE_MUTEX(netdbMutex)
+
+#ifndef HAVE_GETNAMEINFO
+#ifndef HAVE_STRLCPY
+static size_t
+strlcpy(char *dst, const char *src, size_t siz)
+{
+	char *d = dst;
+	const char *s = src;
+	size_t n = siz;
+
+	/* Copy as many bytes as will fit */
+	if (n != 0 && --n != 0) {
+		do {
+			if ((*d++ = *s++) == 0)
+				break;
+		} while (--n != 0);
+	}
+
+	/* Not enough room in dst, add NUL and traverse rest of src */
+	if (n == 0) {
+		if (siz != 0)
+			*d = '\0';	      /* NUL-terminate dst */
+		while (*s++)
+			;
+	}
+
+	return(s - src - 1);    /* count does not include NUL */
+}
+#endif
+
+int fake_getnameinfo(const struct sockaddr *sa, size_t salen, char *host,
+	size_t hostlen, char *serv, size_t servlen, int flags)
+{
+	struct sockaddr_in *sin = (struct sockaddr_in *)sa;
+	struct hostent *hp;
+	char tmpserv[16];
+	(void)salen;
+
+	if (sa->sa_family != AF_UNSPEC && sa->sa_family != AF_INET)
+		return (EAI_FAMILY);
+	if (serv != NULL) {
+		snprintf(tmpserv, sizeof(tmpserv), "%d", ntohs(sin->sin_port));
+		if (strlcpy(serv, tmpserv, servlen) >= servlen)
+			return (EAI_MEMORY);
+	}
+
+	if (host != NULL) {
+		if (flags & NI_NUMERICHOST) {
+			size_t len;
+			Tcl_MutexLock(&netdbMutex);
+			len = strlcpy(host, inet_ntoa(sin->sin_addr), hostlen);
+			Tcl_MutexUnlock(&netdbMutex);
+			if (len >= hostlen) {
+				return (EAI_MEMORY);
+			} else {
+				return (0);
+			}
+		} else {
+			int ret;
+			Tcl_MutexLock(&netdbMutex);
+			hp = gethostbyaddr((char *)&sin->sin_addr,
+			    sizeof(struct in_addr), AF_INET);
+			if (hp == NULL) {
+				ret = EAI_NODATA;
+			} else if (strlcpy(host, hp->h_name, hostlen)
+				   >= hostlen) {
+				ret = EAI_MEMORY;
+			} else {
+				ret = 0;
+			}
+			Tcl_MutexUnlock(&netdbMutex);
+			return ret;
+		}
+	}
+	return (0);
+}
+#endif /* !HAVE_GETNAMEINFO */
+
+#ifndef HAVE_GAI_STRERROR
+const char *
+fake_gai_strerror(int err)
+{
+	switch (err) {
+	case EAI_NODATA:
+		return ("no address associated with name");
+	case EAI_MEMORY:
+		return ("memory allocation failure.");
+	case EAI_NONAME:
+		return ("nodename nor servname provided, or not known");
+	case EAI_FAMILY:
+		return ("ai_family not supported");
+	default:
+		return ("unknown/invalid error.");
+	}
+}
+#endif /* !HAVE_GAI_STRERROR */
+
+#ifndef HAVE_FREEADDRINFO
+void
+fake_freeaddrinfo(struct addrinfo *ai)
+{
+	struct addrinfo *next;
+
+	for(; ai != NULL;) {
+		next = ai->ai_next;
+		free(ai);
+		ai = next;
+	}
+}
+#endif /* !HAVE_FREEADDRINFO */
+
+#ifndef HAVE_GETADDRINFO
+static struct
+addrinfo *malloc_ai(int port, u_long addr, const struct addrinfo *hints)
+{
+	struct addrinfo *ai;
+
+	ai = (struct addrinfo *)malloc(sizeof(*ai) + sizeof(struct sockaddr_in));
+	if (ai == NULL)
+		return (NULL);
+
+	memset(ai, '\0', sizeof(*ai) + sizeof(struct sockaddr_in));
+
+	ai->ai_addr = (struct sockaddr *)(ai + 1);
+	/* XXX -- ssh doesn't use sa_len */
+	ai->ai_addrlen = sizeof(struct sockaddr_in);
+	ai->ai_addr->sa_family = ai->ai_family = AF_INET;
+
+	((struct sockaddr_in *)(ai)->ai_addr)->sin_port = port;
+	((struct sockaddr_in *)(ai)->ai_addr)->sin_addr.s_addr = addr;
+
+	/* XXX: the following is not generally correct, but does what we want */
+	if (hints->ai_socktype)
+		ai->ai_socktype = hints->ai_socktype;
+	else
+		ai->ai_socktype = SOCK_STREAM;
+
+	if (hints->ai_protocol)
+		ai->ai_protocol = hints->ai_protocol;
+
+	return (ai);
+}
+
+int
+fake_getaddrinfo(const char *hostname, const char *servname,
+    const struct addrinfo *hints, struct addrinfo **res)
+{
+	struct hostent *hp;
+	struct servent *sp;
+	struct in_addr in;
+	int i;
+	long int port;
+	u_long addr;
+
+	port = 0;
+	if (hints && hints->ai_family != AF_UNSPEC &&
+	    hints->ai_family != AF_INET)
+		return (EAI_FAMILY);
+	if (servname != NULL) {
+		char *cp;
+
+		port = strtol(servname, &cp, 10);
+		if (port > 0 && port <= 65535 && *cp == '\0')
+			port = htons((unsigned short)port);
+		else if ((sp = getservbyname(servname, NULL)) != NULL)
+			port = sp->s_port;
+		else
+			port = 0;
+	}
+
+	if (hints && hints->ai_flags & AI_PASSIVE) {
+		addr = htonl(0x00000000);
+		if (hostname && inet_aton(hostname, &in) != 0)
+			addr = in.s_addr;
+		*res = malloc_ai(port, addr, hints);
+		if (*res == NULL)
+			return (EAI_MEMORY);
+		return (0);
+	}
+
+	if (!hostname) {
+		*res = malloc_ai(port, htonl(0x7F000001), hints);
+		if (*res == NULL)
+			return (EAI_MEMORY);
+		return (0);
+	}
+
+	if (inet_aton(hostname, &in)) {
+		*res = malloc_ai(port, in.s_addr, hints);
+		if (*res == NULL)
+			return (EAI_MEMORY);
+		return (0);
+	}
+
+	/* Don't try DNS if AI_NUMERICHOST is set */
+	if (hints && hints->ai_flags & AI_NUMERICHOST)
+		return (EAI_NONAME);
+
+	Tcl_MutexLock(&netdbMutex);
+	hp = gethostbyname(hostname);
+	if (hp && hp->h_name && hp->h_name[0] && hp->h_addr_list[0]) {
+		struct addrinfo *cur, *prev;
+
+		cur = prev = *res = NULL;
+		for (i = 0; hp->h_addr_list[i]; i++) {
+			struct in_addr *in = (struct in_addr *)hp->h_addr_list[i];
+
+			cur = malloc_ai(port, in->s_addr, hints);
+			if (cur == NULL) {
+				if (*res != NULL)
+					freeaddrinfo(*res);
+				Tcl_MutexUnlock(&netdbMutex);
+				return (EAI_MEMORY);
+			}
+			if (prev)
+				prev->ai_next = cur;
+			else
+				*res = cur;
+
+			prev = cur;
+		}
+		Tcl_MutexUnlock(&netdbMutex);
+		return (0);
+	}
+	Tcl_MutexUnlock(&netdbMutex);
+	return (EAI_NODATA);
+}
+#endif /* !HAVE_GETADDRINFO */

vendor/tcl/compat/fake-rfc2553.h

@@ -0,0 +1,170 @@
+/*
+ * Copyright (C) 2000-2003 Damien Miller.  All rights reserved.
+ * Copyright (C) 1999 WIDE Project.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. Neither the name of the project nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+/*
+ * Pseudo-implementation of RFC2553 name / address resolution functions
+ *
+ * But these functions are not implemented correctly. The minimum subset
+ * is implemented for ssh use only. For example, this routine assumes
+ * that ai_family is AF_INET. Don't use it for another purpose.
+ */
+
+#ifndef _FAKE_RFC2553_H
+#define _FAKE_RFC2553_H
+
+/*
+ * First, socket and INET6 related definitions
+ */
+#ifndef HAVE_STRUCT_SOCKADDR_STORAGE
+# define	_SS_MAXSIZE	128	/* Implementation specific max size */
+# define       _SS_PADSIZE     (_SS_MAXSIZE - sizeof (struct sockaddr))
+struct sockaddr_storage {
+	struct sockaddr	ss_sa;
+	char		__ss_pad2[_SS_PADSIZE];
+};
+# define ss_family ss_sa.sa_family
+#endif /* !HAVE_STRUCT_SOCKADDR_STORAGE */
+
+#ifndef IN6_IS_ADDR_LOOPBACK
+# define IN6_IS_ADDR_LOOPBACK(a) \
+	(((uint32_t *)(a))[0] == 0 && ((uint32_t *)(a))[1] == 0 && \
+	 ((uint32_t *)(a))[2] == 0 && ((uint32_t *)(a))[3] == htonl(1))
+#endif /* !IN6_IS_ADDR_LOOPBACK */
+
+#ifndef HAVE_STRUCT_IN6_ADDR
+struct in6_addr {
+	uint8_t	s6_addr[16];
+};
+#endif /* !HAVE_STRUCT_IN6_ADDR */
+
+#ifndef HAVE_STRUCT_SOCKADDR_IN6
+struct sockaddr_in6 {
+	unsigned short	sin6_family;
+	uint16_t	sin6_port;
+	uint32_t	sin6_flowinfo;
+	struct in6_addr	sin6_addr;
+	uint32_t	sin6_scope_id;
+};
+#endif /* !HAVE_STRUCT_SOCKADDR_IN6 */
+
+#ifndef AF_INET6
+/* Define it to something that should never appear */
+#define AF_INET6 AF_MAX
+#endif
+
+/*
+ * Next, RFC2553 name / address resolution API
+ */
+
+#ifndef NI_NUMERICHOST
+# define NI_NUMERICHOST    (1)
+#endif
+#ifndef NI_NAMEREQD
+# define NI_NAMEREQD       (1<<1)
+#endif
+#ifndef NI_NUMERICSERV
+# define NI_NUMERICSERV    (1<<2)
+#endif
+
+#ifndef AI_PASSIVE
+# define AI_PASSIVE		(1)
+#endif
+#ifndef AI_CANONNAME
+# define AI_CANONNAME		(1<<1)
+#endif
+#ifndef AI_NUMERICHOST
+# define AI_NUMERICHOST		(1<<2)
+#endif
+
+#ifndef NI_MAXSERV
+# define NI_MAXSERV 32
+#endif /* !NI_MAXSERV */
+#ifndef NI_MAXHOST
+# define NI_MAXHOST 1025
+#endif /* !NI_MAXHOST */
+
+#ifndef EAI_NODATA
+# define EAI_NODATA	(INT_MAX - 1)
+#endif
+#ifndef EAI_MEMORY
+# define EAI_MEMORY	(INT_MAX - 2)
+#endif
+#ifndef EAI_NONAME
+# define EAI_NONAME	(INT_MAX - 3)
+#endif
+#ifndef EAI_SYSTEM
+# define EAI_SYSTEM	(INT_MAX - 4)
+#endif
+#ifndef EAI_FAMILY
+# define EAI_FAMILY	(INT_MAX - 5)
+#endif
+#ifndef EAI_SERVICE
+# define EAI_SERVICE      -8    /* SERVICE not supported for `ai_socktype'.  */
+#endif
+
+#ifndef HAVE_STRUCT_ADDRINFO
+struct addrinfo {
+	int	ai_flags;	/* AI_PASSIVE, AI_CANONNAME */
+	int	ai_family;	/* PF_xxx */
+	int	ai_socktype;	/* SOCK_xxx */
+	int	ai_protocol;	/* 0 or IPPROTO_xxx for IPv4 and IPv6 */
+	size_t	ai_addrlen;	/* length of ai_addr */
+	char	*ai_canonname;	/* canonical name for hostname */
+	struct sockaddr *ai_addr;	/* binary address */
+	struct addrinfo *ai_next;	/* next structure in linked list */
+};
+#endif /* !HAVE_STRUCT_ADDRINFO */
+
+#ifndef HAVE_GETADDRINFO
+#ifdef getaddrinfo
+# undef getaddrinfo
+#endif
+#define getaddrinfo(a,b,c,d)    (fake_getaddrinfo(a,b,c,d))
+int getaddrinfo(const char *, const char *,
+    const struct addrinfo *, struct addrinfo **);
+#endif /* !HAVE_GETADDRINFO */
+
+#ifndef HAVE_GAI_STRERROR
+#define gai_strerror(a)         (fake_gai_strerror(a))
+const char *gai_strerror(int);
+#endif /* !HAVE_GAI_STRERROR */
+
+#ifndef HAVE_FREEADDRINFO
+#define freeaddrinfo(a)         (fake_freeaddrinfo(a))
+void freeaddrinfo(struct addrinfo *);
+#endif /* !HAVE_FREEADDRINFO */
+
+#ifndef HAVE_GETNAMEINFO
+#define getnameinfo(a,b,c,d,e,f,g) (fake_getnameinfo(a,b,c,d,e,f,g))
+int getnameinfo(const struct sockaddr *, size_t, char *, size_t,
+    char *, size_t, int);
+#endif /* !HAVE_GETNAMEINFO */
+
+
+#endif /* !_FAKE_RFC2553_H */

vendor/tcl/compat/gettod.c

@@ -0,0 +1,31 @@
+/*
+ * gettod.c --
+ *
+ *	This file provides the gettimeofday function on systems
+ *	that only have the System V ftime function.
+ *
+ * Copyright (c) 1995 Sun Microsystems, Inc.
+ *
+ * See the file "license.terms" for information on usage and redistribution
+ * of this file, and for a DISCLAIMER OF ALL WARRANTIES.
+ */
+
+#include "tclPort.h"
+#include <sys/timeb.h>
+
+#undef timezone
+
+int
+gettimeofday(
+    struct timeval *tp,
+    struct timezone *tz)
+{
+    struct timeb t;
+    (void)tz;
+
+    ftime(&t);
+    tp->tv_sec = t.time;
+    tp->tv_usec = t.millitm * 1000;
+    return 0;
+}
+

vendor/tcl/compat/license.terms

@@ -0,0 +1,40 @@
+This software is copyrighted by the Regents of the University of
+California, Sun Microsystems, Inc., Scriptics Corporation, ActiveState
+Corporation and other parties.  The following terms apply to all files
+associated with the software unless explicitly disclaimed in
+individual files.
+
+The authors hereby grant permission to use, copy, modify, distribute,
+and license this software and its documentation for any purpose, provided
+that existing copyright notices are retained in all copies and that this
+notice is included verbatim in any distributions. No written agreement,
+license, or royalty fee is required for any of the authorized uses.
+Modifications to this software may be copyrighted by their authors
+and need not follow the licensing terms described here, provided that
+the new terms are clearly indicated on the first page of each file where
+they apply.
+
+IN NO EVENT SHALL THE AUTHORS OR DISTRIBUTORS BE LIABLE TO ANY PARTY
+FOR DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES
+ARISING OUT OF THE USE OF THIS SOFTWARE, ITS DOCUMENTATION, OR ANY
+DERIVATIVES THEREOF, EVEN IF THE AUTHORS HAVE BEEN ADVISED OF THE
+POSSIBILITY OF SUCH DAMAGE.
+
+THE AUTHORS AND DISTRIBUTORS SPECIFICALLY DISCLAIM ANY WARRANTIES,
+INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE, AND NON-INFRINGEMENT.  THIS SOFTWARE
+IS PROVIDED ON AN "AS IS" BASIS, AND THE AUTHORS AND DISTRIBUTORS HAVE
+NO OBLIGATION TO PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR
+MODIFICATIONS.
+
+GOVERNMENT USE: If you are acquiring this software on behalf of the
+U.S. government, the Government shall have only "Restricted Rights"
+in the software and related documentation as defined in the Federal
+Acquisition Regulations (FARs) in Clause 52.227.19 (c) (2).  If you
+are acquiring the software on behalf of the Department of Defense, the
+software shall be classified as "Commercial Computer Software" and the
+Government shall have only "Restricted Rights" as defined in Clause
+252.227-7014 (b) (3) of DFARs.  Notwithstanding the foregoing, the
+authors grant the U.S. Government and others acting in its behalf
+permission to use and distribute the software in accordance with the
+terms specified in this license.

vendor/tcl/compat/mkstemp.c

@@ -0,0 +1,79 @@
+/*
+ * mkstemp.c --
+ *
+ *	Source code for the "mkstemp" library routine.
+ *
+ * Copyright (c) 2009 Donal K. Fellows
+ *
+ * See the file "license.terms" for information on usage and redistribution of
+ * this file, and for a DISCLAIMER OF ALL WARRANTIES.
+ */
+
+#include <errno.h>
+#include <fcntl.h>
+#include <stdlib.h>
+#include <unistd.h>
+#include <string.h>
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * mkstemp --
+ *
+ *	Create an open temporary file from a template.
+ *
+ * Results:
+ *	A file descriptor, or -1 (with errno set) in the case of an error.
+ *
+ * Side effects:
+ *	The template is updated to contain the real filename.
+ *
+ *----------------------------------------------------------------------
+ */
+
+int
+mkstemp(
+    char *tmpl)		/* Template for filename. */
+{
+    static const char alphanumerics[] =
+	"abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789";
+    char *a, *b;
+    int fd, count, alphanumericsLen = strlen(alphanumerics); /* == 62 */
+
+    a = tmpl + strlen(tmpl);
+    while (a > tmpl && *(a-1) == 'X') {
+	a--;
+    }
+
+    if (a == tmpl) {
+	errno = ENOENT;
+	return -1;
+    }
+
+    /*
+     * We'll only try up to 10 times; after that, we're suffering from enemy
+     * action and should let the caller know.
+     */
+
+    count = 10;
+    do {
+	/*
+	 * Replace the X's in the original template with random alphanumeric
+	 * digits.
+	 */
+
+	for (b=a ; *b ; b++) {
+	    float r = rand() / ((float) RAND_MAX);
+
+	    *b = alphanumerics[(int)(r * alphanumericsLen)];
+	}
+
+	/*
+	 * Template is now realized; try to open (with correct options).
+	 */
+
+	fd = open(tmpl, O_RDWR|O_CREAT|O_EXCL, 0600);
+    } while (fd == -1 && errno == EEXIST && --count > 0);
+
+    return fd;
+}

vendor/tcl/compat/strncasecmp.c

@@ -0,0 +1,136 @@
+/*
+ * strncasecmp.c --
+ *
+ *	Source code for the "strncasecmp" library routine.
+ *
+ * Copyright (c) 1988-1993 The Regents of the University of California.
+ * Copyright (c) 1995-1996 Sun Microsystems, Inc.
+ *
+ * See the file "license.terms" for information on usage and redistribution of
+ * this file, and for a DISCLAIMER OF ALL WARRANTIES.
+ */
+
+#include "tclPort.h"
+
+/*
+ * This array is designed for mapping upper and lower case letter together for
+ * a case independent comparison. The mappings are based upon ASCII character
+ * sequences.
+ */
+
+static const unsigned char charmap[] = {
+    0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07,
+    0x08, 0x09, 0x0a, 0x0b, 0x0c, 0x0d, 0x0e, 0x0f,
+    0x10, 0x11, 0x12, 0x13, 0x14, 0x15, 0x16, 0x17,
+    0x18, 0x19, 0x1a, 0x1b, 0x1c, 0x1d, 0x1e, 0x1f,
+    0x20, 0x21, 0x22, 0x23, 0x24, 0x25, 0x26, 0x27,
+    0x28, 0x29, 0x2a, 0x2b, 0x2c, 0x2d, 0x2e, 0x2f,
+    0x30, 0x31, 0x32, 0x33, 0x34, 0x35, 0x36, 0x37,
+    0x38, 0x39, 0x3a, 0x3b, 0x3c, 0x3d, 0x3e, 0x3f,
+    0x40, 0x61, 0x62, 0x63, 0x64, 0x65, 0x66, 0x67,
+    0x68, 0x69, 0x6a, 0x6b, 0x6c, 0x6d, 0x6e, 0x6f,
+    0x70, 0x71, 0x72, 0x73, 0x74, 0x75, 0x76, 0x77,
+    0x78, 0x79, 0x7a, 0x5b, 0x5c, 0x5d, 0x5e, 0x5f,
+    0x60, 0x61, 0x62, 0x63, 0x64, 0x65, 0x66, 0x67,
+    0x68, 0x69, 0x6a, 0x6b, 0x6c, 0x6d, 0x6e, 0x6f,
+    0x70, 0x71, 0x72, 0x73, 0x74, 0x75, 0x76, 0x77,
+    0x78, 0x79, 0x7a, 0x7b, 0x7c, 0x7d, 0x7e, 0x7f,
+    0x80, 0x81, 0x82, 0x83, 0x84, 0x85, 0x86, 0x87,
+    0x88, 0x89, 0x8a, 0x8b, 0x8c, 0x8d, 0x8e, 0x8f,
+    0x90, 0x91, 0x92, 0x93, 0x94, 0x95, 0x96, 0x97,
+    0x98, 0x99, 0x9a, 0x9b, 0x9c, 0x9d, 0x9e, 0x9f,
+    0xa0, 0xa1, 0xa2, 0xa3, 0xa4, 0xa5, 0xa6, 0xa7,
+    0xa8, 0xa9, 0xaa, 0xab, 0xac, 0xad, 0xae, 0xaf,
+    0xb0, 0xb1, 0xb2, 0xb3, 0xb4, 0xb5, 0xb6, 0xb7,
+    0xb8, 0xb9, 0xba, 0xbb, 0xbc, 0xbd, 0xbe, 0xbf,
+    0xc0, 0xe1, 0xe2, 0xe3, 0xe4, 0xc5, 0xe6, 0xe7,
+    0xe8, 0xe9, 0xea, 0xeb, 0xec, 0xed, 0xee, 0xef,
+    0xf0, 0xf1, 0xf2, 0xf3, 0xf4, 0xf5, 0xf6, 0xf7,
+    0xf8, 0xf9, 0xfa, 0xdb, 0xdc, 0xdd, 0xde, 0xdf,
+    0xe0, 0xe1, 0xe2, 0xe3, 0xe4, 0xe5, 0xe6, 0xe7,
+    0xe8, 0xe9, 0xea, 0xeb, 0xec, 0xed, 0xee, 0xef,
+    0xf0, 0xf1, 0xf2, 0xf3, 0xf4, 0xf5, 0xf6, 0xf7,
+    0xf8, 0xf9, 0xfa, 0xfb, 0xfc, 0xfd, 0xfe, 0xff,
+};
+
+/*
+ * Here are the prototypes just in case they are not included in tclPort.h.
+ */
+
+int		strncasecmp(const char *s1, const char *s2, size_t n);
+int		strcasecmp(const char *s1, const char *s2);
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * strcasecmp --
+ *
+ *	Compares two strings, ignoring case differences.
+ *
+ * Results:
+ *	Compares two null-terminated strings s1 and s2, returning -1, 0, or 1
+ *	if s1 is lexicographically less than, equal to, or greater than s2.
+ *
+ * Side effects:
+ *	None.
+ *
+ *----------------------------------------------------------------------
+ */
+
+int
+strcasecmp(
+    const char *s1,		/* First string. */
+    const char *s2)		/* Second string. */
+{
+    unsigned char u1, u2;
+
+    for ( ; ; s1++, s2++) {
+	u1 = (unsigned char) *s1;
+	u2 = (unsigned char) *s2;
+	if ((u1 == '\0') || (charmap[u1] != charmap[u2])) {
+	    break;
+	}
+    }
+    return charmap[u1] - charmap[u2];
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * strncasecmp --
+ *
+ *	Compares two strings, ignoring case differences.
+ *
+ * Results:
+ *	Compares up to length chars of s1 and s2, returning -1, 0, or 1 if s1
+ *	is lexicographically less than, equal to, or greater than s2 over
+ *	those characters.
+ *
+ * Side effects:
+ *	None.
+ *
+ *----------------------------------------------------------------------
+ */
+
+int
+strncasecmp(
+    const char *s1,		/* First string. */
+    const char *s2,		/* Second string. */
+    size_t length)		/* Maximum number of characters to compare
+				 * (stop earlier if the end of either string
+				 * is reached). */
+{
+    unsigned char u1, u2;
+
+    for (; length != 0; length--, s1++, s2++) {
+	u1 = (unsigned char) *s1;
+	u2 = (unsigned char) *s2;
+	if (charmap[u1] != charmap[u2]) {
+	    return charmap[u1] - charmap[u2];
+	}
+	if (u1 == '\0') {
+	    return 0;
+	}
+    }
+    return 0;
+}

vendor/tcl/compat/waitpid.c

@@ -0,0 +1,172 @@
+/*
+ * waitpid.c --
+ *
+ *	This procedure emulates the POSIX waitpid kernel call on BSD systems
+ *	that don't have waitpid but do have wait3. This code is based on a
+ *	prototype version written by Mark Diekhans and Karl Lehenbauer.
+ *
+ * Copyright (c) 1993 The Regents of the University of California.
+ * Copyright (c) 1994 Sun Microsystems, Inc.
+ *
+ * See the file "license.terms" for information on usage and redistribution of
+ * this file, and for a DISCLAIMER OF ALL WARRANTIES.
+ */
+
+#include "tclPort.h"
+
+#ifndef pid_t
+#define pid_t int
+#endif
+
+/*
+ * A linked list of the following structures is used to keep track of
+ * processes for which we received notification from the kernel, but the
+ * application hasn't waited for them yet (this can happen because wait may
+ * not return the process we really want). We save the information here until
+ * the application finally does wait for the process.
+ */
+
+typedef struct WaitInfo {
+    pid_t pid;			/* Pid of process that exited. */
+    WAIT_STATUS_TYPE status;	/* Status returned when child exited or
+				 * suspended. */
+    struct WaitInfo *nextPtr;	/* Next in list of exited processes. */
+} WaitInfo;
+
+static WaitInfo *deadList = NULL;
+				/* First in list of all dead processes. */
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * waitpid --
+ *
+ *	This procedure emulates the functionality of the POSIX waitpid kernel
+ *	call, using the BSD wait3 kernel call. Note: it doesn't emulate
+ *	absolutely all of the waitpid functionality, in that it doesn't
+ *	support pid's of 0 or < -1.
+ *
+ * Results:
+ *	-1 is returned if there is an error in the wait kernel call. Otherwise
+ *	the pid of an exited or suspended process is returned and *statusPtr
+ *	is set to the status value of the process.
+ *
+ * Side effects:
+ *	None.
+ *
+ *----------------------------------------------------------------------
+ */
+
+#ifdef waitpid
+#   undef waitpid
+#endif
+
+pid_t
+waitpid(
+    pid_t pid,			/* The pid to wait on. Must be -1 or greater
+				 * than zero. */
+    int *statusPtr,		/* Where to store wait status for the
+				 * process. */
+    int options)		/* OR'ed combination of WNOHANG and
+				 * WUNTRACED. */
+{
+    WaitInfo *waitPtr, *prevPtr;
+    pid_t result;
+    WAIT_STATUS_TYPE status;
+
+    if ((pid < -1) || (pid == 0)) {
+	errno = EINVAL;
+	return -1;
+    }
+
+    /*
+     * See if there's a suitable process that has already stopped or exited.
+     * If so, remove it from the list of exited processes and return its
+     * information.
+     */
+
+    for (waitPtr = deadList, prevPtr = NULL; waitPtr != NULL;
+	    prevPtr = waitPtr, waitPtr = waitPtr->nextPtr) {
+	if ((pid != waitPtr->pid) && (pid != -1)) {
+	    continue;
+	}
+	if (!(options & WUNTRACED) && (WIFSTOPPED(waitPtr->status))) {
+	    continue;
+	}
+	result = waitPtr->pid;
+	*statusPtr = *((int *) &waitPtr->status);
+	if (prevPtr == NULL) {
+	    deadList = waitPtr->nextPtr;
+	} else {
+	    prevPtr->nextPtr = waitPtr->nextPtr;
+	}
+	Tcl_Free(waitPtr);
+	return result;
+    }
+
+    /*
+     * Wait for any process to stop or exit. If it's an acceptable one then
+     * return it to the caller; otherwise store information about it in the
+     * list of exited processes and try again. On systems that have only wait
+     * but not wait3, there are several situations we can't handle, but we do
+     * the best we can (e.g. can still handle some combinations of options by
+     * invoking wait instead of wait3).
+     */
+
+    while (1) {
+#if NO_WAIT3
+	if (options & WNOHANG) {
+	    return 0;
+	}
+	if (options != 0) {
+	    errno = EINVAL;
+	    return -1;
+	}
+	result = wait(&status);
+#else
+	result = wait3(&status, options, 0);
+#endif
+	if ((result == -1) && (errno == EINTR)) {
+	    continue;
+	}
+	if (result <= 0) {
+	    return result;
+	}
+
+	if ((pid != result) && (pid != -1)) {
+	    goto saveInfo;
+	}
+	if (!(options & WUNTRACED) && (WIFSTOPPED(status))) {
+	    goto saveInfo;
+	}
+	*statusPtr = *((int *) &status);
+	return result;
+
+	/*
+	 * Can't return this info to caller. Save it in the list of stopped or
+	 * exited processes. Tricky point: first check for an existing entry
+	 * for the process and overwrite it if it exists (e.g. a previously
+	 * stopped process might now be dead).
+	 */
+
+    saveInfo:
+	for (waitPtr = deadList; waitPtr != NULL; waitPtr = waitPtr->nextPtr) {
+	    if (waitPtr->pid == result) {
+		waitPtr->status = status;
+		goto waitAgain;
+	    }
+	}
+	waitPtr = (WaitInfo *) Tcl_AttemptAlloc(sizeof(WaitInfo));
+	if (!waitPtr) {
+	    errno = ENOMEM;
+	    return -1;
+	}
+	waitPtr->pid = result;
+	waitPtr->status = status;
+	waitPtr->nextPtr = deadList;
+	deadList = waitPtr;
+
+    waitAgain:
+	continue;
+    }
+}

vendor/tcl/compat/zlib/BUILD.bazel

@@ -0,0 +1,134 @@
+# Copied from https://github.com/bazelbuild/bazel-central-registry/tree/main/modules/zlib/1.3.1.bcr.4/patches
+# Adapted from https://github.com/protocolbuffers/protobuf/blob/master/third_party/zlib.BUILD
+
+#  Copyright 2008 Google Inc.  All rights reserved.
+#
+#  Redistribution and use in source and binary forms, with or without
+#  modification, are permitted provided that the following conditions are
+#  met:
+#
+#      * Redistributions of source code must retain the above copyright
+#  notice, this list of conditions and the following disclaimer.
+#      * Redistributions in binary form must reproduce the above
+#  copyright notice, this list of conditions and the following disclaimer
+#  in the documentation and/or other materials provided with the
+#  distribution.
+#      * Neither the name of Google Inc. nor the names of its
+#  contributors may be used to endorse or promote products derived from
+#  this software without specific prior written permission.
+#
+#  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+#  "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+#  LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+#  A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+#  OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+#  SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+#  LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+#  DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+#  THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+#  (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+#  OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+#
+#  Code generated by the Protocol Buffer compiler is owned by the owner
+#  of the input file used when generating it.  This code is not
+#  standalone and requires a support library to be linked with it.  This
+#  support library is itself covered by the above license.
+
+load("@rules_cc//cc:defs.bzl", "cc_library")
+load("@rules_license//rules:license.bzl", "license")
+
+package(
+    default_applicable_licenses = [":license"],
+)
+
+license(
+    name = "license",
+    license_kinds = ["@rules_license//licenses/spdx:Zlib"],
+    license_text = "LICENSE",
+)
+
+exports_files([
+    "LICENSE",
+])
+
+_ZLIB_HEADERS = [
+    "crc32.h",
+    "deflate.h",
+    "gzguts.h",
+    "inffast.h",
+    "inffixed.h",
+    "inflate.h",
+    "inftrees.h",
+    "trees.h",
+    "zconf.h",
+    "zlib.h",
+    "zutil.h",
+]
+
+_ZLIB_PREFIXED_HEADERS = ["zlib/include/" + hdr for hdr in _ZLIB_HEADERS]
+
+# In order to limit the damage from the `includes` propagation
+# via `:zlib`, copy the public headers to a subdirectory and
+# expose those.
+genrule(
+    name = "copy_public_headers",
+    srcs = _ZLIB_HEADERS,
+    outs = _ZLIB_PREFIXED_HEADERS,
+    cmd_bash = "cp $(SRCS) $(@D)/zlib/include/",
+    cmd_bat = " && ".join(
+        ["@copy /Y \"$(location %s)\" \"$(@D)\\zlib\\include\\\"  >NUL" %
+         s for s in _ZLIB_HEADERS],
+    ),
+)
+
+config_setting(
+    name = "mingw_gcc_compiler",
+    flag_values = {
+        "@bazel_tools//tools/cpp:compiler": "mingw-gcc",
+    },
+    visibility = [":__subpackages__"],
+)
+
+cc_library(
+    name = "z",
+    srcs = [
+        "adler32.c",
+        "compress.c",
+        "crc32.c",
+        "deflate.c",
+        "gzclose.c",
+        "gzlib.c",
+        "gzread.c",
+        "gzwrite.c",
+        "infback.c",
+        "inffast.c",
+        "inflate.c",
+        "inftrees.c",
+        "trees.c",
+        "uncompr.c",
+        "zutil.c",
+        # Include the un-prefixed headers in srcs to work
+        # around the fact that zlib isn't consistent in its
+        # choice of <> or "" delimiter when including itself.
+    ] + _ZLIB_HEADERS,
+    hdrs = _ZLIB_PREFIXED_HEADERS,
+    copts = select({
+        ":mingw_gcc_compiler": [
+            "-fpermissive",
+        ],
+        "@platforms//os:windows": [],
+        "//conditions:default": [
+            "-Wno-deprecated-non-prototype",
+            "-Wno-unused-variable",
+            "-Wno-implicit-function-declaration",
+        ],
+    }),
+    includes = ["zlib/include/"],
+    visibility = ["//visibility:public"],
+)
+
+alias(
+    name = "zlib",
+    actual = ":z",
+    visibility = ["//visibility:public"],
+)

vendor/tcl/compat/zlib/CMakeLists.txt

@@ -0,0 +1,310 @@
+cmake_minimum_required(VERSION 3.12...3.31)
+
+project(
+    zlib
+    LANGUAGES C
+    VERSION 1.3.2
+    HOMEPAGE_URL "https://zlib.net/"
+    DESCRIPTION "a general-purpose lossless data-compression library")
+
+# ============================================================================
+# CPack
+# ============================================================================
+set(CPACK_PACKAGE_VENDOR "zlib-Project")
+set(CPACK_PACKAGE_DESCRIPTION_FILE ${zlib_SOURCE_DIR}/README)
+set(CPACK_RESOURCE_FILE_LICENSE ${zlib_SOURCE_DIR}/LICENSE)
+set(CPACK_RESOURCE_FILE_README ${zlib_SOURCE_DIR}/README)
+
+# ============================================================================
+# configuration
+# ============================================================================
+
+option(ZLIB_BUILD_TESTING "Enable Zlib Examples as tests" ON)
+option(ZLIB_BUILD_SHARED "Enable building zlib shared library" ON)
+option(ZLIB_BUILD_STATIC "Enable building zlib static library" ON)
+option(ZLIB_INSTALL "Enable installation of zlib" ON)
+option(ZLIB_PREFIX "prefix for all types and library functions, see zconf.h.in"
+       OFF)
+mark_as_advanced(ZLIB_PREFIX)
+
+get_property(IS_MULTI GLOBAL PROPERTY GENERATOR_IS_MULTI_CONFIG)
+
+if(NOT DEFINED CMAKE_BUILD_TYPE AND NOT IS_MULTI)
+    message(STATUS "No CMAKE_BUILD_TYPE set -- using Release")
+    set(CMAKE_BUILD_TYPE Release)
+endif(NOT DEFINED CMAKE_BUILD_TYPE AND NOT IS_MULTI)
+
+include(CheckCSourceCompiles)
+include(CheckFunctionExists)
+include(CheckIncludeFile)
+include(CMakePackageConfigHelpers)
+include(CheckTypeSize)
+include(CPack)
+include(GNUInstallDirs)
+
+set(CPACK_INCLUDED TRUE)
+
+if(NOT ZLIB_CONF_WRITTEN)
+    set(Z_PREFIX ${ZLIB_PREFIX})
+    set(CONF_OUT_FILE ${zlib_BINARY_DIR}/zconf.h.cmakein)
+    file(READ ${zlib_SOURCE_DIR}/zconf.h ZCONF_CONTENT LIMIT 245)
+    file(WRITE ${CONF_OUT_FILE} ${ZCONF_CONTENT})
+    file(APPEND ${CONF_OUT_FILE} "#cmakedefine Z_PREFIX 1\n")
+    file(APPEND ${CONF_OUT_FILE} "#cmakedefine HAVE_STDARG_H 1\n")
+    file(APPEND ${CONF_OUT_FILE} "#cmakedefine HAVE_UNISTD_H 1\n")
+    file(READ ${zlib_SOURCE_DIR}/zconf.h ZCONF_CONTENT OFFSET 244)
+    set(FIRST_ITEM TRUE)
+
+    foreach(item IN LISTS ZCONF_CONTENT)
+        if(FIRST_ITEM)
+            string(APPEND OUT_CONTENT ${item})
+            set(FIRST_ITEM FALSE)
+        else(FIRST_ITEM)
+            string(APPEND OUT_CONTENT "\;" ${item})
+        endif(FIRST_ITEM)
+    endforeach(item IN LISTS ${ZCONF_CONTENT})
+
+    file(APPEND ${CONF_OUT_FILE} ${OUT_CONTENT})
+    set(ZLIB_CONF_WRITTEN
+        TRUE
+        CACHE BOOL "zconf.h.cmakein was created")
+    mark_as_advanced(ZLIB_CONF_WRITTEN)
+endif(NOT ZLIB_CONF_WRITTEN)
+
+#
+# Check to see if we have large file support
+#
+set(CMAKE_REQUIRED_DEFINITIONS -D_LARGEFILE64_SOURCE=1)
+check_type_size(off64_t OFF64_T)
+unset(CMAKE_REQUIRED_DEFINITIONS) # clear variable
+
+#
+# Check for fseeko
+#
+check_function_exists(fseeko HAVE_FSEEKO)
+
+#
+# Check for stdarg.h
+#
+check_include_file(stdarg.h HAVE_STDARG_H)
+
+#
+# Check for unistd.h
+#
+check_include_file(unistd.h HAVE_UNISTD_H)
+
+#
+# Check visibility attribute is supported
+#
+if(MSVC)
+    set(CMAKE_REQUIRED_FLAGS "-WX")
+else(MSVC)
+    set(CMAKE_REQUIRED_FLAGS "-Werror")
+endif(MSVC)
+
+check_c_source_compiles(
+    "
+        #include <stdlib.h>
+        static void f(void) __attribute__ ((visibility(\"hidden\")));
+        int main(void) {return 0;}
+    "
+    HAVE___ATTR__VIS_HIDDEN)
+
+unset(CMAKE_COMPILE_FLAGS)
+set(ZLIB_PC ${zlib_BINARY_DIR}/zlib.pc)
+configure_file(${zlib_SOURCE_DIR}/zlib.pc.cmakein ${ZLIB_PC} @ONLY)
+configure_file(${zlib_BINARY_DIR}/zconf.h.cmakein ${zlib_BINARY_DIR}/zconf.h)
+
+# ============================================================================
+# zlib
+# ============================================================================
+
+set(ZLIB_PUBLIC_HDRS ${zlib_BINARY_DIR}/zconf.h zlib.h)
+
+set(ZLIB_PRIVATE_HDRS
+    crc32.h
+    deflate.h
+    gzguts.h
+    inffast.h
+    inffixed.h
+    inflate.h
+    inftrees.h
+    trees.h
+    zutil.h)
+
+set(ZLIB_SRCS
+    adler32.c
+    compress.c
+    crc32.c
+    deflate.c
+    gzclose.c
+    gzlib.c
+    gzread.c
+    gzwrite.c
+    inflate.c
+    infback.c
+    inftrees.c
+    inffast.c
+    trees.c
+    uncompr.c
+    zutil.c)
+
+if(WIN32)
+    set(zlib_static_suffix "s")
+    set(CMAKE_DEBUG_POSTFIX "d")
+endif(WIN32)
+
+if(ZLIB_BUILD_SHARED)
+    add_library(
+        zlib SHARED ${ZLIB_SRCS} ${ZLIB_PUBLIC_HDRS} ${ZLIB_PRIVATE_HDRS}
+                    $<$<OR:$<BOOL:${WIN32}>,$<BOOL:${CYGWIN}>>:win32/zlib1.rc>)
+    add_library(ZLIB::ZLIB ALIAS zlib)
+    target_include_directories(
+        zlib
+        PUBLIC $<BUILD_INTERFACE:${zlib_BINARY_DIR}>
+               $<BUILD_INTERFACE:${zlib_SOURCE_DIR}>
+               $<INSTALL_INTERFACE:${CMAKE_INSTALL_INCLUDEDIR}>)
+    target_compile_definitions(
+        zlib
+        PRIVATE ZLIB_BUILD
+                $<$<BOOL:NOT:${HAVE_FSEEKO}>:NO_FSEEKO>
+                $<$<BOOL:${HAVE___ATTR__VIS_HIDDEN}>:HAVE_HIDDEN>
+                $<$<BOOL:${MSVC}>:_CRT_SECURE_NO_DEPRECATE>
+                $<$<BOOL:${MSVC}>:_CRT_NONSTDC_NO_DEPRECATE>
+        PUBLIC $<$<BOOL:${HAVE_OFF64_T}>:_LARGEFILE64_SOURCE=1>)
+    set(INSTALL_VERSION ${zlib_VERSION})
+
+    if(NOT CYGWIN)
+        set_target_properties(zlib PROPERTIES SOVERSION ${zlib_VERSION_MAJOR}
+                                              VERSION ${INSTALL_VERSION})
+    endif(NOT CYGWIN)
+
+    set_target_properties(
+        zlib
+        PROPERTIES DEFINE_SYMBOL ZLIB_DLL
+                   EXPORT_NAME ZLIB
+                   OUTPUT_NAME z)
+    if(UNIX
+        AND NOT APPLE
+        AND NOT (CMAKE_SYSTEM_NAME STREQUAL AIX)
+        AND NOT (CMAKE_SYSTEM_NAME STREQUAL SunOS))
+        # On unix-like platforms the library is almost always called libz
+        set_target_properties(
+            zlib
+            PROPERTIES LINK_FLAGS
+                       "-Wl,--version-script,\"${zlib_SOURCE_DIR}/zlib.map\"")
+    endif(
+        UNIX
+        AND NOT APPLE
+        AND NOT (CMAKE_SYSTEM_NAME STREQUAL AIX)
+        AND NOT (CMAKE_SYSTEM_NAME STREQUAL SunOS))
+endif(ZLIB_BUILD_SHARED)
+
+if(ZLIB_BUILD_STATIC)
+    add_library(zlibstatic STATIC ${ZLIB_SRCS} ${ZLIB_PUBLIC_HDRS}
+                                  ${ZLIB_PRIVATE_HDRS})
+    add_library(ZLIB::ZLIBSTATIC ALIAS zlibstatic)
+    target_include_directories(
+        zlibstatic
+        PUBLIC $<BUILD_INTERFACE:${zlib_BINARY_DIR}>
+               $<BUILD_INTERFACE:${zlib_SOURCE_DIR}>
+               $<INSTALL_INTERFACE:${CMAKE_INSTALL_INCLUDEDIR}>)
+    target_compile_definitions(
+        zlibstatic
+        PRIVATE ZLIB_BUILD
+                $<$<BOOL:NOT:${HAVE_FSEEKO}>:NO_FSEEKO>
+                $<$<BOOL:${HAVE___ATTR__VIS_HIDDEN}>:HAVE_HIDDEN>
+                $<$<BOOL:${MSVC}>:_CRT_SECURE_NO_DEPRECATE>
+                $<$<BOOL:${MSVC}>:_CRT_NONSTDC_NO_DEPRECATE>
+        PUBLIC $<$<BOOL:${HAVE_OFF64_T}>:_LARGEFILE64_SOURCE=1>)
+    set_target_properties(
+        zlibstatic PROPERTIES EXPORT_NAME ZLIBSTATIC OUTPUT_NAME
+                                                     z${zlib_static_suffix})
+endif(ZLIB_BUILD_STATIC)
+
+if(ZLIB_INSTALL)
+    if(ZLIB_BUILD_SHARED)
+        install(
+            TARGETS zlib
+            COMPONENT Runtime
+            EXPORT zlibSharedExport
+            RUNTIME DESTINATION "${CMAKE_INSTALL_BINDIR}"
+            ARCHIVE DESTINATION "${CMAKE_INSTALL_LIBDIR}"
+            LIBRARY DESTINATION "${CMAKE_INSTALL_LIBDIR}")
+        install(
+            EXPORT zlibSharedExport
+            FILE ZLIB-shared.cmake
+            NAMESPACE ZLIB::
+            DESTINATION ${CMAKE_INSTALL_LIBDIR}/cmake/zlib)
+
+        if(MSVC)
+            install(
+                FILES $<TARGET_PDB_FILE:zlib>
+                COMPONENT Runtime
+                DESTINATION ${CMAKE_INSTALL_BINDIR}
+                CONFIGURATIONS Debug OR RelWithDebInfo
+                OPTIONAL)
+        endif(MSVC)
+    endif(ZLIB_BUILD_SHARED)
+
+    if(ZLIB_BUILD_STATIC)
+        install(
+            TARGETS zlibstatic
+            COMPONENT Development
+            EXPORT zlibStaticExport
+            RUNTIME DESTINATION "${CMAKE_INSTALL_BINDIR}"
+            ARCHIVE DESTINATION "${CMAKE_INSTALL_LIBDIR}"
+            LIBRARY DESTINATION "${CMAKE_INSTALL_LIBDIR}")
+        install(
+            EXPORT zlibStaticExport
+            FILE ZLIB-static.cmake
+            NAMESPACE ZLIB::
+            DESTINATION ${CMAKE_INSTALL_LIBDIR}/cmake/zlib)
+    endif(ZLIB_BUILD_STATIC)
+
+    configure_package_config_file(
+        ${zlib_SOURCE_DIR}/zlibConfig.cmake.in
+        ${zlib_BINARY_DIR}/ZLIBConfig.cmake
+        INSTALL_DESTINATION ${CMAKE_INSTALL_LIBDIR}/cmake/zlib)
+
+    write_basic_package_version_file(
+        "${zlib_BINARY_DIR}/ZLIBConfigVersion.cmake"
+        VERSION "${zlib_VERSION}"
+        COMPATIBILITY AnyNewerVersion)
+
+    install(FILES ${zlib_BINARY_DIR}/ZLIBConfig.cmake
+                  ${zlib_BINARY_DIR}/ZLIBConfigVersion.cmake
+            DESTINATION ${CMAKE_INSTALL_LIBDIR}/cmake/zlib)
+    install(
+        FILES ${ZLIB_PUBLIC_HDRS}
+        COMPONENT Development
+        DESTINATION "${CMAKE_INSTALL_INCLUDEDIR}")
+    install(
+        FILES zlib.3
+        COMPONENT Docs
+        DESTINATION "${CMAKE_INSTALL_MANDIR}/man3")
+    install(
+        FILES LICENSE
+              doc/algorithm.txt
+              doc/crc-doc.1.0.pdf
+              doc/rfc1950.txt
+              doc/rfc1951.txt
+              doc/rfc1952.txt
+              doc/txtvsbin.txt
+        COMPONENT Docs
+        DESTINATION "${CMAKE_INSTALL_DOCDIR}/zlib")
+    install(
+        FILES ${ZLIB_PC}
+        COMPONENT Development
+        DESTINATION "${CMAKE_INSTALL_LIBDIR}/pkgconfig")
+endif(ZLIB_INSTALL)
+
+# ============================================================================
+# Tests
+# ============================================================================
+if(ZLIB_BUILD_TESTING)
+    enable_testing()
+    add_subdirectory(test)
+endif(ZLIB_BUILD_TESTING)
+
+add_subdirectory(contrib)

