dotfiles/bin/zzexe

#!/bin/sh
if [ "$1" = "-d" ]; then
    shift
    tail -n +11 "$1" | zstd -do "$1"~ &&
    mv "$1"~ "$1"
    chmod +x "$1"
else
    if [ "$1" = "-p" ]; then
        shift
        prefix="$1 "
        shift
    fi

echo '#!/bin/sh' > "$1"~
echo out=\`mktemp -t .zzXXXX."${1##*.}"\` >> "$1"~
    cat >> "$1"~ << 'EOF'
dir=`dirname "$0"`
tail -n +11 "$0" | zstd -cd > "$out"
chmod +x "$out"
ln -s "$out" "$dir"
trap "res=$?" 0 1 2 3 5 10 13 15
EOF
    echo "$prefix"'$dir/`basename $out` $@' >> "$1"~
cat >> "$1"~ << 'EOF'
rm "$out" "$dir"/`basename $out`
exit $res
EOF

    zstd --ultra -22 "$1" &&
    cat "$1"~ "$1".zst > "$1"
    rm "$1".zst "$1~"
    chmod +x "$1"
fi