#!/bin/sh
# -*- shell-script -*-

[ x"$1" = x-n ] && { TE=echo; shift; } || TE=

echo2 () { echo "$@" >&2; }
die () { echo2 "$@"; exit 1; }

x () { echo2 "$@"; "$@"; }

ID=`id | sed 's/(.*//;s/.*=//'`

chkroot ()
{
    [ x$ID = x0 -o x"$TE" != x ] && return
    { cut -d: -f2- | sed "s/  *'$/'/g" >&2; } <<.
	: This command requres root access
	: Please run either:
	:    sudo $0 $cmd $@
	:  or
	:    su -c '$0 $cmd $@'
.
    exit 1
}

chkvdso ()
{
	case `/scratchbox/tools/bin/echo jee 2>/dev/null` in
		jee) true ;;
		*) false ;;
	esac
}

cmd_readme () # some notes and instructions (FIXME no content yet)
{
    cut -d: -f2- <<EOF
	:
	: FIXME
	:
EOF
}


cmd_start () ## start scratchbox environment
{
    chkroot "$@"
    test -f /proc/sys/vm/vdso_enabled && echo 0 > /proc/sys/vm/vdso_enabled
    test -f /proc/sys/kernel/vdso && echo 0 > /proc/sys/kernel/vdso
    /scratchbox/sbin/sbox_ctl start
}

cmd_xephyr () # run Xephyr for Maemo with suitable parameters.
{
	case `which Xephyr 2>/dev/null` in
	    /*) ;;
	    *) die Install Xeprhyr on your system first ;;
	esac
	x Xephyr :2 -host-cursor -screen 800x480x16 -dpi 96 -ac &
	sleep 1
	echo Run ''
	exit 0
	# Xephyr does not seem to exist here anymore
	pfx=/scratchbox/users/${LOGNAME}/targets/SDK_PC/usr
	export LD_LIBRARY_PATH=${pfx}/lib; export LD_LIBRARY_PATH
	exec ${pfx}/bin/Xephyr :2 -host-cursor -screen 800x480x16 -dpi 96 -ac &
}

cmd__xvnc () # # run xvnc with suitable args (alternative to xephyr)
{
	rm -f ~tmp/maemovncpw-$USER &
	# Xvnc is in vnc-server package
	Xvnc -geometry 800x480 -dpi 72 -ac :2  -depth 16 \
		-rfbauth /tmp/maemovncpw-$USER &

	{ sleep 1; echo vvnncc; sleep 1; echo vvnncc; sleep 1; } \
		| vncpasswd /tmp/maemovncpw-$USER
	echo
}

cmd__view () # # run vncviewer that connects to xvnc...
{
	# vncviewer is in vnc package
	vncviewer -passwd /tmp/maemovncpw-$USER :2 &

	echo Now, in terminal where you entered $0 login, enter
	echo
	echo ' ' af-sb-init.sh start
	echo
}

cmd_login () ## login
{
	chkvdso || die run '' $0 start '' as root
	LANGUAGE=en_GB PAGER=less DISPLAY=:2
	export LANGUAGE PAGER DISPLAY
	echo
	echo If login below fails, run '' $0 start '' as root first
	echo
	x exec /scratchbox/login -k
}

# --

[ x"$1" = x ] && {
	echo
	echo Usage: $0 ' <command> [args]'
	echo
	echo $0 commands available:
	echo
	sed -n '/^cmd_[a-z]/ { s/cmd_/ /; s/ () [ -#]*/                       /
			  s/\(.\{11\}\) */\1/p; }' $0
	echo
	echo Commands may be abbreviated down to no ambiguity
	echo
	exit 0
}

cmd=$1; shift

case $cmd in
	d) cmd=diff ;;
esac

cc= cp=
for m in `sed -n 's/^cmd_\([a-z0-9_]*\) (.*/\1/p' $0`
do
	case $m in
		$cmd) cp= cc=$cmd cm=$cmd; break ;;
		$cmd*) cp=$cc; cc="$m $cc"; cm=$m ;;
	esac
done

[ x"$cc" = x ] && { echo $0: $cmd -- command not found.; exit 1; }

[ x"$cp" != x ] && { echo $0: $cmd -- ambiquous command: matches $cc; exit 1; }

cmd=$cm
cmd_$cm "$@"