vendor/tcl/compat/zlib/FAQ

@@ -0,0 +1,371 @@
+
+                Frequently Asked Questions about zlib
+
+
+If your question is not there, please check the zlib home page
+https://zlib.net/ which may have more recent information.
+The latest zlib FAQ is at https://zlib.net/zlib_faq.html
+
+
+ 1. Is zlib Y2K-compliant?
+
+    Yes. zlib doesn't handle dates.
+
+ 2. Where can I get a Windows DLL version?
+
+    The zlib sources can be compiled without change to produce a DLL.  See the
+    file win32/DLL_FAQ.txt in the zlib distribution.
+
+ 3. Where can I get a Visual Basic interface to zlib?
+
+    See
+        * https://zlib.net/nelson/
+        * win32/DLL_FAQ.txt in the zlib distribution
+
+ 4. compress() returns Z_BUF_ERROR.
+
+    Make sure that before the call of compress(), the length of the compressed
+    buffer is equal to the available size of the compressed buffer and not
+    zero.  For Visual Basic, check that this parameter is passed by reference
+    ("as any"), not by value ("as long").
+
+ 5. deflate() or inflate() returns Z_BUF_ERROR.
+
+    Before making the call, make sure that avail_in and avail_out are not zero.
+    When setting the parameter flush equal to Z_FINISH, also make sure that
+    avail_out is big enough to allow processing all pending input.  Note that a
+    Z_BUF_ERROR is not fatal--another call to deflate() or inflate() can be
+    made with more input or output space.  A Z_BUF_ERROR may in fact be
+    unavoidable depending on how the functions are used, since it is not
+    possible to tell whether or not there is more output pending when
+    strm.avail_out returns with zero.  See https://zlib.net/zlib_how.html for a
+    heavily annotated example.
+
+ 6. Where's the zlib documentation (man pages, etc.)?
+
+    It's in zlib.h .  Examples of zlib usage are in the files test/example.c
+    and test/minigzip.c, with more in examples/ .
+
+ 7. Why don't you use GNU autoconf or libtool or ...?
+
+    Because we would like to keep zlib as a very small and simple package.
+    zlib is rather portable and doesn't need much configuration.
+
+ 8. I found a bug in zlib.
+
+    Most of the time, such problems are due to an incorrect usage of zlib.
+    Please try to reproduce the problem with a small program and send the
+    corresponding source to us at zlib@gzip.org .  Do not send multi-megabyte
+    data files without prior agreement.
+
+ 9. Why do I get "undefined reference to gzputc"?
+
+    If "make test" produces something like
+
+       example.o(.text+0x154): undefined reference to `gzputc'
+
+    check that you don't have old files libz.* in /usr/lib, /usr/local/lib or
+    /usr/X11R6/lib. Remove any old versions, then do "make install".
+
+10. I need a Delphi interface to zlib.
+
+    See the contrib/delphi directory in the zlib distribution.
+
+11. Can zlib handle .zip archives?
+
+    Not by itself, no.  See the directory contrib/minizip in the zlib
+    distribution.
+
+12. Can zlib handle .Z files?
+
+    No, sorry.  You have to spawn an uncompress or gunzip subprocess, or adapt
+    the code of uncompress on your own.
+
+13. How can I make a Unix shared library?
+
+    By default a shared (and a static) library is built for Unix.  So:
+
+    make distclean
+    ./configure
+    make
+
+14. How do I install a shared zlib library on Unix?
+
+    After the above, then:
+
+    make install
+
+    However, many flavors of Unix come with a shared zlib already installed.
+    Before going to the trouble of compiling a shared version of zlib and
+    trying to install it, you may want to check if it's already there!  If you
+    can #include <zlib.h>, it's there.  The -lz option will probably link to
+    it.  You can check the version at the top of zlib.h or with the
+    ZLIB_VERSION symbol defined in zlib.h .
+
+15. I have a question about OttoPDF.
+
+    We are not the authors of OttoPDF. The real author is on the OttoPDF web
+    site: Joel Hainley, jhainley@myndkryme.com.
+
+16. Can zlib decode Flate data in an Adobe PDF file?
+
+    Yes. See https://www.pdflib.com/ . To modify PDF forms, see
+    https://sourceforge.net/projects/acroformtool/ .
+
+17. Why am I getting this "register_frame_info not found" error on Solaris?
+
+    After installing zlib 1.1.4 on Solaris 2.6, running applications using zlib
+    generates an error such as:
+
+        ld.so.1: rpm: fatal: relocation error: file /usr/local/lib/libz.so:
+        symbol __register_frame_info: referenced symbol not found
+
+    The symbol __register_frame_info is not part of zlib, it is generated by
+    the C compiler (cc or gcc).  You must recompile applications using zlib
+    which have this problem.  This problem is specific to Solaris.  See
+    http://www.sunfreeware.com for Solaris versions of zlib and applications
+    using zlib.
+
+18. Why does gzip give an error on a file I make with compress/deflate?
+
+    The compress and deflate functions produce data in the zlib format, which
+    is different and incompatible with the gzip format.  The gz* functions in
+    zlib on the other hand use the gzip format.  Both the zlib and gzip formats
+    use the same compressed data format internally, but have different headers
+    and trailers around the compressed data.
+
+19. Ok, so why are there two different formats?
+
+    The gzip format was designed to retain the directory information about a
+    single file, such as the name and last modification date.  The zlib format
+    on the other hand was designed for in-memory and communication channel
+    applications, and has a much more compact header and trailer and uses a
+    faster integrity check than gzip.
+
+20. Well that's nice, but how do I make a gzip file in memory?
+
+    You can request that deflate write the gzip format instead of the zlib
+    format using deflateInit2().  You can also request that inflate decode the
+    gzip format using inflateInit2().  Read zlib.h for more details.
+
+21. Is zlib thread-safe?
+
+    Yes.  However any library routines that zlib uses and any application-
+    provided memory allocation routines must also be thread-safe.  zlib's gz*
+    functions use stdio library routines, and most of zlib's functions use the
+    library memory allocation routines by default.  zlib's *Init* functions
+    allow for the application to provide custom memory allocation routines.
+
+    If the non-default BUILDFIXED or DYNAMIC_CRC_TABLE defines are used on a
+    system without atomics (e.g. pre-C11), then inflate() and crc32() will not
+    be thread safe.
+
+    Of course, you should only operate on any given zlib or gzip stream from a
+    single thread at a time.
+
+22. Can I use zlib in my commercial application?
+
+    Yes.  Please read the license in zlib.h.
+
+23. Is zlib under the GNU license?
+
+    No.  Please read the license in zlib.h.
+
+24. The license says that altered source versions must be "plainly marked". So
+    what exactly do I need to do to meet that requirement?
+
+    You need to change the ZLIB_VERSION and ZLIB_VERNUM #defines in zlib.h.  In
+    particular, the final version number needs to be changed to "f", and an
+    identification string should be appended to ZLIB_VERSION.  Version numbers
+    x.x.x.f are reserved for modifications to zlib by others than the zlib
+    maintainers.  For example, if the version of the base zlib you are altering
+    is "1.2.3.4", then in zlib.h you should change ZLIB_VERNUM to 0x123f, and
+    ZLIB_VERSION to something like "1.2.3.f-zachary-mods-v3".  You can also
+    update the version strings in deflate.c and inftrees.c.
+
+    For altered source distributions, you should also note the origin and
+    nature of the changes in zlib.h, as well as in ChangeLog and README, along
+    with the dates of the alterations.  The origin should include at least your
+    name (or your company's name), and an email address to contact for help or
+    issues with the library.
+
+    Note that distributing a compiled zlib library along with zlib.h and
+    zconf.h is also a source distribution, and so you should change
+    ZLIB_VERSION and ZLIB_VERNUM and note the origin and nature of the changes
+    in zlib.h as you would for a full source distribution.
+
+25. Will zlib work on a big-endian or little-endian architecture, and can I
+    exchange compressed data between them?
+
+    Yes and yes.
+
+26. Will zlib work on a 64-bit machine?
+
+    Yes.  It has been tested on 64-bit machines, and has no dependence on any
+    data types being limited to 32-bits in length.  If you have any
+    difficulties, please provide a complete problem report to zlib@gzip.org
+
+27. Will zlib decompress data from the PKWare Data Compression Library?
+
+    No.  The PKWare DCL uses a completely different compressed data format than
+    does PKZIP and zlib.  However, you can look in zlib's contrib/blast
+    directory for a possible solution to your problem.
+
+28. Can I access data randomly in a compressed stream?
+
+    No, not without some preparation.  If when compressing you periodically use
+    Z_FULL_FLUSH, carefully write all the pending data at those points, and
+    keep an index of those locations, then you can start decompression at those
+    points.  You have to be careful to not use Z_FULL_FLUSH too often, since it
+    can significantly degrade compression.  Alternatively, you can scan a
+    deflate stream once to generate an index, and then use that index for
+    random access.  See examples/zran.c .
+
+29. Does zlib work on MVS, OS/390, CICS, etc.?
+
+    It has in the past, but we have not heard of any recent evidence.  There
+    were working ports of zlib 1.1.4 to MVS, but those links no longer work.
+    If you know of recent, successful applications of zlib on these operating
+    systems, please let us know.  Thanks.
+
+30. Is there some simpler, easier to read version of inflate I can look at to
+    understand the deflate format?
+
+    First off, you should read RFC 1951.  Second, yes.  Look in zlib's
+    contrib/puff directory.
+
+31. Does zlib infringe on any patents?
+
+    As far as we know, no.  In fact, that was originally the whole point behind
+    zlib.  Look here for some more information:
+
+    https://web.archive.org/web/20180729212847/http://www.gzip.org/#faq11
+
+32. Can zlib work with greater than 4 GB of data?
+
+    Yes.  inflate() and deflate() will process any amount of data correctly.
+    Each call of inflate() or deflate() is limited to input and output chunks
+    of the maximum value that can be stored in the compiler's "unsigned int"
+    type, but there is no limit to the number of chunks.  Note however that the
+    strm.total_in and strm_total_out counters may be limited to 4 GB.  These
+    counters are provided as a convenience and are not used internally by
+    inflate() or deflate().  The application can easily set up its own counters
+    updated after each call of inflate() or deflate() to count beyond 4 GB.
+    compress() and uncompress() may be limited to 4 GB, since they operate in a
+    single call.  gzseek() and gztell() may be limited to 4 GB depending on how
+    zlib is compiled.  See the zlibCompileFlags() function in zlib.h.
+
+    The word "may" appears several times above since there is a 4 GB limit only
+    if the compiler's "long" type is 32 bits.  If the compiler's "long" type is
+    64 bits, then the limit is 16 exabytes.
+
+33. Does zlib have any security vulnerabilities?
+
+    The only one that we are aware of is potentially in gzprintf().  If zlib is
+    compiled to use sprintf() or vsprintf(), which requires that ZLIB_INSECURE
+    be defined, then there is no protection against a buffer overflow of an 8K
+    string space (or other value as set by gzbuffer()), other than the caller
+    of gzprintf() assuring that the output will not exceed 8K.  On the other
+    hand, if zlib is compiled to use snprintf() or vsnprintf(), which should
+    normally be the case, then there is no vulnerability.  The ./configure
+    script will display warnings if an insecure variation of sprintf() will be
+    used by gzprintf().  Also the zlibCompileFlags() function will return
+    information on what variant of sprintf() is used by gzprintf().
+
+    If you don't have snprintf() or vsnprintf() and would like one, you can
+    find a good portable implementation in stb_sprintf.h here:
+
+        https://github.com/nothings/stb
+
+    Note that you should be using the most recent version of zlib.  Versions
+    1.1.3 and before were subject to a double-free vulnerability, and versions
+    1.2.1 and 1.2.2 were subject to an access exception when decompressing
+    invalid compressed data.
+
+34. Is there a Java version of zlib?
+
+    Probably what you want is to use zlib in Java. zlib is already included
+    as part of the Java SDK in the java.util.zip package. If you really want
+    a version of zlib written in the Java language, look on the zlib home
+    page for links: https://zlib.net/ .
+
+35. I get this or that compiler or source-code scanner warning when I crank it
+    up to maximally-pedantic. Can't you guys write proper code?
+
+    Many years ago, we gave up attempting to avoid warnings on every compiler
+    in the universe.  It just got to be a waste of time, and some compilers
+    were downright silly as well as contradicted each other.  So now, we simply
+    make sure that the code always works.
+
+36. Valgrind (or some similar memory access checker) says that deflate is
+    performing a conditional jump that depends on an uninitialized value.
+    Isn't that a bug?
+
+    No.  That is intentional for performance reasons, and the output of deflate
+    is not affected.  This only started showing up recently since zlib 1.2.x
+    uses malloc() by default for allocations, whereas earlier versions used
+    calloc(), which zeros out the allocated memory.  Even though the code was
+    correct, versions 1.2.4 and later was changed to not stimulate these
+    checkers.
+
+37. Will zlib read the (insert any ancient or arcane format here) compressed
+    data format?
+
+    Probably not. Look in the comp.compression FAQ for pointers to various
+    formats and associated software.
+
+38. How can I encrypt/decrypt zip files with zlib?
+
+    zlib doesn't support encryption.  The original PKZIP encryption is very
+    weak and can be broken with freely available programs.  To get strong
+    encryption, use GnuPG, https://www.gnupg.org/ , which already includes zlib
+    compression.  For PKZIP compatible "encryption", look at
+    https://infozip.sourceforge.net/
+
+39. What's the difference between the "gzip" and "deflate" HTTP 1.1 encodings?
+
+    "gzip" is the gzip format, and "deflate" is the zlib format.  They should
+    probably have called the second one "zlib" instead to avoid confusion with
+    the raw deflate compressed data format.  While the HTTP 1.1 RFC 2616
+    correctly points to the zlib specification in RFC 1950 for the "deflate"
+    transfer encoding, there have been reports of servers and browsers that
+    incorrectly produce or expect raw deflate data per the deflate
+    specification in RFC 1951, most notably Microsoft.  So even though the
+    "deflate" transfer encoding using the zlib format would be the more
+    efficient approach (and in fact exactly what the zlib format was designed
+    for), using the "gzip" transfer encoding is probably more reliable due to
+    an unfortunate choice of name on the part of the HTTP 1.1 authors.
+
+    Bottom line: use the gzip format for HTTP 1.1 encoding.
+
+40. Does zlib support the new "Deflate64" format introduced by PKWare?
+
+    No.  PKWare has apparently decided to keep that format proprietary, since
+    they have not documented it as they have previous compression formats.  In
+    any case, the compression improvements are so modest compared to other more
+    modern approaches, that it's not worth the effort to implement.
+
+41. I'm having a problem with the zip functions in zlib, can you help?
+
+    There are no zip functions in zlib.  You are probably using minizip by
+    Giles Vollant, which is found in the contrib directory of zlib.  It is not
+    part of zlib.  In fact none of the stuff in contrib is part of zlib.  The
+    files in there are not supported by the zlib authors.  You need to contact
+    the authors of the respective contribution for help.
+
+42. The match.asm code in contrib is under the GNU General Public License.
+    Since it's part of zlib, doesn't that mean that all of zlib falls under the
+    GNU GPL?
+
+    No.  The files in contrib are not part of zlib.  They were contributed by
+    other authors and are provided as a convenience to the user within the zlib
+    distribution.  Each item in contrib has its own license.
+
+43. Is zlib subject to export controls?  What is its ECCN?
+
+    zlib is not subject to export controls, and so is classified as EAR99.
+
+44. Can you please sign these lengthy legal documents and fax them back to us
+    so that we can use your software in our product?
+
+    No. Go away. Shoo.

vendor/tcl/compat/zlib/INDEX

@@ -0,0 +1,67 @@
+CMakeLists.txt  cmake build file
+ChangeLog       history of changes
+FAQ             Frequently Asked Questions about zlib
+INDEX           this file
+Makefile        dummy Makefile that tells you to ./configure
+Makefile.in     template for Unix Makefile
+README          guess what
+configure       configure script for Unix
+make_vms.com    makefile for VMS
+test/example.c  zlib usages examples for build testing
+test/minigzip.c minimal gzip-like functionality for build testing
+test/infcover.c inf*.c code coverage for build coverage testing
+treebuild.xml   XML description of source file dependencies
+zconf.h.cmakein zconf.h template for cmake
+zconf.h.in      zconf.h template for configure
+zlib.3          Man page for zlib
+zlib.3.pdf      Man page in PDF format
+zlib.map        Linux symbol information
+zlib.pc.in      Template for pkg-config descriptor
+zlib.pc.cmakein zlib.pc template for cmake
+zlib2ansi       perl script to convert source files for C++ compilation
+
+amiga/          makefiles for Amiga SAS C
+doc/            documentation for formats and algorithms
+msdos/          makefiles for MSDOS
+old/            makefiles for various architectures and zlib documentation
+                files that have not yet been updated for zlib 1.2.x
+os400/          makefiles for OS/400
+qnx/            makefiles for QNX
+watcom/         makefiles for OpenWatcom
+win32/          makefiles for Windows
+
+                zlib public header files (required for library use):
+zconf.h
+zlib.h
+
+                private source files used to build the zlib library:
+adler32.c
+compress.c
+crc32.c
+crc32.h
+deflate.c
+deflate.h
+gzclose.c
+gzguts.h
+gzlib.c
+gzread.c
+gzwrite.c
+infback.c
+inffast.c
+inffast.h
+inffixed.h
+inflate.c
+inflate.h
+inftrees.c
+inftrees.h
+trees.c
+trees.h
+uncompr.c
+zutil.c
+zutil.h
+
+                source files for sample programs
+See examples/README.examples
+
+                unsupported contributions by third parties
+See contrib/README.contrib

vendor/tcl/compat/zlib/LICENSE

@@ -0,0 +1,22 @@
+Copyright notice:
+
+ (C) 1995-2026 Jean-loup Gailly and Mark Adler
+
+  This software is provided 'as-is', without any express or implied
+  warranty.  In no event will the authors be held liable for any damages
+  arising from the use of this software.
+
+  Permission is granted to anyone to use this software for any purpose,
+  including commercial applications, and to alter it and redistribute it
+  freely, subject to the following restrictions:
+
+  1. The origin of this software must not be misrepresented; you must not
+     claim that you wrote the original software. If you use this software
+     in a product, an acknowledgment in the product documentation would be
+     appreciated but is not required.
+  2. Altered source versions must be plainly marked as such, and must not be
+     misrepresented as being the original software.
+  3. This notice may not be removed or altered from any source distribution.
+
+  Jean-loup Gailly        Mark Adler
+  jloup@gzip.org          madler@alumni.caltech.edu

vendor/tcl/compat/zlib/MODULE.bazel

@@ -0,0 +1,9 @@
+module(
+    name = "zlib",
+    version = "0.0.0",
+    compatibility_level = 1,
+)
+
+bazel_dep(name = "platforms", version = "0.0.10")
+bazel_dep(name = "rules_cc", version = "0.0.16")
+bazel_dep(name = "rules_license", version = "1.0.0")

vendor/tcl/compat/zlib/Makefile

@@ -0,0 +1,5 @@
+all:
+	-@echo "Please use ./configure first.  Thank you."
+
+distclean:
+	make -f Makefile.in distclean

vendor/tcl/compat/zlib/Makefile.in

@@ -0,0 +1,426 @@
+# Makefile for zlib
+# Copyright (C) 1995-2026 Jean-loup Gailly, Mark Adler
+# For conditions of distribution and use, see copyright notice in zlib.h
+
+# To compile and test, type:
+#    ./configure; make test
+# Normally configure builds both a static and a shared library.
+# If you want to build just a static library, use: ./configure --static
+
+# To install /usr/local/lib/libz.* and /usr/local/include/zlib.h, type:
+#    make install
+# To install in $HOME instead of /usr/local, use:
+#    make install prefix=$HOME
+
+CC=cc
+GCOV=GCOV
+LLVM_GCOV_FLAG=LLMV_GCOV_FLAG
+
+CFLAGS=-O
+#CFLAGS=-O -DMAX_WBITS=14 -DMAX_MEM_LEVEL=7
+#CFLAGS=-g -DZLIB_DEBUG
+#CFLAGS=-O3 -Wall -Wwrite-strings -Wpointer-arith -Wconversion \
+#           -Wstrict-prototypes -Wmissing-prototypes
+
+SFLAGS=-O
+LDFLAGS=
+TEST_LIBS=-L. libz.a
+LDSHARED=$(CC)
+CPP=$(CC) -E
+VGFMAFLAG=
+
+STATICLIB=libz.a
+SHAREDLIB=libz.so
+SHAREDLIBV=libz.so.1.3.2
+SHAREDLIBM=libz.so.1
+LIBS=$(STATICLIB) $(SHAREDLIBV)
+
+AR=ar
+ARFLAGS=rc
+RANLIB=ranlib
+LDCONFIG=ldconfig
+LDSHAREDLIBC=-lc
+TAR=tar
+SHELL=/bin/sh
+EXE=
+
+prefix = /usr/local
+exec_prefix = ${prefix}
+libdir = ${exec_prefix}/lib
+sharedlibdir = ${libdir}
+includedir = ${prefix}/include
+mandir = ${prefix}/share/man
+man3dir = ${mandir}/man3
+pkgconfigdir = ${libdir}/pkgconfig
+SRCDIR=
+ZINC=
+ZINCOUT=-I.
+
+OBJZ = adler32.o crc32.o deflate.o infback.o inffast.o inflate.o inftrees.o trees.o zutil.o
+OBJG = compress.o uncompr.o gzclose.o gzlib.o gzread.o gzwrite.o
+OBJC = $(OBJZ) $(OBJG)
+
+PIC_OBJZ = adler32.lo crc32.lo deflate.lo infback.lo inffast.lo inflate.lo inftrees.lo trees.lo zutil.lo
+PIC_OBJG = compress.lo uncompr.lo gzclose.lo gzlib.lo gzread.lo gzwrite.lo
+PIC_OBJC = $(PIC_OBJZ) $(PIC_OBJG)
+
+# to use the asm code: make OBJA=match.o, PIC_OBJA=match.lo
+OBJA =
+PIC_OBJA =
+
+OBJS = $(OBJC) $(OBJA)
+
+PIC_OBJS = $(PIC_OBJC) $(PIC_OBJA)
+
+all: static shared
+
+static: example$(EXE) minigzip$(EXE)
+
+shared: examplesh$(EXE) minigzipsh$(EXE)
+
+all64: example64$(EXE) minigzip64$(EXE)
+
+check: test
+
+test: all teststatic testshared
+
+teststatic: static
+	@TMPST=tmpst_$$; \
+	if echo hello world | ${QEMU_RUN} ./minigzip | ${QEMU_RUN} ./minigzip -d && ${QEMU_RUN} ./example $$TMPST ; then \
+	  echo '		*** zlib test OK ***'; \
+	else \
+	  echo '		*** zlib test FAILED ***'; false; \
+	fi
+	@rm -f tmpst_$$
+
+testshared: shared
+	@LD_LIBRARY_PATH=`pwd`:$(LD_LIBRARY_PATH) ; export LD_LIBRARY_PATH; \
+	LD_LIBRARYN32_PATH=`pwd`:$(LD_LIBRARYN32_PATH) ; export LD_LIBRARYN32_PATH; \
+	DYLD_LIBRARY_PATH=`pwd`:$(DYLD_LIBRARY_PATH) ; export DYLD_LIBRARY_PATH; \
+	SHLIB_PATH=`pwd`:$(SHLIB_PATH) ; export SHLIB_PATH; \
+	TMPSH=tmpsh_$$; \
+	if echo hello world | ${QEMU_RUN} ./minigzipsh | ${QEMU_RUN} ./minigzipsh -d && ${QEMU_RUN} ./examplesh $$TMPSH; then \
+	  echo '		*** zlib shared test OK ***'; \
+	else \
+	  echo '		*** zlib shared test FAILED ***'; false; \
+	fi
+	@rm -f tmpsh_$$
+
+test64: all64
+	@TMP64=tmp64_$$; \
+	if echo hello world | ${QEMU_RUN} ./minigzip64 | ${QEMU_RUN} ./minigzip64 -d && ${QEMU_RUN} ./example64 $$TMP64; then \
+	  echo '		*** zlib 64-bit test OK ***'; \
+	else \
+	  echo '		*** zlib 64-bit test FAILED ***'; false; \
+	fi
+	@rm -f tmp64_$$
+
+infcover.o: $(SRCDIR)test/infcover.c $(SRCDIR)zlib.h zconf.h $(SRCDIR)inflate.h $(SRCDIR)inftrees.h
+	$(CC) $(CFLAGS) $(ZINCOUT) -c -coverage -o $@ $(SRCDIR)test/infcover.c
+
+infcover: infcover.o libz.a
+	$(CC) $(CFLAGS) -coverage -o $@ infcover.o libz.a
+
+cover: infcover
+	rm -f *.gcda
+	${QEMU_RUN} ./infcover
+	${GCOV} ${LLVM_GCOV_FLAG} inf*.c -o ./infcover.gcda
+
+libz.a: $(OBJS)
+	$(AR) $(ARFLAGS) $@ $(OBJS)
+	-@ ($(RANLIB) $@ || true) >/dev/null 2>&1
+
+match.o: match.S
+	$(CPP) match.S > _match.s
+	$(CC) -c _match.s
+	mv _match.o match.o
+	rm -f _match.s
+
+match.lo: match.S
+	$(CPP) match.S > _match.s
+	$(CC) -c -fPIC _match.s
+	mv _match.o match.lo
+	rm -f _match.s
+
+example.o: $(SRCDIR)test/example.c $(SRCDIR)zlib.h zconf.h
+	$(CC) $(CFLAGS) $(ZINCOUT) -c -o $@ $(SRCDIR)test/example.c
+
+minigzip.o: $(SRCDIR)test/minigzip.c $(SRCDIR)zlib.h zconf.h
+	$(CC) $(CFLAGS) $(ZINCOUT) -c -o $@ $(SRCDIR)test/minigzip.c
+
+example64.o: $(SRCDIR)test/example.c $(SRCDIR)zlib.h zconf.h
+	$(CC) $(CFLAGS) $(ZINCOUT) -D_FILE_OFFSET_BITS=64 -c -o $@ $(SRCDIR)test/example.c
+
+minigzip64.o: $(SRCDIR)test/minigzip.c $(SRCDIR)zlib.h zconf.h
+	$(CC) $(CFLAGS) $(ZINCOUT) -D_FILE_OFFSET_BITS=64 -c -o $@ $(SRCDIR)test/minigzip.c
+
+
+adler32.o: $(SRCDIR)adler32.c
+	$(CC) $(CFLAGS) $(ZINC) -c -o $@ $(SRCDIR)adler32.c
+
+crc32.o: $(SRCDIR)crc32.c
+	$(CC) $(CFLAGS) $(ZINC) -c -o $@ $(SRCDIR)crc32.c
+
+crc32_vx.o: $(SRCDIR)contrib/crc32vx/crc32_vx.c
+	$(CC) $(CFLAGS) $(VGFMAFLAG) $(ZINC) -c -o $@ $(SRCDIR)contrib/crc32vx/crc32_vx.c
+
+deflate.o: $(SRCDIR)deflate.c
+	$(CC) $(CFLAGS) $(ZINC) -c -o $@ $(SRCDIR)deflate.c
+
+infback.o: $(SRCDIR)infback.c
+	$(CC) $(CFLAGS) $(ZINC) -c -o $@ $(SRCDIR)infback.c
+
+inffast.o: $(SRCDIR)inffast.c
+	$(CC) $(CFLAGS) $(ZINC) -c -o $@ $(SRCDIR)inffast.c
+
+inflate.o: $(SRCDIR)inflate.c
+	$(CC) $(CFLAGS) $(ZINC) -c -o $@ $(SRCDIR)inflate.c
+
+inftrees.o: $(SRCDIR)inftrees.c
+	$(CC) $(CFLAGS) $(ZINC) -c -o $@ $(SRCDIR)inftrees.c
+
+trees.o: $(SRCDIR)trees.c
+	$(CC) $(CFLAGS) $(ZINC) -c -o $@ $(SRCDIR)trees.c
+
+zutil.o: $(SRCDIR)zutil.c $(SRCDIR)gzguts.h
+	$(CC) $(CFLAGS) $(ZINC) -c -o $@ $(SRCDIR)zutil.c
+
+compress.o: $(SRCDIR)compress.c
+	$(CC) $(CFLAGS) $(ZINC) -c -o $@ $(SRCDIR)compress.c
+
+uncompr.o: $(SRCDIR)uncompr.c
+	$(CC) $(CFLAGS) $(ZINC) -c -o $@ $(SRCDIR)uncompr.c
+
+gzclose.o: $(SRCDIR)gzclose.c
+	$(CC) $(CFLAGS) $(ZINC) -c -o $@ $(SRCDIR)gzclose.c
+
+gzlib.o: $(SRCDIR)gzlib.c
+	$(CC) $(CFLAGS) $(ZINC) -c -o $@ $(SRCDIR)gzlib.c
+
+gzread.o: $(SRCDIR)gzread.c
+	$(CC) $(CFLAGS) $(ZINC) -c -o $@ $(SRCDIR)gzread.c
+
+gzwrite.o: $(SRCDIR)gzwrite.c
+	$(CC) $(CFLAGS) $(ZINC) -c -o $@ $(SRCDIR)gzwrite.c
+
+
+adler32.lo: $(SRCDIR)adler32.c
+	-@mkdir objs 2>/dev/null || test -d objs
+	$(CC) $(SFLAGS) $(ZINC) -DPIC -c -o objs/adler32.o $(SRCDIR)adler32.c
+	-@mv objs/adler32.o $@
+
+crc32.lo: $(SRCDIR)crc32.c
+	-@mkdir objs 2>/dev/null || test -d objs
+	$(CC) $(SFLAGS) $(ZINC) -DPIC -c -o objs/crc32.o $(SRCDIR)crc32.c
+	-@mv objs/crc32.o $@
+
+crc32_vx.lo: $(SRCDIR)contrib/crc32vx/crc32_vx.c
+	-@mkdir objs 2>/dev/null || test -d objs
+	$(CC) $(SFLAGS) $(VGFMAFLAG) $(ZINC) -DPIC -c -o objs/crc32_vx.o $(SRCDIR)contrib/crc32vx/crc32_vx.c
+	-@mv objs/crc32_vx.o $@
+
+deflate.lo: $(SRCDIR)deflate.c
+	-@mkdir objs 2>/dev/null || test -d objs
+	$(CC) $(SFLAGS) $(ZINC) -DPIC -c -o objs/deflate.o $(SRCDIR)deflate.c
+	-@mv objs/deflate.o $@
+
+infback.lo: $(SRCDIR)infback.c
+	-@mkdir objs 2>/dev/null || test -d objs
+	$(CC) $(SFLAGS) $(ZINC) -DPIC -c -o objs/infback.o $(SRCDIR)infback.c
+	-@mv objs/infback.o $@
+
+inffast.lo: $(SRCDIR)inffast.c
+	-@mkdir objs 2>/dev/null || test -d objs
+	$(CC) $(SFLAGS) $(ZINC) -DPIC -c -o objs/inffast.o $(SRCDIR)inffast.c
+	-@mv objs/inffast.o $@
+
+inflate.lo: $(SRCDIR)inflate.c
+	-@mkdir objs 2>/dev/null || test -d objs
+	$(CC) $(SFLAGS) $(ZINC) -DPIC -c -o objs/inflate.o $(SRCDIR)inflate.c
+	-@mv objs/inflate.o $@
+
+inftrees.lo: $(SRCDIR)inftrees.c
+	-@mkdir objs 2>/dev/null || test -d objs
+	$(CC) $(SFLAGS) $(ZINC) -DPIC -c -o objs/inftrees.o $(SRCDIR)inftrees.c
+	-@mv objs/inftrees.o $@
+
+trees.lo: $(SRCDIR)trees.c
+	-@mkdir objs 2>/dev/null || test -d objs
+	$(CC) $(SFLAGS) $(ZINC) -DPIC -c -o objs/trees.o $(SRCDIR)trees.c
+	-@mv objs/trees.o $@
+
+zutil.lo: $(SRCDIR)zutil.c $(SRCDIR)gzguts.h
+	-@mkdir objs 2>/dev/null || test -d objs
+	$(CC) $(SFLAGS) $(ZINC) -DPIC -c -o objs/zutil.o $(SRCDIR)zutil.c
+	-@mv objs/zutil.o $@
+
+compress.lo: $(SRCDIR)compress.c
+	-@mkdir objs 2>/dev/null || test -d objs
+	$(CC) $(SFLAGS) $(ZINC) -DPIC -c -o objs/compress.o $(SRCDIR)compress.c
+	-@mv objs/compress.o $@
+
+uncompr.lo: $(SRCDIR)uncompr.c
+	-@mkdir objs 2>/dev/null || test -d objs
+	$(CC) $(SFLAGS) $(ZINC) -DPIC -c -o objs/uncompr.o $(SRCDIR)uncompr.c
+	-@mv objs/uncompr.o $@
+
+gzclose.lo: $(SRCDIR)gzclose.c
+	-@mkdir objs 2>/dev/null || test -d objs
+	$(CC) $(SFLAGS) $(ZINC) -DPIC -c -o objs/gzclose.o $(SRCDIR)gzclose.c
+	-@mv objs/gzclose.o $@
+
+gzlib.lo: $(SRCDIR)gzlib.c
+	-@mkdir objs 2>/dev/null || test -d objs
+	$(CC) $(SFLAGS) $(ZINC) -DPIC -c -o objs/gzlib.o $(SRCDIR)gzlib.c
+	-@mv objs/gzlib.o $@
+
+gzread.lo: $(SRCDIR)gzread.c
+	-@mkdir objs 2>/dev/null || test -d objs
+	$(CC) $(SFLAGS) $(ZINC) -DPIC -c -o objs/gzread.o $(SRCDIR)gzread.c
+	-@mv objs/gzread.o $@
+
+gzwrite.lo: $(SRCDIR)gzwrite.c
+	-@mkdir objs 2>/dev/null || test -d objs
+	$(CC) $(SFLAGS) $(ZINC) -DPIC -c -o objs/gzwrite.o $(SRCDIR)gzwrite.c
+	-@mv objs/gzwrite.o $@
+
+
+placebo $(SHAREDLIBV): $(PIC_OBJS) libz.a $(SRCDIR)zlib.map
+	$(LDSHARED) $(SFLAGS) -o $@ $(PIC_OBJS) $(LDSHAREDLIBC) $(LDFLAGS)
+	rm -f $(SHAREDLIB) $(SHAREDLIBM)
+	ln -s $@ $(SHAREDLIB)
+	ln -s $@ $(SHAREDLIBM)
+	-@rmdir objs
+
+example$(EXE): example.o $(STATICLIB)
+	$(CC) $(CFLAGS) $(LDFLAGS) -o $@ example.o $(TEST_LIBS)
+
+minigzip$(EXE): minigzip.o $(STATICLIB)
+	$(CC) $(CFLAGS) $(LDFLAGS) -o $@ minigzip.o $(TEST_LIBS)
+
+examplesh$(EXE): example.o $(SHAREDLIBV)
+	$(CC) $(CFLAGS) -o $@ example.o $(LDFLAGS) -L. $(SHAREDLIBV)
+
+minigzipsh$(EXE): minigzip.o $(SHAREDLIBV)
+	$(CC) $(CFLAGS) -o $@ minigzip.o $(LDFLAGS) -L. $(SHAREDLIBV)
+
+example64$(EXE): example64.o $(STATICLIB)
+	$(CC) $(CFLAGS) $(LDFLAGS) -o $@ example64.o $(TEST_LIBS)
+
+minigzip64$(EXE): minigzip64.o $(STATICLIB)
+	$(CC) $(CFLAGS) $(LDFLAGS) -o $@ minigzip64.o $(TEST_LIBS)
+
+install-libs: $(LIBS)
+	-@if [ ! -d $(DESTDIR)$(exec_prefix)  ]; then mkdir -p $(DESTDIR)$(exec_prefix); fi
+	-@if [ ! -d $(DESTDIR)$(libdir)       ]; then mkdir -p $(DESTDIR)$(libdir); fi
+	-@if [ ! -d $(DESTDIR)$(sharedlibdir) ]; then mkdir -p $(DESTDIR)$(sharedlibdir); fi
+	-@if [ ! -d $(DESTDIR)$(man3dir)      ]; then mkdir -p $(DESTDIR)$(man3dir); fi
+	-@if [ ! -d $(DESTDIR)$(pkgconfigdir) ]; then mkdir -p $(DESTDIR)$(pkgconfigdir); fi
+	rm -f $(DESTDIR)$(libdir)/$(STATICLIB)
+	cp $(STATICLIB) $(DESTDIR)$(libdir)
+	chmod 644 $(DESTDIR)$(libdir)/$(STATICLIB)
+	-@($(RANLIB) $(DESTDIR)$(libdir)/libz.a || true) >/dev/null 2>&1
+	-@if test -n "$(SHAREDLIBV)"; then \
+	  rm -f $(DESTDIR)$(sharedlibdir)/$(SHAREDLIBV); \
+	  cp $(SHAREDLIBV) $(DESTDIR)$(sharedlibdir); \
+	  echo "cp $(SHAREDLIBV) $(DESTDIR)$(sharedlibdir)"; \
+	  chmod 755 $(DESTDIR)$(sharedlibdir)/$(SHAREDLIBV); \
+	  echo "chmod 755 $(DESTDIR)$(sharedlibdir)/$(SHAREDLIBV)"; \
+	  rm -f $(DESTDIR)$(sharedlibdir)/$(SHAREDLIB) $(DESTDIR)$(sharedlibdir)/$(SHAREDLIBM); \
+	  ln -s $(SHAREDLIBV) $(DESTDIR)$(sharedlibdir)/$(SHAREDLIB); \
+	  ln -s $(SHAREDLIBV) $(DESTDIR)$(sharedlibdir)/$(SHAREDLIBM); \
+	  ($(LDCONFIG) || true)  >/dev/null 2>&1; \
+	fi
+	rm -f $(DESTDIR)$(man3dir)/zlib.3
+	cp $(SRCDIR)zlib.3 $(DESTDIR)$(man3dir)
+	chmod 644 $(DESTDIR)$(man3dir)/zlib.3
+	rm -f $(DESTDIR)$(pkgconfigdir)/zlib.pc
+	cp zlib.pc $(DESTDIR)$(pkgconfigdir)
+	chmod 644 $(DESTDIR)$(pkgconfigdir)/zlib.pc
+# The ranlib in install is needed on NeXTSTEP which checks file times
+# ldconfig is for Linux
+
+install: install-libs
+	-@if [ ! -d $(DESTDIR)$(includedir)   ]; then mkdir -p $(DESTDIR)$(includedir); fi
+	rm -f $(DESTDIR)$(includedir)/zlib.h $(DESTDIR)$(includedir)/zconf.h
+	cp $(SRCDIR)zlib.h zconf.h $(DESTDIR)$(includedir)
+	chmod 644 $(DESTDIR)$(includedir)/zlib.h $(DESTDIR)$(includedir)/zconf.h
+
+uninstall:
+	cd $(DESTDIR)$(includedir) && rm -f zlib.h zconf.h
+	cd $(DESTDIR)$(libdir) && rm -f libz.a; \
+	if test -n "$(SHAREDLIBV)" -a -f $(SHAREDLIBV); then \
+	  rm -f $(SHAREDLIBV) $(SHAREDLIB) $(SHAREDLIBM); \
+	fi
+	cd $(DESTDIR)$(man3dir) && rm -f zlib.3
+	cd $(DESTDIR)$(pkgconfigdir) && rm -f zlib.pc
+
+docs: zlib.3.pdf
+
+zlib.3.pdf: $(SRCDIR)zlib.3
+	groff -mandoc -f H -T ps $(SRCDIR)zlib.3 | ps2pdf - $@
+
+# zconf.h.cmakein: $(SRCDIR)zconf.h.in
+# 	-@ TEMPFILE=zconfh_$$; \
+# 	echo "/#define ZCONF_H/ a\\\\\n#cmakedefine Z_PREFIX\\\\\n#cmakedefine Z_HAVE_UNISTD_H\n" >> $$TEMPFILE &&\
+# 	sed -f $$TEMPFILE $(SRCDIR)zconf.h.in > $@ &&\
+# 	touch -r $(SRCDIR)zconf.h.in $@ &&\
+# 	rm $$TEMPFILE
+# 
+
+zconf: $(SRCDIR)zconf.h.in
+	cp -p $(SRCDIR)zconf.h.in zconf.h
+
+minizip-test: static
+	cd contrib/minizip && { CC="$(CC)" CFLAGS="$(CFLAGS)" $(MAKE) test ; cd ../.. ; }
+
+minizip-clean:
+	cd contrib/minizip && { $(MAKE) clean ; cd ../.. ; }
+
+mostlyclean: clean
+clean: minizip-clean
+	rm -f *.o *.lo *~ \
+	   example$(EXE) minigzip$(EXE) examplesh$(EXE) minigzipsh$(EXE) \
+	   example64$(EXE) minigzip64$(EXE) \
+	   infcover \
+	   libz.* foo.gz so_locations \
+	   _match.s maketree contrib/infback9/*.o
+	rm -rf objs
+	rm -f *.gcda *.gcno *.gcov
+	rm -f contrib/infback9/*.gcda contrib/infback9/*.gcno contrib/infback9/*.gcov
+
+maintainer-clean: distclean
+distclean: clean zconf # zconf.h.cmakein
+	rm -f Makefile zlib.pc configure.log
+	-@rm -f .DS_Store
+	@if [ -f Makefile.in ]; then \
+	printf 'all:\n\t-@echo "Please use ./configure first.  Thank you."\n' > Makefile ; \
+	printf '\ndistclean:\n\tmake -f Makefile.in distclean\n' >> Makefile ; \
+	touch -r $(SRCDIR)Makefile.in Makefile ; fi
+
+tags:
+	etags $(SRCDIR)*.[ch]
+
+adler32.o: $(SRCDIR)zutil.h $(SRCDIR)zlib.h zconf.h
+zutil.o: $(SRCDIR)zutil.h $(SRCDIR)zlib.h zconf.h $(SRCDIR)gzguts.h
+gzclose.o gzlib.o gzread.o gzwrite.o: $(SRCDIR)zlib.h zconf.h $(SRCDIR)gzguts.h
+compress.o example.o minigzip.o uncompr.o: $(SRCDIR)zlib.h zconf.h
+crc32.o: $(SRCDIR)zutil.h $(SRCDIR)zlib.h zconf.h $(SRCDIR)crc32.h
+deflate.o: $(SRCDIR)deflate.h $(SRCDIR)zutil.h $(SRCDIR)zlib.h zconf.h
+infback.o inflate.o: $(SRCDIR)zutil.h $(SRCDIR)zlib.h zconf.h $(SRCDIR)inftrees.h $(SRCDIR)inflate.h $(SRCDIR)inffast.h $(SRCDIR)inffixed.h
+inffast.o: $(SRCDIR)zutil.h $(SRCDIR)zlib.h zconf.h $(SRCDIR)inftrees.h $(SRCDIR)inflate.h $(SRCDIR)inffast.h
+inftrees.o: $(SRCDIR)zutil.h $(SRCDIR)zlib.h zconf.h $(SRCDIR)inftrees.h
+trees.o: $(SRCDIR)deflate.h $(SRCDIR)zutil.h $(SRCDIR)zlib.h zconf.h $(SRCDIR)trees.h
+crc32_vx.o: $(SRCDIR)zutil.h $(SRCDIR)zlib.h zconf.h $(SRCDIR)contrib/crc32vx/crc32_vx_hooks.h
+
+adler32.lo: $(SRCDIR)zutil.h $(SRCDIR)zlib.h zconf.h
+zutil.lo: $(SRCDIR)zutil.h $(SRCDIR)zlib.h zconf.h $(SRCDIR)gzguts.h
+gzclose.lo gzlib.lo gzread.lo gzwrite.lo: $(SRCDIR)zlib.h zconf.h $(SRCDIR)gzguts.h
+compress.lo example.lo minigzip.lo uncompr.lo: $(SRCDIR)zlib.h zconf.h
+crc32.lo: $(SRCDIR)zutil.h $(SRCDIR)zlib.h zconf.h $(SRCDIR)crc32.h
+deflate.lo: $(SRCDIR)deflate.h $(SRCDIR)zutil.h $(SRCDIR)zlib.h zconf.h
+infback.lo inflate.lo: $(SRCDIR)zutil.h $(SRCDIR)zlib.h zconf.h $(SRCDIR)inftrees.h $(SRCDIR)inflate.h $(SRCDIR)inffast.h $(SRCDIR)inffixed.h
+inffast.lo: $(SRCDIR)zutil.h $(SRCDIR)zlib.h zconf.h $(SRCDIR)inftrees.h $(SRCDIR)inflate.h $(SRCDIR)inffast.h
+inftrees.lo: $(SRCDIR)zutil.h $(SRCDIR)zlib.h zconf.h $(SRCDIR)inftrees.h
+trees.lo: $(SRCDIR)deflate.h $(SRCDIR)zutil.h $(SRCDIR)zlib.h zconf.h $(SRCDIR)trees.h
+crc32_vx.lo: $(SRCDIR)zutil.h $(SRCDIR)zlib.h zconf.h $(SRCDIR)contrib/crc32vx/crc32_vx_hooks.h

vendor/tcl/compat/zlib/README

@@ -0,0 +1,115 @@
+ZLIB DATA COMPRESSION LIBRARY
+
+zlib 1.3.2 is a general purpose data compression library.  All the code is
+thread safe (though see the FAQ for caveats).  The data format used by the zlib
+library is described by RFCs (Request for Comments) 1950 to 1952 at
+https://datatracker.ietf.org/doc/html/rfc1950 (zlib format), rfc1951 (deflate
+format) and rfc1952 (gzip format).
+
+All functions of the compression library are documented in the file zlib.h
+(volunteer to write man pages welcome, contact zlib@gzip.org).  A usage example
+of the library is given in the file test/example.c which also tests that
+the library is working correctly.  Another example is given in the file
+test/minigzip.c.  The compression library itself is composed of all source
+files in the root directory.
+
+To compile all files and run the test program, follow the instructions given at
+the top of Makefile.in.  In short "./configure; make test", and if that goes
+well, "make install" should work for most flavors of Unix.  For Windows, use
+one of the special makefiles in win32/ or contrib/vstudio/ .  For VMS, use
+make_vms.com.
+
+Questions about zlib should be sent to <zlib@gzip.org>, or to Gilles Vollant
+<info@winimage.com> for the Windows DLL version.  The zlib home page is
+https://zlib.net/ .  Before reporting a problem, please check this site to
+verify that you have the latest version of zlib; otherwise get the latest
+version and check whether the problem still exists or not.
+
+PLEASE read the zlib FAQ https://zlib.net/zlib_faq.html before asking for help.
+
+Mark Nelson <markn@ieee.org> wrote an article about zlib for the Jan.  1997
+issue of Dr.  Dobb's Journal; a copy of the article is available at
+https://zlib.net/nelson/ .
+
+The changes made in version 1.3.2 are documented in the file ChangeLog.
+
+Unsupported third party contributions are provided in directory contrib/ .
+
+zlib is available in Java using the java.util.zip package. Follow the API
+Documentation link at: https://docs.oracle.com/search/?q=java.util.zip .
+
+A Perl interface to zlib and bzip2 written by Paul Marquess <pmqs@cpan.org>
+can be found at https://github.com/pmqs/IO-Compress .
+
+A Python interface to zlib written by A.M. Kuchling <amk@amk.ca> is
+available in Python 1.5 and later versions, see
+https://docs.python.org/3/library/zlib.html .
+
+zlib is built into tcl: https://wiki.tcl-lang.org/page/zlib .
+
+An experimental package to read and write files in .zip format, written on top
+of zlib by Gilles Vollant <info@winimage.com>, is available in the
+contrib/minizip directory of zlib.
+
+
+Notes for some targets:
+
+- For Windows DLL versions, please see win32/DLL_FAQ.txt
+
+- For 64-bit Irix, deflate.c must be compiled without any optimization. With
+  -O, one libpng test fails. The test works in 32 bit mode (with the -n32
+  compiler flag). The compiler bug has been reported to SGI.
+
+- zlib doesn't work with gcc 2.6.3 on a DEC 3000/300LX under OSF/1 2.1 it works
+  when compiled with cc.
+
+- On Digital Unix 4.0D (formerly OSF/1) on AlphaServer, the cc option -std1 is
+  necessary to get gzprintf working correctly. This is done by configure.
+
+- zlib doesn't work on HP-UX 9.05 with some versions of /bin/cc. It works with
+  other compilers. Use "make test" to check your compiler.
+
+- For PalmOs, see https://palmzlib.sourceforge.net/
+
+
+Acknowledgments:
+
+  The deflate format used by zlib was defined by Phil Katz.  The deflate and
+  zlib specifications were written by L.  Peter Deutsch.  Thanks to all the
+  people who reported problems and suggested various improvements in zlib; they
+  are too numerous to cite here.
+
+Copyright notice:
+
+ (C) 1995-2026 Jean-loup Gailly and Mark Adler
+
+  This software is provided 'as-is', without any express or implied
+  warranty.  In no event will the authors be held liable for any damages
+  arising from the use of this software.
+
+  Permission is granted to anyone to use this software for any purpose,
+  including commercial applications, and to alter it and redistribute it
+  freely, subject to the following restrictions:
+
+  1. The origin of this software must not be misrepresented; you must not
+     claim that you wrote the original software. If you use this software
+     in a product, an acknowledgment in the product documentation would be
+     appreciated but is not required.
+  2. Altered source versions must be plainly marked as such, and must not be
+     misrepresented as being the original software.
+  3. This notice may not be removed or altered from any source distribution.
+
+  Jean-loup Gailly        Mark Adler
+  jloup@gzip.org          madler@alumni.caltech.edu
+
+If you use the zlib library in a product, we would appreciate *not* receiving
+lengthy legal documents to sign.  The sources are provided for free but without
+warranty of any kind.  The library has been entirely written by Jean-loup
+Gailly and Mark Adler; it does not include third-party code.  We make all
+contributions to and distributions of this project solely in our personal
+capacity, and are not conveying any rights to any intellectual property of
+any third parties.
+
+If you redistribute modified sources, we would appreciate that you include in
+the file ChangeLog history information documenting your changes.  Please read
+the FAQ for more information on the distribution of modified source versions.

