exo-macos-commands

#!/bin/bash
# FIXME: Currently missing dosbox variants: ece, svn, stock
# Unhandled:
#CTorOCh        "./eXoDOS/CTorOCh/dosbox/dosbox.exe" -conf "eXoDOS/\!dos/CTorOCh/dosbox.conf" -noconsole -exit
#FatmanTh       "./eXoDOS/FatmanTh/dosbox.exe" -conf "eXoDOS/\!dos/FatmanTh/dosbox.conf" -noconsole -exit 
#ThemPark       "./eXoDOS/ThemPark/ece/DOSBox.exe" -conf "eXoDOS/\!dos/ThemPark/dosbox.conf" -noconsole -exit -nomenu
#btroot "./eXoDOS/btroot/dosbox/dosbox.exe" -conf "eXoDOS/\!dos/btroot/dosbox.conf" -noconsole -exit
#MinosAdv       "./eXoDOS/MinosAdv/DOSBox-0.73/dosbox.exe" -conf "eXoDOS/\!dos/MinosAdv/dosbox.conf" -noconsole -exit

set -euo pipefail

usage() {
    echo >&2 "${0##*/} [options]"
    echo >&2
    echo >&2 "Print commandlines to launch installed eXo games natively on macOS."
    echo >&2
    echo >&2 "Options:"
    echo >&2 "  -a   List all games, not just installed."
}

process_arguments() {
    all=0
    while getopts ah opt; do
        case "$opt" in
        a)
            all=1
            ;;
        \? | h)
            usage
            ;;
        esac
    done
    shift $((OPTIND - 1))
}

list_all_games() {
    find eXo*/\!* -type d -mindepth 1 -maxdepth 1 | while read -r dir; do
        type="${dir%%/*}"
        name="$(basename "$dir")"
        gamedir="$type/$name"
        printf '%s\t%s\n' "$dir" "$gamedir"
    done
}

list_games() {
    find eXo* -type d -mindepth 1 -maxdepth 1 -not -iname \!\* | while read -r gamedir; do
        type="${gamedir%%/*}"
        name="$(basename "$gamedir")"
        dir="$(find "$type" -type d -iwholename "$type/\!*/$name")"
        if ! [ -e "$dir" ]; then
            continue
        fi
        printf '%s\t%s\n' "$dir" "$gamedir"
    done
}

scummvm_detect() {
    ./scummvm-macos/ScummVM.app/Contents/MacOS/scummvm -p "$1" --detect --recursive 2>/dev/null |
        tail -n +3 |
        sed -e 's#\([^ ]*\).*\('"$2"'/.*\)#\1 \2#'
}

no_batch() {
    local dir="$1"
    local gamedir="$2"
    local type="${dir%%/*}"
    case "$type" in
    eXoDOS | eXoWin3x)
        find "$dir" -iname dosbox\*.conf |
            while read -r conf; do
                printf "./dosbox-x-macos/dosbox-x-sdl2 -conf '%s' -noconsole -exit\n" "$conf"
            done
        ;;
    eXoScummVM)
        scummvm_detect "$gamedir" "$type" |
            while read -r id subdir; do
                printf './scummvm-macos/ScummVM.app/Contents/MacOS/scummvm 2>/dev/null -f -g2x --platform=pc --opl-driver=nuked -emt32 --multi-midi --extrapath=./mt32/rev0 --output-rate=44100 --aspect-ratio -p "%s" %s\n' "$subdir" "$id"
            done
        ;;
    *)
        printf '%s\t%s\n' "$dir" "$gamedir"
        ;;
    esac
}

get_commands() {
    local bat="$1"
    local dir="$2"
    local name="$3"

