tryxkbmap

#!/bin/sh
# vi:sw=2:ts=2:noexpandtab:nowrap

warn()
{
	echo "$@"
}

die()
{
	echo "$@"
	exit 1
}

become_root()
{
	if [ `id -u` != 0 ]; then
		echo Becomming root...
		if ( sudo -E 2>&1 | grep 'illegal option' > /dev/null ); then
			sudo `readlink -f "$0"` "$@"
		else
			sudo -E `readlink -f "$0"` "$@"
		fi
		exit
	fi
}

cleanup()
{
	trap '' INT TERM HUP QUIT # Ignore while cleaning up
	trap - EXIT # Prevent reentrance if this is SIGINT, etc
	echo "cleaning up..."
	set -x
	cp -f "$tmp" "$kbmap" || die "failed to restore original keyboard map $tmp"
	setxkbmap || die "ERROR RESTORING KEYBOARD MAP! DO NOT REBOOT UNTIL THIS HAS BEEN RESOLVED!"
	rm -f "$tmp"

	exit 2 # becaus I caught INT
}

if [ "$1" = "-i" ]; then
	install='-i'
	shift
fi

file=$(readlink -f $1)
[ -f "$file" ] || die give me a file

kbmap="/usr/share/X11/xkb/symbols/nokia_vndr/rx-51"

become_root $install "$file"

tmp=$(mktemp /tmp/tryxkbmap.XXXXXX)
cp -f "$kbmap" "$tmp" || die unable to backup keyboard map

# I dunno wtf is going on, but cleanup from EXIT when the script was ctrl+Cd
# can only run built in commands, set -x shows external commands, but they are
# NOT run. If the script terminates normally it works, I don't know about
# TERM, QUIT, etc so I'll assume the worst
#trap cleanup EXIT
trap cleanup EXIT INT TERM HUP QUIT

md5sum "$kbmap"
cp -f "$file" "$kbmap" || die unable to install new keyboard map

setxkbmap || die "Problem with new keyboard map"

if [ "$install" = "-i" ]; then
	echo "Keyboard map installed. Old map in $tmp"
	trap - EXIT
else
	cp -f "$tmp" "$kbmap" || die "failed to restore original keyboard map $tmp"
	echo "Keyoard map installed, sleeping for 30 seconds while you try it..."
	sleep 30
fi