vendor/tcl/compat/zlib/README-cmake.md

@@ -0,0 +1,79 @@
+# For building with cmake at least version 3.12 (minizip 3.12) is needed
+
+In most cases the usual
+
+    cmake -S . -B build -D CMAKE_BUILD_TYPE=Release
+
+will create everything you need, however if you want something off default you can adjust several options fit your needs.
+Every option is list below (excluding the cmake-standard options), they can be set via cmake-gui or on cmdline with
+
+    -D<option>=ON/OFF
+
+## ZLIB-options with defaults ##
+
+    ZLIB_BUILD_TESTING=ON -- Enable Zlib Examples as tests
+
+    ZLIB_BUILD_SHARED=ON -- Enable building zlib shared library
+
+    ZLIB_BUILD_STATIC=ON -- Enable building zlib static library
+
+    ZLIB_BUILD_MINIZIP=ON -- Enable building libminizip contrib library
+
+If this option is turned on, additional options are available from minizip (see below)
+
+    ZLIB_INSTALL=ON -- Enable installation of zlib
+
+    ZLIB_PREFIX=OFF -- prefix for all types and library functions, see zconf.h.in
+
+This option is only on windows available and may/will be turned off and removed somewhen in the future.
+If you rely cmake for finding and using zlib, this can be turned off, as `zlib1.dll` will never be used.
+
+## minizip-options with defaults ##
+
+    MINIZIP_BUILD_SHARED=ON -- Enable building minizip shared library
+
+    MINIZIP_BUILD_STATIC=ON -- Enable building minizip static library
+
+    MINIZIP_BUILD_TESTING=ON -- Enable testing of minizip
+
+    MINIZIP_ENABLE_BZIP2=ON -- Build minizip withj bzip2 support
+
+A usable installation of bzip2 is needed or config will fail. Turn this option of in this case.
+
+    MINIZIP_INSTALL=ON -- Enable installation of minizip
+
+This option is only available on mingw as they tend to name this lib different. Maybe this will also be
+removed in the future as. If you rely cmake for finding and using zlib, this can be turned off, as
+the other file will never be used.
+
+## Using the libs ##
+
+To pull in what you need it's enough to just write
+
+    find_package(ZLIB CONFIG)
+
+or
+
+    find_package(minizip CONFIG)
+
+in your CMakeLists.txt, however it is advised to specify what you really want via:
+
+    find_package(ZLIB CONFIG COMPONENTS shared static REQUIRED)
+
+or
+
+    find_package(minizip CONFIG COMPONENTS shared static REQUIRED)
+
+As it's possible to only build the shared or the static lib, you can make sure that everything you need
+is found. If no COMPONENTS are requested, everything needs to be found to satisfy your request. If the
+libraries are optional in you project, you can omit the REQUIRED and check yourself if the targets you
+want to link against are created.
+
+When you search for minizip, it will search zlib for you, so only one of both is needed.
+
+## Imported targets ##
+
+When found the following targets are created for you:
+
+    ZLIB::ZLIB and ZLIB::ZLIBSTATIC -- for zlib
+    MINIZIP::minizip and MINIZIP::minizipstatic -- for minizip

vendor/tcl/compat/zlib/adler32.c

@@ -0,0 +1,164 @@
+/* adler32.c -- compute the Adler-32 checksum of a data stream
+ * Copyright (C) 1995-2011, 2016 Mark Adler
+ * For conditions of distribution and use, see copyright notice in zlib.h
+ */
+
+/* @(#) $Id$ */
+
+#include "zutil.h"
+
+#define BASE 65521U     /* largest prime smaller than 65536 */
+#define NMAX 5552
+/* NMAX is the largest n such that 255n(n+1)/2 + (n+1)(BASE-1) <= 2^32-1 */
+
+#define DO1(buf,i)  {adler += (buf)[i]; sum2 += adler;}
+#define DO2(buf,i)  DO1(buf,i); DO1(buf,i+1);
+#define DO4(buf,i)  DO2(buf,i); DO2(buf,i+2);
+#define DO8(buf,i)  DO4(buf,i); DO4(buf,i+4);
+#define DO16(buf)   DO8(buf,0); DO8(buf,8);
+
+/* use NO_DIVIDE if your processor does not do division in hardware --
+   try it both ways to see which is faster */
+#ifdef NO_DIVIDE
+/* note that this assumes BASE is 65521, where 65536 % 65521 == 15
+   (thank you to John Reiser for pointing this out) */
+#  define CHOP(a) \
+    do { \
+        unsigned long tmp = a >> 16; \
+        a &= 0xffffUL; \
+        a += (tmp << 4) - tmp; \
+    } while (0)
+#  define MOD28(a) \
+    do { \
+        CHOP(a); \
+        if (a >= BASE) a -= BASE; \
+    } while (0)
+#  define MOD(a) \
+    do { \
+        CHOP(a); \
+        MOD28(a); \
+    } while (0)
+#  define MOD63(a) \
+    do { /* this assumes a is not negative */ \
+        z_off64_t tmp = a >> 32; \
+        a &= 0xffffffffL; \
+        a += (tmp << 8) - (tmp << 5) + tmp; \
+        tmp = a >> 16; \
+        a &= 0xffffL; \
+        a += (tmp << 4) - tmp; \
+        tmp = a >> 16; \
+        a &= 0xffffL; \
+        a += (tmp << 4) - tmp; \
+        if (a >= BASE) a -= BASE; \
+    } while (0)
+#else
+#  define MOD(a) a %= BASE
+#  define MOD28(a) a %= BASE
+#  define MOD63(a) a %= BASE
+#endif
+
+/* ========================================================================= */
+uLong ZEXPORT adler32_z(uLong adler, const Bytef *buf, z_size_t len) {
+    unsigned long sum2;
+    unsigned n;
+
+    /* split Adler-32 into component sums */
+    sum2 = (adler >> 16) & 0xffff;
+    adler &= 0xffff;
+
+    /* in case user likes doing a byte at a time, keep it fast */
+    if (len == 1) {
+        adler += buf[0];
+        if (adler >= BASE)
+            adler -= BASE;
+        sum2 += adler;
+        if (sum2 >= BASE)
+            sum2 -= BASE;
+        return adler | (sum2 << 16);
+    }
+
+    /* initial Adler-32 value (deferred check for len == 1 speed) */
+    if (buf == Z_NULL)
+        return 1L;
+
+    /* in case short lengths are provided, keep it somewhat fast */
+    if (len < 16) {
+        while (len--) {
+            adler += *buf++;
+            sum2 += adler;
+        }
+        if (adler >= BASE)
+            adler -= BASE;
+        MOD28(sum2);            /* only added so many BASE's */
+        return adler | (sum2 << 16);
+    }
+
+    /* do length NMAX blocks -- requires just one modulo operation */
+    while (len >= NMAX) {
+        len -= NMAX;
+        n = NMAX / 16;          /* NMAX is divisible by 16 */
+        do {
+            DO16(buf);          /* 16 sums unrolled */
+            buf += 16;
+        } while (--n);
+        MOD(adler);
+        MOD(sum2);
+    }
+
+    /* do remaining bytes (less than NMAX, still just one modulo) */
+    if (len) {                  /* avoid modulos if none remaining */
+        while (len >= 16) {
+            len -= 16;
+            DO16(buf);
+            buf += 16;
+        }
+        while (len--) {
+            adler += *buf++;
+            sum2 += adler;
+        }
+        MOD(adler);
+        MOD(sum2);
+    }
+
+    /* return recombined sums */
+    return adler | (sum2 << 16);
+}
+
+/* ========================================================================= */
+uLong ZEXPORT adler32(uLong adler, const Bytef *buf, uInt len) {
+    return adler32_z(adler, buf, len);
+}
+
+/* ========================================================================= */
+local uLong adler32_combine_(uLong adler1, uLong adler2, z_off64_t len2) {
+    unsigned long sum1;
+    unsigned long sum2;
+    unsigned rem;
+
+    /* for negative len, return invalid adler32 as a clue for debugging */
+    if (len2 < 0)
+        return 0xffffffffUL;
+
+    /* the derivation of this formula is left as an exercise for the reader */
+    MOD63(len2);                /* assumes len2 >= 0 */
+    rem = (unsigned)len2;
+    sum1 = adler1 & 0xffff;
+    sum2 = rem * sum1;
+    MOD(sum2);
+    sum1 += (adler2 & 0xffff) + BASE - 1;
+    sum2 += ((adler1 >> 16) & 0xffff) + ((adler2 >> 16) & 0xffff) + BASE - rem;
+    if (sum1 >= BASE) sum1 -= BASE;
+    if (sum1 >= BASE) sum1 -= BASE;
+    if (sum2 >= ((unsigned long)BASE << 1)) sum2 -= ((unsigned long)BASE << 1);
+    if (sum2 >= BASE) sum2 -= BASE;
+    return sum1 | (sum2 << 16);
+}
+
+/* ========================================================================= */
+uLong ZEXPORT adler32_combine(uLong adler1, uLong adler2, z_off_t len2) {
+    return adler32_combine_(adler1, adler2, len2);
+}
+
+uLong ZEXPORT adler32_combine64(uLong adler1, uLong adler2, z_off64_t len2) {
+    return adler32_combine_(adler1, adler2, len2);
+}

vendor/tcl/compat/zlib/amiga/Makefile.pup

@@ -0,0 +1,69 @@
+# Amiga powerUP (TM) Makefile
+# makefile for libpng and SAS C V6.58/7.00 PPC compiler
+# Copyright (C) 1998 by Andreas R. Kleinert
+
+LIBNAME	= libzip.a
+
+CC	= scppc
+CFLAGS	= NOSTKCHK NOSINT OPTIMIZE OPTGO OPTPEEP OPTINLOCAL OPTINL \
+	  OPTLOOP OPTRDEP=8 OPTDEP=8 OPTCOMP=8 NOVER
+AR	= ppc-amigaos-ar cr
+RANLIB	= ppc-amigaos-ranlib
+LD	= ppc-amigaos-ld -r
+LDFLAGS	= -o
+LDLIBS	= LIB:scppc.a LIB:end.o
+RM	= delete quiet
+
+OBJS = adler32.o compress.o crc32.o gzclose.o gzlib.o gzread.o gzwrite.o \
+       uncompr.o deflate.o trees.o zutil.o inflate.o infback.o inftrees.o inffast.o
+
+TEST_OBJS = example.o minigzip.o
+
+all: example minigzip
+
+check: test
+test: all
+	example
+	echo hello world | minigzip | minigzip -d
+
+$(LIBNAME): $(OBJS)
+	$(AR) $@ $(OBJS)
+	-$(RANLIB) $@
+
+example: example.o $(LIBNAME)
+	$(LD) $(LDFLAGS) $@ LIB:c_ppc.o $@.o $(LIBNAME) $(LDLIBS)
+
+minigzip: minigzip.o $(LIBNAME)
+	$(LD) $(LDFLAGS) $@ LIB:c_ppc.o $@.o $(LIBNAME) $(LDLIBS)
+
+mostlyclean: clean
+clean:
+	$(RM) *.o example minigzip $(LIBNAME) foo.gz
+
+zip:
+	zip -ul9 zlib README ChangeLog Makefile Make????.??? Makefile.?? \
+	  descrip.mms *.[ch]
+
+tgz:
+	cd ..; tar cfz zlib/zlib.tgz zlib/README zlib/ChangeLog zlib/Makefile \
+	  zlib/Make????.??? zlib/Makefile.?? zlib/descrip.mms zlib/*.[ch]
+
+# DO NOT DELETE THIS LINE -- make depend depends on it.
+
+adler32.o: zlib.h zconf.h
+compress.o: zlib.h zconf.h
+crc32.o: crc32.h zlib.h zconf.h
+deflate.o: deflate.h zutil.h zlib.h zconf.h
+example.o: zlib.h zconf.h
+gzclose.o: zlib.h zconf.h gzguts.h
+gzlib.o: zlib.h zconf.h gzguts.h
+gzread.o: zlib.h zconf.h gzguts.h
+gzwrite.o: zlib.h zconf.h gzguts.h
+inffast.o: zutil.h zlib.h zconf.h inftrees.h inflate.h inffast.h
+inflate.o: zutil.h zlib.h zconf.h inftrees.h inflate.h inffast.h
+infback.o: zutil.h zlib.h zconf.h inftrees.h inflate.h inffast.h
+inftrees.o: zutil.h zlib.h zconf.h inftrees.h
+minigzip.o: zlib.h zconf.h
+trees.o: deflate.h zutil.h zlib.h zconf.h trees.h
+uncompr.o: zlib.h zconf.h
+zutil.o: zutil.h zlib.h zconf.h

vendor/tcl/compat/zlib/amiga/Makefile.sas

@@ -0,0 +1,68 @@
+# SMakefile for zlib
+# Modified from the standard UNIX Makefile Copyright Jean-loup Gailly
+# Osma Ahvenlampi <Osma.Ahvenlampi@hut.fi>
+# Amiga, SAS/C 6.56 & Smake
+
+CC=sc
+CFLAGS=OPT
+#CFLAGS=OPT CPU=68030
+#CFLAGS=DEBUG=LINE
+LDFLAGS=LIB z.lib
+
+SCOPTIONS=OPTSCHED OPTINLINE OPTALIAS OPTTIME OPTINLOCAL STRMERGE \
+       NOICONS PARMS=BOTH NOSTACKCHECK UTILLIB NOVERSION ERRORREXX \
+       DEF=POSTINC
+
+OBJS = adler32.o compress.o crc32.o gzclose.o gzlib.o gzread.o gzwrite.o \
+       uncompr.o deflate.o trees.o zutil.o inflate.o infback.o inftrees.o inffast.o
+
+TEST_OBJS = example.o minigzip.o
+
+all: SCOPTIONS example minigzip
+
+check: test
+test: all
+	example
+	echo hello world | minigzip | minigzip -d
+
+install: z.lib
+	copy clone zlib.h zconf.h INCLUDE:
+	copy clone z.lib LIB:
+
+z.lib: $(OBJS)
+	oml z.lib r $(OBJS)
+
+example: example.o z.lib
+	$(CC) $(CFLAGS) LINK TO $@ example.o $(LDFLAGS)
+
+minigzip: minigzip.o z.lib
+	$(CC) $(CFLAGS) LINK TO $@ minigzip.o $(LDFLAGS)
+
+mostlyclean: clean
+clean:
+	-delete force quiet example minigzip *.o z.lib foo.gz *.lnk SCOPTIONS
+
+SCOPTIONS: Makefile.sas
+	copy to $@ <from <
+$(SCOPTIONS)
+<
+
+# DO NOT DELETE THIS LINE -- make depend depends on it.
+
+adler32.o: zlib.h zconf.h
+compress.o: zlib.h zconf.h
+crc32.o: crc32.h zlib.h zconf.h
+deflate.o: deflate.h zutil.h zlib.h zconf.h
+example.o: zlib.h zconf.h
+gzclose.o: zlib.h zconf.h gzguts.h
+gzlib.o: zlib.h zconf.h gzguts.h
+gzread.o: zlib.h zconf.h gzguts.h
+gzwrite.o: zlib.h zconf.h gzguts.h
+inffast.o: zutil.h zlib.h zconf.h inftrees.h inflate.h inffast.h
+inflate.o: zutil.h zlib.h zconf.h inftrees.h inflate.h inffast.h
+infback.o: zutil.h zlib.h zconf.h inftrees.h inflate.h inffast.h
+inftrees.o: zutil.h zlib.h zconf.h inftrees.h
+minigzip.o: zlib.h zconf.h
+trees.o: deflate.h zutil.h zlib.h zconf.h trees.h
+uncompr.o: zlib.h zconf.h
+zutil.o: zutil.h zlib.h zconf.h

vendor/tcl/compat/zlib/compress.c

@@ -0,0 +1,99 @@
+/* compress.c -- compress a memory buffer
+ * Copyright (C) 1995-2026 Jean-loup Gailly, Mark Adler
+ * For conditions of distribution and use, see copyright notice in zlib.h
+ */
+
+/* @(#) $Id$ */
+
+#define ZLIB_INTERNAL
+#include "zlib.h"
+
+/* ===========================================================================
+     Compresses the source buffer into the destination buffer. The level
+   parameter has the same meaning as in deflateInit.  sourceLen is the byte
+   length of the source buffer. Upon entry, destLen is the total size of the
+   destination buffer, which must be at least 0.1% larger than sourceLen plus
+   12 bytes. Upon exit, destLen is the actual size of the compressed buffer.
+
+     compress2 returns Z_OK if success, Z_MEM_ERROR if there was not enough
+   memory, Z_BUF_ERROR if there was not enough room in the output buffer,
+   Z_STREAM_ERROR if the level parameter is invalid.
+
+     The _z versions of the functions take size_t length arguments.
+*/
+int ZEXPORT compress2_z(Bytef *dest, z_size_t *destLen, const Bytef *source,
+                        z_size_t sourceLen, int level) {
+    z_stream stream;
+    int err;
+    const uInt max = (uInt)-1;
+    z_size_t left;
+
+    if ((sourceLen > 0 && source == NULL) ||
+        destLen == NULL || (*destLen > 0 && dest == NULL))
+        return Z_STREAM_ERROR;
+
+    left = *destLen;
+    *destLen = 0;
+
+    stream.zalloc = (alloc_func)0;
+    stream.zfree = (free_func)0;
+    stream.opaque = (voidpf)0;
+
+    err = deflateInit(&stream, level);
+    if (err != Z_OK) return err;
+
+    stream.next_out = dest;
+    stream.avail_out = 0;
+    stream.next_in = (z_const Bytef *)source;
+    stream.avail_in = 0;
+
+    do {
+        if (stream.avail_out == 0) {
+            stream.avail_out = left > (z_size_t)max ? max : (uInt)left;
+            left -= stream.avail_out;
+        }
+        if (stream.avail_in == 0) {
+            stream.avail_in = sourceLen > (z_size_t)max ? max :
+                                                          (uInt)sourceLen;
+            sourceLen -= stream.avail_in;
+        }
+        err = deflate(&stream, sourceLen ? Z_NO_FLUSH : Z_FINISH);
+    } while (err == Z_OK);
+
+    *destLen = (z_size_t)(stream.next_out - dest);
+    deflateEnd(&stream);
+    return err == Z_STREAM_END ? Z_OK : err;
+}
+int ZEXPORT compress2(Bytef *dest, uLongf *destLen, const Bytef *source,
+                      uLong sourceLen, int level) {
+    int ret;
+    z_size_t got = *destLen;
+    ret = compress2_z(dest, &got, source, sourceLen, level);
+    *destLen = (uLong)got;
+    return ret;
+}
+/* ===========================================================================
+ */
+int ZEXPORT compress_z(Bytef *dest, z_size_t *destLen, const Bytef *source,
+                       z_size_t sourceLen) {
+    return compress2_z(dest, destLen, source, sourceLen,
+                       Z_DEFAULT_COMPRESSION);
+}
+int ZEXPORT compress(Bytef *dest, uLongf *destLen, const Bytef *source,
+                     uLong sourceLen) {
+    return compress2(dest, destLen, source, sourceLen, Z_DEFAULT_COMPRESSION);
+}
+
+/* ===========================================================================
+     If the default memLevel or windowBits for deflateInit() is changed, then
+   this function needs to be updated.
+ */
+z_size_t ZEXPORT compressBound_z(z_size_t sourceLen) {
+    z_size_t bound = sourceLen + (sourceLen >> 12) + (sourceLen >> 14) +
+                     (sourceLen >> 25) + 13;
+    return bound < sourceLen ? (z_size_t)-1 : bound;
+}
+uLong ZEXPORT compressBound(uLong sourceLen) {
+    z_size_t bound = compressBound_z(sourceLen);
+    return (uLong)bound != bound ? (uLong)-1 : (uLong)bound;
+}

vendor/tcl/compat/zlib/contrib/CMakeLists.txt

@@ -0,0 +1,61 @@
+function(zlib_add_contrib_lib name description dir)
+    option(ZLIB_BUILD_${name} "Enable building of ${description}" OFF)
+
+    if(ZLIB_BUILD_${name})
+        if(NOT DEFINED ZLIB_${name}_BUILD_SHARED)
+            set(ZLIB_${name}_BUILD_SHARED ${ZLIB_BUILD_SHARED} CACHE BOOL "")
+        endif(NOT DEFINED ZLIB_${name}_BUILD_SHARED)
+
+        if(NOT DEFINED ZLIB_${name}_BUILD_STATIC)
+            set(ZLIB_${name}_BUILD_STATIC ${ZLIB_BUILD_STATIC} CACHE BOOL "")
+        endif(NOT DEFINED ZLIB_${name}_BUILD_STATIC)
+
+        if(NOT DEFINED ZLIB_${name}_BUILD_TESTING)
+            set(ZLIB_${name}_BUILD_TESTING ${ZLIB_BUILD_TESTING} CACHE BOOL "")
+        endif(NOT DEFINED ZLIB_${name}_BUILD_TESTING)
+
+        if(NOT DEFINED ZLIB_${name}_INSTALL)
+            set(ZLIB_${name}_INSTALL ${ZLIB_INSTALL} CACHE BOOL "")
+        endif(NOT DEFINED ZLIB_${name}_INSTALL)
+
+        add_subdirectory(${dir}/)
+    endif(ZLIB_BUILD_${name})
+endfunction(zlib_add_contrib_lib name description dir)
+
+function(zlib_add_contrib_feature name description dir)
+    if(ARGC EQUAL 4)
+        set(default_on ${ARGV3})
+    else()
+        set(default_on Off)
+    endif()
+
+    option(ZLIB_WITH_${name}
+           "Enable build ${description}"
+           ${default_on})
+
+    if(ZLIB_WITH_${name})
+        add_subdirectory(${dir}/)
+    endif(ZLIB_WITH_${name})
+endfunction(zlib_add_contrib_feature name description dir)
+
+zlib_add_contrib_feature("GVMAT64"
+    "of an optimized longest_match for 32 bits x86_64"
+    gcc_gvmat64)
+
+zlib_add_contrib_feature(INFBACK9 "with support for method 9 deflate" infback9)
+zlib_add_contrib_feature(CRC32VX "with S390X-CRC32VX implementation" crc32vx)
+zlib_add_contrib_lib(ADA "Ada bindings" ada)
+zlib_add_contrib_lib(BLAST "blast binary" blast)
+zlib_add_contrib_lib(IOSTREAM3 "IOStream C++ bindings V3" iostream3)
+zlib_add_contrib_lib(MINIZIP "minizip library" minizip)
+zlib_add_contrib_lib(PUFF "puff decompress library" puff)
+
+if(WIN32)
+    zlib_add_contrib_lib(TESTZLIB "testzlib binary" testzlib)
+
+    if (ZLIB_BUILD_ZLIB1_DLL)
+        add_subdirectory(zlib1-dll/)
+    endif (ZLIB_BUILD_ZLIB1_DLL)
+
+    option(ZLIB_BUILD_ZLIB1_DLL "Build the legacy zlib + minizip DLL" OFF)
+endif(WIN32)

vendor/tcl/compat/zlib/contrib/README.contrib

@@ -0,0 +1,57 @@
+All files under this contrib directory are UNSUPPORTED. They were
+provided by users of zlib and were not tested by the authors of zlib.
+Use at your own risk. Please contact the authors of the contributions
+for help about these, not the zlib authors. Thanks.
+
+
+ada/        by Dmitriy Anisimkov <anisimkov@yahoo.com>
+        Support for Ada
+        See https://zlib-ada.sourceforge.net/
+
+blast/      by Mark Adler <madler@alumni.caltech.edu>
+        Decompressor for output of PKWare Data Compression Library (DCL)
+
+delphi/     by Cosmin Truta <cosmint@cs.ubbcluj.ro>
+        Support for Delphi and C++ Builder
+
+dotzlib/    by Henrik Ravn <henrik@ravn.com>
+        Support for Microsoft .Net and Visual C++ .Net
+
+gcc_gvmat64/by Gilles Vollant <info@winimage.com>
+        GCC Version of x86 64-bit (AMD64 and Intel EM64t) code for x64
+        assembler to replace longest_match() and inflate_fast()
+
+infback9/   by Mark Adler <madler@alumni.caltech.edu>
+        Unsupported diffs to infback to decode the deflate64 format
+
+iostream/   by Kevin Ruland <kevin@rodin.wustl.edu>
+        A C++ I/O streams interface to the zlib gz* functions
+
+iostream2/  by Tyge Løvset <Tyge.Lovset@cmr.no>
+        Another C++ I/O streams interface
+
+iostream3/  by Ludwig Schwardt <schwardt@sun.ac.za>
+            and Kevin Ruland <kevin@rodin.wustl.edu>
+        Yet another C++ I/O streams interface
+
+minizip/    by Gilles Vollant <info@winimage.com>
+        Mini zip and unzip based on zlib
+        Includes Zip64 support by Mathias Svensson <mathias@result42.com>
+        See https://www.winimage.com/zLibDll/minizip.html
+
+pascal/     by Bob Dellaca <bobdl@xtra.co.nz> et al.
+        Support for Pascal
+
+puff/       by Mark Adler <madler@alumni.caltech.edu>
+        Small, low memory usage inflate.  Also serves to provide an
+        unambiguous description of the deflate format.
+
+crc32vx/      by Ilya Leoshkevich <iii@linux.ibm.com>
+        Hardware-accelerated CRC32 on IBM Z with Z13 VX extension.
+
+testzlib/   by Gilles Vollant <info@winimage.com>
+        Example of the use of zlib
+
+zlib1-dll/
+            by @Vollstrecker on github.com
+        Build the legacy zlib1.dll with zlib and minizip.

vendor/tcl/compat/zlib/contrib/ada/CMakeLists.txt

@@ -0,0 +1,217 @@
+cmake_minimum_required(VERSION 3.12...3.31)
+
+set(CMAKE_MODULE_PATH "${CMAKE_CURRENT_SOURCE_DIR}/cmake/Modules")
+
+project(
+    zlibAda
+    VERSION 1.0.0
+    LANGUAGES C ADA
+    DESCRIPTION "A library for creating zipfiles based in zlib"
+    HOMEPAGE_URL "https://www.zlib.net")
+
+option(ZLIB_ADA_BUILD_SHARED "Enable building ada bindings shared library" ON)
+option(ZLIB_ADA_BUILD_STATIC "Enable building ada bindings static library" ON)
+option(ZLIB_ADA_BUILD_TESTING "Enable building tests for ada bindings library" ON)
+
+if(WIN32 OR CYGWIN)
+    set(zlib_Ada_static_suffix "s")
+    set(CMAKE_DEBUG_POSTFIX "d")
+endif(WIN32 OR CYGWIN)
+
+if(NOT DEFINED ZLIB_BUILD_ADA)
+    if(ZLIB_ADA_BUILD_SHARED)
+        list(APPEND REQUIRED_COMPONENTS "shared")
+    endif(ZLIB_ADA_BUILD_SHARED)
+
+    if(ZLIB_ADA_BUILD_STATIC)
+        list(APPEND REQUIRED_COMPONENTS "static")
+    endif(ZLIB_ADA_BUILD_STATIC)
+
+    find_package(ZLIB REQUIRED COMPONENTS ${REQUIRED_COMPONENTS} CONFIG)
+endif(NOT DEFINED ZLIB_BUILD_ADA)
+
+function(ZLIB_ADA_findTestEnv testName)
+    set(testEnv "PATH=")
+
+    if(MSVC OR MINGW)
+        set(separator "\\\;")
+    else()
+        set(separator ":")
+    endif()
+
+    string(APPEND testEnv "$<TARGET_FILE_DIR:ZLIB::ZLIB>${separator}")
+    string(APPEND testEnv "$ENV{PATH}")
+
+    set_tests_properties(${testName} PROPERTIES ENVIRONMENT "${testEnv}")
+endfunction(ZLIB_ADA_findTestEnv testName)
+
+if(ZLIB_ADA_BUILD_SHARED)
+    ada_add_library(zlib_ada_Ada SHARED
+        zlib-thin.adb
+        zlib.adb)
+
+    set_target_properties(zlib_ada_Ada
+        PROPERTIES OUTPUT_NAME zlib-ada)
+
+    target_link_libraries(zlib_ada_Ada
+        INTERFACE ZLIB::ZLIB)
+
+    ada_add_library(zlib_ada_streams SHARED
+        zlib-streams.adb)
+
+    target_link_libraries(zlib_ada_streams
+        PUBLIC
+            zlib_ada_Ada)
+
+    ada_find_ali(zlib_ada_streams)
+
+    if(ZLIB_ADA_BUILD_TESTING)
+        enable_testing()
+        ada_add_executable(zlib_ada_test test.adb)
+
+        target_link_libraries(zlib_ada_test
+            PRIVATE
+                zlib_ada_Ada
+                zlib_ada_streams)
+
+        ada_find_ali(zlib_ada_test)
+
+        add_test(NAME zlib_ada_ada-test COMMAND zlib_ada_test)
+        set_tests_properties(zlib_ada_ada-test PROPERTIES FIXTURES_REQUIRED zlib_ada_cleanup)
+
+        if(MSVC
+           OR MSYS
+           OR MINGW
+           OR CYGWIN)
+            zlib_ada_findtestenv(zlib_ada_ada-test)
+        endif(
+            MSVC
+            OR MSYS
+            OR MINGW
+            OR CYGWIN)
+
+        ada_add_executable(zlib_ada_buffer_demo buffer_demo.adb)
+
+        target_link_libraries(zlib_ada_buffer_demo
+            PRIVATE
+                zlib_ada_Ada)
+
+        ada_find_ali(zlib_ada_buffer_demo)
+
+        add_test(NAME zlib_ada_buffer-demo COMMAND zlib_ada_buffer_demo)
+
+        if(MSVC
+           OR MSYS
+           OR MINGW
+           OR CYGWIN)
+            zlib_ada_findtestenv(zlib_ada_buffer-demo)
+        endif(
+            MSVC
+            OR MSYS
+            OR MINGW
+            OR CYGWIN)
+
+        ada_add_executable(zlib_ada_mtest mtest.adb)
+
+        target_link_libraries(zlib_ada_mtest
+            PRIVATE
+                zlib_ada_Ada)
+
+        ada_find_ali(zlib_ada_mtest)
+
+        #Not adding test as this is an endless-loop
+
+        ada_add_executable(zlib_ada_read read.adb)
+
+        target_link_libraries(zlib_ada_read
+            PRIVATE
+                zlib_ada_Ada)
+
+        ada_find_ali(zlib_ada_read)
+
+        add_test(NAME zlib_ada_read COMMAND zlib_ada_read)
+
+        if(MSVC
+           OR MSYS
+           OR MINGW
+           OR CYGWIN)
+            zlib_ada_findtestenv(zlib_ada_read)
+        endif(
+            MSVC
+            OR MSYS
+            OR MINGW
+            OR CYGWIN)
+    endif(ZLIB_ADA_BUILD_TESTING)
+endif(ZLIB_ADA_BUILD_SHARED)
+
+if(ZLIB_ADA_BUILD_STATIC)
+    ada_add_library(zlib_ada_AdaStatic STATIC
+        zlib-thin.adb
+        zlib.adb)
+
+    target_link_libraries(zlib_ada_AdaStatic
+        INTERFACE ZLIB::ZLIBSTATIC)
+
+    set_target_properties(zlib_ada_AdaStatic
+        PROPERTIES OUTPUT_NAME zlib-ada${zlib_Ada_static_suffix})
+
+    ada_add_library(zlib_ada_streamsStatic STATIC
+        zlib-streams.adb)
+
+    target_link_libraries(zlib_ada_streamsStatic
+        PUBLIC
+            zlib_ada_AdaStatic)
+
+    ada_find_ali(zlib_ada_streamsStatic)
+
+    if(ZLIB_ADA_BUILD_TESTING)
+        enable_testing()
+        ada_add_executable(zlib_ada_testStatic test.adb)
+
+        target_link_libraries(zlib_ada_testStatic
+            PRIVATE
+                zlib_ada_AdaStatic
+                zlib_ada_streamsStatic)
+
+        ada_find_ali(zlib_ada_testStatic)
+
+        add_test(NAME zlib_ada_testStatic COMMAND zlib_ada_testStatic)
+        set_tests_properties(zlib_ada_testStatic PROPERTIES FIXTURES_REQUIRED zlib_ada_cleanup)
+
+        ada_add_executable(zlib_ada_buffer-demoStatic buffer_demo.adb)
+
+        target_link_libraries(zlib_ada_buffer-demoStatic
+            PRIVATE
+                zlib_ada_AdaStatic)
+
+        ada_find_ali(zlib_ada_buffer-demoStatic)
+
+        add_test(NAME zlib_ada_buffer-demoStatic COMMAND zlib_ada_buffer-demoStatic)
+
+        ada_add_executable(zlib_ada_mtestStatic mtest.adb)
+
+        target_link_libraries(zlib_ada_mtestStatic
+            PRIVATE
+                zlib_ada_AdaStatic)
+
+        ada_find_ali(zlib_ada_mtestStatic)
+
+        # Not adding test as this is an endless-loop
+
+        ada_add_executable(zlib_ada_readStatic read.adb)
+
+        target_link_libraries(zlib_ada_readStatic
+            PRIVATE
+                zlib_ada_AdaStatic)
+
+        ada_find_ali(zlib_ada_readStatic)
+
+        add_test(NAME zlib_ada_readStatic COMMAND zlib_ada_readStatic)
+    endif(ZLIB_ADA_BUILD_TESTING)
+endif(ZLIB_ADA_BUILD_STATIC)
+
+if(ZLIB_ADA_BUILD_TESTING)
+    add_test(NAME zlib_ada_cleanup COMMAND ${CMAKE_COMMAND} -E rm ${CMAKE_CURRENT_BINARY_DIR}/testzlib.in
+        ${CMAKE_CURRENT_BINARY_DIR}/testzlib.out ${CMAKE_CURRENT_BINARY_DIR}/testzlib.zlb)
+    set_tests_properties(zlib_ada_cleanup PROPERTIES FIXTURES_CLEANUP zlib_ada_cleanup)
+endif(ZLIB_ADA_BUILD_TESTING)

vendor/tcl/compat/zlib/contrib/ada/buffer_demo.adb

@@ -0,0 +1,106 @@
+----------------------------------------------------------------
+--  ZLib for Ada thick binding.                               --
+--                                                            --
+--  Copyright (C) 2002-2004 Dmitriy Anisimkov                 --
+--                                                            --
+--  Open source license information is in the zlib.ads file.  --
+----------------------------------------------------------------
+--
+--  $Id: buffer_demo.adb,v 1.3 2004/09/06 06:55:35 vagul Exp $
+
+--  This demo program provided by Dr Steve Sangwine <sjs@essex.ac.uk>
+--
+--  Demonstration of a problem with Zlib-Ada (already fixed) when a buffer
+--  of exactly the correct size is used for decompressed data, and the last
+--  few bytes passed in to Zlib are checksum bytes.
+
+--  This program compresses a string of text, and then decompresses the
+--  compressed text into a buffer of the same size as the original text.
+
+with Ada.Streams; use Ada.Streams;
+with Ada.Text_IO;
+
+with ZLib; use ZLib;
+
+procedure Buffer_Demo is
+   EOL  : Character renames ASCII.LF;
+   Text : constant String
+     := "Four score and seven years ago our fathers brought forth," & EOL &
+        "upon this continent, a new nation, conceived in liberty," & EOL &
+        "and dedicated to the proposition that `all men are created equal'.";
+
+   Source : Stream_Element_Array (1 .. Text'Length);
+   for Source'Address use Text'Address;
+
+begin
+   Ada.Text_IO.Put (Text);
+   Ada.Text_IO.New_Line;
+   Ada.Text_IO.Put_Line
+     ("Uncompressed size : " & Positive'Image (Text'Length) & " bytes");
+
+   declare
+      Compressed_Data : Stream_Element_Array (1 .. Text'Length);
+      L               : Stream_Element_Offset;
+   begin
+      Compress : declare
+         Compressor : Filter_Type;
+         I : Stream_Element_Offset;
+      begin
+         Deflate_Init (Compressor);
+
+         --  Compress the whole of T at once.
+
+         Translate (Compressor, Source, I, Compressed_Data, L, Finish);
+         pragma Assert (I = Source'Last);
+
+         Close (Compressor);
+
+         Ada.Text_IO.Put_Line
+           ("Compressed size :   "
+            & Stream_Element_Offset'Image (L) & " bytes");
+      end Compress;
+
+      --  Now we decompress the data, passing short blocks of data to Zlib
+      --  (because this demonstrates the problem - the last block passed will
+      --  contain checksum information and there will be no output, only a
+      --  check inside Zlib that the checksum is correct).
+
+      Decompress : declare
+         Decompressor : Filter_Type;
+
+         Uncompressed_Data : Stream_Element_Array (1 .. Text'Length);
+
+         Block_Size : constant := 4;
+         --  This makes sure that the last block contains
+         --  only Adler checksum data.
+
+         P : Stream_Element_Offset := Compressed_Data'First - 1;
+         O : Stream_Element_Offset;
+      begin
+         Inflate_Init (Decompressor);
+
+         loop
+            Translate
+              (Decompressor,
+               Compressed_Data
+                 (P + 1 .. Stream_Element_Offset'Min (P + Block_Size, L)),
+               P,
+               Uncompressed_Data
+                 (Total_Out (Decompressor) + 1 .. Uncompressed_Data'Last),
+               O,
+               No_Flush);
+
+               Ada.Text_IO.Put_Line
+                 ("Total in : " & Count'Image (Total_In (Decompressor)) &
+                  ", out : " & Count'Image (Total_Out (Decompressor)));
+
+               exit when P = L;
+         end loop;
+
+         Ada.Text_IO.New_Line;
+         Ada.Text_IO.Put_Line
+           ("Decompressed text matches original text : "
+             & Boolean'Image (Uncompressed_Data = Source));
+      end Decompress;
+   end;
+end Buffer_Demo;

vendor/tcl/compat/zlib/contrib/ada/cmake/Modules/CMakeADACompiler.cmake.in

@@ -0,0 +1,23 @@
+set(CMAKE_ADA_COMPILER "@CMAKE_ADA_COMPILER@")
+set(CMAKE_ADA_COMPILER_ARG1 "@CMAKE_ADA_COMPILER_ARG1@")
+set(CMAKE_ADA_COMPILER_ID "@CMAKE_ADA_COMPILER_ID@")
+set(CMAKE_ADA_COMPILER_VERSION "@CMAKE_ADA_COMPILER_VERSION@")
+set(CMAKE_ADA_PLATFORM_ID "@CMAKE_ADA_PLATFORM_ID@")
+set(CMAKE_AR "@CMAKE_AR@")
+#set(CMAKE_RANLIB "@CMAKE_RANLIB@")
+#set(CMAKE_LINKER "@CMAKE_LINKER@")
+set(CMAKE_ADA_COMPILER_LOADED TRUE)
+set(CMAKE_ADA_COMPILER_WORKS @CMAKE_ADA_COMPILER_WORKS@)
+#set(CMAKE_ADA_ABI_COMPILED @CMAKE_ADA_ABI_COMPILED@)
+
+set(CMAKE_ADA_COMPILER_ENV_VAR "ADA")
+
+set(CMAKE_ADA_COMPILER_ID_RUN TRUE)
+set(CMAKE_ADA_SOURCE_FILE_EXTENSIONS adb;ADB)
+set(CMAKE_ADA_IGNORE_EXTENSIONS ;o;O;obj;OBJ;ali)
+
+set(CMAKE_ADA_BINDER_HELPER "@CMAKE_ADA_BINDER_HELPER@")
+set(CMAKE_ADA_COMPILER_HELPER "@CMAKE_ADA_COMPILER_HELPER@")
+set(CMAKE_ADA_EXE_LINK_HELPER "@CMAKE_ADA_EXE_LINK_HELPER@")
+set(CMAKE_ADA_SHARED_LINK_HELPER "@CMAKE_ADA_SHARED_LINK_HELPER@")
+set(CMAKE_ADA_STATIC_LINK_HELPER "@CMAKE_ADA_STATIC_LINK_HELPER@")