    # shellcheck disable=SC2016
    grep -iE '\.(bat|exe)' "$bat" |
        grep -Ev 'install\.bat|setconsole|GBC|taskkill' |
        grep -v '^rem ' |
        sed -e 's$%var%$'"$dir"'$g' \
            -e 's$%GameDir%$'"$name"'$g' \
            -e 's#\\#/#g' |
        tr -d $'\r' |
        cut -d: -f2-
}

identify() {
    local ident=
    local sdir
    local name="$1"
    local command="$2"

    case "$command" in
    *scmvm* | *scummvm*)
        local suffix=ScummVM
        # shellcheck disable=SC2001
        local id="${command##* }"
        if [ "$id" != "$command" ]; then
            suffix="$suffix, $id"
        fi
        ident="$name [$suffix]"
        sdir="$(echo "$command" | sed -e 's#\\#/#g' | sed -n -e 's/.* -p *"\([^"]*\)".*/\1/p')"
        if [ -n "$sdir" ]; then
            ident="${sdir##*/} [$suffix]"
        fi
        ;;
    *dos*)
        ident="$name [DOS]"
        ;;
    esac

    if echo "$command" | grep -qi fluidsynth; then
        ident="$ident [fluidsynth]"
    elif echo "$command" | grep -qi mt32; then
        ident="$ident [mt32]"
    fi
    printf '%s\n' "$ident"
}

win_command_to_mac() {
    sed -e 's#"./scmvm/scummvm.exe" --no-console#./scummvm-macos/ScummVM.app/Contents/MacOS/scummvm#' \
        -e 's#"./scummvm/scummvm.exe" --no-console#./scummvm-macos/ScummVM.app/Contents/MacOS/scummvm#' \
        -e 's#"./dosbox/ece/dosbox.exe"#./dosbox-x-macos/dosbox-x-sdl2#' \
        -e 's#"./dosbox/ECE/dosbox.exe"#./dosbox-x-macos/dosbox-x-sdl2#' \
        -e 's#"./dosbox/x/dosbox.exe"#./dosbox-x-macos/dosbox-x-sdl2#' \
        -e 's#"./dosbox/svn/dosbox.exe"#./dosbox-x-macos/dosbox-x-sdl2#' \
        -e 's#"./dosbox/dosbox.exe"#./dosbox-x-macos/dosbox-x-sdl2#' \
        -e 's#!#\\!#g'
}

main() {
    process_arguments "$@"
    shift $((OPTIND - 1))

    tmpdir="$(mktemp -d -t "${0##*/}.XXXXXX")"
    trap 'rm -rf "$tmpdir"' EXIT INT TERM

    if [ $all -eq 1 ]; then
        list_all_games
    else
        list_games
    fi | while IFS=$'\t' read -r dir gamedir; do
        type="${dir%%/*}"
        typesuffix="${type#eXo}"
        name="$(basename "$dir")"

        bat="$(find "$dir" -mindepth 1 -maxdepth 1 -iname \*.bat -not -iname install.bat -type f | head -n 1)"
        if [ -z "$bat" ]; then
            title="${dir##*/}"
            printf '# %s [%s]\n' "$title" "$typesuffix"
            no_batch "$dir" "$gamedir"
        else
            title="$(echo "$bat" | sed -e 's#.*/##; s#\.bat$##;')"
            printf '# %s [%s]\n' "$title" "$typesuffix"

            get_commands "$bat" "$dir" "$name" >"$tmpdir/commands"

            # shellcheck disable=SC2046
            if [ $(wc -l <"$tmpdir/commands") -eq 1 ]; then
                printf '%s\t%s\n' "$name" "$(cat "$tmpdir/commands")"
            else
                cat "$tmpdir/commands" |
                    while read -r command; do
                        ident="$(identify "$name" "$command")"
                        printf '%s\t%s\n' "$ident" "$command"
                    done
            fi |
                win_command_to_mac
        fi |
            sort -fu |
            if ! [ -e "$gamedir" ]; then
                sed -e '/^#/n; s/^/#/'
            else
                cat
            fi
        echo
    done
}

main "$@"