appdwarf/appdwarf

#!/bin/sh
set -e
IFS=$(printf '\n\t')
VER=2.5
BACK=5
HERE=$(dirname "$(readlink -f "${0}")")
. "$HERE/headers" && header || exit 1

if test $# -eq 0; then
    tput setaf 3
    echo "Usage: $(basename "$0") [option] [FILE/FOLDER/URL] [dwarfs option]"
    echo "  Compress a given AppDir (default)"
    tput setaf 7
    echo "    -a,  --appimage     Convert a given AppImage to appdwarf" 
    echo "    -B,  --lookback     Change dwarfs block lookback amount"
    echo "    -f,  --folder       Make image mount to a specified folder instead of running AppRun"
    echo "    -s,  --separate     Use old, separated header format"
    echo "    -u,  --url          Fetch AppImage from URL and convert to appdwarf"
    echo
    tput setaf 4
    echo "    -h,  --help         Print this help text"
    echo "    -v,  --version      Print the appdwarf version"
    exit 0
fi

dwarf() {
    mkdwarfs -i "$@" -o "$(realpath "$1").sh" -B"$BACK" --header "$HEAD"
    chmod +x "$(realpath "$1").sh"
}

appimage() {
    if [ ! -f "$1" ]; then
        tput setaf 1
        echo "$1" is not a valid file
        exit 1
    fi
    chmod +x "$1"
    rm -rf squashfs-root
    case $1 in
        /*) "$1" --appimage-extract || exit 1 ;;
        *) ./"$1" --appimage-extract || exit 1 ;;
    esac
    file="$1"
    shift
    dwarf squashfs-root "$@"
    rm -rf squashfs-root "$file"
    mv squashfs-root.sh "$(basename "$file" .AppImage)".sh
    exit 0
}


while true
do
    case "$1" in
        --help | -h) 
            exec appdwarf
            ;;
        --version | -v) 
            tput setaf 5
            echo appdwarf v"$VER"
            echo Maintained by phantop.
            exit 0
            ;;
        --folder | -f) 
            header_folder "$(realpath "$2")"
            shift 2
            ;;
        --lookback | -B) 
            BACK=$2
            shift 2
            ;;
        --separate | -s) 
            header_separate
            shift
            ;;

        --appimage | -a) 
            shift
            appimage "$@"
            ;;
        --url | -u)
            shift
            file=$(basename "$1")
            if which aria2c; then
                aria2c -x16 -s16 "$1" -o "$file" || exit 1
            else
                wget "$1" -O "$file" || exit 1
            fi
            shift
            appimage "$file" "$@"
            ;;
        --) 
            shift; break;;
        *) 
            break;;
    esac
done

dwarf "$@"