vendor/tcl/compat/zlib/contrib/ada/cmake/Modules/CMakeADAInformation.cmake

@@ -0,0 +1,133 @@
+include(CMakeLanguageInformation)
+
+set(CMAKE_ADA_OUTPUT_EXTENSION .o)
+set(CMAKE_ADA_OUTPUT_EXTENSION_REPLACE TRUE)
+
+if(CMAKE_USER_MAKE_RULES_OVERRIDE)
+    include(${CMAKE_USER_MAKE_RULES_OVERRIDE} RESULT_VARIABLE _override)
+    set(CMAKE_USER_MAKE_RULES_OVERRIDE "${_override}")
+endif(CMAKE_USER_MAKE_RULES_OVERRIDE)
+
+
+if(CMAKE_USER_MAKE_RULES_OVERRIDE_ADA)
+    include(${CMAKE_USER_MAKE_RULES_OVERRIDE_ADA} RESULT_VARIABLE _override)
+    set(CMAKE_USER_MAKE_RULES_OVERRIDE_ADA "${_override}")
+endif(CMAKE_USER_MAKE_RULES_OVERRIDE_ADA)
+
+set(CMAKE_ADA_FLAGS_INIT "$ENV{ADAFLAGS} ${CMAKE_ADA_FLAGS_INIT}")
+
+string(APPEND CMAKE_ADA_FLAGS_INIT " ")
+string(APPEND CMAKE_ADA_FLAGS_DEBUG_INIT " -g")
+string(APPEND CMAKE_ADA_FLAGS_MINSIZEREL_INIT " -Os")
+string(APPEND CMAKE_ADA_FLAGS_RELEASE_INIT " -O3")
+string(APPEND CMAKE_ADA_FLAGS_RELWITHDEBINFO_INIT " -O2 -g")
+
+cmake_initialize_per_config_variable(CMAKE_ADA_FLAGS "Flags used by the Ada compiler")
+
+if(CMAKE_ADA_STANDARD_LIBRARIES_INIT)
+    set(CMAKE_ADA_STANDARD_LIBRARIES
+        "${CMAKE_ADA_STANDARD_LIBRARIES_INIT}"
+        CACHE
+        STRING "Libraries linked by default with all Ada applications.")
+    mark_as_advanced(CMAKE_ADA_STANDARD_LIBRARIES)
+endif(CMAKE_ADA_STANDARD_LIBRARIES_INIT)
+
+if(NOT CMAKE_ADA_COMPILER_LAUNCHER AND DEFINED ENV{CMAKE_ADA_COMPILER_LAUNCHER})
+    set(CMAKE_ADA_COMPILER_LAUNCHER
+        "$ENV{CMAKE_ADA_COMPILER_LAUNCHER}"
+        CACHE
+        STRING "Compiler launcher for Ada.")
+endif(NOT CMAKE_ADA_COMPILER_LAUNCHER AND DEFINED ENV{CMAKE_ADA_COMPILER_LAUNCHER})
+
+if(NOT CMAKE_ADA_LINKER_LAUNCHER AND DEFINED ENV{CMAKE_ADA_LINKER_LAUNCHER})
+    set(CMAKE_ADA_LINKER_LAUNCHER
+        "$ENV{CMAKE_ADA_LINKER_LAUNCHER}"
+        CACHE
+        STRING "Linker launcher for Ada.")
+endif(NOT CMAKE_ADA_LINKER_LAUNCHER AND DEFINED ENV{CMAKE_ADA_LINKER_LAUNCHER})
+
+include(CMakeCommonLanguageInclude)
+_cmake_common_language_platform_flags(ADA)
+
+if(NOT CMAKE_ADA_CREATE_SHARED_LIBRARY)
+    set(CMAKE_ADA_CREATE_SHARED_LIBRARY
+        "${CMAKE_ADA_BINDER_HELPER} <CMAKE_ADA_COMPILER> <OBJECTS> FLAGS <FLAGS> <LINK_FLAGS>"
+        "${CMAKE_ADA_SHARED_LINK_HELPER} <CMAKE_ADA_COMPILER> <TARGET> <OBJECTS> <LINK_LIBRARIES>")
+endif(NOT CMAKE_ADA_CREATE_SHARED_LIBRARY)
+
+if(NOT CMAKE_ADA_CREATE_STATIC_LIBRARY)
+    set(CMAKE_ADA_CREATE_STATIC_LIBRARY
+        "${CMAKE_ADA_STATIC_LINK_HELPER} ${CMAKE_AR} <TARGET> <OBJECTS>")
+endif(NOT CMAKE_ADA_CREATE_STATIC_LIBRARY)
+
+if(NOT CMAKE_ADA_COMPILE_OBJECT)
+    set(CMAKE_ADA_COMPILE_OBJECT
+        "${CMAKE_ADA_COMPILER_HELPER} <CMAKE_ADA_COMPILER> <OBJECT_DIR> <SOURCE> <FLAGS>")
+endif(NOT CMAKE_ADA_COMPILE_OBJECT)
+
+if(NOT CMAKE_ADA_LINK_EXECUTABLE)
+    set(CMAKE_ADA_LINK_EXECUTABLE
+        "${CMAKE_ADA_BINDER_HELPER} <CMAKE_ADA_COMPILER> <OBJECTS> FLAGS <FLAGS> <LINK_FLAGS>"
+        "${CMAKE_ADA_EXE_LINK_HELPER} <CMAKE_ADA_COMPILER> <TARGET> <FLAGS> <CMAKE_C_LINK_FLAGS> <LINK_FLAGS> OBJ <OBJECTS> LIBS <LINK_LIBRARIES>")
+endif(NOT CMAKE_ADA_LINK_EXECUTABLE)
+
+function(ada_add_executable)
+    if(ARGC GREATER 1)
+        math(EXPR last_index "${ARGC} - 1")
+        foreach(source RANGE 1 ${last_index})
+            list(APPEND SOURCES ${ARGV${source}})
+            string(REPLACE ".adb" "" ali "${ARGV${source}}")
+            set(clean_file "CMakeFiles/${ARGV0}.dir/${ali}.ali")
+            list(APPEND CLEAN_FILES ${clean_file})
+            list(APPEND CLEAN_FILES b~${ali}.adb)
+            list(APPEND CLEAN_FILES b~${ali}.ads)
+            list(APPEND CLEAN_FILES b~${ali}.ali)
+            list(APPEND CLEAN_FILES b~${ali}.o)
+        endforeach(source RANGE 1 ${ARGC})
+
+        add_executable(${ARGV0} ${ARGV1} ${SOURCES})
+
+        set_target_properties(${ARGV0}
+            PROPERTIES
+                ADDITIONAL_CLEAN_FILES "${CLEAN_FILES}")
+    endif(ARGC GREATER 1)
+endfunction(ada_add_executable)
+
+function(ada_add_library)
+    if(ARGC GREATER 2)
+        math(EXPR last_index "${ARGC} - 1")
+        foreach(source RANGE 2 ${last_index})
+            list(APPEND SOURCES ${ARGV${source}})
+            string(REPLACE ".adb" "" ali "${ARGV${source}}")
+            set(clean_file "CMakeFiles/${ARGV0}.dir/${ali}.ali")
+            list(APPEND CLEAN_FILES ${clean_file})
+            list(APPEND CLEAN_FILES b~${ali}.adb)
+            list(APPEND CLEAN_FILES b~${ali}.ads)
+            list(APPEND CLEAN_FILES b~${ali}.ali)
+            list(APPEND CLEAN_FILES b~${ali}.o)
+        endforeach(source RANGE 2 ${ARGC})
+
+        add_library(${ARGV0} ${ARGV1} ${SOURCES})
+
+        set_target_properties(${ARGV0}
+            PROPERTIES
+                ADDITIONAL_CLEAN_FILES "${CLEAN_FILES};dummylib.adb;dummylib.ali;dummylib.o"
+                ALI_FLAG "-aO${CMAKE_CURRENT_BINARY_DIR}/CMakeFiles/${ARGV0}.dir/")
+    endif(ARGC GREATER 2)
+endfunction(ada_add_library)
+
+function(ada_find_ali)
+    get_target_property(link_libs ${ARGV0} LINK_LIBRARIES)
+
+    foreach(lib IN LISTS link_libs)
+        get_target_property(ali ${lib} ALI_FLAG)
+        string(APPEND FLAGS ${ali} " ")
+        unset(ali)
+    endforeach(lib IN LISTS link_libs)
+
+    set_target_properties(${ARGV0}
+        PROPERTIES
+            LINK_FLAGS ${FLAGS})
+endfunction(ada_find_ali)
+
+set(CMAKE_ADA_INFORMATION_LOADED TRUE)

vendor/tcl/compat/zlib/contrib/ada/cmake/Modules/CMakeDetermineADACompiler.cmake

@@ -0,0 +1,33 @@
+include(${CMAKE_ROOT}/Modules/CMakeDetermineCompiler.cmake)
+
+# Load system-specific compiler preferences for this language.
+include(Platform/${CMAKE_SYSTEM_NAME}-Determine-Ada OPTIONAL)
+include(Platform/${CMAKE_SYSTEM_NAME}-Ada OPTIONAL)
+
+if(NOT CMAKE_ADA_COMPILER_NAMES)
+    set(CMAKE_ADA_COMPILER_NAMES gnat)
+
+    foreach(ver RANGE 11 99)
+        list(APPEND CMAKE_ADA_COMPILER_NAMES gnat-${ver})
+    endforeach(ver RANGE 11 99)
+endif(NOT CMAKE_ADA_COMPILER_NAMES)
+
+if(NOT CMAKE_ADA_COMPILER)
+    set(CMAKE_ADA_COMPILER_INIT NOTFOUND)
+    _cmake_find_compiler(ADA)
+else(NOT CMAKE_REAL_ADA_COMPILER)
+    _cmake_find_compiler_path(ADA)
+endif(NOT CMAKE_ADA_COMPILER)
+
+mark_as_advanced(CMAKE_ADA_COMPILER)
+set(CMAKE_ADA_COMPILER_ID "GNU")
+set(CMAKE_ADA_BINDER_HELPER "${CMAKE_COMMAND} -P ${CMAKE_CURRENT_SOURCE_DIR}/cmake/binder_helper.cmake")
+set(CMAKE_ADA_COMPILER_HELPER "${CMAKE_COMMAND} -P ${CMAKE_CURRENT_SOURCE_DIR}/cmake/compile_helper.cmake")
+set(CMAKE_ADA_EXE_LINK_HELPER "${CMAKE_COMMAND} -P ${CMAKE_CURRENT_SOURCE_DIR}/cmake/exe_link_helper.cmake")
+set(CMAKE_ADA_SHARED_LINK_HELPER "${CMAKE_COMMAND} -P ${CMAKE_CURRENT_SOURCE_DIR}/cmake/shared_link_helper.cmake")
+set(CMAKE_ADA_STATIC_LINK_HELPER "${CMAKE_COMMAND} -P ${CMAKE_CURRENT_SOURCE_DIR}/cmake/static_link_helper.cmake")
+
+configure_file(
+    ${CMAKE_CURRENT_SOURCE_DIR}/cmake/Modules/CMakeADACompiler.cmake.in
+    ${CMAKE_PLATFORM_INFO_DIR}/CMakeADACompiler.cmake
+    @ONLY)

vendor/tcl/compat/zlib/contrib/ada/cmake/Modules/CMakeTestADACompiler.cmake

@@ -0,0 +1,46 @@
+include(CMakeTestCompilerCommon)
+unset(CMAKE_ADA_COMPILER_WORKS CACHE)
+
+if(NOT CMAKE_ADA_COMPILER_WORKS)
+    PrintTestCompilerStatus("ADA" "")
+    set(_ADA_TEST_FILE "${CMAKE_BINARY_DIR}/${CMAKE_FILES_DIRECTORY}/CMakeTmp/main.adb")
+
+    file(WRITE ${_ADA_TEST_FILE}
+        "with Ada.Text_IO; use Ada.Text_IO;\n"
+        "\n"
+        "procedure main is\n"
+        "begin\n"
+        "Put_Line(\"Hello, World!\");\n"
+        "end Main;\n")
+
+    try_compile(CMAKE_ADA_COMPILER_WORKS ${CMAKE_BINARY_DIR}
+                ${_ADA_TEST_FILE}
+                OUTPUT_VARIABLE __CMAKE_ADA_COMPILER_OUTPUT)
+
+    set(CMAKE_ADA_COMPILER_WORKS ${CMAKE_ADA_COMPILER_WORKS})
+    unset(CMAKE_ADA_COMPILER_WORKS CACHE)
+    set(ADA_TEST_WAS_RUN TRUE)
+endif(NOT CMAKE_ADA_COMPILER_WORKS)
+
+if(NOT CMAKE_ADA_COMPILER_WORKS)
+    PrintTestCompilerStatus("ADA" " -- broken")
+
+    file(APPEND ${CMAKE_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/CMakeError.log
+        "Determining if the Ada compiler works failed with "
+        "the following output:\n${__CMAKE_ADA_COMPILER_OUTPUT}\n\n")
+
+    message(FATAL_ERROR "The Ada compiler \"${CMAKE_ADA_COMPILER}\" "
+        "is not able to compile a simple test program.\nIt fails "
+        "with the following output:\n ${__CMAKE_ADA_COMPILER_OUTPUT}\n\n"
+        "CMake will not be able to correctly generate this project.")
+else(NOT CMAKE_ADA_COMPILER_WORKS)
+    if(ADA_TEST_WAS_RUN)
+        PrintTestCompilerStatus("ADA" " -- works")
+
+        file(APPEND ${CMAKE_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/CMakeOutput.log
+            "Determining if the Ada compiler works passed with "
+            "the following output:\n${__CMAKE_ADA_COMPILER_OUTPUT}\n\n")
+    endif(ADA_TEST_WAS_RUN)
+endif(NOT CMAKE_ADA_COMPILER_WORKS)
+
+unset(__CMAKE_ADA_COMPILER_OUTPUT)

vendor/tcl/compat/zlib/contrib/ada/cmake/binder_helper.cmake

@@ -0,0 +1,47 @@
+#CMAKE_ARGV0 = /path/to/cmake
+#CMAKE_ARGV1 = -P
+#CMAKE_ARGV2 = path/to/this/file
+#CMAKE_ARGV3 = binder
+#CMAKE_ARGV4 = ali
+
+if(NOT CMAKE_ARGV3)
+    message(FATAL_ERROR "binder not set")
+endif(NOT CMAKE_ARGV3)
+
+string(REPLACE ".o" ".ali" ALI ${CMAKE_ARGV4})
+
+set (REACHED_FLAGS FALSE)
+#iterate over additional objects, only the main one is needed
+foreach(arg RANGE 5 ${CMAKE_ARGC})
+    if(CMAKE_ARGV${arg} STREQUAL FLAGS)
+        set(REACHED_FLAGS TRUE)
+        continue()
+    endif(CMAKE_ARGV${arg} STREQUAL FLAGS)
+
+    string(SUBSTRING "${CMAKE_ARGV${arg}}" 0 2 start)
+
+    if(start STREQUAL "-O")
+        continue()
+    endif(start STREQUAL "-O")
+
+    if(REACHED_FLAGS)
+        list(APPEND FLAGS ${CMAKE_ARGV${arg}})
+    endif(REACHED_FLAGS)
+endforeach(arg RANGE 5 CMAKE_ARGC)
+
+#first see if there is a main function
+execute_process(COMMAND ${CMAKE_ARGV3} bind ${ALI} ${FLAGS}
+                RESULT_VARIABLE MAIN_RESULT
+                OUTPUT_VARIABLE dont_care
+                ERROR_VARIABLE ERROR)
+
+if(MAIN_RESULT)
+    execute_process(COMMAND ${CMAKE_ARGV3} bind -n ${ALI} ${FLAGS}
+                    RESULT_VARIABLE RESULT
+                    OUTPUT_VARIABLE dont_care
+                    ERROR_VARIABLE ERROR)
+endif(MAIN_RESULT)
+
+if(RESULT)
+    message(FATAL_ERROR ${RESULT} ${ERROR})
+endif(RESULT)

vendor/tcl/compat/zlib/contrib/ada/cmake/compile_helper.cmake

@@ -0,0 +1,32 @@
+#CMAKE_ARGV0 = /path/to/cmake
+#CMAKE_ARGV1 = -P
+#CMAKE_ARGV2 = path/to/this/file
+#CMAKE_ARGV3 = compiler
+#CMAKE_ARGV4 = OBJECT-DIR
+#CMAKE_ARGV5 = source-file
+
+if(NOT CMAKE_ARGV3)
+    message(FATAL_ERROR "compiler not set")
+endif(NOT CMAKE_ARGV3)
+
+if(NOT CMAKE_ARGV4)
+    message(FATAL_ERROR "object dir not set")
+endif(NOT CMAKE_ARGV4)
+
+if(NOT CMAKE_ARGV5)
+    message(FATAL_ERROR "source not set")
+endif(NOT CMAKE_ARGV5)
+
+foreach(arg RANGE 6 ${CMAKE_ARGC})
+    list(APPEND FLAGS "${CMAKE_ARGV${arg}}")
+endforeach(arg RANGE 6 ${CMAKE_ARGC})
+
+execute_process(COMMAND ${CMAKE_ARGV3} compile ${FLAGS} ${CMAKE_ARGV5}
+                WORKING_DIRECTORY ${CMAKE_ARGV4}
+                RESULT_VARIABLE RESULT
+                OUTPUT_VARIABLE dont_care
+                ERROR_VARIABLE ERROR)
+
+if(RESULT)
+    message(FATAL_ERROR ${RESULT} ${ERROR})
+endif(RESULT)

vendor/tcl/compat/zlib/contrib/ada/cmake/exe_link_helper.cmake

@@ -0,0 +1,53 @@
+#CMAKE_ARGV0 = /path/to/cmake
+#CMAKE_ARGV1 = -P
+#CMAKE_ARGV2 = path/to/this/file
+#CMAKE_ARGV3 = linker
+#CMAKE_ARGV4 = output-name
+#CMAKE_ARGV5...CMAKE_AGVN = OBJECTS
+#CMAKE_ARGVN+1 = LIBS
+#CMAKE_ARGVN+2...CMAKE_ARGVM libraries
+
+if(NOT CMAKE_ARGV3)
+    message(FATAL_ERROR "linker not set")
+endif(NOT CMAKE_ARGV3)
+
+set(REACHED_LIBS FALSE)
+set(REACHED_OBJ FALSE)
+foreach(arg RANGE 5 ${CMAKE_ARGC})
+    if(CMAKE_ARGV${arg} STREQUAL LIBS)
+        set(REACHED_LIBS TRUE)
+        set(REACHED_OBJ FALSE)
+        continue()
+    endif(CMAKE_ARGV${arg} STREQUAL LIBS)
+
+    if(CMAKE_ARGV${arg} STREQUAL OBJ)
+        set(REACHED_LIBS FALSE)
+        set(REACHED_OBJ TRUE)
+        continue()
+    endif(CMAKE_ARGV${arg} STREQUAL OBJ)
+
+    if(CMAKE_ARGC EQUAL arg)
+        continue()
+    endif(CMAKE_ARGC EQUAL arg)
+
+    if(REACHED_LIBS)
+        list(APPEND LIBS "${CMAKE_ARGV${arg}}")
+    elseif(REACHED_OBJ AND NOT ALI)
+        string(REPLACE ".o" ".ali" ALI "${CMAKE_ARGV${arg}}")
+    else(REACHED_LIBS)
+        string(SUBSTRING "${CMAKE_ARGV${arg}}" 0 3 start)
+
+        if(NOT start STREQUAL -aO)
+            list(APPEND FLAGS "${CMAKE_ARGV${arg}}")
+        endif(NOT start STREQUAL -aO)
+    endif(REACHED_LIBS)
+endforeach(arg RANGE 5 ${CMAKE_ARGC})
+
+execute_process(COMMAND ${CMAKE_ARGV3} link ${ALI} -o ${CMAKE_ARGV4} ${FLAGS} ${OTHER_OBJECTS} ${LIBS}
+                RESULT_VARIABLE RESULT
+                OUTPUT_VARIABLE dont_care
+                ERROR_VARIABLE ERROR)
+
+if(RESULT)
+    message(FATAL_ERROR ${RESULT} ${ERROR})
+endif(RESULT)

vendor/tcl/compat/zlib/contrib/ada/cmake/shared_link_helper.cmake

@@ -0,0 +1,52 @@
+#CMAKE_ARGV0 = /path/to/cmake
+#CMAKE_ARGV1 = -P
+#CMAKE_ARGV2 = path/to/this/file
+#CMAKE_ARGV3 = linker
+#CMAKE_ARGV4 = output-name
+#CMAKE_ARGV5...CMAKE_AGVN = OBJECTS
+#CMAKE_ARGVN+1 = LIBS
+#CMAKE_ARGVN+2...CMAKE_ARGVM libraries
+
+if(NOT CMAKE_ARGV3)
+    message(FATAL_ERROR "linker not set")
+endif(NOT CMAKE_ARGV3)
+
+set(REACHED_FILES FALSE)
+foreach(arg RANGE 5 ${CMAKE_ARGC})
+    if(CMAKE_ARGV${arg} STREQUAL "LIBS")
+        set(REACHED_FILES TRUE)
+        continue()
+    endif(CMAKE_ARGV${arg} STREQUAL "LIBS")
+
+    if(CMAKE_ARGC EQUAL arg)
+        continue()
+    endif(CMAKE_ARGC EQUAL arg)
+
+    if(REACHED_LIBS)
+        list(APPEND LIBS "${CMAKE_ARGV${arg}} ")
+    else(REACHED_LIBS)
+        list(APPEND OBJECT_FILES "${CMAKE_ARGV${arg}}")
+    endif(REACHED_LIBS)
+endforeach(arg RANGE 5 ${CMAKE_ARGC})
+
+file(WRITE dummylib.adb
+    "procedure dummylib is\n"
+    "begin\n"
+    "   null;\n"
+    "end;\n")
+
+execute_process(COMMAND ${CMAKE_ARGV3} compile -fPIC dummylib.adb
+                OUTPUT_VARIABLE dont_care
+                ERROR_VARIABLE ERROR)
+execute_process(COMMAND ${CMAKE_ARGV3} bind -n dummylib.ali
+                OUTPUT_VARIABLE dont_care
+                ERROR_VARIABLE ERROR)
+
+execute_process(COMMAND ${CMAKE_ARGV3} link -shared dummylib.ali -o ${CMAKE_ARGV4} ${OBJECT_FILES} ${LIBS}
+                RESULT_VARIABLE RESULT
+                OUTPUT_VARIABLE dont_care
+                ERROR_VARIABLE ERROR)
+
+if(RESULT)
+    message(FATAL_ERROR ${RESULT} ${ERROR})
+endif(RESULT)

vendor/tcl/compat/zlib/contrib/ada/cmake/static_link_helper.cmake

@@ -0,0 +1,25 @@
+#CMAKE_ARGV0 = /path/to/cmake
+#CMAKE_ARGV1 = -P
+#CMAKE_ARGV2 = path/to/this/file
+#CMAKE_ARGV3 = path/to/ar
+#CMAKE_ARGV4 = output-name
+#CMAKE_ARGV5...CMAKE_AGVN = OBJECTS
+
+if(NOT CMAKE_ARGV3)
+    message(FATAL_ERROR "linker not set")
+endif(NOT CMAKE_ARGV3)
+
+foreach(arg RANGE 5 ${CMAKE_ARGC})
+    if(NOT CMAKE_ARGC EQUAL arg)
+        list(APPEND OBJECT_FILES "${CMAKE_ARGV${arg}}")
+    endif(NOT CMAKE_ARGC EQUAL arg)
+endforeach(arg RANGE 6 ${CMAKE_ARGC})
+
+execute_process(COMMAND ${CMAKE_ARGV3} rcs ${CMAKE_ARGV4} ${OBJECT_FILES}
+                RESULT_VARIABLE RESULT
+                OUTPUT_VARIABLE dont_care
+                ERROR_VARIABLE ERROR)
+
+if(RESULT)
+    message(FATAL_ERROR ${RESULT} ${ERROR})
+endif(RESULT)

vendor/tcl/compat/zlib/contrib/ada/mtest.adb

@@ -0,0 +1,156 @@
+----------------------------------------------------------------
+--  ZLib for Ada thick binding.                               --
+--                                                            --
+--  Copyright (C) 2002-2003 Dmitriy Anisimkov                 --
+--                                                            --
+--  Open source license information is in the zlib.ads file.  --
+----------------------------------------------------------------
+--  Continuous test for ZLib multithreading. If the test would fail
+--  we should provide thread safe allocation routines for the Z_Stream.
+--
+--  $Id: mtest.adb,v 1.4 2004/07/23 07:49:54 vagul Exp $
+
+with ZLib;
+with Ada.Streams;
+with Ada.Numerics.Discrete_Random;
+with Ada.Text_IO;
+with Ada.Exceptions;
+with Ada.Task_Identification;
+
+procedure MTest is
+   use Ada.Streams;
+   use ZLib;
+
+   Stop : Boolean := False;
+
+   pragma Atomic (Stop);
+
+   subtype Visible_Symbols is Stream_Element range 16#20# .. 16#7E#;
+
+   package Random_Elements is
+      new Ada.Numerics.Discrete_Random (Visible_Symbols);
+
+   task type Test_Task;
+
+   task body Test_Task is
+      Buffer : Stream_Element_Array (1 .. 100_000);
+      Gen : Random_Elements.Generator;
+
+      Buffer_First  : Stream_Element_Offset;
+      Compare_First : Stream_Element_Offset;
+
+      Deflate : Filter_Type;
+      Inflate : Filter_Type;
+
+      procedure Further (Item : in Stream_Element_Array);
+
+      procedure Read_Buffer
+        (Item : out Ada.Streams.Stream_Element_Array;
+         Last : out Ada.Streams.Stream_Element_Offset);
+
+      -------------
+      -- Further --
+      -------------
+
+      procedure Further (Item : in Stream_Element_Array) is
+
+         procedure Compare (Item : in Stream_Element_Array);
+
+         -------------
+         -- Compare --
+         -------------
+
+         procedure Compare (Item : in Stream_Element_Array) is
+            Next_First : Stream_Element_Offset := Compare_First + Item'Length;
+         begin
+            if Buffer (Compare_First .. Next_First - 1) /= Item then
+               raise Program_Error;
+            end if;
+
+            Compare_First := Next_First;
+         end Compare;
+
+         procedure Compare_Write is new ZLib.Write (Write => Compare);
+      begin
+         Compare_Write (Inflate, Item, No_Flush);
+      end Further;
+
+      -----------------
+      -- Read_Buffer --
+      -----------------
+
+      procedure Read_Buffer
+        (Item : out Ada.Streams.Stream_Element_Array;
+         Last : out Ada.Streams.Stream_Element_Offset)
+      is
+         Buff_Diff   : Stream_Element_Offset := Buffer'Last - Buffer_First;
+         Next_First : Stream_Element_Offset;
+      begin
+         if Item'Length <= Buff_Diff then
+            Last := Item'Last;
+
+            Next_First := Buffer_First + Item'Length;
+
+            Item := Buffer (Buffer_First .. Next_First - 1);
+
+            Buffer_First := Next_First;
+         else
+            Last := Item'First + Buff_Diff;
+            Item (Item'First .. Last) := Buffer (Buffer_First .. Buffer'Last);
+            Buffer_First := Buffer'Last + 1;
+         end if;
+      end Read_Buffer;
+
+      procedure Translate is new Generic_Translate
+                                   (Data_In  => Read_Buffer,
+                                    Data_Out => Further);
+
+   begin
+      Random_Elements.Reset (Gen);
+
+      Buffer := (others => 20);
+
+      Main : loop
+         for J in Buffer'Range loop
+            Buffer (J) := Random_Elements.Random (Gen);
+
+            Deflate_Init (Deflate);
+            Inflate_Init (Inflate);
+
+            Buffer_First  := Buffer'First;
+            Compare_First := Buffer'First;
+
+            Translate (Deflate);
+
+            if Compare_First /= Buffer'Last + 1 then
+               raise Program_Error;
+            end if;
+
+            Ada.Text_IO.Put_Line
+              (Ada.Task_Identification.Image
+                 (Ada.Task_Identification.Current_Task)
+               & Stream_Element_Offset'Image (J)
+               & ZLib.Count'Image (Total_Out (Deflate)));
+
+            Close (Deflate);
+            Close (Inflate);
+
+            exit Main when Stop;
+         end loop;
+      end loop Main;
+   exception
+      when E : others =>
+         Ada.Text_IO.Put_Line (Ada.Exceptions.Exception_Information (E));
+         Stop := True;
+   end Test_Task;
+
+   Test : array (1 .. 4) of Test_Task;
+
+   pragma Unreferenced (Test);
+
+   Dummy : Character;
+
+begin
+   Ada.Text_IO.Get_Immediate (Dummy);
+   Stop := True;
+end MTest;

vendor/tcl/compat/zlib/contrib/ada/read.adb

@@ -0,0 +1,156 @@
+----------------------------------------------------------------
+--  ZLib for Ada thick binding.                               --
+--                                                            --
+--  Copyright (C) 2002-2003 Dmitriy Anisimkov                 --
+--                                                            --
+--  Open source license information is in the zlib.ads file.  --
+----------------------------------------------------------------
+
+--  $Id: read.adb,v 1.8 2004/05/31 10:53:40 vagul Exp $
+
+--  Test/demo program for the generic read interface.
+
+with Ada.Numerics.Discrete_Random;
+with Ada.Streams;
+with Ada.Text_IO;
+
+with ZLib;
+
+procedure Read is
+
+   use Ada.Streams;
+
+   ------------------------------------
+   --  Test configuration parameters --
+   ------------------------------------
+
+   File_Size   : Stream_Element_Offset := 100_000;
+
+   Continuous  : constant Boolean          := False;
+   --  If this constant is True, the test would be repeated again and again,
+   --  with increment File_Size for every iteration.
+
+   Header      : constant ZLib.Header_Type := ZLib.Default;
+   --  Do not use Header other than Default in ZLib versions 1.1.4 and older.
+
+   Init_Random : constant := 8;
+   --  We are using the same random sequence, in case of we catch bug,
+   --  so we would be able to reproduce it.
+
+   -- End --
+
+   Pack_Size : Stream_Element_Offset;
+   Offset    : Stream_Element_Offset;
+
+   Filter     : ZLib.Filter_Type;
+
+   subtype Visible_Symbols
+      is Stream_Element range 16#20# .. 16#7E#;
+
+   package Random_Elements is new
+      Ada.Numerics.Discrete_Random (Visible_Symbols);
+
+   Gen : Random_Elements.Generator;
+   Period  : constant Stream_Element_Offset := 200;
+   --  Period constant variable for random generator not to be very random.
+   --  Bigger period, harder random.
+
+   Read_Buffer : Stream_Element_Array (1 .. 2048);
+   Read_First  : Stream_Element_Offset;
+   Read_Last   : Stream_Element_Offset;
+
+   procedure Reset;
+
+   procedure Read
+     (Item : out Stream_Element_Array;
+      Last : out Stream_Element_Offset);
+   --  this procedure is for generic instantiation of
+   --  ZLib.Read
+   --  reading data from the File_In.
+
+   procedure Read is new ZLib.Read
+                           (Read,
+                            Read_Buffer,
+                            Rest_First => Read_First,
+                            Rest_Last  => Read_Last);
+
+   ----------
+   -- Read --
+   ----------
+
+   procedure Read
+     (Item : out Stream_Element_Array;
+      Last : out Stream_Element_Offset) is
+   begin
+      Last := Stream_Element_Offset'Min
+               (Item'Last,
+                Item'First + File_Size - Offset);
+
+      for J in Item'First .. Last loop
+         if J < Item'First + Period then
+            Item (J) := Random_Elements.Random (Gen);
+         else
+            Item (J) := Item (J - Period);
+         end if;
+
+         Offset   := Offset + 1;
+      end loop;
+   end Read;
+
+   -----------
+   -- Reset --
+   -----------
+
+   procedure Reset is
+   begin
+      Random_Elements.Reset (Gen, Init_Random);
+      Pack_Size := 0;
+      Offset := 1;
+      Read_First := Read_Buffer'Last + 1;
+      Read_Last  := Read_Buffer'Last;
+   end Reset;
+
+begin
+   Ada.Text_IO.Put_Line ("ZLib " & ZLib.Version);
+
+   loop
+      for Level in ZLib.Compression_Level'Range loop
+
+         Ada.Text_IO.Put ("Level ="
+            & ZLib.Compression_Level'Image (Level));
+
+         --  Deflate using generic instantiation.
+
+         ZLib.Deflate_Init
+               (Filter,
+                Level,
+                Header => Header);
+
+         Reset;
+
+         Ada.Text_IO.Put
+           (Stream_Element_Offset'Image (File_Size) & " ->");
+
+         loop
+            declare
+               Buffer : Stream_Element_Array (1 .. 1024);
+               Last   : Stream_Element_Offset;
+            begin
+               Read (Filter, Buffer, Last);
+
+               Pack_Size := Pack_Size + Last - Buffer'First + 1;
+
+               exit when Last < Buffer'Last;
+            end;
+         end loop;
+
+         Ada.Text_IO.Put_Line (Stream_Element_Offset'Image (Pack_Size));
+
+         ZLib.Close (Filter);
+      end loop;
+
+      exit when not Continuous;
+
+      File_Size := File_Size + 1;
+   end loop;
+end Read;

vendor/tcl/compat/zlib/contrib/ada/readme.txt

@@ -0,0 +1,65 @@
+                        ZLib for Ada thick binding (ZLib.Ada)
+                        Release 1.3
+
+ZLib.Ada is a thick binding interface to the popular ZLib data
+compression library, available at https://zlib.net/.
+It provides Ada-style access to the ZLib C library.
+
+
+        Here are the main changes since ZLib.Ada 1.2:
+
+- Attention: ZLib.Read generic routine have a initialization requirement
+  for Read_Last parameter now. It is a bit incompatible with previous version,
+  but extends functionality, we could use new parameters Allow_Read_Some and
+  Flush now.
+
+- Added Is_Open routines to ZLib and ZLib.Streams packages.
+
+- Add pragma Assert to check Stream_Element is 8 bit.
+
+- Fix extraction to buffer with exact known decompressed size. Error reported by
+  Steve Sangwine.
+
+- Fix definition of ULong (changed to unsigned_long), fix regression on 64 bits
+  computers. Patch provided by Pascal Obry.
+
+- Add Status_Error exception definition.
+
+- Add pragma Assertion that Ada.Streams.Stream_Element size is 8 bit.
+
+
+        How to build ZLib.Ada under GNAT
+
+You should have the ZLib library already build on your computer, before
+building ZLib.Ada. Make the directory of ZLib.Ada sources current and
+issue the command:
+
+  gnatmake test -largs -L<directory where libz.a is> -lz
+
+Or use the GNAT project file build for GNAT 3.15 or later:
+
+  gnatmake -Pzlib.gpr -L<directory where libz.a is>
+
+
+        How to build ZLib.Ada under Aonix ObjectAda for Win32 7.2.2
+
+1. Make a project with all *.ads and *.adb files from the distribution.
+2. Build the libz.a library from the ZLib C sources.
+3. Rename libz.a to z.lib.
+4. Add the library z.lib to the project.
+5. Add the libc.lib library from the ObjectAda distribution to the project.
+6. Build the executable using test.adb as a main procedure.
+
+
+        How to use ZLib.Ada
+
+The source files test.adb and read.adb are small demo programs that show
+the main functionality of ZLib.Ada.
+
+The routines from the package specifications are commented.
+
+
+Homepage: https://zlib-ada.sourceforge.net/
+Author: Dmitriy Anisimkov <anisimkov@yahoo.com>
+
+Contributors: Pascal Obry <pascal@obry.org>, Steve Sangwine <sjs@essex.ac.uk>

vendor/tcl/compat/zlib/contrib/ada/test.adb

@@ -0,0 +1,463 @@
+----------------------------------------------------------------
+--  ZLib for Ada thick binding.                               --
+--                                                            --
+--  Copyright (C) 2002-2003 Dmitriy Anisimkov                 --
+--                                                            --
+--  Open source license information is in the zlib.ads file.  --
+----------------------------------------------------------------
+
+--  $Id: test.adb,v 1.17 2003/08/12 12:13:30 vagul Exp $
+
+--  The program has a few aims.
+--  1. Test ZLib.Ada95 thick binding functionality.
+--  2. Show the example of use main functionality of the ZLib.Ada95 binding.
+--  3. Build this program automatically compile all ZLib.Ada95 packages under
+--     GNAT Ada95 compiler.
+
+with ZLib.Streams;
+with Ada.Streams.Stream_IO;
+with Ada.Numerics.Discrete_Random;
+
+with Ada.Text_IO;
+
+with Ada.Calendar;
+
+procedure Test is
+
+   use Ada.Streams;
+   use Stream_IO;
+
+   ------------------------------------
+   --  Test configuration parameters --
+   ------------------------------------
+
+   File_Size   : Count   := 100_000;
+   Continuous  : constant Boolean := False;
+
+   Header      : constant ZLib.Header_Type := ZLib.Default;
+                                              --  ZLib.None;
+                                              --  ZLib.Auto;
+                                              --  ZLib.GZip;
+   --  Do not use Header other then Default in ZLib versions 1.1.4
+   --  and older.
+
+   Strategy    : constant ZLib.Strategy_Type := ZLib.Default_Strategy;
+   Init_Random : constant := 10;
+
+   -- End --
+
+   In_File_Name  : constant String := "testzlib.in";
+   --  Name of the input file
+
+   Z_File_Name   : constant String := "testzlib.zlb";
+   --  Name of the compressed file.
+
+   Out_File_Name : constant String := "testzlib.out";
+   --  Name of the decompressed file.
+
+   File_In   : File_Type;
+   File_Out  : File_Type;
+   File_Back : File_Type;
+   File_Z    : ZLib.Streams.Stream_Type;
+
+   Filter : ZLib.Filter_Type;
+
+   Time_Stamp : Ada.Calendar.Time;
+
+   procedure Generate_File;
+   --  Generate file of specified size with some random data.
+   --  The random data is repeatable, for the good compression.
+
+   procedure Compare_Streams
+     (Left, Right : in out Root_Stream_Type'Class);
+   --  The procedure comparing data in 2 streams.
+   --  It is for compare data before and after compression/decompression.
+
+   procedure Compare_Files (Left, Right : String);
+   --  Compare files. Based on the Compare_Streams.
+
+   procedure Copy_Streams
+     (Source, Target : in out Root_Stream_Type'Class;
+      Buffer_Size    : in     Stream_Element_Offset := 1024);
+   --  Copying data from one stream to another. It is for test stream
+   --  interface of the library.
+
+   procedure Data_In
+     (Item : out Stream_Element_Array;
+      Last : out Stream_Element_Offset);
+   --  this procedure is for generic instantiation of
+   --  ZLib.Generic_Translate.
+   --  reading data from the File_In.
+
+   procedure Data_Out (Item : in Stream_Element_Array);
+   --  this procedure is for generic instantiation of
+   --  ZLib.Generic_Translate.
+   --  writing data to the File_Out.
+
+   procedure Stamp;
+   --  Store the timestamp to the local variable.
+
+   procedure Print_Statistic (Msg : String; Data_Size : ZLib.Count);
+   --  Print the time statistic with the message.
+
+   procedure Translate is new ZLib.Generic_Translate
+                                (Data_In  => Data_In,
+                                 Data_Out => Data_Out);
+   --  This procedure is moving data from File_In to File_Out
+   --  with compression or decompression, depend on initialization of
+   --  Filter parameter.
+
+   -------------------
+   -- Compare_Files --
+   -------------------
+
+   procedure Compare_Files (Left, Right : String) is
+      Left_File, Right_File : File_Type;
+   begin
+      Open (Left_File, In_File, Left);
+      Open (Right_File, In_File, Right);
+      Compare_Streams (Stream (Left_File).all, Stream (Right_File).all);
+      Close (Left_File);
+      Close (Right_File);
+   end Compare_Files;
+
+   ---------------------
+   -- Compare_Streams --
+   ---------------------
+
+   procedure Compare_Streams
+     (Left, Right : in out Ada.Streams.Root_Stream_Type'Class)
+   is
+      Left_Buffer, Right_Buffer : Stream_Element_Array (0 .. 16#FFF#);
+      Left_Last, Right_Last : Stream_Element_Offset;
+   begin
+      loop
+         Read (Left, Left_Buffer, Left_Last);
+         Read (Right, Right_Buffer, Right_Last);
+
+         if Left_Last /= Right_Last then
+            Ada.Text_IO.Put_Line ("Compare error :"
+              & Stream_Element_Offset'Image (Left_Last)
+              & " /= "
+              & Stream_Element_Offset'Image (Right_Last));
+
+            raise Constraint_Error;
+
+         elsif Left_Buffer (0 .. Left_Last)
+               /= Right_Buffer (0 .. Right_Last)
+         then
+            Ada.Text_IO.Put_Line ("ERROR: IN and OUT files is not equal.");
+            raise Constraint_Error;
+
+         end if;
+
+         exit when Left_Last < Left_Buffer'Last;
+      end loop;
+   end Compare_Streams;
+
+   ------------------
+   -- Copy_Streams --
+   ------------------
+
+   procedure Copy_Streams
+     (Source, Target : in out Ada.Streams.Root_Stream_Type'Class;
+      Buffer_Size    : in     Stream_Element_Offset := 1024)
+   is
+      Buffer : Stream_Element_Array (1 .. Buffer_Size);
+      Last   : Stream_Element_Offset;
+   begin
+      loop
+         Read  (Source, Buffer, Last);
+         Write (Target, Buffer (1 .. Last));
+
+         exit when Last < Buffer'Last;
+      end loop;
+   end Copy_Streams;
+
+   -------------
+   -- Data_In --
+   -------------
+
+   procedure Data_In
+     (Item : out Stream_Element_Array;
+      Last : out Stream_Element_Offset) is
+   begin
+      Read (File_In, Item, Last);
+   end Data_In;
+
+   --------------
+   -- Data_Out --
+   --------------
+
+   procedure Data_Out (Item : in Stream_Element_Array) is
+   begin
+      Write (File_Out, Item);
+   end Data_Out;
+
+   -------------------
+   -- Generate_File --
+   -------------------
+
+   procedure Generate_File is
+      subtype Visible_Symbols is Stream_Element range 16#20# .. 16#7E#;
+
+      package Random_Elements is
+         new Ada.Numerics.Discrete_Random (Visible_Symbols);
+
+      Gen    : Random_Elements.Generator;
+      Buffer : Stream_Element_Array := (1 .. 77 => 16#20#) & 10;
+
+      Buffer_Count : constant Count := File_Size / Buffer'Length;
+      --  Number of same buffers in the packet.
+
+      Density : constant Count := 30; --  from 0 to Buffer'Length - 2;
+
+      procedure Fill_Buffer (J, D : in Count);
+      --  Change the part of the buffer.
+
+      -----------------
+      -- Fill_Buffer --
+      -----------------
+
+      procedure Fill_Buffer (J, D : in Count) is
+      begin
+         for K in 0 .. D loop
+            Buffer
+              (Stream_Element_Offset ((J + K) mod (Buffer'Length - 1) + 1))
+             := Random_Elements.Random (Gen);
+
+         end loop;
+      end Fill_Buffer;
+
+   begin
+      Random_Elements.Reset (Gen, Init_Random);
+
+      Create (File_In, Out_File, In_File_Name);
+
+      Fill_Buffer (1, Buffer'Length - 2);
+
+      for J in 1 .. Buffer_Count loop
+         Write (File_In, Buffer);
+
+         Fill_Buffer (J, Density);
+      end loop;
+
+      --  fill remain size.
+
+      Write
+        (File_In,
+         Buffer
+           (1 .. Stream_Element_Offset
+                   (File_Size - Buffer'Length * Buffer_Count)));
+
+      Flush (File_In);
+      Close (File_In);
+   end Generate_File;
+
+   ---------------------
+   -- Print_Statistic --
+   ---------------------
+
+   procedure Print_Statistic (Msg : String; Data_Size : ZLib.Count) is
+      use Ada.Calendar;
+      use Ada.Text_IO;
+
+      package Count_IO is new Integer_IO (ZLib.Count);
+
+      Curr_Dur : Duration := Clock - Time_Stamp;
+   begin
+      Put (Msg);
+
+      Set_Col (20);
+      Ada.Text_IO.Put ("size =");
+
+      Count_IO.Put
+        (Data_Size,
+         Width => Stream_IO.Count'Image (File_Size)'Length);
+
+      Put_Line (" duration =" & Duration'Image (Curr_Dur));
+   end Print_Statistic;
+
+   -----------
+   -- Stamp --
+   -----------
+
+   procedure Stamp is
+   begin
+      Time_Stamp := Ada.Calendar.Clock;
+   end Stamp;
+
+begin
+   Ada.Text_IO.Put_Line ("ZLib " & ZLib.Version);
+
+   loop
+      Generate_File;
+
+      for Level in ZLib.Compression_Level'Range loop
+
+         Ada.Text_IO.Put_Line ("Level ="
+            & ZLib.Compression_Level'Image (Level));
+
+         --  Test generic interface.
+         Open   (File_In, In_File, In_File_Name);
+         Create (File_Out, Out_File, Z_File_Name);
+
+         Stamp;
+
+         --  Deflate using generic instantiation.
+
+         ZLib.Deflate_Init
+               (Filter   => Filter,
+                Level    => Level,
+                Strategy => Strategy,
+                Header   => Header);
+
+         Translate (Filter);
+         Print_Statistic ("Generic compress", ZLib.Total_Out (Filter));
+         ZLib.Close (Filter);
+
+         Close (File_In);
+         Close (File_Out);
+
+         Open   (File_In, In_File, Z_File_Name);
+         Create (File_Out, Out_File, Out_File_Name);
+
+         Stamp;
+
+         --  Inflate using generic instantiation.
+
+         ZLib.Inflate_Init (Filter, Header => Header);
+
+         Translate (Filter);
+         Print_Statistic ("Generic decompress", ZLib.Total_Out (Filter));
+
+         ZLib.Close (Filter);
+
+         Close (File_In);
+         Close (File_Out);
+
+         Compare_Files (In_File_Name, Out_File_Name);
+
+         --  Test stream interface.
+
+         --  Compress to the back stream.
+
+         Open   (File_In, In_File, In_File_Name);
+         Create (File_Back, Out_File, Z_File_Name);
+
+         Stamp;
+
+         ZLib.Streams.Create
+           (Stream          => File_Z,
+            Mode            => ZLib.Streams.Out_Stream,
+            Back            => ZLib.Streams.Stream_Access
+                                 (Stream (File_Back)),
+            Back_Compressed => True,
+            Level           => Level,
+            Strategy        => Strategy,
+            Header          => Header);
+
+         Copy_Streams
+           (Source => Stream (File_In).all,
+            Target => File_Z);
+
+         --  Flushing internal buffers to the back stream.
+
+         ZLib.Streams.Flush (File_Z, ZLib.Finish);
+
+         Print_Statistic ("Write compress",
+                          ZLib.Streams.Write_Total_Out (File_Z));
+
+         ZLib.Streams.Close (File_Z);
+
+         Close (File_In);
+         Close (File_Back);
+
+         --  Compare reading from original file and from
+         --  decompression stream.
+
+         Open (File_In,   In_File, In_File_Name);
+         Open (File_Back, In_File, Z_File_Name);
+
+         ZLib.Streams.Create
+           (Stream          => File_Z,
+            Mode            => ZLib.Streams.In_Stream,
+            Back            => ZLib.Streams.Stream_Access
+                                 (Stream (File_Back)),
+            Back_Compressed => True,
+            Header          => Header);
+
+         Stamp;
+         Compare_Streams (Stream (File_In).all, File_Z);
+
+         Print_Statistic ("Read decompress",
+                          ZLib.Streams.Read_Total_Out (File_Z));
+
+         ZLib.Streams.Close (File_Z);
+         Close (File_In);
+         Close (File_Back);
+
+         --  Compress by reading from compression stream.
+
+         Open (File_Back, In_File, In_File_Name);
+         Create (File_Out, Out_File, Z_File_Name);
+
+         ZLib.Streams.Create
+           (Stream          => File_Z,
+            Mode            => ZLib.Streams.In_Stream,
+            Back            => ZLib.Streams.Stream_Access
+                                 (Stream (File_Back)),
+            Back_Compressed => False,
+            Level           => Level,
+            Strategy        => Strategy,
+            Header          => Header);
+
+         Stamp;
+         Copy_Streams
+           (Source => File_Z,
+            Target => Stream (File_Out).all);
+
+         Print_Statistic ("Read compress",
+                          ZLib.Streams.Read_Total_Out (File_Z));
+
+         ZLib.Streams.Close (File_Z);
+
+         Close (File_Out);
+         Close (File_Back);
+
+         --  Decompress to decompression stream.
+
+         Open   (File_In,   In_File, Z_File_Name);
+         Create (File_Back, Out_File, Out_File_Name);
+
+         ZLib.Streams.Create
+           (Stream          => File_Z,
+            Mode            => ZLib.Streams.Out_Stream,
+            Back            => ZLib.Streams.Stream_Access
+                                 (Stream (File_Back)),
+            Back_Compressed => False,
+            Header          => Header);
+
+         Stamp;
+
+         Copy_Streams
+           (Source => Stream (File_In).all,
+            Target => File_Z);
+
+         Print_Statistic ("Write decompress",
+                          ZLib.Streams.Write_Total_Out (File_Z));
+
+         ZLib.Streams.Close (File_Z);
+         Close (File_In);
+         Close (File_Back);
+
+         Compare_Files (In_File_Name, Out_File_Name);
+      end loop;
+
+      Ada.Text_IO.Put_Line (Count'Image (File_Size) & " Ok.");
+
+      exit when not Continuous;
+
+      File_Size := File_Size + 1;
+   end loop;
+end Test;

