libinput-gestures-setup

#!/bin/bash
# User setup script.
# (C) Mark Blakeney, Aug 2016.

PROG="$(basename $0)"
NAME=${PROG%-*}

BINDIR="/usr/bin"
APPDIR="/usr/share/applications"
ICOBAS="/usr/share/icons/hicolor"
ICODIR="$ICOBAS/128x128/apps"
OCODIR="/usr/share/pixmaps"
DOCDIR="/usr/share/doc/$NAME"
CNFDIR="/etc"
HCFDIR="${XDG_CONFIG_HOME:-$HOME/.config}"
AUTDIR="$HCFDIR/autostart"

usage() {
    echo "Usage:"
    echo "As root: sudo $PROG install|uninstall"
    echo "As user: $PROG start|stop|restart|autostart|autostop|status"
    echo
    echo "(-d option sets DESTDIR for install/uninstall)"
    exit 1
}

# Process command line options
DESTDIR=""
while getopts d: c; do
    case $c in
    d) DESTDIR="$OPTARG";;
    \?) usage;;
    esac
done

shift $((OPTIND - 1))

if [ $# -ne 1 ]; then
    usage
fi

cmd="$1"

# Launch given desktop app. First work out most suitable launcher.
# Pretty crude at present but should work for at least GNOME and KDE.
launch() {
    local app="$1"

    if echo $XDG_CURRENT_DESKTOP | grep -q KDE; then
	if hash kioclient5 &>/dev/null; then
	    kioclient5 exec "$APPDIR/$app.desktop" >/dev/null
	    return $?
	elif hash kioclient &>/dev/null; then
	    kioclient exec "$APPDIR/$app.desktop" >/dev/null
	    return $?
	fi
    fi

    if hash gtk-launch &>/dev/null; then
	gtk-launch "$app"
	return $?
    fi

    if hash i3-msg &>/dev/null; then
	i3-msg exec $BINDIR/$APP >/dev/null
	return $?
    fi

    echo "Don't know how to invoke $app.desktop" >&2
    return 1
}

# Set up desktop entry link for auto start of app, if it doesn't already
# exist
auto_start() {
    if [ ! -f $APPDIR/$NAME.desktop ] ; then
	if [ -e $AUTDIR/$NAME.desktop ]; then
	    echo "Removed old $AUTDIR/$NAME.desktop"
	    rm -f $AUTDIR/$NAME.desktop
	fi
	return 1
    fi

    if ! cmp -s $APPDIR/$NAME.desktop $AUTDIR/$NAME.desktop; then
	mkdir -p $AUTDIR
	cp $APPDIR/$NAME.desktop $AUTDIR
	echo "installed or updated $AUTDIR/$NAME.desktop"
    fi
    return 0
}

# Action given user command
user_action() {
    local cmd=$1

    if [ $cmd = "start" ]; then
	if [ ! -f $APPDIR/$NAME.desktop ]; then
	    echo "$NAME is not installed."
	    exit 1
	fi
	if launch "$NAME"; then
	    echo "$NAME started."
	fi
    elif [ $cmd = "stop" ]; then
	for prog in libinput-debug-events $NAME; do
	    if pkill -u $USER -f "$prog\$|$prog " &>/dev/null; then
		echo "$prog stopped."
	    fi
	done
    elif [ $cmd = "autostart" ]; then
	if ! auto_start; then
	    echo "$NAME is not installed."
	    exit 1
	fi
    elif [ $cmd = "autostop" ]; then
	rm -fv $AUTDIR/$NAME.desktop
    elif [ $cmd == "status" ]; then
	if [ -f $APPDIR/$NAME.desktop ]; then
	    echo "$NAME is installed."
	else
	    echo "$NAME is not installed."
	fi
	if [ -f $AUTDIR/$NAME.desktop ]; then
	    echo "$NAME is set to autostart."
	else
	    echo "$NAME is not set to autostart."
	fi
	if pgrep -u $USER -f "$NAME\$|$NAME " &>/dev/null; then
	    echo "$NAME is running."
	else
	    echo "$NAME is not running."
	fi
	if [ -f $HCFDIR/$NAME.conf ]; then
	    echo "$NAME is using custom configuration."
	else
	    echo "$NAME is using default configuration."
	fi
    else
	usage
    fi
}

if [ $cmd = "install" -o $cmd = "uninstall" ]; then
    DESTDIR=$(echo "$DESTDIR" | sed 's:/*$::')
    if [ -z "$DESTDIR" -a "$(id -un)" != "root" ]; then
	echo "Install or uninstall must be run as sudo/root."
	exit 1
    fi

    # Remove any old files from earlier versions of program
    rm -f $DESTDIR$OCODIR/$NAME.png

    if [ $cmd = "install" ]; then
	install -CDv -m 755 -t $DESTDIR$BINDIR $NAME-setup
	install -CDv -m 755 -t $DESTDIR$BINDIR $NAME
	install -CDv -m 644 -t $DESTDIR$APPDIR $NAME.desktop
	install -CDv -m 644 -t $DESTDIR$ICODIR $NAME.png
	install -CDv -m 644 -t $DESTDIR$CNFDIR $NAME.conf
	install -CDv -m 644 -t $DESTDIR$DOCDIR README.md
    else
	rm -rfv $DESTDIR$BINDIR/$NAME
	rm -rfv $DESTDIR$APPDIR/$NAME.desktop
	rm -rfv $DESTDIR$ICODIR/$NAME.png
	rm -rfv $DESTDIR$CNFDIR/$NAME.conf
	rm -rfv $DESTDIR$DOCDIR
	rm -rfv $DESTDIR$BINDIR/$NAME-setup
    fi

    if [ -z "$DESTDIR" ]; then
	if [ -x /usr/bin/update-desktop-database ]; then
	    /usr/bin/update-desktop-database -q
	fi
	if [ -x /usr/bin/gtk-update-icon-cache ]; then
	    /usr/bin/gtk-update-icon-cache $ICOBAS
	fi
    fi
else
    if [ "$(id -un)" = "root" ]; then
	echo "Non-installation commands must be run as your own user."
	exit 1
    fi

    # Remove any old configuration from earlier versions of program
    rm -fv ~/bin/$NAME
    rm -fv ~/.local/bin/$NAME
    rm -fv ~/.local/share/applications/$NAME.desktop
    rm -fv ~/.local/share/icons/$NAME.png

    # Look for and update any autostart file if it is a link or not
    # pointing to the latest desktop entry. Apparently user autostart
    # files should not be symlinks to system dir files.
    if [ -e $AUTDIR/$NAME.desktop ]; then
	if [ -L $AUTDIR/$NAME.desktop ]; then
	    echo "Removed old $AUTDIR/$NAME.desktop link"
	    rm -f $AUTDIR/$NAME.desktop
	fi
	auto_start
    fi

    if [ $cmd = "restart" ]; then
	user_action "stop"
	user_action "start"
    else
	user_action $cmd
    fi
fi

exit 0