# Part of JoeyLib, Copyright (c) 2026 Scott Duensing, under the MIT License.
# See LICENSE.md for license information.
# SPDX-License-Identifier: MIT
#
# CWSDPMI r7: the DPMI host embedded into every DOS executable
# (make/support/dos/embed-dpmi.sh prepends CWSDSTUB.EXE), so programs run
# without a separate CWSDPMI.EXE.

compDescription="DOS DPMI host: CWSDPMI r7 (embedded into each .EXE)"
compGroups="toolchain:dos"
compRequires="host"
compHostDeps="unzip"
compUrl="https://sandmann.dotster.com/cwsdpmi/csdpmi7b.zip"
compSha256="deacda0488e1cdd7c4a9f32fab45662b34c0ed6b2d7d4d13bc07041b62004a8c"
compPin="$compSha256"


compInstall() {
    local zip
    zip="$(fetchFile "$compUrl" "$compSha256")"
    rm -rf "$compDir"
    # The zip holds bin/ and src/ trees; bin/ is what the build uses.
    extractArchive "$zip" "$compDir"
}


compInstalled() {
    [ -f "$compDir/bin/CWSDSTUB.EXE" ] && [ -f "$compDir/bin/CWSDPMI.EXE" ]
}


compVerify() {
    [ "$(head -c 2 "$compDir/bin/CWSDSTUB.EXE")" = "MZ" ]
}


compEnv() {
    envVar DOS_CWSDPMI "$compDir/bin"
    envVar DOS_CWSDSTUB "$compDir/bin/CWSDSTUB.EXE"
}