vendor/tcl/compat/zlib/contrib/ada/zlib-streams.adb

@@ -0,0 +1,225 @@
+----------------------------------------------------------------
+--  ZLib for Ada thick binding.                               --
+--                                                            --
+--  Copyright (C) 2002-2003 Dmitriy Anisimkov                 --
+--                                                            --
+--  Open source license information is in the zlib.ads file.  --
+----------------------------------------------------------------
+
+--  $Id: zlib-streams.adb,v 1.10 2004/05/31 10:53:40 vagul Exp $
+
+with Ada.Unchecked_Deallocation;
+
+package body ZLib.Streams is
+
+   -----------
+   -- Close --
+   -----------
+
+   procedure Close (Stream : in out Stream_Type) is
+      procedure Free is new Ada.Unchecked_Deallocation
+         (Stream_Element_Array, Buffer_Access);
+   begin
+      if Stream.Mode = Out_Stream or Stream.Mode = Duplex then
+         --  We should flush the data written by the writer.
+
+         Flush (Stream, Finish);
+
+         Close (Stream.Writer);
+      end if;
+
+      if Stream.Mode = In_Stream or Stream.Mode = Duplex then
+         Close (Stream.Reader);
+         Free (Stream.Buffer);
+      end if;
+   end Close;
+
+   ------------
+   -- Create --
+   ------------
+
+   procedure Create
+     (Stream            :    out Stream_Type;
+      Mode              : in     Stream_Mode;
+      Back              : in     Stream_Access;
+      Back_Compressed   : in     Boolean;
+      Level             : in     Compression_Level := Default_Compression;
+      Strategy          : in     Strategy_Type     := Default_Strategy;
+      Header            : in     Header_Type       := Default;
+      Read_Buffer_Size  : in     Ada.Streams.Stream_Element_Offset
+                                    := Default_Buffer_Size;
+      Write_Buffer_Size : in     Ada.Streams.Stream_Element_Offset
+                                    := Default_Buffer_Size)
+   is
+
+      subtype Buffer_Subtype is Stream_Element_Array (1 .. Read_Buffer_Size);
+
+      procedure Init_Filter
+         (Filter   : in out Filter_Type;
+          Compress : in     Boolean);
+
+      -----------------
+      -- Init_Filter --
+      -----------------
+
+      procedure Init_Filter
+         (Filter   : in out Filter_Type;
+          Compress : in     Boolean) is
+      begin
+         if Compress then
+            Deflate_Init
+              (Filter, Level, Strategy, Header => Header);
+         else
+            Inflate_Init (Filter, Header => Header);
+         end if;
+      end Init_Filter;
+
+   begin
+      Stream.Back := Back;
+      Stream.Mode := Mode;
+
+      if Mode = Out_Stream or Mode = Duplex then
+         Init_Filter (Stream.Writer, Back_Compressed);
+         Stream.Buffer_Size := Write_Buffer_Size;
+      else
+         Stream.Buffer_Size := 0;
+      end if;
+
+      if Mode = In_Stream or Mode = Duplex then
+         Init_Filter (Stream.Reader, not Back_Compressed);
+
+         Stream.Buffer     := new Buffer_Subtype;
+         Stream.Rest_First := Stream.Buffer'Last + 1;
+         Stream.Rest_Last  := Stream.Buffer'Last;
+      end if;
+   end Create;
+
+   -----------
+   -- Flush --
+   -----------
+
+   procedure Flush
+     (Stream : in out Stream_Type;
+      Mode   : in     Flush_Mode := Sync_Flush)
+   is
+      Buffer : Stream_Element_Array (1 .. Stream.Buffer_Size);
+      Last   : Stream_Element_Offset;
+   begin
+      loop
+         Flush (Stream.Writer, Buffer, Last, Mode);
+
+         Ada.Streams.Write (Stream.Back.all, Buffer (1 .. Last));
+
+         exit when Last < Buffer'Last;
+      end loop;
+   end Flush;
+
+   -------------
+   -- Is_Open --
+   -------------
+
+   function Is_Open (Stream : Stream_Type) return Boolean is
+   begin
+      return Is_Open (Stream.Reader) or else Is_Open (Stream.Writer);
+   end Is_Open;
+
+   ----------
+   -- Read --
+   ----------
+
+   procedure Read
+     (Stream : in out Stream_Type;
+      Item   :    out Stream_Element_Array;
+      Last   :    out Stream_Element_Offset)
+   is
+
+      procedure Read
+        (Item : out Stream_Element_Array;
+         Last : out Stream_Element_Offset);
+
+      ----------
+      -- Read --
+      ----------
+
+      procedure Read
+        (Item : out Stream_Element_Array;
+         Last : out Stream_Element_Offset) is
+      begin
+         Ada.Streams.Read (Stream.Back.all, Item, Last);
+      end Read;
+
+      procedure Read is new ZLib.Read
+         (Read       => Read,
+          Buffer     => Stream.Buffer.all,
+          Rest_First => Stream.Rest_First,
+          Rest_Last  => Stream.Rest_Last);
+
+   begin
+      Read (Stream.Reader, Item, Last);
+   end Read;
+
+   -------------------
+   -- Read_Total_In --
+   -------------------
+
+   function Read_Total_In (Stream : in Stream_Type) return Count is
+   begin
+      return Total_In (Stream.Reader);
+   end Read_Total_In;
+
+   --------------------
+   -- Read_Total_Out --
+   --------------------
+
+   function Read_Total_Out (Stream : in Stream_Type) return Count is
+   begin
+      return Total_Out (Stream.Reader);
+   end Read_Total_Out;
+
+   -----------
+   -- Write --
+   -----------
+
+   procedure Write
+     (Stream : in out Stream_Type;
+      Item   : in     Stream_Element_Array)
+   is
+
+      procedure Write (Item : in Stream_Element_Array);
+
+      -----------
+      -- Write --
+      -----------
+
+      procedure Write (Item : in Stream_Element_Array) is
+      begin
+         Ada.Streams.Write (Stream.Back.all, Item);
+      end Write;
+
+      procedure Write is new ZLib.Write
+         (Write       => Write,
+          Buffer_Size => Stream.Buffer_Size);
+
+   begin
+      Write (Stream.Writer, Item, No_Flush);
+   end Write;
+
+   --------------------
+   -- Write_Total_In --
+   --------------------
+
+   function Write_Total_In (Stream : in Stream_Type) return Count is
+   begin
+      return Total_In (Stream.Writer);
+   end Write_Total_In;
+
+   ---------------------
+   -- Write_Total_Out --
+   ---------------------
+
+   function Write_Total_Out (Stream : in Stream_Type) return Count is
+   begin
+      return Total_Out (Stream.Writer);
+   end Write_Total_Out;
+
+end ZLib.Streams;

vendor/tcl/compat/zlib/contrib/ada/zlib-streams.ads

@@ -0,0 +1,114 @@
+----------------------------------------------------------------
+--  ZLib for Ada thick binding.                               --
+--                                                            --
+--  Copyright (C) 2002-2003 Dmitriy Anisimkov                 --
+--                                                            --
+--  Open source license information is in the zlib.ads file.  --
+----------------------------------------------------------------
+
+--  $Id: zlib-streams.ads,v 1.12 2004/05/31 10:53:40 vagul Exp $
+
+package ZLib.Streams is
+
+   type Stream_Mode is (In_Stream, Out_Stream, Duplex);
+
+   type Stream_Access is access all Ada.Streams.Root_Stream_Type'Class;
+
+   type Stream_Type is
+      new Ada.Streams.Root_Stream_Type with private;
+
+   procedure Read
+     (Stream : in out Stream_Type;
+      Item   :    out Ada.Streams.Stream_Element_Array;
+      Last   :    out Ada.Streams.Stream_Element_Offset);
+
+   procedure Write
+     (Stream : in out Stream_Type;
+      Item   : in     Ada.Streams.Stream_Element_Array);
+
+   procedure Flush
+     (Stream : in out Stream_Type;
+      Mode   : in     Flush_Mode := Sync_Flush);
+   --  Flush the written data to the back stream,
+   --  all data placed to the compressor is flushing to the Back stream.
+   --  Should not be used until necessary, because it is decreasing
+   --  compression.
+
+   function Read_Total_In (Stream : in Stream_Type) return Count;
+   pragma Inline (Read_Total_In);
+   --  Return total number of bytes read from back stream so far.
+
+   function Read_Total_Out (Stream : in Stream_Type) return Count;
+   pragma Inline (Read_Total_Out);
+   --  Return total number of bytes read so far.
+
+   function Write_Total_In (Stream : in Stream_Type) return Count;
+   pragma Inline (Write_Total_In);
+   --  Return total number of bytes written so far.
+
+   function Write_Total_Out (Stream : in Stream_Type) return Count;
+   pragma Inline (Write_Total_Out);
+   --  Return total number of bytes written to the back stream.
+
+   procedure Create
+     (Stream            :    out Stream_Type;
+      Mode              : in     Stream_Mode;
+      Back              : in     Stream_Access;
+      Back_Compressed   : in     Boolean;
+      Level             : in     Compression_Level := Default_Compression;
+      Strategy          : in     Strategy_Type     := Default_Strategy;
+      Header            : in     Header_Type       := Default;
+      Read_Buffer_Size  : in     Ada.Streams.Stream_Element_Offset
+                                    := Default_Buffer_Size;
+      Write_Buffer_Size : in     Ada.Streams.Stream_Element_Offset
+                                    := Default_Buffer_Size);
+   --  Create the Compression/Decompression stream.
+   --  If mode is In_Stream then Write operation is disabled.
+   --  If mode is Out_Stream then Read operation is disabled.
+
+   --  If Back_Compressed is true then
+   --  Data written to the Stream is compressing to the Back stream
+   --  and data read from the Stream is decompressed data from the Back stream.
+
+   --  If Back_Compressed is false then
+   --  Data written to the Stream is decompressing to the Back stream
+   --  and data read from the Stream is compressed data from the Back stream.
+
+   --  !!! When the Need_Header is False ZLib-Ada is using undocumented
+   --  ZLib 1.1.4 functionality to do not create/wait for ZLib headers.
+
+   function Is_Open (Stream : Stream_Type) return Boolean;
+
+   procedure Close (Stream : in out Stream_Type);
+
+private
+
+   use Ada.Streams;
+
+   type Buffer_Access is access all Stream_Element_Array;
+
+   type Stream_Type
+     is new Root_Stream_Type with
+   record
+      Mode       : Stream_Mode;
+
+      Buffer     : Buffer_Access;
+      Rest_First : Stream_Element_Offset;
+      Rest_Last  : Stream_Element_Offset;
+      --  Buffer for Read operation.
+      --  We need to have this buffer in the record
+      --  because not all read data from back stream
+      --  could be processed during the read operation.
+
+      Buffer_Size : Stream_Element_Offset;
+      --  Buffer size for write operation.
+      --  We do not need to have this buffer
+      --  in the record because all data could be
+      --  processed in the write operation.
+
+      Back       : Stream_Access;
+      Reader     : Filter_Type;
+      Writer     : Filter_Type;
+   end record;
+
+end ZLib.Streams;

vendor/tcl/compat/zlib/contrib/ada/zlib-thin.adb

@@ -0,0 +1,142 @@
+----------------------------------------------------------------
+--  ZLib for Ada thick binding.                               --
+--                                                            --
+--  Copyright (C) 2002-2003 Dmitriy Anisimkov                 --
+--                                                            --
+--  Open source license information is in the zlib.ads file.  --
+----------------------------------------------------------------
+
+--  $Id: zlib-thin.adb,v 1.8 2003/12/14 18:27:31 vagul Exp $
+
+package body ZLib.Thin is
+
+   ZLIB_VERSION  : constant Chars_Ptr := zlibVersion;
+
+   Dummy : Z_Stream;
+   Z_Stream_Size : constant Int := Dummy'Size / System.Storage_Unit;
+
+   --------------
+   -- Avail_In --
+   --------------
+
+   function Avail_In (Strm : in Z_Stream) return UInt is
+   begin
+      return Strm.Avail_In;
+   end Avail_In;
+
+   ---------------
+   -- Avail_Out --
+   ---------------
+
+   function Avail_Out (Strm : in Z_Stream) return UInt is
+   begin
+      return Strm.Avail_Out;
+   end Avail_Out;
+
+   ------------------
+   -- Deflate_Init --
+   ------------------
+
+   function Deflate_Init
+     (strm       : Z_Streamp;
+      level      : Int;
+      method     : Int;
+      windowBits : Int;
+      memLevel   : Int;
+      strategy   : Int)
+      return       Int is
+   begin
+      return deflateInit2
+               (strm,
+                level,
+                method,
+                windowBits,
+                memLevel,
+                strategy,
+                ZLIB_VERSION,
+                Z_Stream_Size);
+   end Deflate_Init;
+
+   ------------------
+   -- Inflate_Init --
+   ------------------
+
+   function Inflate_Init (strm : Z_Streamp; windowBits : Int) return Int is
+   begin
+      return inflateInit2 (strm, windowBits, ZLIB_VERSION, Z_Stream_Size);
+   end Inflate_Init;
+
+   ------------------------
+   -- Last_Error_Message --
+   ------------------------
+
+   function Last_Error_Message (Strm : in Z_Stream) return String is
+      use Interfaces.C.Strings;
+   begin
+      if Strm.msg = Null_Ptr then
+         return "";
+      else
+         return Value (Strm.msg);
+      end if;
+   end Last_Error_Message;
+
+   ------------
+   -- Set_In --
+   ------------
+
+   procedure Set_In
+     (Strm   : in out Z_Stream;
+      Buffer : in     Voidp;
+      Size   : in     UInt) is
+   begin
+      Strm.Next_In  := Buffer;
+      Strm.Avail_In := Size;
+   end Set_In;
+
+   ------------------
+   -- Set_Mem_Func --
+   ------------------
+
+   procedure Set_Mem_Func
+     (Strm   : in out Z_Stream;
+      Opaque : in     Voidp;
+      Alloc  : in     alloc_func;
+      Free   : in     free_func) is
+   begin
+      Strm.opaque := Opaque;
+      Strm.zalloc := Alloc;
+      Strm.zfree  := Free;
+   end Set_Mem_Func;
+
+   -------------
+   -- Set_Out --
+   -------------
+
+   procedure Set_Out
+     (Strm   : in out Z_Stream;
+      Buffer : in     Voidp;
+      Size   : in     UInt) is
+   begin
+      Strm.Next_Out  := Buffer;
+      Strm.Avail_Out := Size;
+   end Set_Out;
+
+   --------------
+   -- Total_In --
+   --------------
+
+   function Total_In (Strm : in Z_Stream) return ULong is
+   begin
+      return Strm.Total_In;
+   end Total_In;
+
+   ---------------
+   -- Total_Out --
+   ---------------
+
+   function Total_Out (Strm : in Z_Stream) return ULong is
+   begin
+      return Strm.Total_Out;
+   end Total_Out;
+
+end ZLib.Thin;

vendor/tcl/compat/zlib/contrib/ada/zlib-thin.ads

@@ -0,0 +1,450 @@
+----------------------------------------------------------------
+--  ZLib for Ada thick binding.                               --
+--                                                            --
+--  Copyright (C) 2002-2003 Dmitriy Anisimkov                 --
+--                                                            --
+--  Open source license information is in the zlib.ads file.  --
+----------------------------------------------------------------
+
+--  $Id: zlib-thin.ads,v 1.11 2004/07/23 06:33:11 vagul Exp $
+
+with Interfaces.C.Strings;
+
+with System;
+
+private package ZLib.Thin is
+
+   --  From zconf.h
+
+   MAX_MEM_LEVEL : constant := 9;         --  zconf.h:105
+                                          --  zconf.h:105
+   MAX_WBITS : constant := 15;      --  zconf.h:115
+                                    --  32K LZ77 window
+                                    --  zconf.h:115
+   SEEK_SET : constant := 8#0000#;  --  zconf.h:244
+                                    --  Seek from beginning of file.
+                                    --  zconf.h:244
+   SEEK_CUR : constant := 1;        --  zconf.h:245
+                                    --  Seek from current position.
+                                    --  zconf.h:245
+   SEEK_END : constant := 2;        --  zconf.h:246
+                                    --  Set file pointer to EOF plus "offset"
+                                    --  zconf.h:246
+
+   type Byte is new Interfaces.C.unsigned_char; --  8 bits
+                                                --  zconf.h:214
+   type UInt is new Interfaces.C.unsigned;      --  16 bits or more
+                                                --  zconf.h:216
+   type Int is new Interfaces.C.int;
+
+   type ULong is new Interfaces.C.unsigned_long;     --  32 bits or more
+                                                     --  zconf.h:217
+   subtype Chars_Ptr is Interfaces.C.Strings.chars_ptr;
+
+   type ULong_Access is access ULong;
+   type Int_Access is access Int;
+
+   subtype Voidp is System.Address;            --  zconf.h:232
+
+   subtype Byte_Access is Voidp;
+
+   Nul : constant Voidp := System.Null_Address;
+   --  end from zconf
+
+   Z_NO_FLUSH : constant := 8#0000#;   --  zlib.h:125
+                                       --  zlib.h:125
+   Z_PARTIAL_FLUSH : constant := 1;       --  zlib.h:126
+                                          --  will be removed, use
+                                          --  Z_SYNC_FLUSH instead
+                                          --  zlib.h:126
+   Z_SYNC_FLUSH : constant := 2;       --  zlib.h:127
+                                       --  zlib.h:127
+   Z_FULL_FLUSH : constant := 3;       --  zlib.h:128
+                                       --  zlib.h:128
+   Z_FINISH : constant := 4;        --  zlib.h:129
+                                    --  zlib.h:129
+   Z_OK : constant := 8#0000#;   --  zlib.h:132
+                                 --  zlib.h:132
+   Z_STREAM_END : constant := 1;       --  zlib.h:133
+                                       --  zlib.h:133
+   Z_NEED_DICT : constant := 2;        --  zlib.h:134
+                                       --  zlib.h:134
+   Z_ERRNO : constant := -1;        --  zlib.h:135
+                                    --  zlib.h:135
+   Z_STREAM_ERROR : constant := -2;       --  zlib.h:136
+                                          --  zlib.h:136
+   Z_DATA_ERROR : constant := -3;      --  zlib.h:137
+                                       --  zlib.h:137
+   Z_MEM_ERROR : constant := -4;       --  zlib.h:138
+                                       --  zlib.h:138
+   Z_BUF_ERROR : constant := -5;       --  zlib.h:139
+                                       --  zlib.h:139
+   Z_VERSION_ERROR : constant := -6;      --  zlib.h:140
+                                          --  zlib.h:140
+   Z_NO_COMPRESSION : constant := 8#0000#;   --  zlib.h:145
+                                             --  zlib.h:145
+   Z_BEST_SPEED : constant := 1;       --  zlib.h:146
+                                       --  zlib.h:146
+   Z_BEST_COMPRESSION : constant := 9;       --  zlib.h:147
+                                             --  zlib.h:147
+   Z_DEFAULT_COMPRESSION : constant := -1;      --  zlib.h:148
+                                                --  zlib.h:148
+   Z_FILTERED : constant := 1;      --  zlib.h:151
+                                    --  zlib.h:151
+   Z_HUFFMAN_ONLY : constant := 2;        --  zlib.h:152
+                                          --  zlib.h:152
+   Z_DEFAULT_STRATEGY : constant := 8#0000#; --  zlib.h:153
+                                             --  zlib.h:153
+   Z_BINARY : constant := 8#0000#;  --  zlib.h:156
+                                    --  zlib.h:156
+   Z_ASCII : constant := 1;      --  zlib.h:157
+                                 --  zlib.h:157
+   Z_UNKNOWN : constant := 2;       --  zlib.h:158
+                                    --  zlib.h:158
+   Z_DEFLATED : constant := 8;      --  zlib.h:161
+                                    --  zlib.h:161
+   Z_NULL : constant := 8#0000#; --  zlib.h:164
+                                 --  for initializing zalloc, zfree, opaque
+                                 --  zlib.h:164
+   type gzFile is new Voidp;                  --  zlib.h:646
+
+   type Z_Stream is private;
+
+   type Z_Streamp is access all Z_Stream;     --  zlib.h:89
+
+   type alloc_func is access function
+     (Opaque : Voidp;
+      Items  : UInt;
+      Size   : UInt)
+      return Voidp; --  zlib.h:63
+
+   type free_func is access procedure (opaque : Voidp; address : Voidp);
+
+   function zlibVersion return Chars_Ptr;
+
+   function Deflate (strm : Z_Streamp; flush : Int) return Int;
+
+   function DeflateEnd (strm : Z_Streamp) return Int;
+
+   function Inflate (strm : Z_Streamp; flush : Int) return Int;
+
+   function InflateEnd (strm : Z_Streamp) return Int;
+
+   function deflateSetDictionary
+     (strm       : Z_Streamp;
+      dictionary : Byte_Access;
+      dictLength : UInt)
+      return       Int;
+
+   function deflateCopy (dest : Z_Streamp; source : Z_Streamp) return Int;
+   --  zlib.h:478
+
+   function deflateReset (strm : Z_Streamp) return Int; -- zlib.h:495
+
+   function deflateParams
+     (strm     : Z_Streamp;
+      level    : Int;
+      strategy : Int)
+      return     Int;       -- zlib.h:506
+
+   function inflateSetDictionary
+     (strm       : Z_Streamp;
+      dictionary : Byte_Access;
+      dictLength : UInt)
+      return       Int; --  zlib.h:548
+
+   function inflateSync (strm : Z_Streamp) return Int;  --  zlib.h:565
+
+   function inflateReset (strm : Z_Streamp) return Int; --  zlib.h:580
+
+   function compress
+     (dest      : Byte_Access;
+      destLen   : ULong_Access;
+      source    : Byte_Access;
+      sourceLen : ULong)
+      return      Int;           -- zlib.h:601
+
+   function compress2
+     (dest      : Byte_Access;
+      destLen   : ULong_Access;
+      source    : Byte_Access;
+      sourceLen : ULong;
+      level     : Int)
+      return      Int;          -- zlib.h:615
+
+   function uncompress
+     (dest      : Byte_Access;
+      destLen   : ULong_Access;
+      source    : Byte_Access;
+      sourceLen : ULong)
+      return      Int;
+
+   function gzopen (path : Chars_Ptr; mode : Chars_Ptr) return gzFile;
+
+   function gzdopen (fd : Int; mode : Chars_Ptr) return gzFile;
+
+   function gzsetparams
+     (file     : gzFile;
+      level    : Int;
+      strategy : Int)
+      return     Int;
+
+   function gzread
+     (file : gzFile;
+      buf  : Voidp;
+      len  : UInt)
+      return Int;
+
+   function gzwrite
+     (file : in gzFile;
+      buf  : in Voidp;
+      len  : in UInt)
+      return Int;
+
+   function gzprintf (file : in gzFile; format : in Chars_Ptr) return Int;
+
+   function gzputs (file : in gzFile; s : in Chars_Ptr) return Int;
+
+   function gzgets
+     (file : gzFile;
+      buf  : Chars_Ptr;
+      len  : Int)
+      return Chars_Ptr;
+
+   function gzputc (file : gzFile; char : Int) return Int;
+
+   function gzgetc (file : gzFile) return Int;
+
+   function gzflush (file : gzFile; flush : Int) return Int;
+
+   function gzseek
+     (file   : gzFile;
+      offset : Int;
+      whence : Int)
+      return   Int;
+
+   function gzrewind (file : gzFile) return Int;
+
+   function gztell (file : gzFile) return Int;
+
+   function gzeof (file : gzFile) return Int;
+
+   function gzclose (file : gzFile) return Int;
+
+   function gzerror (file : gzFile; errnum : Int_Access) return Chars_Ptr;
+
+   function adler32
+     (adler : ULong;
+      buf   : Byte_Access;
+      len   : UInt)
+      return  ULong;
+
+   function crc32
+     (crc  : ULong;
+      buf  : Byte_Access;
+      len  : UInt)
+      return ULong;
+
+   function deflateInit
+     (strm        : Z_Streamp;
+      level       : Int;
+      version     : Chars_Ptr;
+      stream_size : Int)
+      return        Int;
+
+   function deflateInit2
+     (strm        : Z_Streamp;
+      level       : Int;
+      method      : Int;
+      windowBits  : Int;
+      memLevel    : Int;
+      strategy    : Int;
+      version     : Chars_Ptr;
+      stream_size : Int)
+      return        Int;
+
+   function Deflate_Init
+     (strm       : Z_Streamp;
+      level      : Int;
+      method     : Int;
+      windowBits : Int;
+      memLevel   : Int;
+      strategy   : Int)
+      return       Int;
+   pragma Inline (Deflate_Init);
+
+   function inflateInit
+     (strm        : Z_Streamp;
+      version     : Chars_Ptr;
+      stream_size : Int)
+      return        Int;
+
+   function inflateInit2
+     (strm        : in Z_Streamp;
+      windowBits  : in Int;
+      version     : in Chars_Ptr;
+      stream_size : in Int)
+      return      Int;
+
+   function inflateBackInit
+     (strm        : in Z_Streamp;
+      windowBits  : in Int;
+      window      : in Byte_Access;
+      version     : in Chars_Ptr;
+      stream_size : in Int)
+      return      Int;
+   --  Size of window have to be 2**windowBits.
+
+   function Inflate_Init (strm : Z_Streamp; windowBits : Int) return Int;
+   pragma Inline (Inflate_Init);
+
+   function zError (err : Int) return Chars_Ptr;
+
+   function inflateSyncPoint (z : Z_Streamp) return Int;
+
+   function get_crc_table return ULong_Access;
+
+   --  Interface to the available fields of the z_stream structure.
+   --  The application must update next_in and avail_in when avail_in has
+   --  dropped to zero. It must update next_out and avail_out when avail_out
+   --  has dropped to zero. The application must initialize zalloc, zfree and
+   --  opaque before calling the init function.
+
+   procedure Set_In
+     (Strm   : in out Z_Stream;
+      Buffer : in Voidp;
+      Size   : in UInt);
+   pragma Inline (Set_In);
+
+   procedure Set_Out
+     (Strm   : in out Z_Stream;
+      Buffer : in Voidp;
+      Size   : in UInt);
+   pragma Inline (Set_Out);
+
+   procedure Set_Mem_Func
+     (Strm   : in out Z_Stream;
+      Opaque : in Voidp;
+      Alloc  : in alloc_func;
+      Free   : in free_func);
+   pragma Inline (Set_Mem_Func);
+
+   function Last_Error_Message (Strm : in Z_Stream) return String;
+   pragma Inline (Last_Error_Message);
+
+   function Avail_Out (Strm : in Z_Stream) return UInt;
+   pragma Inline (Avail_Out);
+
+   function Avail_In (Strm : in Z_Stream) return UInt;
+   pragma Inline (Avail_In);
+
+   function Total_In (Strm : in Z_Stream) return ULong;
+   pragma Inline (Total_In);
+
+   function Total_Out (Strm : in Z_Stream) return ULong;
+   pragma Inline (Total_Out);
+
+   function inflateCopy
+     (dest   : in Z_Streamp;
+      Source : in Z_Streamp)
+      return Int;
+
+   function compressBound (Source_Len : in ULong) return ULong;
+
+   function deflateBound
+     (Strm       : in Z_Streamp;
+      Source_Len : in ULong)
+      return     ULong;
+
+   function gzungetc (C : in Int; File : in  gzFile) return Int;
+
+   function zlibCompileFlags return ULong;
+
+private
+
+   type Z_Stream is record            -- zlib.h:68
+      Next_In   : Voidp      := Nul;  -- next input byte
+      Avail_In  : UInt       := 0;    -- number of bytes available at next_in
+      Total_In  : ULong      := 0;    -- total nb of input bytes read so far
+      Next_Out  : Voidp      := Nul;  -- next output byte should be put there
+      Avail_Out : UInt       := 0;    -- remaining free space at next_out
+      Total_Out : ULong      := 0;    -- total nb of bytes output so far
+      msg       : Chars_Ptr;          -- last error message, NULL if no error
+      state     : Voidp;              -- not visible by applications
+      zalloc    : alloc_func := null; -- used to allocate the internal state
+      zfree     : free_func  := null; -- used to free the internal state
+      opaque    : Voidp;              -- private data object passed to
+                                      --  zalloc and zfree
+      data_type : Int;                -- best guess about the data type:
+                                      --  ascii or binary
+      adler     : ULong;              -- adler32 value of the uncompressed
+                                      --  data
+      reserved  : ULong;              -- reserved for future use
+   end record;
+
+   pragma Convention (C, Z_Stream);
+
+   pragma Import (C, zlibVersion, "zlibVersion");
+   pragma Import (C, Deflate, "deflate");
+   pragma Import (C, DeflateEnd, "deflateEnd");
+   pragma Import (C, Inflate, "inflate");
+   pragma Import (C, InflateEnd, "inflateEnd");
+   pragma Import (C, deflateSetDictionary, "deflateSetDictionary");
+   pragma Import (C, deflateCopy, "deflateCopy");
+   pragma Import (C, deflateReset, "deflateReset");
+   pragma Import (C, deflateParams, "deflateParams");
+   pragma Import (C, inflateSetDictionary, "inflateSetDictionary");
+   pragma Import (C, inflateSync, "inflateSync");
+   pragma Import (C, inflateReset, "inflateReset");
+   pragma Import (C, compress, "compress");
+   pragma Import (C, compress2, "compress2");
+   pragma Import (C, uncompress, "uncompress");
+   pragma Import (C, gzopen, "gzopen");
+   pragma Import (C, gzdopen, "gzdopen");
+   pragma Import (C, gzsetparams, "gzsetparams");
+   pragma Import (C, gzread, "gzread");
+   pragma Import (C, gzwrite, "gzwrite");
+   pragma Import (C, gzprintf, "gzprintf");
+   pragma Import (C, gzputs, "gzputs");
+   pragma Import (C, gzgets, "gzgets");
+   pragma Import (C, gzputc, "gzputc");
+   pragma Import (C, gzgetc, "gzgetc");
+   pragma Import (C, gzflush, "gzflush");
+   pragma Import (C, gzseek, "gzseek");
+   pragma Import (C, gzrewind, "gzrewind");
+   pragma Import (C, gztell, "gztell");
+   pragma Import (C, gzeof, "gzeof");
+   pragma Import (C, gzclose, "gzclose");
+   pragma Import (C, gzerror, "gzerror");
+   pragma Import (C, adler32, "adler32");
+   pragma Import (C, crc32, "crc32");
+   pragma Import (C, deflateInit, "deflateInit_");
+   pragma Import (C, inflateInit, "inflateInit_");
+   pragma Import (C, deflateInit2, "deflateInit2_");
+   pragma Import (C, inflateInit2, "inflateInit2_");
+   pragma Import (C, zError, "zError");
+   pragma Import (C, inflateSyncPoint, "inflateSyncPoint");
+   pragma Import (C, get_crc_table, "get_crc_table");
+
+   --  since zlib 1.2.0:
+
+   pragma Import (C, inflateCopy, "inflateCopy");
+   pragma Import (C, compressBound, "compressBound");
+   pragma Import (C, deflateBound, "deflateBound");
+   pragma Import (C, gzungetc, "gzungetc");
+   pragma Import (C, zlibCompileFlags, "zlibCompileFlags");
+
+   pragma Import (C, inflateBackInit, "inflateBackInit_");
+
+   --  I stopped binding the inflateBack routines, because realize that
+   --  it does not support zlib and gzip headers for now, and have no
+   --  symmetric deflateBack routines.
+   --  ZLib-Ada is symmetric regarding deflate/inflate data transformation
+   --  and has a similar generic callback interface for the
+   --  deflate/inflate transformation based on the regular Deflate/Inflate
+   --  routines.
+
+   --  pragma Import (C, inflateBack, "inflateBack");
+   --  pragma Import (C, inflateBackEnd, "inflateBackEnd");
+
+end ZLib.Thin;

