joeylib2/scripts/make-iigs-disk.sh
2026-06-30 18:07:12 -05:00

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#!/usr/bin/env bash
# make-iigs-disk.sh - Build the JOEYLIB ProDOS disk image (joey.2mg) that
# run-iigs-mame.sh and run-iigs.sh mount as the data disk (flop4). It holds
# the launchable example binaries as ProDOS type $B3 (S16 / GS-OS apps) in a
# volume named JOEYLIB, so GS/OS Finder lists and launches them.
#
# A 3.5" floppy caps at 800KB, which cannot hold every example at once.
# Examples are added in priority order (small primitive demos first); any that
# would overflow the volume are skipped with a warning rather than corrupting
# the image. Override the set with JOEY_DISK_EXAMPLES="DRAW SPRITE ...".
#
# Usage: scripts/make-iigs-disk.sh [output.2mg]
# Requires: toolchains/env.sh sourced (LLVM816_ROOT), built IIgs examples.
set -euo pipefail
repo=$(cd "$(dirname "${BASH_SOURCE[0]}")/.." && pwd)
: "${LLVM816_ROOT:?make-iigs-disk.sh: source toolchains/env.sh first}"
CADIUS="${CADIUS:-$LLVM816_ROOT/tools/cadius/cadius}"
BINDIR="${BINDIR:-$repo/build/iigs/bin}"
OUT="${1:-$BINDIR/joey.2mg}"
VOL=JOEYLIB
[ -x "$CADIUS" ] || { echo "make-iigs-disk.sh: cadius not found at $CADIUS" >&2; exit 2; }
# Priority order: small primitive demos first so DRAW/PATTERN/etc. always fit;
# the large AGI build lands last and is dropped if the floppy is full.
order=(${JOEY_DISK_EXAMPLES:-DRAW PATTERN KEYS JOY SPRITE UBER ADV2 ADV AGI})
work=$(mktemp -d -t joeylib-disk.XXXXXX)
trap 'rm -rf "$work"' EXIT
rm -f "$OUT"
"$CADIUS" CREATEVOLUME "$OUT" "$VOL" 800KB >/dev/null
freeBlocks() {
"$CADIUS" CATALOG "$OUT" 2>/dev/null \
| grep -oE 'Free : [0-9]+' | grep -oE '[0-9]+' | head -1
}
added=()
skipped=()
for name in "${order[@]}"; do
bin="$BINDIR/$name"
[ -f "$bin" ] || continue
sz=$(stat -c%s "$bin")
# data blocks + one index block per 256 data blocks + a little dir slack
need=$(( (sz + 511) / 512 + (sz + 131071) / 131072 + 2 ))
if [ "$need" -gt "$(freeBlocks)" ]; then
skipped+=("$name")
continue
fi
# ProDOS type $B3 (S16/GS-OS application), aux $0000.
cp "$bin" "$work/$name#B30000"
"$CADIUS" ADDFILE "$OUT" "/$VOL" "$work/$name#B30000" >/dev/null
rm -f "$work/$name#B30000"
if "$CADIUS" CATALOG "$OUT" 2>/dev/null | grep -qE "^ $name +S16"; then
added+=("$name")
else
skipped+=("$name")
fi
done
echo "iigs-disk: $OUT (volume /$VOL)"
echo " added: ${added[*]:-none}"
if [ ${#skipped[@]} -gt 0 ]; then
echo " SKIPPED (800KB floppy full): ${skipped[*]}"
echo " -> mount a single-example disk via JOEY_DISK_EXAMPLES=\"NAME\" $0"
fi