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#!/bin/sh
# -*- Mode: shell-script -*-
# Copyright (C) 2002 by Chmouel Boudjnah <chmouel@mandrakesoft.com>
# Redistribution of this file is permitted under the terms of the GNU 
# Public License (GPL)
# 	$Id$	

plymouthdir=/usr/share/plymouth
sysconfig=/etc/sysconfig/bootsplash
bootdir=/boot

function list_available_themes () {
    local basename=
    for i in $plymouthdir/themes/*;do
	basename=${i##*/}
	echo $basename
    done
}

function get_current_theme () {
    local opt= theme=
    while read opt ;do
	[[ $opt != THEME=* ]] && continue
	theme=${opt##*=}
    done < $sysconfig
    #[[ -z $theme ]] && theme="Mandriva"
    echo $theme
}

function read_link () {
    perl -e '{print readlink shift, "\n"}' $1
}

function grub_switch_themes () {
    if [ -x /usr/sbin/grub-gfxmenu ]; then
	/usr/sbin/grub-gfxmenu --update-theme
    fi
}

function check_it () {
    local theme=$1
    local ok= c=

    for c in $(list_available_themes);do
	[[ $c == $theme ]] && ok=yes
    done
    if [[ -z $ok ]];then
	echo -e "Themes $theme doen't exist\n";
	bash $0 -l
	exit;
    fi
}

function update () {
    local theme=$1;

    rm -f /usr/share/gfxboot/themes/current
    ln -s $theme /usr/share/gfxboot/themes/current

    if [[ -z $update ]]; then
	    /usr/sbin/plymouth-set-default-theme $theme
    fi

    [ -f /usr/lib/libDrakX/Xconfig/resolution_and_depth.pm ] && perl -I/usr/lib/libDrakX  -MXconfig::xfree -MXconfig::resolution_and_depth -e 'Xconfig::resolution_and_depth::set_default_background(Xconfig::xfree->read->get_resolution)' 


}

function switch_theme () {
    local toswitch=$1
    local current_theme=$(get_current_theme)
    local ok= c=

    #Seeding
    if [[ $current_theme != $toswitch ]];then
	ok=
	tmpfile=$(mktemp /tmp/.bootsplash.XXXXXXX)
	cp -f $sysconfig $tmpfile && rm -f $sysconfig
	while read line;do
	    if [[ $line == SPLASH=* ]];then 
		echo "SPLASH=auto" >> $sysconfig
		continue;
	    fi
	    if [[ $line == THEME=* ]];then 
		echo "THEME=$toswitch" >> $sysconfig
		ok=yes
		continue;
	    fi
	    echo $line >> $sysconfig
	done < $tmpfile
	if [[ -z $ok ]];then
	    echo "THEME=$toswitch" >> $sysconfig
	fi
	rm -f $tmpfile
	update $toswitch
    fi
    grub_switch_themes $toswitch
}

function update_boot () {
    if [[ -x /usr/sbin/bootloader-config ]]; then 
        /usr/sbin/bootloader-config --action update-splash --kernel-version $(uname -r)
    fi 
}

function usage () {
    basename=`basename $0`
    cat <<EOF
     $basename OPTIONS THEMES

OPTIONS:
       -c:  Tell you the current themes
       -l:  List themes available.
       -u:  Update current theme.
EOF
    exit 1
}
    
update=
while getopts uhlc opt;do
  case "$opt" in
      u) 
	  update=yes ;;
      c) 
	  echo -n "The current theme is: ";get_current_theme; exit;;
      l) 
	  echo "Available themes are :"
	  for i in $(list_available_themes);do echo -e "\t\t\t$i";done;
	  exit;
	  ;;
      h) usage;;
      *) usage;;
  esac
done
shift $((OPTIND - 1))

theme=$1

if [[ -n $update ]];then
    if [[ -n $theme ]];then
	echo "No argument when updating";
	echo
	usage
    fi
    update $(get_current_theme)
    exit;
fi

[[ -z $theme ]] &&  usage;

check_it $theme
switch_theme $theme
update_boot