vendor/tcl/compat/zlib/contrib/ada/zlib.adb

@@ -0,0 +1,701 @@
+----------------------------------------------------------------
+--  ZLib for Ada thick binding.                               --
+--                                                            --
+--  Copyright (C) 2002-2004 Dmitriy Anisimkov                 --
+--                                                            --
+--  Open source license information is in the zlib.ads file.  --
+----------------------------------------------------------------
+
+--  $Id: zlib.adb,v 1.31 2004/09/06 06:53:19 vagul Exp $
+
+with Ada.Exceptions;
+with Ada.Unchecked_Conversion;
+with Ada.Unchecked_Deallocation;
+
+with Interfaces.C.Strings;
+
+with ZLib.Thin;
+
+package body ZLib is
+
+   use type Thin.Int;
+
+   type Z_Stream is new Thin.Z_Stream;
+
+   type Return_Code_Enum is
+      (OK,
+       STREAM_END,
+       NEED_DICT,
+       ERRNO,
+       STREAM_ERROR,
+       DATA_ERROR,
+       MEM_ERROR,
+       BUF_ERROR,
+       VERSION_ERROR);
+
+   type Flate_Step_Function is access
+     function (Strm : in Thin.Z_Streamp; Flush : in Thin.Int) return Thin.Int;
+   pragma Convention (C, Flate_Step_Function);
+
+   type Flate_End_Function is access
+      function (Ctrm : in Thin.Z_Streamp) return Thin.Int;
+   pragma Convention (C, Flate_End_Function);
+
+   type Flate_Type is record
+      Step : Flate_Step_Function;
+      Done : Flate_End_Function;
+   end record;
+
+   subtype Footer_Array is Stream_Element_Array (1 .. 8);
+
+   Simple_GZip_Header : constant Stream_Element_Array (1 .. 10)
+     := (16#1f#, 16#8b#,                 --  Magic header
+         16#08#,                         --  Z_DEFLATED
+         16#00#,                         --  Flags
+         16#00#, 16#00#, 16#00#, 16#00#, --  Time
+         16#00#,                         --  XFlags
+         16#03#                          --  OS code
+        );
+   --  The simplest gzip header is not for informational, but just for
+   --  gzip format compatibility.
+   --  Note that some code below is using assumption
+   --  Simple_GZip_Header'Last > Footer_Array'Last, so do not make
+   --  Simple_GZip_Header'Last <= Footer_Array'Last.
+
+   Return_Code : constant array (Thin.Int range <>) of Return_Code_Enum
+     := (0 => OK,
+         1 => STREAM_END,
+         2 => NEED_DICT,
+        -1 => ERRNO,
+        -2 => STREAM_ERROR,
+        -3 => DATA_ERROR,
+        -4 => MEM_ERROR,
+        -5 => BUF_ERROR,
+        -6 => VERSION_ERROR);
+
+   Flate : constant array (Boolean) of Flate_Type
+     := (True  => (Step => Thin.Deflate'Access,
+                   Done => Thin.DeflateEnd'Access),
+         False => (Step => Thin.Inflate'Access,
+                   Done => Thin.InflateEnd'Access));
+
+   Flush_Finish : constant array (Boolean) of Flush_Mode
+     := (True => Finish, False => No_Flush);
+
+   procedure Raise_Error (Stream : in Z_Stream);
+   pragma Inline (Raise_Error);
+
+   procedure Raise_Error (Message : in String);
+   pragma Inline (Raise_Error);
+
+   procedure Check_Error (Stream : in Z_Stream; Code : in Thin.Int);
+
+   procedure Free is new Ada.Unchecked_Deallocation
+      (Z_Stream, Z_Stream_Access);
+
+   function To_Thin_Access is new Ada.Unchecked_Conversion
+     (Z_Stream_Access, Thin.Z_Streamp);
+
+   procedure Translate_GZip
+     (Filter    : in out Filter_Type;
+      In_Data   : in     Ada.Streams.Stream_Element_Array;
+      In_Last   :    out Ada.Streams.Stream_Element_Offset;
+      Out_Data  :    out Ada.Streams.Stream_Element_Array;
+      Out_Last  :    out Ada.Streams.Stream_Element_Offset;
+      Flush     : in     Flush_Mode);
+   --  Separate translate routine for make gzip header.
+
+   procedure Translate_Auto
+     (Filter    : in out Filter_Type;
+      In_Data   : in     Ada.Streams.Stream_Element_Array;
+      In_Last   :    out Ada.Streams.Stream_Element_Offset;
+      Out_Data  :    out Ada.Streams.Stream_Element_Array;
+      Out_Last  :    out Ada.Streams.Stream_Element_Offset;
+      Flush     : in     Flush_Mode);
+   --  translate routine without additional headers.
+
+   -----------------
+   -- Check_Error --
+   -----------------
+
+   procedure Check_Error (Stream : in Z_Stream; Code : in Thin.Int) is
+      use type Thin.Int;
+   begin
+      if Code /= Thin.Z_OK then
+         Raise_Error
+            (Return_Code_Enum'Image (Return_Code (Code))
+              & ": " & Last_Error_Message (Stream));
+      end if;
+   end Check_Error;
+
+   -----------
+   -- Close --
+   -----------
+
+   procedure Close
+     (Filter       : in out Filter_Type;
+      Ignore_Error : in     Boolean := False)
+   is
+      Code : Thin.Int;
+   begin
+      if not Ignore_Error and then not Is_Open (Filter) then
+         raise Status_Error;
+      end if;
+
+      Code := Flate (Filter.Compression).Done (To_Thin_Access (Filter.Strm));
+
+      if Ignore_Error or else Code = Thin.Z_OK then
+         Free (Filter.Strm);
+      else
+         declare
+            Error_Message : constant String
+              := Last_Error_Message (Filter.Strm.all);
+         begin
+            Free (Filter.Strm);
+            Ada.Exceptions.Raise_Exception
+               (ZLib_Error'Identity,
+                Return_Code_Enum'Image (Return_Code (Code))
+                  & ": " & Error_Message);
+         end;
+      end if;
+   end Close;
+
+   -----------
+   -- CRC32 --
+   -----------
+
+   function CRC32
+     (CRC  : in Unsigned_32;
+      Data : in Ada.Streams.Stream_Element_Array)
+      return Unsigned_32
+   is
+      use Thin;
+   begin
+      return Unsigned_32 (crc32 (ULong (CRC),
+                                 Data'Address,
+                                 Data'Length));
+   end CRC32;
+
+   procedure CRC32
+     (CRC  : in out Unsigned_32;
+      Data : in     Ada.Streams.Stream_Element_Array) is
+   begin
+      CRC := CRC32 (CRC, Data);
+   end CRC32;
+
+   ------------------
+   -- Deflate_Init --
+   ------------------
+
+   procedure Deflate_Init
+     (Filter       : in out Filter_Type;
+      Level        : in     Compression_Level  := Default_Compression;
+      Strategy     : in     Strategy_Type      := Default_Strategy;
+      Method       : in     Compression_Method := Deflated;
+      Window_Bits  : in     Window_Bits_Type   := Default_Window_Bits;
+      Memory_Level : in     Memory_Level_Type  := Default_Memory_Level;
+      Header       : in     Header_Type        := Default)
+   is
+      use type Thin.Int;
+      Win_Bits : Thin.Int := Thin.Int (Window_Bits);
+   begin
+      if Is_Open (Filter) then
+         raise Status_Error;
+      end if;
+
+      --  We allow ZLib to make header only in case of default header type.
+      --  Otherwise we would either do header by ourselves, or do not do
+      --  header at all.
+
+      if Header = None or else Header = GZip then
+         Win_Bits := -Win_Bits;
+      end if;
+
+      --  For the GZip CRC calculation and make headers.
+
+      if Header = GZip then
+         Filter.CRC    := 0;
+         Filter.Offset := Simple_GZip_Header'First;
+      else
+         Filter.Offset := Simple_GZip_Header'Last + 1;
+      end if;
+
+      Filter.Strm        := new Z_Stream;
+      Filter.Compression := True;
+      Filter.Stream_End  := False;
+      Filter.Header      := Header;
+
+      if Thin.Deflate_Init
+           (To_Thin_Access (Filter.Strm),
+            Level      => Thin.Int (Level),
+            method     => Thin.Int (Method),
+            windowBits => Win_Bits,
+            memLevel   => Thin.Int (Memory_Level),
+            strategy   => Thin.Int (Strategy)) /= Thin.Z_OK
+      then
+         Raise_Error (Filter.Strm.all);
+      end if;
+   end Deflate_Init;
+
+   -----------
+   -- Flush --
+   -----------
+
+   procedure Flush
+     (Filter    : in out Filter_Type;
+      Out_Data  :    out Ada.Streams.Stream_Element_Array;
+      Out_Last  :    out Ada.Streams.Stream_Element_Offset;
+      Flush     : in     Flush_Mode)
+   is
+      No_Data : Stream_Element_Array := (1 .. 0 => 0);
+      Last    : Stream_Element_Offset;
+   begin
+      Translate (Filter, No_Data, Last, Out_Data, Out_Last, Flush);
+   end Flush;
+
+   -----------------------
+   -- Generic_Translate --
+   -----------------------
+
+   procedure Generic_Translate
+     (Filter          : in out ZLib.Filter_Type;
+      In_Buffer_Size  : in     Integer := Default_Buffer_Size;
+      Out_Buffer_Size : in     Integer := Default_Buffer_Size)
+   is
+      In_Buffer  : Stream_Element_Array
+                     (1 .. Stream_Element_Offset (In_Buffer_Size));
+      Out_Buffer : Stream_Element_Array
+                     (1 .. Stream_Element_Offset (Out_Buffer_Size));
+      Last       : Stream_Element_Offset;
+      In_Last    : Stream_Element_Offset;
+      In_First   : Stream_Element_Offset;
+      Out_Last   : Stream_Element_Offset;
+   begin
+      Main : loop
+         Data_In (In_Buffer, Last);
+
+         In_First := In_Buffer'First;
+
+         loop
+            Translate
+              (Filter   => Filter,
+               In_Data  => In_Buffer (In_First .. Last),
+               In_Last  => In_Last,
+               Out_Data => Out_Buffer,
+               Out_Last => Out_Last,
+               Flush    => Flush_Finish (Last < In_Buffer'First));
+
+            if Out_Buffer'First <= Out_Last then
+               Data_Out (Out_Buffer (Out_Buffer'First .. Out_Last));
+            end if;
+
+            exit Main when Stream_End (Filter);
+
+            --  The end of in buffer.
+
+            exit when In_Last = Last;
+
+            In_First := In_Last + 1;
+         end loop;
+      end loop Main;
+
+   end Generic_Translate;
+
+   ------------------
+   -- Inflate_Init --
+   ------------------
+
+   procedure Inflate_Init
+     (Filter      : in out Filter_Type;
+      Window_Bits : in     Window_Bits_Type := Default_Window_Bits;
+      Header      : in     Header_Type      := Default)
+   is
+      use type Thin.Int;
+      Win_Bits : Thin.Int := Thin.Int (Window_Bits);
+
+      procedure Check_Version;
+      --  Check the latest header types compatibility.
+
+      procedure Check_Version is
+      begin
+         if Version <= "1.1.4" then
+            Raise_Error
+              ("Inflate header type " & Header_Type'Image (Header)
+               & " incompatible with ZLib version " & Version);
+         end if;
+      end Check_Version;
+
+   begin
+      if Is_Open (Filter) then
+         raise Status_Error;
+      end if;
+
+      case Header is
+         when None =>
+            Check_Version;
+
+            --  Inflate data without headers determined
+            --  by negative Win_Bits.
+
+            Win_Bits := -Win_Bits;
+         when GZip =>
+            Check_Version;
+
+            --  Inflate gzip data defined by flag 16.
+
+            Win_Bits := Win_Bits + 16;
+         when Auto =>
+            Check_Version;
+
+            --  Inflate with automatic detection
+            --  of gzip or native header defined by flag 32.
+
+            Win_Bits := Win_Bits + 32;
+         when Default => null;
+      end case;
+
+      Filter.Strm        := new Z_Stream;
+      Filter.Compression := False;
+      Filter.Stream_End  := False;
+      Filter.Header      := Header;
+
+      if Thin.Inflate_Init
+         (To_Thin_Access (Filter.Strm), Win_Bits) /= Thin.Z_OK
+      then
+         Raise_Error (Filter.Strm.all);
+      end if;
+   end Inflate_Init;
+
+   -------------
+   -- Is_Open --
+   -------------
+
+   function Is_Open (Filter : in Filter_Type) return Boolean is
+   begin
+      return Filter.Strm /= null;
+   end Is_Open;
+
+   -----------------
+   -- Raise_Error --
+   -----------------
+
+   procedure Raise_Error (Message : in String) is
+   begin
+      Ada.Exceptions.Raise_Exception (ZLib_Error'Identity, Message);
+   end Raise_Error;
+
+   procedure Raise_Error (Stream : in Z_Stream) is
+   begin
+      Raise_Error (Last_Error_Message (Stream));
+   end Raise_Error;
+
+   ----------
+   -- Read --
+   ----------
+
+   procedure Read
+     (Filter : in out Filter_Type;
+      Item   :    out Ada.Streams.Stream_Element_Array;
+      Last   :    out Ada.Streams.Stream_Element_Offset;
+      Flush  : in     Flush_Mode := No_Flush)
+   is
+      In_Last    : Stream_Element_Offset;
+      Item_First : Ada.Streams.Stream_Element_Offset := Item'First;
+      V_Flush    : Flush_Mode := Flush;
+
+   begin
+      pragma Assert (Rest_First in Buffer'First .. Buffer'Last + 1);
+      pragma Assert (Rest_Last in Buffer'First - 1 .. Buffer'Last);
+
+      loop
+         if Rest_Last = Buffer'First - 1 then
+            V_Flush := Finish;
+
+         elsif Rest_First > Rest_Last then
+            Read (Buffer, Rest_Last);
+            Rest_First := Buffer'First;
+
+            if Rest_Last < Buffer'First then
+               V_Flush := Finish;
+            end if;
+         end if;
+
+         Translate
+           (Filter   => Filter,
+            In_Data  => Buffer (Rest_First .. Rest_Last),
+            In_Last  => In_Last,
+            Out_Data => Item (Item_First .. Item'Last),
+            Out_Last => Last,
+            Flush    => V_Flush);
+
+         Rest_First := In_Last + 1;
+
+         exit when Stream_End (Filter)
+           or else Last = Item'Last
+           or else (Last >= Item'First and then Allow_Read_Some);
+
+         Item_First := Last + 1;
+      end loop;
+   end Read;
+
+   ----------------
+   -- Stream_End --
+   ----------------
+
+   function Stream_End (Filter : in Filter_Type) return Boolean is
+   begin
+      if Filter.Header = GZip and Filter.Compression then
+         return Filter.Stream_End
+            and then Filter.Offset = Footer_Array'Last + 1;
+      else
+         return Filter.Stream_End;
+      end if;
+   end Stream_End;
+
+   --------------
+   -- Total_In --
+   --------------
+
+   function Total_In (Filter : in Filter_Type) return Count is
+   begin
+      return Count (Thin.Total_In (To_Thin_Access (Filter.Strm).all));
+   end Total_In;
+
+   ---------------
+   -- Total_Out --
+   ---------------
+
+   function Total_Out (Filter : in Filter_Type) return Count is
+   begin
+      return Count (Thin.Total_Out (To_Thin_Access (Filter.Strm).all));
+   end Total_Out;
+
+   ---------------
+   -- Translate --
+   ---------------
+
+   procedure Translate
+     (Filter    : in out Filter_Type;
+      In_Data   : in     Ada.Streams.Stream_Element_Array;
+      In_Last   :    out Ada.Streams.Stream_Element_Offset;
+      Out_Data  :    out Ada.Streams.Stream_Element_Array;
+      Out_Last  :    out Ada.Streams.Stream_Element_Offset;
+      Flush     : in     Flush_Mode) is
+   begin
+      if Filter.Header = GZip and then Filter.Compression then
+         Translate_GZip
+           (Filter   => Filter,
+            In_Data  => In_Data,
+            In_Last  => In_Last,
+            Out_Data => Out_Data,
+            Out_Last => Out_Last,
+            Flush    => Flush);
+      else
+         Translate_Auto
+           (Filter   => Filter,
+            In_Data  => In_Data,
+            In_Last  => In_Last,
+            Out_Data => Out_Data,
+            Out_Last => Out_Last,
+            Flush    => Flush);
+      end if;
+   end Translate;
+
+   --------------------
+   -- Translate_Auto --
+   --------------------
+
+   procedure Translate_Auto
+     (Filter    : in out Filter_Type;
+      In_Data   : in     Ada.Streams.Stream_Element_Array;
+      In_Last   :    out Ada.Streams.Stream_Element_Offset;
+      Out_Data  :    out Ada.Streams.Stream_Element_Array;
+      Out_Last  :    out Ada.Streams.Stream_Element_Offset;
+      Flush     : in     Flush_Mode)
+   is
+      use type Thin.Int;
+      Code : Thin.Int;
+
+   begin
+      if not Is_Open (Filter) then
+         raise Status_Error;
+      end if;
+
+      if Out_Data'Length = 0 and then In_Data'Length = 0 then
+         raise Constraint_Error;
+      end if;
+
+      Set_Out (Filter.Strm.all, Out_Data'Address, Out_Data'Length);
+      Set_In  (Filter.Strm.all, In_Data'Address, In_Data'Length);
+
+      Code := Flate (Filter.Compression).Step
+        (To_Thin_Access (Filter.Strm),
+         Thin.Int (Flush));
+
+      if Code = Thin.Z_STREAM_END then
+         Filter.Stream_End := True;
+      else
+         Check_Error (Filter.Strm.all, Code);
+      end if;
+
+      In_Last  := In_Data'Last
+         - Stream_Element_Offset (Avail_In (Filter.Strm.all));
+      Out_Last := Out_Data'Last
+         - Stream_Element_Offset (Avail_Out (Filter.Strm.all));
+   end Translate_Auto;
+
+   --------------------
+   -- Translate_GZip --
+   --------------------
+
+   procedure Translate_GZip
+     (Filter    : in out Filter_Type;
+      In_Data   : in     Ada.Streams.Stream_Element_Array;
+      In_Last   :    out Ada.Streams.Stream_Element_Offset;
+      Out_Data  :    out Ada.Streams.Stream_Element_Array;
+      Out_Last  :    out Ada.Streams.Stream_Element_Offset;
+      Flush     : in     Flush_Mode)
+   is
+      Out_First : Stream_Element_Offset;
+
+      procedure Add_Data (Data : in Stream_Element_Array);
+      --  Add data to stream from the Filter.Offset till necessary,
+      --  used for add gzip headr/footer.
+
+      procedure Put_32
+        (Item : in out Stream_Element_Array;
+         Data : in     Unsigned_32);
+      pragma Inline (Put_32);
+
+      --------------
+      -- Add_Data --
+      --------------
+
+      procedure Add_Data (Data : in Stream_Element_Array) is
+         Data_First : Stream_Element_Offset renames Filter.Offset;
+         Data_Last  : Stream_Element_Offset;
+         Data_Len   : Stream_Element_Offset; --  -1
+         Out_Len    : Stream_Element_Offset; --  -1
+      begin
+         Out_First := Out_Last + 1;
+
+         if Data_First > Data'Last then
+            return;
+         end if;
+
+         Data_Len  := Data'Last     - Data_First;
+         Out_Len   := Out_Data'Last - Out_First;
+
+         if Data_Len <= Out_Len then
+            Out_Last  := Out_First  + Data_Len;
+            Data_Last := Data'Last;
+         else
+            Out_Last  := Out_Data'Last;
+            Data_Last := Data_First + Out_Len;
+         end if;
+
+         Out_Data (Out_First .. Out_Last) := Data (Data_First .. Data_Last);
+
+         Data_First := Data_Last + 1;
+         Out_First  := Out_Last + 1;
+      end Add_Data;
+
+      ------------
+      -- Put_32 --
+      ------------
+
+      procedure Put_32
+        (Item : in out Stream_Element_Array;
+         Data : in     Unsigned_32)
+      is
+         D : Unsigned_32 := Data;
+      begin
+         for J in Item'First .. Item'First + 3 loop
+            Item (J) := Stream_Element (D and 16#FF#);
+            D := Shift_Right (D, 8);
+         end loop;
+      end Put_32;
+
+   begin
+      Out_Last := Out_Data'First - 1;
+
+      if not Filter.Stream_End then
+         Add_Data (Simple_GZip_Header);
+
+         Translate_Auto
+           (Filter   => Filter,
+            In_Data  => In_Data,
+            In_Last  => In_Last,
+            Out_Data => Out_Data (Out_First .. Out_Data'Last),
+            Out_Last => Out_Last,
+            Flush    => Flush);
+
+         CRC32 (Filter.CRC, In_Data (In_Data'First .. In_Last));
+      end if;
+
+      if Filter.Stream_End and then Out_Last <= Out_Data'Last then
+         --  This detection method would work only when
+         --  Simple_GZip_Header'Last > Footer_Array'Last
+
+         if Filter.Offset = Simple_GZip_Header'Last + 1 then
+            Filter.Offset := Footer_Array'First;
+         end if;
+
+         declare
+            Footer : Footer_Array;
+         begin
+            Put_32 (Footer, Filter.CRC);
+            Put_32 (Footer (Footer'First + 4 .. Footer'Last),
+                    Unsigned_32 (Total_In (Filter)));
+            Add_Data (Footer);
+         end;
+      end if;
+   end Translate_GZip;
+
+   -------------
+   -- Version --
+   -------------
+
+   function Version return String is
+   begin
+      return Interfaces.C.Strings.Value (Thin.zlibVersion);
+   end Version;
+
+   -----------
+   -- Write --
+   -----------
+
+   procedure Write
+     (Filter : in out Filter_Type;
+      Item   : in     Ada.Streams.Stream_Element_Array;
+      Flush  : in     Flush_Mode := No_Flush)
+   is
+      Buffer   : Stream_Element_Array (1 .. Buffer_Size);
+      In_Last  : Stream_Element_Offset;
+      Out_Last : Stream_Element_Offset;
+      In_First : Stream_Element_Offset := Item'First;
+   begin
+      if Item'Length = 0 and Flush = No_Flush then
+         return;
+      end if;
+
+      loop
+         Translate
+           (Filter   => Filter,
+            In_Data  => Item (In_First .. Item'Last),
+            In_Last  => In_Last,
+            Out_Data => Buffer,
+            Out_Last => Out_Last,
+            Flush    => Flush);
+
+         if Out_Last >= Buffer'First then
+            Write (Buffer (1 .. Out_Last));
+         end if;
+
+         exit when In_Last = Item'Last or Stream_End (Filter);
+
+         In_First := In_Last + 1;
+      end loop;
+   end Write;
+
+end ZLib;

vendor/tcl/compat/zlib/contrib/ada/zlib.ads

@@ -0,0 +1,328 @@
+------------------------------------------------------------------------------
+--                      ZLib for Ada thick binding.                         --
+--                                                                          --
+--              Copyright (C) 2002-2004 Dmitriy Anisimkov                   --
+--                                                                          --
+--  This library is free software; you can redistribute it and/or modify    --
+--  it under the terms of the GNU General Public License as published by    --
+--  the Free Software Foundation; either version 2 of the License, or (at   --
+--  your option) any later version.                                         --
+--                                                                          --
+--  This library is distributed in the hope that it will be useful, but     --
+--  WITHOUT ANY WARRANTY; without even the implied warranty of              --
+--  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU       --
+--  General Public License for more details.                                --
+--                                                                          --
+--  You should have received a copy of the GNU General Public License       --
+--  along with this library; if not, write to the Free Software Foundation, --
+--  Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.          --
+--                                                                          --
+--  As a special exception, if other files instantiate generics from this   --
+--  unit, or you link this unit with other files to produce an executable,  --
+--  this  unit  does not  by itself cause  the resulting executable to be   --
+--  covered by the GNU General Public License. This exception does not      --
+--  however invalidate any other reasons why the executable file  might be  --
+--  covered by the  GNU Public License.                                     --
+------------------------------------------------------------------------------
+
+--  $Id: zlib.ads,v 1.26 2004/09/06 06:53:19 vagul Exp $
+
+with Ada.Streams;
+
+with Interfaces;
+
+package ZLib is
+
+   ZLib_Error   : exception;
+   Status_Error : exception;
+
+   type Compression_Level is new Integer range -1 .. 9;
+
+   type Flush_Mode is private;
+
+   type Compression_Method is private;
+
+   type Window_Bits_Type is new Integer range 8 .. 15;
+
+   type Memory_Level_Type is new Integer range 1 .. 9;
+
+   type Unsigned_32 is new Interfaces.Unsigned_32;
+
+   type Strategy_Type is private;
+
+   type Header_Type is (None, Auto, Default, GZip);
+   --  Header type usage have a some limitation for inflate.
+   --  See comment for Inflate_Init.
+
+   subtype Count is Ada.Streams.Stream_Element_Count;
+
+   Default_Memory_Level : constant Memory_Level_Type := 8;
+   Default_Window_Bits  : constant Window_Bits_Type  := 15;
+
+   ----------------------------------
+   -- Compression method constants --
+   ----------------------------------
+
+   Deflated : constant Compression_Method;
+   --  Only one method allowed in this ZLib version
+
+   ---------------------------------
+   -- Compression level constants --
+   ---------------------------------
+
+   No_Compression      : constant Compression_Level := 0;
+   Best_Speed          : constant Compression_Level := 1;
+   Best_Compression    : constant Compression_Level := 9;
+   Default_Compression : constant Compression_Level := -1;
+
+   --------------------------
+   -- Flush mode constants --
+   --------------------------
+
+   No_Flush      : constant Flush_Mode;
+   --  Regular way for compression, no flush
+
+   Partial_Flush : constant Flush_Mode;
+   --  Will be removed, use Z_SYNC_FLUSH instead
+
+   Sync_Flush    : constant Flush_Mode;
+   --  All pending output is flushed to the output buffer and the output
+   --  is aligned on a byte boundary, so that the decompressor can get all
+   --  input data available so far. (In particular avail_in is zero after the
+   --  call if enough output space has been provided  before the call.)
+   --  Flushing may degrade compression for some compression algorithms and so
+   --  it should be used only when necessary.
+
+   Block_Flush   : constant Flush_Mode;
+   --  Z_BLOCK requests that inflate() stop
+   --  if and when it get to the next deflate block boundary. When decoding the
+   --  zlib or gzip format, this will cause inflate() to return immediately
+   --  after the header and before the first block. When doing a raw inflate,
+   --  inflate() will go ahead and process the first block, and will return
+   --  when it gets to the end of that block, or when it runs out of data.
+
+   Full_Flush    : constant Flush_Mode;
+   --  All output is flushed as with SYNC_FLUSH, and the compression state
+   --  is reset so that decompression can restart from this point if previous
+   --  compressed data has been damaged or if random access is desired. Using
+   --  Full_Flush too often can seriously degrade the compression.
+
+   Finish        : constant Flush_Mode;
+   --  Just for tell the compressor that input data is complete.
+
+   ------------------------------------
+   -- Compression strategy constants --
+   ------------------------------------
+
+   --  RLE strategy could be used only in version 1.2.0 and later.
+
+   Filtered         : constant Strategy_Type;
+   Huffman_Only     : constant Strategy_Type;
+   RLE              : constant Strategy_Type;
+   Default_Strategy : constant Strategy_Type;
+
+   Default_Buffer_Size : constant := 4096;
+
+   type Filter_Type is tagged limited private;
+   --  The filter is for compression and for decompression.
+   --  The usage of the type is depend of its initialization.
+
+   function Version return String;
+   pragma Inline (Version);
+   --  Return string representation of the ZLib version.
+
+   procedure Deflate_Init
+     (Filter       : in out Filter_Type;
+      Level        : in     Compression_Level  := Default_Compression;
+      Strategy     : in     Strategy_Type      := Default_Strategy;
+      Method       : in     Compression_Method := Deflated;
+      Window_Bits  : in     Window_Bits_Type   := Default_Window_Bits;
+      Memory_Level : in     Memory_Level_Type  := Default_Memory_Level;
+      Header       : in     Header_Type        := Default);
+   --  Compressor initialization.
+   --  When Header parameter is Auto or Default, then default zlib header
+   --  would be provided for compressed data.
+   --  When Header is GZip, then gzip header would be set instead of
+   --  default header.
+   --  When Header is None, no header would be set for compressed data.
+
+   procedure Inflate_Init
+     (Filter      : in out Filter_Type;
+      Window_Bits : in     Window_Bits_Type := Default_Window_Bits;
+      Header      : in     Header_Type      := Default);
+   --  Decompressor initialization.
+   --  Default header type mean that ZLib default header is expecting in the
+   --  input compressed stream.
+   --  Header type None mean that no header is expecting in the input stream.
+   --  GZip header type mean that GZip header is expecting in the
+   --  input compressed stream.
+   --  Auto header type mean that header type (GZip or Native) would be
+   --  detected automatically in the input stream.
+   --  Note that header types parameter values None, GZip and Auto are
+   --  supported for inflate routine only in ZLib versions 1.2.0.2 and later.
+   --  Deflate_Init is supporting all header types.
+
+   function Is_Open (Filter : in Filter_Type) return Boolean;
+   pragma Inline (Is_Open);
+   --  Is the filter opened for compression or decompression.
+
+   procedure Close
+     (Filter       : in out Filter_Type;
+      Ignore_Error : in     Boolean := False);
+   --  Closing the compression or decompressor.
+   --  If stream is closing before the complete and Ignore_Error is False,
+   --  The exception would be raised.
+
+   generic
+      with procedure Data_In
+        (Item : out Ada.Streams.Stream_Element_Array;
+         Last : out Ada.Streams.Stream_Element_Offset);
+      with procedure Data_Out
+        (Item : in Ada.Streams.Stream_Element_Array);
+   procedure Generic_Translate
+     (Filter          : in out Filter_Type;
+      In_Buffer_Size  : in     Integer := Default_Buffer_Size;
+      Out_Buffer_Size : in     Integer := Default_Buffer_Size);
+   --  Compress/decompress data fetch from Data_In routine and pass the result
+   --  to the Data_Out routine. User should provide Data_In and Data_Out
+   --  for compression/decompression data flow.
+   --  Compression or decompression depend on Filter initialization.
+
+   function Total_In (Filter : in Filter_Type) return Count;
+   pragma Inline (Total_In);
+   --  Returns total number of input bytes read so far
+
+   function Total_Out (Filter : in Filter_Type) return Count;
+   pragma Inline (Total_Out);
+   --  Returns total number of bytes output so far
+
+   function CRC32
+     (CRC    : in Unsigned_32;
+      Data   : in Ada.Streams.Stream_Element_Array)
+      return Unsigned_32;
+   pragma Inline (CRC32);
+   --  Compute CRC32, it could be necessary for make gzip format
+
+   procedure CRC32
+     (CRC  : in out Unsigned_32;
+      Data : in     Ada.Streams.Stream_Element_Array);
+   pragma Inline (CRC32);
+   --  Compute CRC32, it could be necessary for make gzip format
+
+   -------------------------------------------------
+   --  Below is more complex low level routines.  --
+   -------------------------------------------------
+
+   procedure Translate
+     (Filter    : in out Filter_Type;
+      In_Data   : in     Ada.Streams.Stream_Element_Array;
+      In_Last   :    out Ada.Streams.Stream_Element_Offset;
+      Out_Data  :    out Ada.Streams.Stream_Element_Array;
+      Out_Last  :    out Ada.Streams.Stream_Element_Offset;
+      Flush     : in     Flush_Mode);
+   --  Compress/decompress the In_Data buffer and place the result into
+   --  Out_Data. In_Last is the index of last element from In_Data accepted by
+   --  the Filter. Out_Last is the last element of the received data from
+   --  Filter. To tell the filter that incoming data are complete put the
+   --  Flush parameter to Finish.
+
+   function Stream_End (Filter : in Filter_Type) return Boolean;
+   pragma Inline (Stream_End);
+   --  Return the true when the stream is complete.
+
+   procedure Flush
+     (Filter    : in out Filter_Type;
+      Out_Data  :    out Ada.Streams.Stream_Element_Array;
+      Out_Last  :    out Ada.Streams.Stream_Element_Offset;
+      Flush     : in     Flush_Mode);
+   pragma Inline (Flush);
+   --  Flushing the data from the compressor.
+
+   generic
+      with procedure Write
+        (Item : in Ada.Streams.Stream_Element_Array);
+      --  User should provide this routine for accept
+      --  compressed/decompressed data.
+
+      Buffer_Size : in Ada.Streams.Stream_Element_Offset
+         := Default_Buffer_Size;
+      --  Buffer size for Write user routine.
+
+   procedure Write
+     (Filter  : in out Filter_Type;
+      Item    : in     Ada.Streams.Stream_Element_Array;
+      Flush   : in     Flush_Mode := No_Flush);
+   --  Compress/Decompress data from Item to the generic parameter procedure
+   --  Write. Output buffer size could be set in Buffer_Size generic parameter.
+
+   generic
+      with procedure Read
+        (Item : out Ada.Streams.Stream_Element_Array;
+         Last : out Ada.Streams.Stream_Element_Offset);
+      --  User should provide data for compression/decompression
+      --  thru this routine.
+
+      Buffer : in out Ada.Streams.Stream_Element_Array;
+      --  Buffer for keep remaining data from the previous
+      --  back read.
+
+      Rest_First, Rest_Last : in out Ada.Streams.Stream_Element_Offset;
+      --  Rest_First have to be initialized to Buffer'Last + 1
+      --  Rest_Last have to be initialized to Buffer'Last
+      --  before usage.
+
+      Allow_Read_Some : in Boolean := False;
+      --  Is it allowed to return Last < Item'Last before end of data.
+
+   procedure Read
+     (Filter : in out Filter_Type;
+      Item   :    out Ada.Streams.Stream_Element_Array;
+      Last   :    out Ada.Streams.Stream_Element_Offset;
+      Flush  : in     Flush_Mode := No_Flush);
+   --  Compress/Decompress data from generic parameter procedure Read to the
+   --  Item. User should provide Buffer and initialized Rest_First, Rest_Last
+   --  indicators. If Allow_Read_Some is True, Read routines could return
+   --  Last < Item'Last only at end of stream.
+
+private
+
+   use Ada.Streams;
+
+   pragma Assert (Ada.Streams.Stream_Element'Size    =    8);
+   pragma Assert (Ada.Streams.Stream_Element'Modulus = 2**8);
+
+   type Flush_Mode is new Integer range 0 .. 5;
+
+   type Compression_Method is new Integer range 8 .. 8;
+
+   type Strategy_Type is new Integer range 0 .. 3;
+
+   No_Flush      : constant Flush_Mode := 0;
+   Partial_Flush : constant Flush_Mode := 1;
+   Sync_Flush    : constant Flush_Mode := 2;
+   Full_Flush    : constant Flush_Mode := 3;
+   Finish        : constant Flush_Mode := 4;
+   Block_Flush   : constant Flush_Mode := 5;
+
+   Filtered         : constant Strategy_Type := 1;
+   Huffman_Only     : constant Strategy_Type := 2;
+   RLE              : constant Strategy_Type := 3;
+   Default_Strategy : constant Strategy_Type := 0;
+
+   Deflated : constant Compression_Method := 8;
+
+   type Z_Stream;
+
+   type Z_Stream_Access is access all Z_Stream;
+
+   type Filter_Type is tagged limited record
+      Strm        : Z_Stream_Access;
+      Compression : Boolean;
+      Stream_End  : Boolean;
+      Header      : Header_Type;
+      CRC         : Unsigned_32;
+      Offset      : Stream_Element_Offset;
+      --  Offset for gzip header/footer output.
+   end record;
+
+end ZLib;

vendor/tcl/compat/zlib/contrib/ada/zlib.gpr

@@ -0,0 +1,20 @@
+project Zlib is
+
+   for Languages use ("Ada");
+   for Source_Dirs use (".");
+   for Object_Dir use ".";
+   for Main use ("test.adb", "mtest.adb", "read.adb", "buffer_demo");
+
+   package Compiler is
+      for Default_Switches ("ada") use ("-gnatwcfilopru", "-gnatVcdfimorst", "-gnatyabcefhiklmnoprst");
+   end Compiler;
+
+   package Linker is
+      for Default_Switches ("ada") use ("-lz");
+   end Linker;
+
+   package Builder is
+      for Default_Switches ("ada") use ("-s", "-gnatQ");
+   end Builder;
+
+end Zlib;

vendor/tcl/compat/zlib/contrib/asm686/match.S

@@ -0,0 +1,357 @@
+/* match.S -- x86 assembly version of the zlib longest_match() function.
+ * Optimized for the Intel 686 chips (PPro and later).
+ *
+ * Copyright (C) 1998, 2007 Brian Raiter <breadbox@muppetlabs.com>
+ *
+ * This software is provided 'as-is', without any express or implied
+ * warranty.  In no event will the author be held liable for any damages
+ * arising from the use of this software.
+ *
+ * Permission is granted to anyone to use this software for any purpose,
+ * including commercial applications, and to alter it and redistribute it
+ * freely, subject to the following restrictions:
+ *
+ * 1. The origin of this software must not be misrepresented; you must not
+ *    claim that you wrote the original software. If you use this software
+ *    in a product, an acknowledgment in the product documentation would be
+ *    appreciated but is not required.
+ * 2. Altered source versions must be plainly marked as such, and must not be
+ *    misrepresented as being the original software.
+ * 3. This notice may not be removed or altered from any source distribution.
+ */
+
+#ifndef NO_UNDERLINE
+#define	match_init	_match_init
+#define	longest_match	_longest_match
+#endif
+
+#define	MAX_MATCH	(258)
+#define	MIN_MATCH	(3)
+#define	MIN_LOOKAHEAD	(MAX_MATCH + MIN_MATCH + 1)
+#define	MAX_MATCH_8	((MAX_MATCH + 7) & ~7)
+
+/* stack frame offsets */
+
+#define	chainlenwmask		0	/* high word: current chain len	*/
+					/* low word: s->wmask		*/
+#define	window			4	/* local copy of s->window	*/
+#define	windowbestlen		8	/* s->window + bestlen		*/
+#define	scanstart		16	/* first two bytes of string	*/
+#define	scanend			12	/* last two bytes of string	*/
+#define	scanalign		20	/* dword-misalignment of string	*/
+#define	nicematch		24	/* a good enough match size	*/
+#define	bestlen			28	/* size of best match so far	*/
+#define	scan			32	/* ptr to string wanting match	*/
+
+#define	LocalVarsSize		(36)
+/*	saved ebx		36 */
+/*	saved edi		40 */
+/*	saved esi		44 */
+/*	saved ebp		48 */
+/*	return address		52 */
+#define	deflatestate		56	/* the function arguments	*/
+#define	curmatch		60
+
+/* All the +zlib1222add offsets are due to the addition of fields
+ *  in zlib in the deflate_state structure since the asm code was first written
+ * (if you compile with zlib 1.0.4 or older, use "zlib1222add equ (-4)").
+ * (if you compile with zlib between 1.0.5 and 1.2.2.1, use "zlib1222add equ 0").
+ * if you compile with zlib 1.2.2.2 or later , use "zlib1222add equ 8").
+ */
+
+#define zlib1222add		(8)
+
+#define	dsWSize			(36+zlib1222add)
+#define	dsWMask			(44+zlib1222add)
+#define	dsWindow		(48+zlib1222add)
+#define	dsPrev			(56+zlib1222add)
+#define	dsMatchLen		(88+zlib1222add)
+#define	dsPrevMatch		(92+zlib1222add)
+#define	dsStrStart		(100+zlib1222add)
+#define	dsMatchStart		(104+zlib1222add)
+#define	dsLookahead		(108+zlib1222add)
+#define	dsPrevLen		(112+zlib1222add)
+#define	dsMaxChainLen		(116+zlib1222add)
+#define	dsGoodMatch		(132+zlib1222add)
+#define	dsNiceMatch		(136+zlib1222add)
+
+
+.file "match.S"
+
+.globl	match_init, longest_match
+
+.text
+
+/* uInt longest_match(deflate_state *deflatestate, IPos curmatch) */
+.cfi_sections	.debug_frame
+
+longest_match:
+
+.cfi_startproc
+/* Save registers that the compiler may be using, and adjust %esp to	*/
+/* make room for our stack frame.					*/
+
+		pushl	%ebp
+		.cfi_def_cfa_offset 8
+		.cfi_offset ebp, -8
+		pushl	%edi
+		.cfi_def_cfa_offset 12
+		pushl	%esi
+		.cfi_def_cfa_offset 16
+		pushl	%ebx
+		.cfi_def_cfa_offset 20
+		subl	$LocalVarsSize, %esp
+		.cfi_def_cfa_offset LocalVarsSize+20
+
+/* Retrieve the function arguments. %ecx will hold cur_match		*/
+/* throughout the entire function. %edx will hold the pointer to the	*/
+/* deflate_state structure during the function's setup (before		*/
+/* entering the main loop).						*/
+
+		movl	deflatestate(%esp), %edx
+		movl	curmatch(%esp), %ecx
+
+/* uInt wmask = s->w_mask;						*/
+/* unsigned chain_length = s->max_chain_length;				*/
+/* if (s->prev_length >= s->good_match) {				*/
+/*     chain_length >>= 2;						*/
+/* }									*/
+ 
+		movl	dsPrevLen(%edx), %eax
+		movl	dsGoodMatch(%edx), %ebx
+		cmpl	%ebx, %eax
+		movl	dsWMask(%edx), %eax
+		movl	dsMaxChainLen(%edx), %ebx
+		jl	LastMatchGood
+		shrl	$2, %ebx
+LastMatchGood:
+
+/* chainlen is decremented once beforehand so that the function can	*/
+/* use the sign flag instead of the zero flag for the exit test.	*/
+/* It is then shifted into the high word, to make room for the wmask	*/
+/* value, which it will always accompany.				*/
+
+		decl	%ebx
+		shll	$16, %ebx
+		orl	%eax, %ebx
+		movl	%ebx, chainlenwmask(%esp)
+
+/* if ((uInt)nice_match > s->lookahead) nice_match = s->lookahead;	*/
+
+		movl	dsNiceMatch(%edx), %eax
+		movl	dsLookahead(%edx), %ebx
+		cmpl	%eax, %ebx
+		jl	LookaheadLess
+		movl	%eax, %ebx
+LookaheadLess:	movl	%ebx, nicematch(%esp)
+
+/* Bytef *scan = s->window + s->strstart;			*/
+
+		movl	dsWindow(%edx), %esi
+		movl	%esi, window(%esp)
+		movl	dsStrStart(%edx), %ebp
+		lea	(%esi,%ebp), %edi
+		movl	%edi, scan(%esp)
+
+/* Determine how many bytes the scan ptr is off from being		*/
+/* dword-aligned.							*/
+
+		movl	%edi, %eax
+		negl	%eax
+		andl	$3, %eax
+		movl	%eax, scanalign(%esp)
+
+/* IPos limit = s->strstart > (IPos)MAX_DIST(s) ?			*/
+/*     s->strstart - (IPos)MAX_DIST(s) : NIL;				*/
+
+		movl	dsWSize(%edx), %eax
+		subl	$MIN_LOOKAHEAD, %eax
+		subl	%eax, %ebp
+		jg	LimitPositive
+		xorl	%ebp, %ebp
+LimitPositive:
+
+/* int best_len = s->prev_length;					*/
+
+		movl	dsPrevLen(%edx), %eax
+		movl	%eax, bestlen(%esp)
+
+/* Store the sum of s->window + best_len in %esi locally, and in %esi.	*/
+
+		addl	%eax, %esi
+		movl	%esi, windowbestlen(%esp)
+
+/* ush scan_start = *(ushf*)scan;				*/
+/* ush scan_end   = *(ushf*)(scan+best_len-1);			*/
+/* Posf *prev = s->prev;						*/
+
+		movzwl	(%edi), %ebx
+		movl	%ebx, scanstart(%esp)
+		movzwl	-1(%edi,%eax), %ebx
+		movl	%ebx, scanend(%esp)
+		movl	dsPrev(%edx), %edi
+
+/* Jump into the main loop.						*/
+
+		movl	chainlenwmask(%esp), %edx
+		jmp	LoopEntry
+
+.balign 16
+
+/* do {
+ *     match = s->window + cur_match;
+ *     if (*(ushf*)(match+best_len-1) != scan_end ||
+ *         *(ushf*)match != scan_start) continue;
+ *     [...]
+ * } while ((cur_match = prev[cur_match & wmask]) > limit
+ *          && --chain_length != 0);
+ *
+ * Here is the inner loop of the function. The function will spend the
+ * majority of its time in this loop, and majority of that time will
+ * be spent in the first ten instructions.
+ *
+ * Within this loop:
+ * %ebx = scanend
+ * %ecx = curmatch
+ * %edx = chainlenwmask - i.e., ((chainlen << 16) | wmask)
+ * %esi = windowbestlen - i.e., (window + bestlen)
+ * %edi = prev
+ * %ebp = limit
+ */
+LookupLoop:
+		andl	%edx, %ecx
+		movzwl	(%edi,%ecx,2), %ecx
+		cmpl	%ebp, %ecx
+		jbe	LeaveNow
+		subl	$0x00010000, %edx
+		js	LeaveNow
+LoopEntry:	movzwl	-1(%esi,%ecx), %eax
+		cmpl	%ebx, %eax
+		jnz	LookupLoop
+		movl	window(%esp), %eax
+		movzwl	(%eax,%ecx), %eax
+		cmpl	scanstart(%esp), %eax
+		jnz	LookupLoop
+
+/* Store the current value of chainlen.					*/
+
+		movl	%edx, chainlenwmask(%esp)
+
+/* Point %edi to the string under scrutiny, and %esi to the string we	*/
+/* are hoping to match it up with. In actuality, %esi and %edi are	*/
+/* both pointed (MAX_MATCH_8 - scanalign) bytes ahead, and %edx is	*/
+/* initialized to -(MAX_MATCH_8 - scanalign).				*/
+
+		movl	window(%esp), %esi
+		movl	scan(%esp), %edi
+		addl	%ecx, %esi
+		movl	scanalign(%esp), %eax
+		movl	$(-MAX_MATCH_8), %edx
+		lea	MAX_MATCH_8(%edi,%eax), %edi
+		lea	MAX_MATCH_8(%esi,%eax), %esi
+
+/* Test the strings for equality, 8 bytes at a time. At the end,
+ * adjust %edx so that it is offset to the exact byte that mismatched.
+ *
+ * We already know at this point that the first three bytes of the
+ * strings match each other, and they can be safely passed over before
+ * starting the compare loop. So what this code does is skip over 0-3
+ * bytes, as much as necessary in order to dword-align the %edi
+ * pointer. (%esi will still be misaligned three times out of four.)
+ *
+ * It should be confessed that this loop usually does not represent
+ * much of the total running time. Replacing it with a more
+ * straightforward "rep cmpsb" would not drastically degrade
+ * performance.
+ */
+LoopCmps:
+		movl	(%esi,%edx), %eax
+		xorl	(%edi,%edx), %eax
+		jnz	LeaveLoopCmps
+		movl	4(%esi,%edx), %eax
+		xorl	4(%edi,%edx), %eax
+		jnz	LeaveLoopCmps4
+		addl	$8, %edx
+		jnz	LoopCmps
+		jmp	LenMaximum
+LeaveLoopCmps4:	addl	$4, %edx
+LeaveLoopCmps:	testl	$0x0000FFFF, %eax
+		jnz	LenLower
+		addl	$2, %edx
+		shrl	$16, %eax
+LenLower:	subb	$1, %al
+		adcl	$0, %edx
+
+/* Calculate the length of the match. If it is longer than MAX_MATCH,	*/
+/* then automatically accept it as the best possible match and leave.	*/
+
+		lea	(%edi,%edx), %eax
+		movl	scan(%esp), %edi
+		subl	%edi, %eax
+		cmpl	$MAX_MATCH, %eax
+		jge	LenMaximum
+
+/* If the length of the match is not longer than the best match we	*/
+/* have so far, then forget it and return to the lookup loop.		*/
+
+		movl	deflatestate(%esp), %edx
+		movl	bestlen(%esp), %ebx
+		cmpl	%ebx, %eax
+		jg	LongerMatch
+		movl	windowbestlen(%esp), %esi
+		movl	dsPrev(%edx), %edi
+		movl	scanend(%esp), %ebx
+		movl	chainlenwmask(%esp), %edx
+		jmp	LookupLoop
+
+/*         s->match_start = cur_match;					*/
+/*         best_len = len;						*/
+/*         if (len >= nice_match) break;				*/
+/*         scan_end = *(ushf*)(scan+best_len-1);			*/
+
+LongerMatch:	movl	nicematch(%esp), %ebx
+		movl	%eax, bestlen(%esp)
+		movl	%ecx, dsMatchStart(%edx)
+		cmpl	%ebx, %eax
+		jge	LeaveNow
+		movl	window(%esp), %esi
+		addl	%eax, %esi
+		movl	%esi, windowbestlen(%esp)
+		movzwl	-1(%edi,%eax), %ebx
+		movl	dsPrev(%edx), %edi
+		movl	%ebx, scanend(%esp)
+		movl	chainlenwmask(%esp), %edx
+		jmp	LookupLoop
+
+/* Accept the current string, with the maximum possible length.		*/
+
+LenMaximum:	movl	deflatestate(%esp), %edx
+		movl	$MAX_MATCH, bestlen(%esp)
+		movl	%ecx, dsMatchStart(%edx)
+
+/* if ((uInt)best_len <= s->lookahead) return (uInt)best_len;		*/
+/* return s->lookahead;							*/
+
+LeaveNow:
+		movl	deflatestate(%esp), %edx
+		movl	bestlen(%esp), %ebx
+		movl	dsLookahead(%edx), %eax
+		cmpl	%eax, %ebx
+		jg	LookaheadRet
+		movl	%ebx, %eax
+LookaheadRet:
+
+/* Restore the stack and return from whence we came.			*/
+
+		addl	$LocalVarsSize, %esp
+		.cfi_def_cfa_offset 20
+		popl	%ebx
+		.cfi_def_cfa_offset 16
+		popl	%esi
+		.cfi_def_cfa_offset 12
+		popl	%edi
+		.cfi_def_cfa_offset 8
+		popl	%ebp
+		.cfi_def_cfa_offset 4
+.cfi_endproc
+match_init:	ret

vendor/tcl/compat/zlib/contrib/blast/CMakeLists.txt

@@ -0,0 +1,166 @@
+cmake_minimum_required(VERSION 3.12...3.31)
+
+project(
+    blast
+    VERSION 1.3.0
+    LANGUAGES C
+    DESCRIPTION "A library for creating zipfiles based in zlib"
+    HOMEPAGE_URL "https://www.zlib.net")
+
+option(ZLIB_BLAST_BUILD_SHARED "Enable building blast shared library" ON)
+option(ZLIB_BLAST_BUILD_STATIC "Enable building blast static library" ON)
+option(ZLIB_BLAST_BUILD_TESTING "Enable building tests for blast" ON)
+option(ZLIB_BLAST_INSTALL "Enable installation of blast" ON)
+
+include(GNUInstallDirs)
+include(CMakePackageConfigHelpers)
+
+if(WIN32 OR CYGWIN)
+    set(zlibblast_static_suffix "s")
+    set(CMAKE_DEBUG_POSTFIX "d")
+    set(CMAKE_WINDOWS_EXPORT_ALL_SYMBOLS ON)
+endif(WIN32 OR CYGWIN)
+
+function(blast_findTestEnv testName)
+    set(testEnv "PATH=")
+
+    if(MSVC OR MINGW)
+        set(separator "\\\;")
+    else()
+        set(separator ":")
+    endif()
+
+    string(APPEND testEnv "$<TARGET_FILE_DIR:BLAST::BLAST>${separator}")
+    string(APPEND testEnv "$ENV{PATH}")
+
+    set_tests_properties(${testName} PROPERTIES ENVIRONMENT "${testEnv}")
+endfunction(blast_findTestEnv testName)
+
+if(ZLIB_BLAST_BUILD_SHARED)
+    add_library(zlib_blast_blast SHARED
+                blast.c
+                blast.h)
+
+    add_library(BLAST::BLAST ALIAS zlib_blast_blast)
+
+    if(NOT CYGWIN)
+        set_target_properties(zlib_blast_blast
+            PROPERTIES
+                SOVERSION ${blast_VERSION_MAJOR}
+                VERSION ${blast_VERSION})
+    endif(NOT CYGWIN)
+
+    set_target_properties(zlib_blast_blast
+        PROPERTIES
+            EXPORT_NAME BLAST
+            OUTPUT_NAME blast)
+
+    if(ZLIB_BLAST_BUILD_TESTING)
+        enable_testing()
+        add_executable(zlib_blast_blast-test blast-test.c)
+        target_link_libraries(zlib_blast_blast-test PRIVATE zlib_blast_blast)
+
+        add_test(NAME zlib_blast_blast-test
+            COMMAND ${CMAKE_COMMAND} -P ${CMAKE_CURRENT_SOURCE_DIR}/tester.cmake
+                    "$<TARGET_FILE:zlib_blast_blast-test>"
+                    "${CMAKE_CURRENT_SOURCE_DIR}"
+                    "${CMAKE_CURRENT_BINARY_DIR}")
+
+        if(MSVC
+           OR MSYS
+           OR MINGW
+           OR CYGWIN)
+            blast_findtestenv(zlib_blast_blast-test)
+        endif(
+            MSVC
+            OR MSYS
+            OR MINGW
+            OR CYGWIN)
+    endif(ZLIB_BLAST_BUILD_TESTING)
+endif(ZLIB_BLAST_BUILD_SHARED)
+
+if(ZLIB_BLAST_BUILD_STATIC)
+    add_library(zlib_blast_blastStatic STATIC
+                blast.c
+                blast.h)
+
+    add_library(BLAST::BLASTSTATIC ALIAS zlib_blast_blastStatic)
+
+    set_target_properties(zlib_blast_blastStatic
+        PROPERTIES
+            EXPORT_NAME BLASTSTATIC
+            OUTPUT_NAME blast${zlibblast_static_suffix})
+
+    if(ZLIB_BLAST_BUILD_TESTING)
+        enable_testing()
+        add_executable(zlib_blast_testStatic blast-test.c)
+        target_link_libraries(zlib_blast_testStatic
+            PRIVATE zlib_blast_blastStatic)
+
+        add_test(NAME zlib_blast_testStatic
+            COMMAND ${CMAKE_COMMAND} -P ${CMAKE_CURRENT_SOURCE_DIR}/tester.cmake
+                    "$<TARGET_FILE:zlib_blast_testStatic>"
+                    "${CMAKE_CURRENT_SOURCE_DIR}"
+                    "${CMAKE_CURRENT_BINARY_DIR}")
+    endif(ZLIB_BLAST_BUILD_TESTING)
+endif(ZLIB_BLAST_BUILD_STATIC)
+
+if(ZLIB_BLAST_BUILD_TESTING)
+    add_subdirectory(test)
+endif(ZLIB_BLAST_BUILD_TESTING)
+
+if(ZLIB_BLAST_INSTALL)
+    if(ZLIB_BLAST_BUILD_SHARED)
+        install(
+            TARGETS zlib_blast_blast
+            COMPONENT Runtime
+            EXPORT zlibBlastSharedExport
+            RUNTIME DESTINATION "${CMAKE_INSTALL_BINDIR}"
+            ARCHIVE DESTINATION "${CMAKE_INSTALL_LIBDIR}")
+        install(
+            EXPORT zlibBlastSharedExport
+            FILE blast-shared.cmake
+            NAMESPACE BLAST::
+            DESTINATION ${CMAKE_INSTALL_LIBDIR}/cmake/blast)
+
+        if(MSVC)
+            install(
+                FILES $<TARGET_PDB_FILE:zlib_blast_blast>
+                COMPONENT Development
+                DESTINATION ${CMAKE_INSTALL_BINDIR}
+                CONFIGURATIONS Debug OR RelWithDebInfo
+                OPTIONAL)
+        endif(MSVC)
+    endif(ZLIB_BLAST_BUILD_SHARED)
+
+    if(ZLIB_BLAST_BUILD_STATIC)
+        install(
+            TARGETS zlib_blast_blastStatic
+            COMPONENT Development
+            EXPORT zlibBlastStaticExport
+            ARCHIVE DESTINATION "${CMAKE_INSTALL_LIBDIR}")
+        install(
+            EXPORT zlibBlastStaticExport
+            FILE blast-static.cmake
+            NAMESPACE BLAST::
+            DESTINATION ${CMAKE_INSTALL_LIBDIR}/cmake/blast)
+    endif(ZLIB_BLAST_BUILD_STATIC)
+
+    configure_package_config_file(
+        ${blast_SOURCE_DIR}/blastConfig.cmake.in
+        ${blast_BINARY_DIR}/blastConfig.cmake
+        INSTALL_DESTINATION ${CMAKE_INSTALL_LIBDIR}/cmake/blast)
+
+    write_basic_package_version_file(
+        "${blast_BINARY_DIR}/blastConfigVersion.cmake"
+        VERSION "${blast_VERSION}"
+        COMPATIBILITY AnyNewerVersion)
+
+    install(FILES ${blast_BINARY_DIR}/blastConfig.cmake
+                  ${blast_BINARY_DIR}/blastConfigVersion.cmake
+            DESTINATION ${CMAKE_INSTALL_LIBDIR}/cmake/blast)
+    install(
+        FILES blast.h
+        COMPONENT Development
+        DESTINATION "${CMAKE_INSTALL_INCLUDEDIR}")
+endif(ZLIB_BLAST_INSTALL)

