#!/bin/sh
# Copyright 2008 Bernd Steinhauser <berniyh@exherbo.org>
# Copyright 2008 Benjamin Kellermann
# Copyright 2008 Pascal Hauck
# Copyright 2008 Erik Streb del Toro
# Distributed under the terms of the GNU General Public License v3

if [ -f "${NEO_CONFIG}" ]; then
	. "${NEO_CONFIG}" || die "Failed to source ${NEO_CONFIG}"
elif [ -f "${HOME}"/.neorc ]; then
	. "${HOME}"/.neorc || die "Failed to source ${HOME}/.neorc"
elif [ -f /etc/neo.conf ]; then
	. /etc/neo.conf || die "Failed to source /etc/neo.conf"
else
	echo "No configuration file found. Using default values, this might fail!"
fi

# Default paths
PATH_XMODMAP=${PATH_XMODMAP:-/usr/bin/xmodmap}
PATH_SETXKBMAP=${PATH_SETXKBMAP:-/usr/bin/setxkbmap}
PATH_LOADKEYS=${PATH_LOADKEYS:-/usr/bin/loadkeys}
PATH_SUDO=${PATH_SUDO:-/usr/bin/sudo}
PATH_SETLEDS=${PATH_SETLEDS:-/usr/bin/setleds}
PATH_NUMLOCKX=${PATH_NUMLOCKX:-/usr/bin/numlockx}
PATH_XSET=${PATH_XSET:-/usr/bin/xset}

# Default values
NEO_X_VARIANTE=${NEO_X_VARIANTE:-xkbmap}
NEO_X_VARIANTE=${1-$NEO_X_VARIANTE}
NEO_XKBMAP=${NEO_XKBMAP:-de}
NEO_XKBVARIANT=${NEO_XKBVARIANT:-neo}
NEO_XMODMAP=${NEO_XMODMAP:-$HOME/neo/neo_de.xmodmap}
NEO_XMODMAP_XPROG=${NEO_XMODMAP_XPROG:-$HOME/neo/neo_de_x-prog.xmodmap}
NEO_XMODMAP_ALTERNATIVE=${NEO_XMODMAP_ALTERNATIVE:-$HOME/neo/neo_de_alternative.xmodmap}
NEO_XMODMAP_EVDEV=${NEO_XMODMAP_EVDEV:-$HOME/neo/neo_de_evdev.xmodmap}
NEO_CONSOLE_KEYMAP=${NEO_CONSOLE_KEYMAP:-$HOME/neo/neo} # for $HOME/neo/neo.map (without the „.map“)

die() {
	echo "$@" >&2
	exit 1
}

set_xmodmap() {
	if [ -e "${PATH_XMODMAP}" ]; then
		if [ -f "$@" ]; then
			set_xkbmap ie
			"${PATH_XMODMAP}" "$@" || ( set_xkbmap de ; die "Failed to set xmodmap $@." )
		else
			die "Cannot use $@ for xmodmap."
		fi
	else
		die "xmodmap not found, cannot set xmodmap."
	fi
}

set_xkbmap() {
	if [ -e "${PATH_SETXKBMAP}" ]; then
		"${PATH_SETXKBMAP}" "$@" || die "Failed to select xkbmap $@."
	else
		die "setxkbmap not found, cannot set xkbmap."
	fi
}

set_keymap() {
	if [ -e "${PATH_LOADKEYS}" ]; then
		if [ -f "$@" ]; then
			if [ "${EUID}" = 0 ]; then
				"${PATH_LOADKEYS}" "$@" || die "Failed to set keymap $@."
			elif [ -e "${PATH_SUDO}" ]; then
				"${PATH_SUDO}" "${PATH_LOADKEYS}" "$@" || die "Failed to set keymap using sudo."
			else
				die "You need root priviliges to change the keymap."
			fi
		else
			die "keymap file $@ does not exist."
		fi
	else
		die "loadkeys not found, cannot set keymap."
	fi
}

if [ -n "$SSH_CONNECTION" ]; then
	die "Cannot set keybord layout in a ssh session."
fi

if [ -z ${DISPLAY} ]; then
	set_keymap "${NEO_CONSOLE_KEYMAP}"

	if [ -e "${PATH_SETLEDS}" ]; then
		"${PATH_SETLEDS}" +num || die "Failed to set NUM status."
	else
		die "setleds does not exist, cannot set NUM status."
	fi
else
	if [ -e "${PATH_NUMLOCKX}" ]; then
		"${PATH_NUMLOCKX}" off || die "Failed to turn off Numlock."
	else
		die "numlockx not found, cannot turn off Numlock."
	fi

	if [ -e "${PATH_XSET}" ]; then
		for modifier in 51 94; do
			"${PATH_XSET}" -r ${modifier} || die "Failed to unset repeat for modifier ${modifier}."
		done
		for deadkey in 21 35 49; do
			"${PATH_XSET}" -r ${deadkey} || die "Failed to unset repeat for deadkey ${deakey}."
		done
	else
		die "xset not found, cannot set modifiers and dead keys."
	fi

	case "${NEO_X_VARIANTE}" in
		xkbmap)
			set_xkbmap "${NEO_XKBMAP}" "${NEO_XKBVARIANT}"
			;;
		xmodmap)
			set_xmodmap "${NEO_XMODMAP}"
			;;
		xprog)
			set_xmodmap "${NEO_XMODMAP_XPROG}"
			;;
		alternative)
			set_xmodmap "${NEO_XMODMAP_ALTERNATIVE}"
			;;
		evdev)
			set_xmodmap "${NEO_XMODMAP_EVDEV}"
			;;
		*)
			die "Unknown Neo X variant ${NEO_X_VARIANTE}."
			;;
	esac
fi