vendor/tcl/compat/zlib/contrib/blast/Makefile

@@ -0,0 +1,14 @@
+all: test
+
+libblast.so: blast.c blast.h
+	cc -o libblast.so -shared blast.c
+
+blast-test: libblast.so
+	cc -o blast-test.o -c blast-test.c
+	cc -o blast-test blast-test.o libblast.so
+
+test: blast-test
+	LD_LIBRARY_PATH=./ ./blast-test < test.pk | cmp - test.txt
+
+clean:
+	rm -f libblast.so blast-test blast-test.o

vendor/tcl/compat/zlib/contrib/blast/README

@@ -0,0 +1,4 @@
+Read blast.h for purpose and usage.
+
+Mark Adler
+madler@alumni.caltech.edu

vendor/tcl/compat/zlib/contrib/blast/blast-test.c

@@ -0,0 +1,42 @@
+#include "blast.h"              /* prototype for blast() */
+
+/* Example of how to use blast() */
+#include <stdio.h>
+#include <stdlib.h>
+
+#define CHUNK 16384
+
+local unsigned inf(void *how, unsigned char **buf)
+{
+    static unsigned char hold[CHUNK];
+
+    *buf = hold;
+    return fread(hold, 1, CHUNK, (FILE *)how);
+}
+
+local int outf(void *how, unsigned char *buf, unsigned len)
+{
+    return fwrite(buf, 1, len, (FILE *)how) != len;
+}
+
+/* Decompress a PKWare Compression Library stream from stdin to stdout */
+int main(void)
+{
+    int ret;
+    unsigned left;
+
+    /* decompress to stdout */
+    left = 0;
+    ret = blast(inf, stdin, outf, stdout, &left, NULL);
+    if (ret != 0)
+        fprintf(stderr, "blast error: %d\n", ret);
+
+    /* count any leftover bytes */
+    while (getchar() != EOF)
+        left++;
+    if (left)
+        fprintf(stderr, "blast warning: %u unused bytes of input\n", left);
+
+    /* return blast() error code */
+    return ret;
+}

vendor/tcl/compat/zlib/contrib/blast/blast.c

@@ -0,0 +1,422 @@
+/* blast.c
+ * Copyright (C) 2003, 2012, 2013 Mark Adler
+ * For conditions of distribution and use, see copyright notice in blast.h
+ * version 1.3, 24 Aug 2013
+ *
+ * blast.c decompresses data compressed by the PKWare Compression Library.
+ * This function provides functionality similar to the explode() function of
+ * the PKWare library, hence the name "blast".
+ *
+ * This decompressor is based on the excellent format description provided by
+ * Ben Rudiak-Gould in comp.compression on August 13, 2001.  Interestingly, the
+ * example Ben provided in the post is incorrect.  The distance 110001 should
+ * instead be 111000.  When corrected, the example byte stream becomes:
+ *
+ *    00 04 82 24 25 8f 80 7f
+ *
+ * which decompresses to "AIAIAIAIAIAIA" (without the quotes).
+ */
+
+/*
+ * Change history:
+ *
+ * 1.0  12 Feb 2003     - First version
+ * 1.1  16 Feb 2003     - Fixed distance check for > 4 GB uncompressed data
+ * 1.2  24 Oct 2012     - Add note about using binary mode in stdio
+ *                      - Fix comparisons of differently signed integers
+ * 1.3  24 Aug 2013     - Return unused input from blast()
+ *                      - Fix test code to correctly report unused input
+ *                      - Enable the provision of initial input to blast()
+ */
+
+#include <stddef.h>             /* for NULL */
+#include <setjmp.h>             /* for setjmp(), longjmp(), and jmp_buf */
+#include "blast.h"              /* prototype for blast() */
+
+#define MAXBITS 13              /* maximum code length */
+#define MAXWIN 4096             /* maximum window size */
+
+/* input and output state */
+struct state {
+    /* input state */
+    blast_in infun;             /* input function provided by user */
+    void *inhow;                /* opaque information passed to infun() */
+    unsigned char *in;          /* next input location */
+    unsigned left;              /* available input at in */
+    int bitbuf;                 /* bit buffer */
+    int bitcnt;                 /* number of bits in bit buffer */
+
+    /* input limit error return state for bits() and decode() */
+    jmp_buf env;
+
+    /* output state */
+    blast_out outfun;           /* output function provided by user */
+    void *outhow;               /* opaque information passed to outfun() */
+    unsigned next;              /* index of next write location in out[] */
+    int first;                  /* true to check distances (for first 4K) */
+    unsigned char out[MAXWIN];  /* output buffer and sliding window */
+};
+
+/*
+ * Return need bits from the input stream.  This always leaves less than
+ * eight bits in the buffer.  bits() works properly for need == 0.
+ *
+ * Format notes:
+ *
+ * - Bits are stored in bytes from the least significant bit to the most
+ *   significant bit.  Therefore bits are dropped from the bottom of the bit
+ *   buffer, using shift right, and new bytes are appended to the top of the
+ *   bit buffer, using shift left.
+ */
+local int bits(struct state *s, int need)
+{
+    int val;            /* bit accumulator */
+
+    /* load at least need bits into val */
+    val = s->bitbuf;
+    while (s->bitcnt < need) {
+        if (s->left == 0) {
+            s->left = s->infun(s->inhow, &(s->in));
+            if (s->left == 0) longjmp(s->env, 1);       /* out of input */
+        }
+        val |= (int)(*(s->in)++) << s->bitcnt;          /* load eight bits */
+        s->left--;
+        s->bitcnt += 8;
+    }
+
+    /* drop need bits and update buffer, always zero to seven bits left */
+    s->bitbuf = val >> need;
+    s->bitcnt -= need;
+
+    /* return need bits, zeroing the bits above that */
+    return val & ((1 << need) - 1);
+}
+
+/*
+ * Huffman code decoding tables.  count[1..MAXBITS] is the number of symbols of
+ * each length, which for a canonical code are stepped through in order.
+ * symbol[] are the symbol values in canonical order, where the number of
+ * entries is the sum of the counts in count[].  The decoding process can be
+ * seen in the function decode() below.
+ */
+struct huffman {
+    short *count;       /* number of symbols of each length */
+    short *symbol;      /* canonically ordered symbols */
+};
+
+/*
+ * Decode a code from the stream s using huffman table h.  Return the symbol or
+ * a negative value if there is an error.  If all of the lengths are zero, i.e.
+ * an empty code, or if the code is incomplete and an invalid code is received,
+ * then -9 is returned after reading MAXBITS bits.
+ *
+ * Format notes:
+ *
+ * - The codes as stored in the compressed data are bit-reversed relative to
+ *   a simple integer ordering of codes of the same lengths.  Hence below the
+ *   bits are pulled from the compressed data one at a time and used to
+ *   build the code value reversed from what is in the stream in order to
+ *   permit simple integer comparisons for decoding.
+ *
+ * - The first code for the shortest length is all ones.  Subsequent codes of
+ *   the same length are simply integer decrements of the previous code.  When
+ *   moving up a length, a one bit is appended to the code.  For a complete
+ *   code, the last code of the longest length will be all zeros.  To support
+ *   this ordering, the bits pulled during decoding are inverted to apply the
+ *   more "natural" ordering starting with all zeros and incrementing.
+ */
+local int decode(struct state *s, struct huffman *h)
+{
+    int len;            /* current number of bits in code */
+    int code;           /* len bits being decoded */
+    int first;          /* first code of length len */
+    int count;          /* number of codes of length len */
+    int index;          /* index of first code of length len in symbol table */
+    int bitbuf;         /* bits from stream */
+    int left;           /* bits left in next or left to process */
+    short *next;        /* next number of codes */
+
+    bitbuf = s->bitbuf;
+    left = s->bitcnt;
+    code = first = index = 0;
+    len = 1;
+    next = h->count + 1;
+    while (1) {
+        while (left--) {
+            code |= (bitbuf & 1) ^ 1;   /* invert code */
+            bitbuf >>= 1;
+            count = *next++;
+            if (code < first + count) { /* if length len, return symbol */
+                s->bitbuf = bitbuf;
+                s->bitcnt = (s->bitcnt - len) & 7;
+                return h->symbol[index + (code - first)];
+            }
+            index += count;             /* else update for next length */
+            first += count;
+            first <<= 1;
+            code <<= 1;
+            len++;
+        }
+        left = (MAXBITS+1) - len;
+        if (left == 0) break;
+        if (s->left == 0) {
+            s->left = s->infun(s->inhow, &(s->in));
+            if (s->left == 0) longjmp(s->env, 1);       /* out of input */
+        }
+        bitbuf = *(s->in)++;
+        s->left--;
+        if (left > 8) left = 8;
+    }
+    return -9;                          /* ran out of codes */
+}
+
+/*
+ * Given a list of repeated code lengths rep[0..n-1], where each byte is a
+ * count (high four bits + 1) and a code length (low four bits), generate the
+ * list of code lengths.  This compaction reduces the size of the object code.
+ * Then given the list of code lengths length[0..n-1] representing a canonical
+ * Huffman code for n symbols, construct the tables required to decode those
+ * codes.  Those tables are the number of codes of each length, and the symbols
+ * sorted by length, retaining their original order within each length.  The
+ * return value is zero for a complete code set, negative for an over-
+ * subscribed code set, and positive for an incomplete code set.  The tables
+ * can be used if the return value is zero or positive, but they cannot be used
+ * if the return value is negative.  If the return value is zero, it is not
+ * possible for decode() using that table to return an error--any stream of
+ * enough bits will resolve to a symbol.  If the return value is positive, then
+ * it is possible for decode() using that table to return an error for received
+ * codes past the end of the incomplete lengths.
+ */
+local int construct(struct huffman *h, const unsigned char *rep, int n)
+{
+    int symbol;         /* current symbol when stepping through length[] */
+    int len;            /* current length when stepping through h->count[] */
+    int left;           /* number of possible codes left of current length */
+    short offs[MAXBITS+1];      /* offsets in symbol table for each length */
+    short length[256];  /* code lengths */
+
+    /* convert compact repeat counts into symbol bit length list */
+    symbol = 0;
+    do {
+        len = *rep++;
+        left = (len >> 4) + 1;
+        len &= 15;
+        do {
+            length[symbol++] = len;
+        } while (--left);
+    } while (--n);
+    n = symbol;
+
+    /* count number of codes of each length */
+    for (len = 0; len <= MAXBITS; len++)
+        h->count[len] = 0;
+    for (symbol = 0; symbol < n; symbol++)
+        (h->count[length[symbol]])++;   /* assumes lengths are within bounds */
+    if (h->count[0] == n)               /* no codes! */
+        return 0;                       /* complete, but decode() will fail */
+
+    /* check for an over-subscribed or incomplete set of lengths */
+    left = 1;                           /* one possible code of zero length */
+    for (len = 1; len <= MAXBITS; len++) {
+        left <<= 1;                     /* one more bit, double codes left */
+        left -= h->count[len];          /* deduct count from possible codes */
+        if (left < 0) return left;      /* over-subscribed--return negative */
+    }                                   /* left > 0 means incomplete */
+
+    /* generate offsets into symbol table for each length for sorting */
+    offs[1] = 0;
+    for (len = 1; len < MAXBITS; len++)
+        offs[len + 1] = offs[len] + h->count[len];
+
+    /*
+     * put symbols in table sorted by length, by symbol order within each
+     * length
+     */
+    for (symbol = 0; symbol < n; symbol++)
+        if (length[symbol] != 0)
+            h->symbol[offs[length[symbol]]++] = symbol;
+
+    /* return zero for complete set, positive for incomplete set */
+    return left;
+}
+
+/*
+ * Decode PKWare Compression Library stream.
+ *
+ * Format notes:
+ *
+ * - First byte is 0 if literals are uncoded or 1 if they are coded.  Second
+ *   byte is 4, 5, or 6 for the number of extra bits in the distance code.
+ *   This is the base-2 logarithm of the dictionary size minus six.
+ *
+ * - Compressed data is a combination of literals and length/distance pairs
+ *   terminated by an end code.  Literals are either Huffman coded or
+ *   uncoded bytes.  A length/distance pair is a coded length followed by a
+ *   coded distance to represent a string that occurs earlier in the
+ *   uncompressed data that occurs again at the current location.
+ *
+ * - A bit preceding a literal or length/distance pair indicates which comes
+ *   next, 0 for literals, 1 for length/distance.
+ *
+ * - If literals are uncoded, then the next eight bits are the literal, in the
+ *   normal bit order in the stream, i.e. no bit-reversal is needed. Similarly,
+ *   no bit reversal is needed for either the length extra bits or the distance
+ *   extra bits.
+ *
+ * - Literal bytes are simply written to the output.  A length/distance pair is
+ *   an instruction to copy previously uncompressed bytes to the output.  The
+ *   copy is from distance bytes back in the output stream, copying for length
+ *   bytes.
+ *
+ * - Distances pointing before the beginning of the output data are not
+ *   permitted.
+ *
+ * - Overlapped copies, where the length is greater than the distance, are
+ *   allowed and common.  For example, a distance of one and a length of 518
+ *   simply copies the last byte 518 times.  A distance of four and a length of
+ *   twelve copies the last four bytes three times.  A simple forward copy
+ *   ignoring whether the length is greater than the distance or not implements
+ *   this correctly.
+ */
+local int decomp(struct state *s)
+{
+    int lit;            /* true if literals are coded */
+    int dict;           /* log2(dictionary size) - 6 */
+    int symbol;         /* decoded symbol, extra bits for distance */
+    int len;            /* length for copy */
+    unsigned dist;      /* distance for copy */
+    int copy;           /* copy counter */
+    unsigned char *from, *to;   /* copy pointers */
+    static int virgin = 1;                              /* build tables once */
+    static short litcnt[MAXBITS+1], litsym[256];        /* litcode memory */
+    static short lencnt[MAXBITS+1], lensym[16];         /* lencode memory */
+    static short distcnt[MAXBITS+1], distsym[64];       /* distcode memory */
+    static struct huffman litcode = {litcnt, litsym};   /* length code */
+    static struct huffman lencode = {lencnt, lensym};   /* length code */
+    static struct huffman distcode = {distcnt, distsym};/* distance code */
+        /* bit lengths of literal codes */
+    static const unsigned char litlen[] = {
+        11, 124, 8, 7, 28, 7, 188, 13, 76, 4, 10, 8, 12, 10, 12, 10, 8, 23, 8,
+        9, 7, 6, 7, 8, 7, 6, 55, 8, 23, 24, 12, 11, 7, 9, 11, 12, 6, 7, 22, 5,
+        7, 24, 6, 11, 9, 6, 7, 22, 7, 11, 38, 7, 9, 8, 25, 11, 8, 11, 9, 12,
+        8, 12, 5, 38, 5, 38, 5, 11, 7, 5, 6, 21, 6, 10, 53, 8, 7, 24, 10, 27,
+        44, 253, 253, 253, 252, 252, 252, 13, 12, 45, 12, 45, 12, 61, 12, 45,
+        44, 173};
+        /* bit lengths of length codes 0..15 */
+    static const unsigned char lenlen[] = {2, 35, 36, 53, 38, 23};
+        /* bit lengths of distance codes 0..63 */
+    static const unsigned char distlen[] = {2, 20, 53, 230, 247, 151, 248};
+    static const short base[16] = {     /* base for length codes */
+        3, 2, 4, 5, 6, 7, 8, 9, 10, 12, 16, 24, 40, 72, 136, 264};
+    static const char extra[16] = {     /* extra bits for length codes */
+        0, 0, 0, 0, 0, 0, 0, 0, 1, 2, 3, 4, 5, 6, 7, 8};
+
+    /* set up decoding tables (once--might not be thread-safe) */
+    if (virgin) {
+        construct(&litcode, litlen, sizeof(litlen));
+        construct(&lencode, lenlen, sizeof(lenlen));
+        construct(&distcode, distlen, sizeof(distlen));
+        virgin = 0;
+    }
+
+    /* read header */
+    lit = bits(s, 8);
+    if (lit > 1) return -1;
+    dict = bits(s, 8);
+    if (dict < 4 || dict > 6) return -2;
+
+    /* decode literals and length/distance pairs */
+    do {
+        if (bits(s, 1)) {
+            /* get length */
+            symbol = decode(s, &lencode);
+            len = base[symbol] + bits(s, extra[symbol]);
+            if (len == 519) break;              /* end code */
+
+            /* get distance */
+            symbol = len == 2 ? 2 : dict;
+            dist = decode(s, &distcode) << symbol;
+            dist += bits(s, symbol);
+            dist++;
+            if (s->first && dist > s->next)
+                return -3;              /* distance too far back */
+
+            /* copy length bytes from distance bytes back */
+            do {
+                to = s->out + s->next;
+                from = to - dist;
+                copy = MAXWIN;
+                if (s->next < dist) {
+                    from += copy;
+                    copy = dist;
+                }
+                copy -= s->next;
+                if (copy > len) copy = len;
+                len -= copy;
+                s->next += copy;
+                do {
+                    *to++ = *from++;
+                } while (--copy);
+                if (s->next == MAXWIN) {
+                    if (s->outfun(s->outhow, s->out, s->next)) return 1;
+                    s->next = 0;
+                    s->first = 0;
+                }
+            } while (len != 0);
+        }
+        else {
+            /* get literal and write it */
+            symbol = lit ? decode(s, &litcode) : bits(s, 8);
+            s->out[s->next++] = symbol;
+            if (s->next == MAXWIN) {
+                if (s->outfun(s->outhow, s->out, s->next)) return 1;
+                s->next = 0;
+                s->first = 0;
+            }
+        }
+    } while (1);
+    return 0;
+}
+
+/* See comments in blast.h */
+int blast(blast_in infun, void *inhow, blast_out outfun, void *outhow,
+          unsigned *left, unsigned char **in)
+{
+    struct state s;             /* input/output state */
+    int err;                    /* return value */
+
+    /* initialize input state */
+    s.infun = infun;
+    s.inhow = inhow;
+    if (left != NULL && *left) {
+        s.left = *left;
+        s.in = *in;
+    }
+    else
+        s.left = 0;
+    s.bitbuf = 0;
+    s.bitcnt = 0;
+
+    /* initialize output state */
+    s.outfun = outfun;
+    s.outhow = outhow;
+    s.next = 0;
+    s.first = 1;
+
+    /* return if bits() or decode() tries to read past available input */
+    if (setjmp(s.env) != 0)             /* if came back here via longjmp(), */
+        err = 2;                        /*  then skip decomp(), return error */
+    else
+        err = decomp(&s);               /* decompress */
+
+    /* return unused input */
+    if (left != NULL)
+        *left = s.left;
+    if (in != NULL)
+        *in = s.left ? s.in : NULL;
+
+    /* write any leftover output and update the error code if needed */
+    if (err != 1 && s.next && s.outfun(s.outhow, s.out, s.next) && err == 0)
+        err = 1;
+    return err;
+}

vendor/tcl/compat/zlib/contrib/blast/blast.h

@@ -0,0 +1,84 @@
+/* blast.h -- interface for blast.c
+  Copyright (C) 2003, 2012, 2013 Mark Adler
+  version 1.3, 24 Aug 2013
+
+  This software is provided 'as-is', without any express or implied
+  warranty.  In no event will the author be held liable for any damages
+  arising from the use of this software.
+
+  Permission is granted to anyone to use this software for any purpose,
+  including commercial applications, and to alter it and redistribute it
+  freely, subject to the following restrictions:
+
+  1. The origin of this software must not be misrepresented; you must not
+     claim that you wrote the original software. If you use this software
+     in a product, an acknowledgment in the product documentation would be
+     appreciated but is not required.
+  2. Altered source versions must be plainly marked as such, and must not be
+     misrepresented as being the original software.
+  3. This notice may not be removed or altered from any source distribution.
+
+  Mark Adler    madler@alumni.caltech.edu
+ */
+
+#define local static            /* for local function definitions */
+
+/*
+ * blast() decompresses the PKWare Data Compression Library (DCL) compressed
+ * format.  It provides the same functionality as the explode() function in
+ * that library.  (Note: PKWare overused the "implode" verb, and the format
+ * used by their library implode() function is completely different and
+ * incompatible with the implode compression method supported by PKZIP.)
+ *
+ * The binary mode for stdio functions should be used to assure that the
+ * compressed data is not corrupted when read or written.  For example:
+ * fopen(..., "rb") and fopen(..., "wb").
+ */
+
+
+typedef unsigned (*blast_in)(void *how, unsigned char **buf);
+typedef int (*blast_out)(void *how, unsigned char *buf, unsigned len);
+/* Definitions for input/output functions passed to blast().  See below for
+ * what the provided functions need to do.
+ */
+
+
+int blast(blast_in infun, void *inhow, blast_out outfun, void *outhow,
+          unsigned *left, unsigned char **in);
+/* Decompress input to output using the provided infun() and outfun() calls.
+ * On success, the return value of blast() is zero.  If there is an error in
+ * the source data, i.e. it is not in the proper format, then a negative value
+ * is returned.  If there is not enough input available or there is not enough
+ * output space, then a positive error is returned.
+ *
+ * The input function is invoked: len = infun(how, &buf), where buf is set by
+ * infun() to point to the input buffer, and infun() returns the number of
+ * available bytes there.  If infun() returns zero, then blast() returns with
+ * an input error.  (blast() only asks for input if it needs it.)  inhow is for
+ * use by the application to pass an input descriptor to infun(), if desired.
+ *
+ * If left and in are not NULL and *left is not zero when blast() is called,
+ * then the *left bytes at *in are consumed for input before infun() is used.
+ *
+ * The output function is invoked: err = outfun(how, buf, len), where the bytes
+ * to be written are buf[0..len-1].  If err is not zero, then blast() returns
+ * with an output error.  outfun() is always called with len <= 4096.  outhow
+ * is for use by the application to pass an output descriptor to outfun(), if
+ * desired.
+ *
+ * If there is any unused input, *left is set to the number of bytes that were
+ * read and *in points to them.  Otherwise *left is set to zero and *in is set
+ * to NULL.  If left or in are NULL, then they are not set.
+ *
+ * The return codes are:
+ *
+ *   2:  ran out of input before completing decompression
+ *   1:  output error before completing decompression
+ *   0:  successful decompression
+ *  -1:  literal flag not zero or one
+ *  -2:  dictionary size not in 4..6
+ *  -3:  distance is too far back
+ *
+ * At the bottom of blast.c is an example program that uses blast() that can be
+ * compiled to produce a command-line decompression filter by defining TEST.
+ */

vendor/tcl/compat/zlib/contrib/blast/blastConfig.cmake.in

@@ -0,0 +1,18 @@
+@PACKAGE_INIT@
+
+set(_blast_supported_components "shared" "static")
+
+if(blast_FIND_COMPONENTS)
+    foreach(_comp ${blast_FIND_COMPONENTS})
+        if(NOT _comp IN_LIST _blast_supported_components)
+            set(blast_FOUND False)
+            set(blast_NOT_FOUND_MESSAGE "Unsupported component: ${_comp}")
+        endif(NOT _comp IN_LIST _blast_supported_components)
+
+        include("${CMAKE_CURRENT_LIST_DIR}/blast-${_comp}.cmake")
+    endforeach(_comp ${blast_FIND_COMPONENTS})
+else(blast_FIND_COMPONENTS)
+    foreach(_component_config IN LISTS _blast_supported_components)
+        include("${CMAKE_CURRENT_LIST_DIR}/blast-${_component_config}.cmake")
+    endforeach(_component_config IN LISTS _blast_supported_components)
+endif(blast_FIND_COMPONENTS)

vendor/tcl/compat/zlib/contrib/blast/test.txt

@@ -0,0 +1 @@
+AIAIAIAIAIAIA

vendor/tcl/compat/zlib/contrib/blast/test/CMakeLists.txt

@@ -0,0 +1,193 @@
+# if we are built from with zlib, use this path's)
+if(DEFINED ZLIB_BUILD_BLAST)
+    set(WORK_DIR ${zlib_BINARY_DIR})
+    set(inst_setup zlib_install)
+else(DEFINED ZLIB_BUILD_BLAST)
+    set(WORK_DIR ${blast_BINARY_DIR})
+    set(inst_setup zlib_blast_install)
+    set(ZLIB_ARG "-DZLIB_DIR=${ZLIB_DIR}")
+
+    add_test(
+        NAME zlib_blast_install
+        COMMAND ${CMAKE_COMMAND} --install ${blast_BINARY_DIR} --prefix
+                ${CMAKE_CURRENT_BINARY_DIR}/test_install --config $<CONFIG>
+        WORKING_DIRECTORY ${blast_BINARY_DIR})
+
+    set_tests_properties(zlib_blast_install
+        PROPERTIES
+            FIXTURES_SETUP zlib_blast_install)
+endif(DEFINED ZLIB_BUILD_BLAST)
+
+file(MAKE_DIRECTORY ${CMAKE_CURRENT_BINARY_DIR}/findpackage_test)
+file(MAKE_DIRECTORY ${CMAKE_CURRENT_BINARY_DIR}/add_subdirectory_test)
+file(MAKE_DIRECTORY ${CMAKE_CURRENT_BINARY_DIR}/add_subdirectory_exclude_test)
+
+configure_file(
+    ${CMAKE_CURRENT_SOURCE_DIR}/find_package_test.cmake.in
+    ${CMAKE_CURRENT_BINARY_DIR}/findpackage_test/CMakeLists.txt @ONLY)
+
+configure_file(
+    ${CMAKE_CURRENT_SOURCE_DIR}/add_subdirectory_test.cmake.in
+    ${CMAKE_CURRENT_BINARY_DIR}/add_subdirectory_test/CMakeLists.txt @ONLY)
+
+configure_file(
+    ${CMAKE_CURRENT_SOURCE_DIR}/add_subdirectory_exclude_test.cmake.in
+    ${CMAKE_CURRENT_BINARY_DIR}/add_subdirectory_exclude_test/CMakeLists.txt
+    @ONLY)
+
+configure_file(
+    ${CMAKE_CURRENT_SOURCE_DIR}/find_package_no_components_test.cmake.in
+    ${CMAKE_CURRENT_BINARY_DIR}/findpackage_no_components_test/CMakeLists.txt
+    @ONLY)
+
+configure_file(
+    ${CMAKE_CURRENT_SOURCE_DIR}/find_package_wrong_components_test.cmake.in
+    ${CMAKE_CURRENT_BINARY_DIR}/findpackage_wrong_components_test/CMakeLists.txt
+    @ONLY)
+
+# CMAKE_GENERATOR_PLATFORM doesn't work in the if
+set(GENERATOR ${CMAKE_GENERATOR_PLATFORM})
+
+if(GENERATOR)
+    set(PLATFORM "-A ${GENERATOR}")
+endif(GENERATOR)
+
+#
+# findpackage_test
+#
+add_test(
+    NAME zlib_blast_find_package_configure
+    COMMAND
+        ${CMAKE_COMMAND} ${PLATFORM}
+        -B${CMAKE_CURRENT_BINARY_DIR}/findpackage_test_build
+        -DCMAKE_BUILD_TYPE=$<CONFIG>
+        -DCMAKE_C_COMPILER=${CMAKE_C_COMPILER}
+        -DCMAKE_C_FLAGS=${CMAKE_C_FLAGS}
+        -DCMAKE_INSTALL_PREFIX=${WORK_DIR}/test/test_install ${ZLIB_ARG}
+        --fresh
+        -G "${CMAKE_GENERATOR}"
+        -S${CMAKE_CURRENT_BINARY_DIR}/findpackage_test)
+
+add_test(
+    NAME zlib_blast_find_package_build
+    COMMAND ${CMAKE_COMMAND} --build . --config $<CONFIG>
+    WORKING_DIRECTORY ${CMAKE_CURRENT_BINARY_DIR}/findpackage_test_build)
+
+set_tests_properties(
+    zlib_blast_find_package_configure
+        PROPERTIES
+            FIXTURES_REQUIRED ${inst_setup}
+            FIXTURES_SETUP blast_fp_config)
+
+set_tests_properties(zlib_blast_find_package_build
+    PROPERTIES
+        FIXTURES_REQUIRED blast_fp_config)
+
+#
+# add_subdirectory_test
+#
+add_test(
+    NAME zlib_blast_add_subdirectory_configure
+    COMMAND
+        ${CMAKE_COMMAND} ${PLATFORM}
+        -B${CMAKE_CURRENT_BINARY_DIR}/add_subdirectory_test_build
+        -DCMAKE_BUILD_TYPE=$<CONFIG>
+        -DCMAKE_C_COMPILER=${CMAKE_C_COMPILER}
+        -DCMAKE_C_FLAGS=${CMAKE_C_FLAGS}
+        -DCMAKE_INSTALL_PREFIX=${WORK_DIR}/test/test_install ${ZLIB_ARG}
+        --fresh
+        -G "${CMAKE_GENERATOR}"
+        -S${CMAKE_CURRENT_BINARY_DIR}/add_subdirectory_test)
+
+add_test(
+    NAME zlib_blast_add_subdirectory_build
+    COMMAND ${CMAKE_COMMAND} --build . --config $<CONFIG>
+    WORKING_DIRECTORY ${CMAKE_CURRENT_BINARY_DIR}/add_subdirectory_test_build)
+
+set_tests_properties(
+    zlib_blast_add_subdirectory_configure
+    PROPERTIES
+        FIXTURES_REQUIRED ${inst_setup}
+        FIXTURES_SETUP blast_as_config)
+
+set_tests_properties(zlib_blast_add_subdirectory_build
+    PROPERTIES
+        FIXTURES_REQUIRED blast_as_config)
+
+#
+# add_subdirectory_exclude_test
+#
+add_test(
+    NAME zlib_blast_add_subdirectory_exclude_configure
+    COMMAND
+        ${CMAKE_COMMAND} ${PLATFORM}
+        -B${CMAKE_CURRENT_BINARY_DIR}/add_subdirectory_exclude_test_build
+        -DCMAKE_BUILD_TYPE=$<CONFIG>
+        -DCMAKE_C_COMPILER=${CMAKE_C_COMPILER}
+        -DCMAKE_C_FLAGS=${CMAKE_C_FLAGS}
+        -DCMAKE_INSTALL_PREFIX=${WORK_DIR}/test/test_install ${ZLIB_ARG}
+        --fresh
+        -G "${CMAKE_GENERATOR}"
+        -S${CMAKE_CURRENT_BINARY_DIR}/add_subdirectory_exclude_test)
+
+add_test(
+    NAME zlib_blast_add_subdirectory_exclude_build
+    COMMAND ${CMAKE_COMMAND} --build . --config $<CONFIG>
+    WORKING_DIRECTORY
+        ${CMAKE_CURRENT_BINARY_DIR}/add_subdirectory_exclude_test_build)
+
+set_tests_properties(zlib_blast_add_subdirectory_exclude_configure
+    PROPERTIES
+        FIXTURES_REQUIRED ${inst_setup}
+        FIXTURES_SETUP blast_asx_config)
+
+set_tests_properties(zlib_blast_add_subdirectory_exclude_build
+    PROPERTIES
+        FIXTURES_REQUIRED blast_asx_config)
+
+#
+# findpackage_no_components_test
+#
+add_test(
+    NAME zlib_blast_find_package_no_components_configure
+    COMMAND
+        ${CMAKE_COMMAND} ${PLATFORM}
+        -B${CMAKE_CURRENT_BINARY_DIR}/findpackage_no_components_test_build
+        -DCMAKE_BUILD_TYPE=$<CONFIG> -DCMAKE_C_COMPILER=${CMAKE_C_COMPILER}
+        -DCMAKE_C_FLAGS=${CMAKE_C_FLAGS}
+        -DCMAKE_INSTALL_PREFIX=${WORK_DIR}/test/test_install ${ZLIB_ARG}
+        --fresh
+        -G "${CMAKE_GENERATOR}"
+        -S${CMAKE_CURRENT_BINARY_DIR}/findpackage_no_components_test)
+
+set_tests_properties(
+    zlib_blast_find_package_no_components_configure
+        PROPERTIES
+            FIXTURES_REQUIRED ${inst_setup})
+
+if(NOT ZLIB_BLAST_BUILD_SHARED OR NOT ZLIB_BLAST_BUILD_STATIC)
+    set_tests_properties(zlib_blast_find_package_no_components_configure
+        PROPERTIES
+            WILL_FAIL TRUE)
+endif(NOT ZLIB_BLAST_BUILD_SHARED OR NOT ZLIB_BLAST_BUILD_STATIC)
+
+#
+# findpackage_wrong_components_test
+#
+add_test(
+    NAME zlib_blast_find_package_wrong_components_configure
+    COMMAND
+        ${CMAKE_COMMAND} ${PLATFORM}
+        -B${CMAKE_CURRENT_BINARY_DIR}/findpackage_wrong_components_test_build
+        -DCMAKE_BUILD_TYPE=$<CONFIG> -DCMAKE_C_COMPILER=${CMAKE_C_COMPILER}
+        -DCMAKE_C_FLAGS=${CMAKE_C_FLAGS}
+        -DCMAKE_INSTALL_PREFIX=${WORK_DIR}/test/test_install ${ZLIB_ARG}
+        --fresh
+        -G "${CMAKE_GENERATOR}"
+        -S${CMAKE_CURRENT_BINARY_DIR}/findpackage_wrong_components_test)
+
+set_tests_properties(zlib_blast_find_package_wrong_components_configure
+    PROPERTIES
+        FIXTURES_REQUIRED ${inst_setup}
+        WILL_FAIL TRUE)
+

vendor/tcl/compat/zlib/contrib/blast/test/add_subdirectory_exclude_test.cmake.in

@@ -0,0 +1,27 @@
+cmake_minimum_required(VERSION 3.12...3.31)
+
+project(
+    blast_find_package
+    LANGUAGES C
+    VERSION @blast_VERSION@)
+
+option(ZLIB_BLAST_BUILD_SHARED "" @ZLIB_BLAST_BUILD_SHARED@)
+option(ZLIB_BLAST_BUILD_STATIC "" @ZLIB_BLAST_BUILD_STATIC@)
+option(ZLIB_BLAST_BUILD_TESTING "" @ZLIB_BLAST_BUILD_TESTING@)
+
+add_subdirectory(@blast_SOURCE_DIR@
+    ${CMAKE_CURRENT_BINARY_DIR}/blast
+    EXCLUDE_FROM_ALL)
+
+set(BLAST_SRCS
+    @blast_SOURCE_DIR@/blast-test.c)
+
+if(ZLIB_BLAST_BUILD_SHARED)
+    add_executable(test_example ${BLAST_SRCS})
+    target_link_libraries(test_example BLAST::BLAST)
+endif(ZLIB_BLAST_BUILD_SHARED)
+
+if(ZLIB_BLAST_BUILD_STATIC)
+    add_executable(test_example_static ${BLAST_SRCS})
+    target_link_libraries(test_example_static BLAST::BLASTSTATIC)
+endif(ZLIB_BLAST_BUILD_STATIC)

vendor/tcl/compat/zlib/contrib/blast/test/add_subdirectory_test.cmake.in

@@ -0,0 +1,25 @@
+cmake_minimum_required(VERSION 3.12...3.31)
+
+project(
+    blast_find_package
+    LANGUAGES C
+    VERSION @blast_VERSION@)
+
+option(ZLIB_BLAST_BUILD_SHARED "" @ZLIB_BLAST_BUILD_SHARED@)
+option(ZLIB_BLAST_BUILD_STATIC "" @ZLIB_BLAST_BUILD_STATIC@)
+option(ZLIB_BLAST_BUILD_TESTING "" @ZLIB_BLAST_BUILD_TESTING@)
+
+add_subdirectory(@blast_SOURCE_DIR@ ${CMAKE_CURRENT_BINARY_DIR}/blast)
+
+set(BLAST_SRCS
+    @blast_SOURCE_DIR@/blast-test.c)
+
+if(ZLIB_BLAST_BUILD_SHARED)
+    add_executable(test_example ${BLAST_SRCS})
+    target_link_libraries(test_example BLAST::BLAST)
+endif(ZLIB_BLAST_BUILD_SHARED)
+
+if(ZLIB_BLAST_BUILD_STATIC)
+    add_executable(test_example_static ${BLAST_SRCS})
+    target_link_libraries(test_example_static BLAST::BLASTSTATIC)
+endif(ZLIB_BLAST_BUILD_STATIC)

vendor/tcl/compat/zlib/contrib/blast/test/find_package_no_components_test.cmake.in

@@ -0,0 +1,24 @@
+cmake_minimum_required(VERSION 3.12...3.31)
+
+project(
+    blast_find_package
+    LANGUAGES C
+    VERSION @blast_VERSION@)
+
+option(ZLIB_BLAST_BUILD_SHARED "" @ZLIB_BLAST_BUILD_SHARED@)
+option(ZLIB_BLAST_BUILD_STATIC "" @ZLIB_BLAST_BUILD_STATIC@)
+
+find_package(blast REQUIRED CONFIG)
+
+set(BLAST_SRCS
+    @blast_SOURCE_DIR@/blast-test.c)
+
+if(ZLIB_BLAST_BUILD_SHARED)
+    add_executable(test_example ${BLAST_SRCS})
+    target_link_libraries(test_example BLAST::BLAST)
+endif(ZLIB_BLAST_BUILD_SHARED)
+
+if(ZLIB_BLAST_BUILD_STATIC)
+    add_executable(test_example_static ${BLAST_SRCS})
+    target_link_libraries(test_example_static BLAST::BLASTSTATIC)
+endif(ZLIB_BLAST_BUILD_STATIC)

vendor/tcl/compat/zlib/contrib/blast/test/find_package_test.cmake.in

@@ -0,0 +1,24 @@
+cmake_minimum_required(VERSION 3.12...3.31)
+
+project(
+    blast_find_package
+    LANGUAGES C
+    VERSION @blast_VERSION@)
+
+option(ZLIB_BLAST_BUILD_SHARED "" @ZLIB_BLAST_BUILD_SHARED@)
+option(ZLIB_BLAST_BUILD_STATIC "" @ZLIB_BLAST_BUILD_STATIC@)
+
+set(BLAST_SRCS
+    @blast_SOURCE_DIR@/blast-test.c)
+
+if(ZLIB_BLAST_BUILD_SHARED)
+    find_package(blast REQUIRED COMPONENTS shared CONFIG)
+    add_executable(test_example ${BLAST_SRCS})
+    target_link_libraries(test_example BLAST::BLAST)
+endif(ZLIB_BLAST_BUILD_SHARED)
+
+if(ZLIB_BLAST_BUILD_STATIC)
+    find_package(blast REQUIRED COMPONENTS static CONFIG)
+    add_executable(test_example_static ${BLAST_SRCS})
+    target_link_libraries(test_example_static BLAST::BLASTSTATIC)
+endif(ZLIB_BLAST_BUILD_STATIC)

vendor/tcl/compat/zlib/contrib/blast/test/find_package_wrong_components_test.cmake.in

@@ -0,0 +1,24 @@
+cmake_minimum_required(VERSION 3.12...3.31)
+
+project(
+    blast_find_package
+    LANGUAGES C
+    VERSION @blast_VERSION@)
+
+option(ZLIB_BLAST_BUILD_SHARED "" @ZLIB_BLAST_BUILD_SHARED@)
+option(ZLIB_BLAST_BUILD_STATIC "" @ZLIB_BLAST_BUILD_STATIC@)
+
+find_package(blast REQUIRED COMPONENTS wrong CONFIG)
+
+set(BLAST_SRCS
+    @blast_SOURCE_DIR@/blast-test.c)
+
+if(ZLIB_BLAST_BUILD_SHARED)
+    add_executable(test_example ${BLAST_SRCS})
+    target_link_libraries(test_example BLAST::BLAST)
+endif(ZLIB_BLAST_BUILD_SHARED)
+
+if(ZLIB_BLAST_BUILD_STATIC)
+    add_executable(test_example_static ${BLAST_SRCS})
+    target_link_libraries(test_example_static BLAST::BLASTSTATIC)
+endif(ZLIB_BLAST_BUILD_STATIC)

vendor/tcl/compat/zlib/contrib/blast/tester.cmake

@@ -0,0 +1,28 @@
+cmake_minimum_required(VERSION 3.12...3.31)
+
+#CMAKE_ARGV0 = ${CMAKE_COMMAND}
+#CMAKE_ARGV1 = -P
+#CMAKE_ARGV2 = ${CMAKE_CURRENT_SOURCE_DIR}/tester.cmake
+#CMAKE_ARGV3 = "$<TARGET_FILE:blast-test>"
+#CMAKE_ARGV4 = "${CMAKE_CURRENT_SOURCE_DIR}"
+#CMAKE_ARGV5 = "${CMAKE_CURRENT_BINARY_DIR}")
+
+execute_process(COMMAND ${CMAKE_ARGV3}
+                INPUT_FILE "${CMAKE_ARGV4}/test.pk"
+                OUTPUT_FILE "${CMAKE_ARGV5}/output.txt"
+                RESULT_VARIABLE RESULT)
+
+if(RESULT)
+    message(FATAL_ERROR "Command exitited with: ${RESULT}")
+endif(RESULT)
+
+execute_process(COMMAND ${CMAKE_ARGV0} -E compare_files
+                        "${CMAKE_ARGV4}/test.txt"
+                        "${CMAKE_ARGV5}/output.txt"
+                RESULT_VARIABLE RESULT)
+
+file(REMOVE "${CMAKE_ARGV5}/output.txt")
+
+if(RESULT)
+    message(FATAL_ERROR "Files differ")
+endif(RESULT)

vendor/tcl/compat/zlib/contrib/crc32vx/CMakeLists.txt

@@ -0,0 +1,67 @@
+# check if we compile for IBM s390x
+#
+CHECK_C_SOURCE_COMPILES("
+#ifndef __s390x__
+    #error
+#endif
+int main() {return 0;}
+" HAS_S390X_SUPPORT)
+
+#
+# Check for IBM S390X - VX extensions
+#
+if(ZLIB_WITH_CRC32VX AND HAS_S390X_SUPPORT)
+    # preset the compiler specific flags
+    if (CMAKE_C_COMPILER_ID STREQUAL "Clang")
+        set(VGFMAFLAG "-fzvector")
+    else()
+        set(VGFMAFLAG "-mzarch")
+    endif(CMAKE_C_COMPILER_ID STREQUAL "Clang")
+
+    set(S390X_VX_TEST
+        "#ifndef __s390x__ \n\
+        #error \n\
+        #endif \n\
+        #include <vecintrin.h> \n\
+        int main(void) { \
+           unsigned long long a __attribute__((vector_size(16))) = { 0 }; \
+           unsigned long long b __attribute__((vector_size(16))) = { 0 }; \
+           unsigned char c __attribute__((vector_size(16))) = { 0 }; \
+           c = vec_gfmsum_accum_128(a, b, c); \
+           return c[0]; \
+        }")
+
+    # cflags already contains a valid march
+    set(CMAKE_REQUIRED_FLAGS "${VGFMAFLAG}")
+    check_c_source_compiles("${S390X_VX_TEST}" HAS_S390X_VX_SUPPORT)
+    unset(CMAKE_REQUIRED_FLAGS)
+
+    # or set march for our compile units
+    if(NOT HAS_S390X_VX_SUPPORT)
+        set(CMAKE_REQUIRED_FLAGS "${VGFMAFLAG} -march=z13")
+        check_c_source_compiles("${S390X_VX_TEST}" HAS_Z13_S390X_VX_SUPPORT)
+        unset(CMAKE_REQUIRED_FLAGS )
+        list(APPEND VGFMAFLAG "-march=z13")
+    endif(NOT HAS_S390X_VX_SUPPORT)
+
+    # prepare compiling for s390x
+    if(HAS_S390X_VX_SUPPORT OR HAS_Z13_S390X_VX_SUPPORT)
+        if(ZLIB_BUILD_SHARED)
+            target_sources(zlib
+                PRIVATE
+                    crc32_vx.c
+                    crc32_vx_hooks.h)
+            target_compile_definitions(zlib PUBLIC -DHAVE_S390X_VX=1)
+        endif(ZLIB_BUILD_SHARED)
+        if(ZLIB_BUILD_STATIC)
+            target_sources(zlibstatic
+                PRIVATE
+                    crc32_vx.c
+                    crc32_vx_hooks.h)
+            target_compile_definitions(zlibstatic PUBLIC -DHAVE_S390X_VX=1)
+        endif(ZLIB_BUILD_STATIC)
+        set_source_files_properties(
+            crc32_vx.c
+            PROPERTIES COMPILE_OPTIONS "${VGFMAFLAG}")
+    endif(HAS_S390X_VX_SUPPORT OR HAS_Z13_S390X_VX_SUPPORT)
+endif(ZLIB_WITH_CRC32VX AND HAS_S390X_SUPPORT)

vendor/tcl/compat/zlib/contrib/crc32vx/README

@@ -0,0 +1,9 @@
+IBM Z mainframes starting from version z13 provide vector instructions, which 
+allows vectorization of crc32. This extension is build by default when targeting
+ibm s390x. However this extension can disabled if desired:
+
+    # for configure build
+    $ ./configure --disable-crcvx
+
+    # for cmake build
+    $ cmake .. -DZLIB_CRC32VX=off

vendor/tcl/compat/zlib/contrib/crc32vx/crc32_vx.c

@@ -0,0 +1,254 @@
+/*
+ * Hardware-accelerated CRC-32 variants for Linux on z Systems
+ *
+ * Use the z/Architecture Vector Extension Facility to accelerate the
+ * computing of bitreflected CRC-32 checksums.
+ *
+ * This CRC-32 implementation algorithm is bitreflected and processes
+ * the least-significant bit first (Little-Endian).
+ *
+ * This code was originally written by Hendrik Brueckner
+ * <brueckner@linux.vnet.ibm.com> for use in the Linux kernel and has been
+ * relicensed under the zlib license.
+ */
+#define Z_ONCE
+#include "../../zutil.h"
+#include "crc32_vx_hooks.h"
+
+#include <stdint.h>
+#include <stdio.h>
+#include <vecintrin.h>
+#include <sys/auxv.h>
+
+#ifdef __clang__
+#  if ((__clang_major__ == 18) || (__clang_major__ == 19 && (__clang_minor__ < 1 || (__clang_minor__ == 1 && __clang_patchlevel__ < 2))))
+# error crc32_vx optimizations are broken due to compiler bug in Clang versions: 18.0.0 <= clang_version < 19.1.2. \
+        Either disable the zlib crc32_vx optimization, or switch to another compiler/compiler version.
+#  endif
+#endif
+
+#define VX_MIN_LEN 64
+#define VX_ALIGNMENT 16L
+#define VX_ALIGN_MASK (VX_ALIGNMENT - 1)
+
+typedef unsigned char uv16qi __attribute__((vector_size(16)));
+typedef unsigned int uv4si __attribute__((vector_size(16)));
+typedef unsigned long long uv2di __attribute__((vector_size(16)));
+
+local uint32_t crc32_le_vgfm_16(uint32_t crc, const unsigned char *buf, size_t len) {
+    /*
+     * The CRC-32 constant block contains reduction constants to fold and
+     * process particular chunks of the input data stream in parallel.
+     *
+     * For the CRC-32 variants, the constants are precomputed according to
+     * these definitions:
+     *
+     *      R1 = [(x4*128+32 mod P'(x) << 32)]' << 1
+     *      R2 = [(x4*128-32 mod P'(x) << 32)]' << 1
+     *      R3 = [(x128+32 mod P'(x) << 32)]'   << 1
+     *      R4 = [(x128-32 mod P'(x) << 32)]'   << 1
+     *      R5 = [(x64 mod P'(x) << 32)]'       << 1
+     *      R6 = [(x32 mod P'(x) << 32)]'       << 1
+     *
+     *      The bitreflected Barret reduction constant, u', is defined as
+     *      the bit reversal of floor(x**64 / P(x)).
+     *
+     *      where P(x) is the polynomial in the normal domain and the P'(x) is the
+     *      polynomial in the reversed (bitreflected) domain.
+     *
+     * CRC-32 (IEEE 802.3 Ethernet, ...) polynomials:
+     *
+     *      P(x)  = 0x04C11DB7
+     *      P'(x) = 0xEDB88320
+     */
+    const uv16qi perm_le2be = {15, 14, 13, 12, 11, 10, 9, 8, 7, 6, 5, 4, 3, 2, 1, 0};  /* BE->LE mask */
+    const uv2di r2r1 = {0x1C6E41596, 0x154442BD4};                                     /* R2, R1 */
+    const uv2di r4r3 = {0x0CCAA009E, 0x1751997D0};                                     /* R4, R3 */
+    const uv2di r5 = {0, 0x163CD6124};                                                 /* R5 */
+    const uv2di ru_poly = {0, 0x1F7011641};                                            /* u' */
+    const uv2di crc_poly = {0, 0x1DB710641};                                           /* P'(x) << 1 */
+
+    /*
+     * Load the initial CRC value.
+     *
+     * The CRC value is loaded into the rightmost word of the
+     * vector register and is later XORed with the LSB portion
+     * of the loaded input data.
+     */
+    uv2di v0 = {0, 0};
+    v0 = (uv2di)vec_insert(crc, (uv4si)v0, 3);
+
+    /* Load a 64-byte data chunk and XOR with CRC */
+    uv2di v1 = vec_perm(((uv2di *)buf)[0], ((uv2di *)buf)[0], perm_le2be);
+    uv2di v2 = vec_perm(((uv2di *)buf)[1], ((uv2di *)buf)[1], perm_le2be);
+    uv2di v3 = vec_perm(((uv2di *)buf)[2], ((uv2di *)buf)[2], perm_le2be);
+    uv2di v4 = vec_perm(((uv2di *)buf)[3], ((uv2di *)buf)[3], perm_le2be);
+
+    v1 ^= v0;
+    buf += 64;
+    len -= 64;
+
+    while (len >= 64) {
+        /* Load the next 64-byte data chunk */
+        uv16qi part1 = vec_perm(((uv16qi *)buf)[0], ((uv16qi *)buf)[0], perm_le2be);
+        uv16qi part2 = vec_perm(((uv16qi *)buf)[1], ((uv16qi *)buf)[1], perm_le2be);
+        uv16qi part3 = vec_perm(((uv16qi *)buf)[2], ((uv16qi *)buf)[2], perm_le2be);
+        uv16qi part4 = vec_perm(((uv16qi *)buf)[3], ((uv16qi *)buf)[3], perm_le2be);
+
+        /*
+         * Perform a GF(2) multiplication of the doublewords in V1 with
+         * the R1 and R2 reduction constants in V0.  The intermediate result
+         * is then folded (accumulated) with the next data chunk in PART1 and
+         * stored in V1. Repeat this step for the register contents
+         * in V2, V3, and V4 respectively.
+         */
+        v1 = (uv2di)vec_gfmsum_accum_128(r2r1, v1, part1);
+        v2 = (uv2di)vec_gfmsum_accum_128(r2r1, v2, part2);
+        v3 = (uv2di)vec_gfmsum_accum_128(r2r1, v3, part3);
+        v4 = (uv2di)vec_gfmsum_accum_128(r2r1, v4, part4);
+
+        buf += 64;
+        len -= 64;
+    }
+
+    /*
+     * Fold V1 to V4 into a single 128-bit value in V1.  Multiply V1 with R3
+     * and R4 and accumulating the next 128-bit chunk until a single 128-bit
+     * value remains.
+     */
+    v1 = (uv2di)vec_gfmsum_accum_128(r4r3, v1, (uv16qi)v2);
+    v1 = (uv2di)vec_gfmsum_accum_128(r4r3, v1, (uv16qi)v3);
+    v1 = (uv2di)vec_gfmsum_accum_128(r4r3, v1, (uv16qi)v4);
+
+    while (len >= 16) {
+        /* Load next data chunk */
+        v2 = vec_perm(*(uv2di *)buf, *(uv2di *)buf, perm_le2be);
+
+        /* Fold next data chunk */
+        v1 = (uv2di)vec_gfmsum_accum_128(r4r3, v1, (uv16qi)v2);
+
+        buf += 16;
+        len -= 16;
+    }
+
+    /*
+     * Set up a vector register for byte shifts.  The shift value must
+     * be loaded in bits 1-4 in byte element 7 of a vector register.
+     * Shift by 8 bytes: 0x40
+     * Shift by 4 bytes: 0x20
+     */
+    uv16qi v9 = {0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0};
+    v9 = vec_insert((unsigned char)0x40, v9, 7);
+
+    /*
+     * Prepare V0 for the next GF(2) multiplication: shift V0 by 8 bytes
+     * to move R4 into the rightmost doubleword and set the leftmost
+     * doubleword to 0x1.
+     */
+    v0 = vec_srb(r4r3, (uv2di)v9);
+    v0[0] = 1;
+
+    /*
+     * Compute GF(2) product of V1 and V0.  The rightmost doubleword
+     * of V1 is multiplied with R4.  The leftmost doubleword of V1 is
+     * multiplied by 0x1 and is then XORed with rightmost product.
+     * Implicitly, the intermediate leftmost product becomes padded
+     */
+    v1 = (uv2di)vec_gfmsum_128(v0, v1);
+
+    /*
+     * Now do the final 32-bit fold by multiplying the rightmost word
+     * in V1 with R5 and XOR the result with the remaining bits in V1.
+     *
+     * To achieve this by a single VGFMAG, right shift V1 by a word
+     * and store the result in V2 which is then accumulated.  Use the
+     * vector unpack instruction to load the rightmost half of the
+     * doubleword into the rightmost doubleword element of V1; the other
+     * half is loaded in the leftmost doubleword.
+     * The vector register with CONST_R5 contains the R5 constant in the
+     * rightmost doubleword and the leftmost doubleword is zero to ignore
+     * the leftmost product of V1.
+     */
+    v9 = vec_insert((unsigned char)0x20, v9, 7);
+    v2 = vec_srb(v1, (uv2di)v9);
+    v1 = vec_unpackl((uv4si)v1);  /* Split rightmost doubleword */
+    v1 = (uv2di)vec_gfmsum_accum_128(r5, v1, (uv16qi)v2);
+
+    /*
+     * Apply a Barret reduction to compute the final 32-bit CRC value.
+     *
+     * The input values to the Barret reduction are the degree-63 polynomial
+     * in V1 (R(x)), degree-32 generator polynomial, and the reduction
+     * constant u.  The Barret reduction result is the CRC value of R(x) mod
+     * P(x).
+     *
+     * The Barret reduction algorithm is defined as:
+     *
+     *    1. T1(x) = floor( R(x) / x^32 ) GF2MUL u
+     *    2. T2(x) = floor( T1(x) / x^32 ) GF2MUL P(x)
+     *    3. C(x)  = R(x) XOR T2(x) mod x^32
+     *
+     *  Note: The leftmost doubleword of vector register containing
+     *  CONST_RU_POLY is zero and, thus, the intermediate GF(2) product
+     *  is zero and does not contribute to the final result.
+     */
+
+    /* T1(x) = floor( R(x) / x^32 ) GF2MUL u */
+    v2 = vec_unpackl((uv4si)v1);
+    v2 = (uv2di)vec_gfmsum_128(ru_poly, v2);
+
+    /*
+     * Compute the GF(2) product of the CRC polynomial with T1(x) in
+     * V2 and XOR the intermediate result, T2(x), with the value in V1.
+     * The final result is stored in word element 2 of V2.
+     */
+    v2 = vec_unpackl((uv4si)v2);
+    v2 = (uv2di)vec_gfmsum_accum_128(crc_poly, v2, (uv16qi)v1);
+
+    return ((uv4si)v2)[2];
+}
+
+
+local unsigned long s390_crc32_vx(unsigned long crc, const unsigned char FAR *buf, z_size_t len)
+{
+    uintptr_t prealign, aligned, remaining;
+
+    if (buf == Z_NULL) return 0UL;
+
+    if (len < VX_MIN_LEN + VX_ALIGN_MASK)
+        return crc32_z(crc, buf, len);
+
+    if ((uintptr_t)buf & VX_ALIGN_MASK) {
+        prealign = VX_ALIGNMENT - ((uintptr_t)buf & VX_ALIGN_MASK);
+        len -= prealign;
+        crc = crc32_z(crc, buf, prealign);
+        buf += prealign;
+    }
+    aligned = len & ~VX_ALIGN_MASK;
+    remaining = len & VX_ALIGN_MASK;
+
+    crc = crc32_le_vgfm_16(crc ^ 0xffffffff, buf, (size_t)aligned) ^ 0xffffffff;
+
+    if (remaining)
+        crc = crc32_z(crc, buf + aligned, remaining);
+
+    return crc;
+}
+
+local z_once_t s390_crc32_made = Z_ONCE_INIT;
+local void s390_crc32_setup() {
+    unsigned long hwcap = getauxval(AT_HWCAP);
+
+    if (hwcap & HWCAP_S390_VX)
+        crc32_z_hook = s390_crc32_vx;
+    else
+        crc32_z_hook = crc32_z;
+}
+
+local unsigned long s390_crc32_init(unsigned long crc, const unsigned char FAR *buf, z_size_t len)
+{
+    z_once(&s390_crc32_made,s390_crc32_setup);
+    return crc32_z_hook(crc, buf, len);
+}
+
+ZLIB_INTERNAL unsigned long (*crc32_z_hook)(unsigned long crc, const unsigned char FAR *buf, z_size_t len) = s390_crc32_init;

vendor/tcl/compat/zlib/contrib/crc32vx/crc32_vx_hooks.h

@@ -0,0 +1,9 @@
+#ifndef CRC32_VX_HOOKS_H
+#define CRC32_VX_HOOKS_H
+
+/**
+ * CRC HOOKS
+ */
+ZLIB_INTERNAL extern unsigned long (*crc32_z_hook)(unsigned long crc, const unsigned char FAR *buf, z_size_t len);
+
+#endif /* CRC32_VX_HOOKS_H */

vendor/tcl/compat/zlib/contrib/delphi/ZLib.pas

@@ -0,0 +1,557 @@
+{*******************************************************}
+{                                                       }
+{       Borland Delphi Supplemental Components          }
+{       ZLIB Data Compression Interface Unit            }
+{                                                       }
+{       Copyright (c) 1997,99 Borland Corporation       }
+{                                                       }
+{*******************************************************}
+
+{ Updated for zlib 1.2.x by Cosmin Truta <cosmint@cs.ubbcluj.ro> }
+
+unit ZLib;
+
+interface
+
+uses SysUtils, Classes;
+
+type
+  TAlloc = function (AppData: Pointer; Items, Size: Integer): Pointer; cdecl;
+  TFree = procedure (AppData, Block: Pointer); cdecl;
+
+  // Internal structure.  Ignore.
+  TZStreamRec = packed record
+    next_in: PChar;       // next input byte
+    avail_in: Integer;    // number of bytes available at next_in
+    total_in: Longint;    // total nb of input bytes read so far
+
+    next_out: PChar;      // next output byte should be put here
+    avail_out: Integer;   // remaining free space at next_out
+    total_out: Longint;   // total nb of bytes output so far
+
+    msg: PChar;           // last error message, NULL if no error
+    internal: Pointer;    // not visible by applications
+
+    zalloc: TAlloc;       // used to allocate the internal state
+    zfree: TFree;         // used to free the internal state
+    AppData: Pointer;     // private data object passed to zalloc and zfree
+
+    data_type: Integer;   // best guess about the data type: ascii or binary
+    adler: Longint;       // adler32 value of the uncompressed data
+    reserved: Longint;    // reserved for future use
+  end;
+
+  // Abstract ancestor class
+  TCustomZlibStream = class(TStream)
+  private
+    FStrm: TStream;
+    FStrmPos: Integer;
+    FOnProgress: TNotifyEvent;
+    FZRec: TZStreamRec;
+    FBuffer: array [Word] of Char;
+  protected
+    procedure Progress(Sender: TObject); dynamic;
+    property OnProgress: TNotifyEvent read FOnProgress write FOnProgress;
+    constructor Create(Strm: TStream);
+  end;
+
+{ TCompressionStream compresses data on the fly as data is written to it, and
+  stores the compressed data to another stream.
+
+  TCompressionStream is write-only and strictly sequential. Reading from the
+  stream will raise an exception. Using Seek to move the stream pointer
+  will raise an exception.
+
+  Output data is cached internally, written to the output stream only when
+  the internal output buffer is full.  All pending output data is flushed
+  when the stream is destroyed.
+
+  The Position property returns the number of uncompressed bytes of
+  data that have been written to the stream so far.
+
+  CompressionRate returns the on-the-fly percentage by which the original
+  data has been compressed:  (1 - (CompressedBytes / UncompressedBytes)) * 100
+  If raw data size = 100 and compressed data size = 25, the CompressionRate
+  is 75%
+
+  The OnProgress event is called each time the output buffer is filled and
+  written to the output stream.  This is useful for updating a progress
+  indicator when you are writing a large chunk of data to the compression
+  stream in a single call.}
+
+
+  TCompressionLevel = (clNone, clFastest, clDefault, clMax);
+
+  TCompressionStream = class(TCustomZlibStream)
+  private
+    function GetCompressionRate: Single;
+  public
+    constructor Create(CompressionLevel: TCompressionLevel; Dest: TStream);
+    destructor Destroy; override;
+    function Read(var Buffer; Count: Longint): Longint; override;
+    function Write(const Buffer; Count: Longint): Longint; override;
+    function Seek(Offset: Longint; Origin: Word): Longint; override;
+    property CompressionRate: Single read GetCompressionRate;
+    property OnProgress;
+  end;
+
+{ TDecompressionStream decompresses data on the fly as data is read from it.
+
+  Compressed data comes from a separate source stream.  TDecompressionStream
+  is read-only and unidirectional; you can seek forward in the stream, but not
+  backwards.  The special case of setting the stream position to zero is
+  allowed.  Seeking forward decompresses data until the requested position in
+  the uncompressed data has been reached.  Seeking backwards, seeking relative
+  to the end of the stream, requesting the size of the stream, and writing to
+  the stream will raise an exception.
+
+  The Position property returns the number of bytes of uncompressed data that
+  have been read from the stream so far.
+
+  The OnProgress event is called each time the internal input buffer of
+  compressed data is exhausted and the next block is read from the input stream.
+  This is useful for updating a progress indicator when you are reading a
+  large chunk of data from the decompression stream in a single call.}
+
+  TDecompressionStream = class(TCustomZlibStream)
+  public
+    constructor Create(Source: TStream);
+    destructor Destroy; override;
+    function Read(var Buffer; Count: Longint): Longint; override;
+    function Write(const Buffer; Count: Longint): Longint; override;
+    function Seek(Offset: Longint; Origin: Word): Longint; override;
+    property OnProgress;
+  end;
+
+
+
+{ CompressBuf compresses data, buffer to buffer, in one call.
+   In: InBuf = ptr to compressed data
+       InBytes = number of bytes in InBuf
+  Out: OutBuf = ptr to newly allocated buffer containing decompressed data
+       OutBytes = number of bytes in OutBuf   }
+procedure CompressBuf(const InBuf: Pointer; InBytes: Integer;
+                      out OutBuf: Pointer; out OutBytes: Integer);
+
+
+{ DecompressBuf decompresses data, buffer to buffer, in one call.
+   In: InBuf = ptr to compressed data
+       InBytes = number of bytes in InBuf
+       OutEstimate = zero, or est. size of the decompressed data
+  Out: OutBuf = ptr to newly allocated buffer containing decompressed data
+       OutBytes = number of bytes in OutBuf   }
+procedure DecompressBuf(const InBuf: Pointer; InBytes: Integer;
+ OutEstimate: Integer; out OutBuf: Pointer; out OutBytes: Integer);
+
+{ DecompressToUserBuf decompresses data, buffer to buffer, in one call.
+   In: InBuf = ptr to compressed data
+       InBytes = number of bytes in InBuf
+  Out: OutBuf = ptr to user-allocated buffer to contain decompressed data
+       BufSize = number of bytes in OutBuf   }
+procedure DecompressToUserBuf(const InBuf: Pointer; InBytes: Integer;
+  const OutBuf: Pointer; BufSize: Integer);
+
+const
+  zlib_version = '1.3.2';
+
+type
+  EZlibError = class(Exception);
+  ECompressionError = class(EZlibError);
+  EDecompressionError = class(EZlibError);
+
+implementation
+
+uses ZLibConst;
+
+const
+  Z_NO_FLUSH      = 0;
+  Z_PARTIAL_FLUSH = 1;
+  Z_SYNC_FLUSH    = 2;
+  Z_FULL_FLUSH    = 3;
+  Z_FINISH        = 4;
+
+  Z_OK            = 0;
+  Z_STREAM_END    = 1;
+  Z_NEED_DICT     = 2;
+  Z_ERRNO         = (-1);
+  Z_STREAM_ERROR  = (-2);
+  Z_DATA_ERROR    = (-3);
+  Z_MEM_ERROR     = (-4);
+  Z_BUF_ERROR     = (-5);
+  Z_VERSION_ERROR = (-6);
+
+  Z_NO_COMPRESSION       =   0;
+  Z_BEST_SPEED           =   1;
+  Z_BEST_COMPRESSION     =   9;
+  Z_DEFAULT_COMPRESSION  = (-1);
+
+  Z_FILTERED            = 1;
+  Z_HUFFMAN_ONLY        = 2;
+  Z_RLE                 = 3;
+  Z_DEFAULT_STRATEGY    = 0;
+
+  Z_BINARY   = 0;
+  Z_ASCII    = 1;
+  Z_UNKNOWN  = 2;
+
+  Z_DEFLATED = 8;
+
+
+{$L adler32.obj}
+{$L compress.obj}
+{$L crc32.obj}
+{$L deflate.obj}
+{$L infback.obj}
+{$L inffast.obj}
+{$L inflate.obj}
+{$L inftrees.obj}
+{$L trees.obj}
+{$L uncompr.obj}
+{$L zutil.obj}
+
+procedure adler32; external;
+procedure compressBound; external;
+procedure crc32; external;
+procedure deflateInit2_; external;
+procedure deflateParams; external;
+
+function _malloc(Size: Integer): Pointer; cdecl;
+begin
+  Result := AllocMem(Size);
+end;
+
+procedure _free(Block: Pointer); cdecl;
+begin
+  FreeMem(Block);
+end;
+
+procedure _memset(P: Pointer; B: Byte; count: Integer); cdecl;
+begin
+  FillChar(P^, count, B);
+end;
+
+procedure _memcpy(dest, source: Pointer; count: Integer); cdecl;
+begin
+  Move(source^, dest^, count);
+end;
+
+
+
+// deflate compresses data
+function deflateInit_(var strm: TZStreamRec; level: Integer; version: PChar;
+  recsize: Integer): Integer; external;
+function deflate(var strm: TZStreamRec; flush: Integer): Integer; external;
+function deflateEnd(var strm: TZStreamRec): Integer; external;
+
+// inflate decompresses data
+function inflateInit_(var strm: TZStreamRec; version: PChar;
+  recsize: Integer): Integer; external;
+function inflate(var strm: TZStreamRec; flush: Integer): Integer; external;
+function inflateEnd(var strm: TZStreamRec): Integer; external;
+function inflateReset(var strm: TZStreamRec): Integer; external;
+
+
+function zlibAllocMem(AppData: Pointer; Items, Size: Integer): Pointer; cdecl;
+begin
+//  GetMem(Result, Items*Size);
+  Result := AllocMem(Items * Size);
+end;
+
+procedure zlibFreeMem(AppData, Block: Pointer); cdecl;
+begin
+  FreeMem(Block);
+end;
+
+{function zlibCheck(code: Integer): Integer;
+begin
+  Result := code;
+  if code < 0 then
+    raise EZlibError.Create('error');    //!!
+end;}
+
+function CCheck(code: Integer): Integer;
+begin
+  Result := code;
+  if code < 0 then
+    raise ECompressionError.Create('error'); //!!
+end;
+
+function DCheck(code: Integer): Integer;
+begin
+  Result := code;
+  if code < 0 then
+    raise EDecompressionError.Create('error');  //!!
+end;
+
+procedure CompressBuf(const InBuf: Pointer; InBytes: Integer;
+                      out OutBuf: Pointer; out OutBytes: Integer);
+var
+  strm: TZStreamRec;
+  P: Pointer;
+begin
+  FillChar(strm, sizeof(strm), 0);
+  strm.zalloc := zlibAllocMem;
+  strm.zfree := zlibFreeMem;
+  OutBytes := ((InBytes + (InBytes div 10) + 12) + 255) and not 255;
+  GetMem(OutBuf, OutBytes);
+  try
+    strm.next_in := InBuf;
+    strm.avail_in := InBytes;
+    strm.next_out := OutBuf;
+    strm.avail_out := OutBytes;
+    CCheck(deflateInit_(strm, Z_BEST_COMPRESSION, zlib_version, sizeof(strm)));
+    try
+      while CCheck(deflate(strm, Z_FINISH)) <> Z_STREAM_END do
+      begin
+        P := OutBuf;
+        Inc(OutBytes, 256);
+        ReallocMem(OutBuf, OutBytes);
+        strm.next_out := PChar(Integer(OutBuf) + (Integer(strm.next_out) - Integer(P)));
+        strm.avail_out := 256;
+      end;
+    finally
+      CCheck(deflateEnd(strm));
+    end;
+    ReallocMem(OutBuf, strm.total_out);
+    OutBytes := strm.total_out;
+  except
+    FreeMem(OutBuf);
+    raise
+  end;
+end;
+
+
+procedure DecompressBuf(const InBuf: Pointer; InBytes: Integer;
+  OutEstimate: Integer; out OutBuf: Pointer; out OutBytes: Integer);
+var
+  strm: TZStreamRec;
+  P: Pointer;
+  BufInc: Integer;
+begin
+  FillChar(strm, sizeof(strm), 0);
+  strm.zalloc := zlibAllocMem;
+  strm.zfree := zlibFreeMem;
+  BufInc := (InBytes + 255) and not 255;
+  if OutEstimate = 0 then
+    OutBytes := BufInc
+  else
+    OutBytes := OutEstimate;
+  GetMem(OutBuf, OutBytes);
+  try
+    strm.next_in := InBuf;
+    strm.avail_in := InBytes;
+    strm.next_out := OutBuf;
+    strm.avail_out := OutBytes;
+    DCheck(inflateInit_(strm, zlib_version, sizeof(strm)));
+    try
+      while DCheck(inflate(strm, Z_NO_FLUSH)) <> Z_STREAM_END do
+      begin
+        P := OutBuf;
+        Inc(OutBytes, BufInc);
+        ReallocMem(OutBuf, OutBytes);
+        strm.next_out := PChar(Integer(OutBuf) + (Integer(strm.next_out) - Integer(P)));
+        strm.avail_out := BufInc;
+      end;
+    finally
+      DCheck(inflateEnd(strm));
+    end;
+    ReallocMem(OutBuf, strm.total_out);
+    OutBytes := strm.total_out;
+  except
+    FreeMem(OutBuf);
+    raise
+  end;
+end;
+
+procedure DecompressToUserBuf(const InBuf: Pointer; InBytes: Integer;
+  const OutBuf: Pointer; BufSize: Integer);
+var
+  strm: TZStreamRec;
+begin
+  FillChar(strm, sizeof(strm), 0);
+  strm.zalloc := zlibAllocMem;
+  strm.zfree := zlibFreeMem;
+  strm.next_in := InBuf;
+  strm.avail_in := InBytes;
+  strm.next_out := OutBuf;
+  strm.avail_out := BufSize;
+  DCheck(inflateInit_(strm, zlib_version, sizeof(strm)));
+  try
+    if DCheck(inflate(strm, Z_FINISH)) <> Z_STREAM_END then
+      raise EZlibError.CreateRes(@sTargetBufferTooSmall);
+  finally
+    DCheck(inflateEnd(strm));
+  end;
+end;
+
+// TCustomZlibStream
+
+constructor TCustomZLibStream.Create(Strm: TStream);
+begin
+  inherited Create;
+  FStrm := Strm;
+  FStrmPos := Strm.Position;
+  FZRec.zalloc := zlibAllocMem;
+  FZRec.zfree := zlibFreeMem;
+end;
+
+procedure TCustomZLibStream.Progress(Sender: TObject);
+begin
+  if Assigned(FOnProgress) then FOnProgress(Sender);
+end;
+
+
+// TCompressionStream
+
+constructor TCompressionStream.Create(CompressionLevel: TCompressionLevel;
+  Dest: TStream);
+const
+  Levels: array [TCompressionLevel] of ShortInt =
+    (Z_NO_COMPRESSION, Z_BEST_SPEED, Z_DEFAULT_COMPRESSION, Z_BEST_COMPRESSION);
+begin
+  inherited Create(Dest);
+  FZRec.next_out := FBuffer;
+  FZRec.avail_out := sizeof(FBuffer);
+  CCheck(deflateInit_(FZRec, Levels[CompressionLevel], zlib_version, sizeof(FZRec)));
+end;
+
+destructor TCompressionStream.Destroy;
+begin
+  FZRec.next_in := nil;
+  FZRec.avail_in := 0;
+  try
+    if FStrm.Position <> FStrmPos then FStrm.Position := FStrmPos;
+    while (CCheck(deflate(FZRec, Z_FINISH)) <> Z_STREAM_END)
+      and (FZRec.avail_out = 0) do
+    begin
+      FStrm.WriteBuffer(FBuffer, sizeof(FBuffer));
+      FZRec.next_out := FBuffer;
+      FZRec.avail_out := sizeof(FBuffer);
+    end;
+    if FZRec.avail_out < sizeof(FBuffer) then
+      FStrm.WriteBuffer(FBuffer, sizeof(FBuffer) - FZRec.avail_out);
+  finally
+    deflateEnd(FZRec);
+  end;
+  inherited Destroy;
+end;
+
+function TCompressionStream.Read(var Buffer; Count: Longint): Longint;
+begin
+  raise ECompressionError.CreateRes(@sInvalidStreamOp);
+end;
+
+function TCompressionStream.Write(const Buffer; Count: Longint): Longint;
+begin
+  FZRec.next_in := @Buffer;
+  FZRec.avail_in := Count;
+  if FStrm.Position <> FStrmPos then FStrm.Position := FStrmPos;
+  while (FZRec.avail_in > 0) do
+  begin
+    CCheck(deflate(FZRec, 0));
+    if FZRec.avail_out = 0 then
+    begin
+      FStrm.WriteBuffer(FBuffer, sizeof(FBuffer));
+      FZRec.next_out := FBuffer;
+      FZRec.avail_out := sizeof(FBuffer);
+      FStrmPos := FStrm.Position;
+      Progress(Self);
+    end;
+  end;
+  Result := Count;
+end;
+
+function TCompressionStream.Seek(Offset: Longint; Origin: Word): Longint;
+begin
+  if (Offset = 0) and (Origin = soFromCurrent) then
+    Result := FZRec.total_in
+  else
+    raise ECompressionError.CreateRes(@sInvalidStreamOp);
+end;
+
+function TCompressionStream.GetCompressionRate: Single;
+begin
+  if FZRec.total_in = 0 then
+    Result := 0
+  else
+    Result := (1.0 - (FZRec.total_out / FZRec.total_in)) * 100.0;
+end;
+
+
+// TDecompressionStream
+
+constructor TDecompressionStream.Create(Source: TStream);
+begin
+  inherited Create(Source);
+  FZRec.next_in := FBuffer;
+  FZRec.avail_in := 0;
+  DCheck(inflateInit_(FZRec, zlib_version, sizeof(FZRec)));
+end;
+
+destructor TDecompressionStream.Destroy;
+begin
+  FStrm.Seek(-FZRec.avail_in, 1);
+  inflateEnd(FZRec);
+  inherited Destroy;
+end;
+
+function TDecompressionStream.Read(var Buffer; Count: Longint): Longint;
+begin
+  FZRec.next_out := @Buffer;
+  FZRec.avail_out := Count;
+  if FStrm.Position <> FStrmPos then FStrm.Position := FStrmPos;
+  while (FZRec.avail_out > 0) do
+  begin
+    if FZRec.avail_in = 0 then
+    begin
+      FZRec.avail_in := FStrm.Read(FBuffer, sizeof(FBuffer));
+      if FZRec.avail_in = 0 then
+      begin
+        Result := Count - FZRec.avail_out;
+        Exit;
+      end;
+      FZRec.next_in := FBuffer;
+      FStrmPos := FStrm.Position;
+      Progress(Self);
+    end;
+    CCheck(inflate(FZRec, 0));
+  end;
+  Result := Count;
+end;
+
+function TDecompressionStream.Write(const Buffer; Count: Longint): Longint;
+begin
+  raise EDecompressionError.CreateRes(@sInvalidStreamOp);
+end;
+
+function TDecompressionStream.Seek(Offset: Longint; Origin: Word): Longint;
+var
+  I: Integer;
+  Buf: array [0..4095] of Char;
+begin
+  if (Offset = 0) and (Origin = soFromBeginning) then
+  begin
+    DCheck(inflateReset(FZRec));
+    FZRec.next_in := FBuffer;
+    FZRec.avail_in := 0;
+    FStrm.Position := 0;
+    FStrmPos := 0;
+  end
+  else if ( (Offset >= 0) and (Origin = soFromCurrent)) or
+          ( ((Offset - FZRec.total_out) > 0) and (Origin = soFromBeginning)) then
+  begin
+    if Origin = soFromBeginning then Dec(Offset, FZRec.total_out);
+    if Offset > 0 then
+    begin
+      for I := 1 to Offset div sizeof(Buf) do
+        ReadBuffer(Buf, sizeof(Buf));
+      ReadBuffer(Buf, Offset mod sizeof(Buf));
+    end;
+  end
+  else
+    raise EDecompressionError.CreateRes(@sInvalidStreamOp);
+  Result := FZRec.total_out;
+end;
+
+
+end.

vendor/tcl/compat/zlib/contrib/delphi/ZLibConst.pas

@@ -0,0 +1,11 @@
+unit ZLibConst;
+
+interface
+
+resourcestring
+  sTargetBufferTooSmall = 'ZLib error: target buffer may be too small';
+  sInvalidStreamOp = 'Invalid stream operation';
+
+implementation
+
+end.

vendor/tcl/compat/zlib/contrib/delphi/readme.txt

@@ -0,0 +1,76 @@
+
+Overview
+========
+
+This directory contains an update to the ZLib interface unit,
+distributed by Borland as a Delphi supplemental component.
+
+The original ZLib unit is Copyright (c) 1997,99 Borland Corp.,
+and is based on zlib version 1.0.4.  There are a series of bugs
+and security problems associated with that old zlib version, and
+we recommend the users to update their ZLib unit.
+
+
+Summary of modifications
+========================
+
+- Improved makefile, adapted to zlib version 1.2.1.
+
+- Some field types from TZStreamRec are changed from Integer to
+  Longint, for consistency with the zlib.h header, and for 64-bit
+  readiness.
+
+- The zlib_version constant is updated.
+
+- The new Z_RLE strategy has its corresponding symbolic constant.
+
+- The allocation and deallocation functions and function types
+  (TAlloc, TFree, zlibAllocMem and zlibFreeMem) are now cdecl,
+  and _malloc and _free are added as C RTL stubs.  As a result,
+  the original C sources of zlib can be compiled out of the box,
+  and linked to the ZLib unit.
+
+
+Suggestions for improvements
+============================
+
+Currently, the ZLib unit provides only a limited wrapper around
+the zlib library, and much of the original zlib functionality is
+missing.  Handling compressed file formats like ZIP/GZIP or PNG
+cannot be implemented without having this functionality.
+Applications that handle these formats are either using their own,
+duplicated code, or not using the ZLib unit at all.
+
+Here are a few suggestions:
+
+- Checksum class wrappers around adler32() and crc32(), similar
+  to the Java classes that implement the java.util.zip.Checksum
+  interface.
+
+- The ability to read and write raw deflate streams, without the
+  zlib stream header and trailer.  Raw deflate streams are used
+  in the ZIP file format.
+
+- The ability to read and write gzip streams, used in the GZIP
+  file format, and normally produced by the gzip program.
+
+- The ability to select a different compression strategy, useful
+  to PNG and MNG image compression, and to multimedia compression
+  in general.  Besides the compression level
+
+    TCompressionLevel = (clNone, clFastest, clDefault, clMax);
+
+  which, in fact, could have used the 'z' prefix and avoided
+  TColor-like symbols
+
+    TCompressionLevel = (zcNone, zcFastest, zcDefault, zcMax);
+
+  there could be a compression strategy
+
+    TCompressionStrategy = (zsDefault, zsFiltered, zsHuffmanOnly, zsRle);
+
+- ZIP and GZIP stream handling via TStreams.
+
+
+--
+Cosmin Truta <cosmint@cs.ubbcluj.ro>

vendor/tcl/compat/zlib/contrib/delphi/zlibd32.mak

@@ -0,0 +1,99 @@
+# Makefile for zlib
+# For use with Delphi and C++ Builder under Win32
+# Updated for zlib 1.2.x by Cosmin Truta
+
+# ------------ Borland C++ ------------
+
+# This project uses the Delphi (fastcall/register) calling convention:
+LOC = -DZEXPORT=__fastcall -DZEXPORTVA=__cdecl
+
+CC = bcc32
+LD = bcc32
+AR = tlib
+# do not use "-pr" in CFLAGS
+CFLAGS = -a -d -k- -O2 $(LOC)
+LDFLAGS =
+
+
+# variables
+ZLIB_LIB = zlib.lib
+
+OBJ1 = adler32.obj compress.obj crc32.obj deflate.obj gzclose.obj gzlib.obj gzread.obj
+OBJ2 = gzwrite.obj infback.obj inffast.obj inflate.obj inftrees.obj trees.obj uncompr.obj zutil.obj
+OBJP1 = +adler32.obj+compress.obj+crc32.obj+deflate.obj+gzclose.obj+gzlib.obj+gzread.obj
+OBJP2 = +gzwrite.obj+infback.obj+inffast.obj+inflate.obj+inftrees.obj+trees.obj+uncompr.obj+zutil.obj
+
+
+# targets
+all: $(ZLIB_LIB) example.exe minigzip.exe
+
+.c.obj:
+	$(CC) -c $(CFLAGS) $*.c
+
+adler32.obj: adler32.c zlib.h zconf.h
+
+compress.obj: compress.c zlib.h zconf.h
+
+crc32.obj: crc32.c zlib.h zconf.h crc32.h
+
+deflate.obj: deflate.c deflate.h zutil.h zlib.h zconf.h
+
+gzclose.obj: gzclose.c zlib.h zconf.h gzguts.h
+
+gzlib.obj: gzlib.c zlib.h zconf.h gzguts.h
+
+gzread.obj: gzread.c zlib.h zconf.h gzguts.h
+
+gzwrite.obj: gzwrite.c zlib.h zconf.h gzguts.h
+
+infback.obj: infback.c zutil.h zlib.h zconf.h inftrees.h inflate.h \
+ inffast.h inffixed.h
+
+inffast.obj: inffast.c zutil.h zlib.h zconf.h inftrees.h inflate.h \
+ inffast.h
+
+inflate.obj: inflate.c zutil.h zlib.h zconf.h inftrees.h inflate.h \
+ inffast.h inffixed.h
+
+inftrees.obj: inftrees.c zutil.h zlib.h zconf.h inftrees.h
+
+trees.obj: trees.c zutil.h zlib.h zconf.h deflate.h trees.h
+
+uncompr.obj: uncompr.c zlib.h zconf.h
+
+zutil.obj: zutil.c zutil.h zlib.h zconf.h
+
+example.obj: test/example.c zlib.h zconf.h
+
+minigzip.obj: test/minigzip.c zlib.h zconf.h
+
+
+# For the sake of the old Borland make,
+# the command line is cut to fit in the MS-DOS 128 byte limit:
+$(ZLIB_LIB): $(OBJ1) $(OBJ2)
+	-del $(ZLIB_LIB)
+	$(AR) $(ZLIB_LIB) $(OBJP1)
+	$(AR) $(ZLIB_LIB) $(OBJP2)
+
+
+# testing
+test: example.exe minigzip.exe
+	example
+	echo hello world | minigzip | minigzip -d
+
+example.exe: example.obj $(ZLIB_LIB)
+	$(LD) $(LDFLAGS) example.obj $(ZLIB_LIB)
+
+minigzip.exe: minigzip.obj $(ZLIB_LIB)
+	$(LD) $(LDFLAGS) minigzip.obj $(ZLIB_LIB)
+
+
+# cleanup
+clean:
+	-del *.obj
+	-del *.exe
+	-del *.lib
+	-del *.tds
+	-del zlib.bak
+	-del foo.gz
+

vendor/tcl/compat/zlib/contrib/dotzlib/DotZLib.build

@@ -0,0 +1,33 @@
+<?xml version="1.0" encoding="utf-8" ?>
+<project name="DotZLib" default="build" basedir="./DotZLib">
+	<description>A .Net wrapper library around ZLib1.dll</description>
+
+	<property name="nunit.location" value="c:/program files/NUnit V2.1/bin" />
+	<property name="build.root" value="bin" />
+
+	<property name="debug" value="true" />
+	<property name="nunit" value="true" />
+
+	<property name="build.folder" value="${build.root}/debug/" if="${debug}" />
+	<property name="build.folder" value="${build.root}/release/" unless="${debug}" />
+
+	<target name="clean" description="Remove all generated files">
+		<delete dir="${build.root}" failonerror="false" />
+	</target>
+
+	<target name="build" description="compiles the source code">
+
+		<mkdir dir="${build.folder}" />
+		<csc target="library" output="${build.folder}DotZLib.dll" debug="${debug}">
+			<references basedir="${nunit.location}">
+				<includes if="${nunit}" name="nunit.framework.dll" />
+			</references>
+			<sources>
+				<includes name="*.cs" />
+				<excludes name="UnitTests.cs" unless="${nunit}" />
+			</sources>
+			<arg value="/d:nunit" if="${nunit}" />
+		</csc>
+	</target>
+
+</project>

vendor/tcl/compat/zlib/contrib/dotzlib/DotZLib.sln

@@ -0,0 +1,21 @@
+Microsoft Visual Studio Solution File, Format Version 8.00
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "DotZLib", "DotZLib\DotZLib.csproj", "{BB1EE0B1-1808-46CB-B786-949D91117FC5}"
+	ProjectSection(ProjectDependencies) = postProject
+	EndProjectSection
+EndProject
+Global
+	GlobalSection(SolutionConfiguration) = preSolution
+		Debug = Debug
+		Release = Release
+	EndGlobalSection
+	GlobalSection(ProjectConfiguration) = postSolution
+		{BB1EE0B1-1808-46CB-B786-949D91117FC5}.Debug.ActiveCfg = Debug|.NET
+		{BB1EE0B1-1808-46CB-B786-949D91117FC5}.Debug.Build.0 = Debug|.NET
+		{BB1EE0B1-1808-46CB-B786-949D91117FC5}.Release.ActiveCfg = Release|.NET
+		{BB1EE0B1-1808-46CB-B786-949D91117FC5}.Release.Build.0 = Release|.NET
+	EndGlobalSection
+	GlobalSection(ExtensibilityGlobals) = postSolution
+	EndGlobalSection
+	GlobalSection(ExtensibilityAddIns) = postSolution
+	EndGlobalSection
+EndGlobal

vendor/tcl/compat/zlib/contrib/dotzlib/DotZLib/AssemblyInfo.cs

@@ -0,0 +1,58 @@
+using System.Reflection;
+using System.Runtime.CompilerServices;
+
+//
+// General Information about an assembly is controlled through the following
+// set of attributes. Change these attribute values to modify the information
+// associated with an assembly.
+//
+[assembly: AssemblyTitle("DotZLib")]
+[assembly: AssemblyDescription(".Net bindings for ZLib compression dll 1.2.x")]
+[assembly: AssemblyConfiguration("")]
+[assembly: AssemblyCompany("Henrik Ravn")]
+[assembly: AssemblyProduct("")]
+[assembly: AssemblyCopyright("(c) 2004 by Henrik Ravn")]
+[assembly: AssemblyTrademark("")]
+[assembly: AssemblyCulture("")]
+
+//
+// Version information for an assembly consists of the following four values:
+//
+//      Major Version
+//      Minor Version
+//      Build Number
+//      Revision
+//
+// You can specify all the values or you can default the Revision and Build Numbers
+// by using the '*' as shown below:
+
+[assembly: AssemblyVersion("1.0.*")]
+
+//
+// In order to sign your assembly you must specify a key to use. Refer to the
+// Microsoft .NET Framework documentation for more information on assembly signing.
+//
+// Use the attributes below to control which key is used for signing.
+//
+// Notes:
+//   (*) If no key is specified, the assembly is not signed.
+//   (*) KeyName refers to a key that has been installed in the Crypto Service
+//       Provider (CSP) on your machine. KeyFile refers to a file which contains
+//       a key.
+//   (*) If the KeyFile and the KeyName values are both specified, the
+//       following processing occurs:
+//       (1) If the KeyName can be found in the CSP, that key is used.
+//       (2) If the KeyName does not exist and the KeyFile does exist, the key
+//           in the KeyFile is installed into the CSP and used.
+//   (*) In order to create a KeyFile, you can use the sn.exe (Strong Name) utility.
+//       When specifying the KeyFile, the location of the KeyFile should be
+//       relative to the project output directory which is
+//       %Project Directory%\obj\<configuration>. For example, if your KeyFile is
+//       located in the project directory, you would specify the AssemblyKeyFile
+//       attribute as [assembly: AssemblyKeyFile("..\\..\\mykey.snk")]
+//   (*) Delay Signing is an advanced option - see the Microsoft .NET Framework
+//       documentation for more information on this.
+//
+[assembly: AssemblyDelaySign(false)]
+[assembly: AssemblyKeyFile("")]
+[assembly: AssemblyKeyName("")]