#!/bin/sh
#----------------------------------------------------------------------------------
# /var/install/bin/sort-menu - sort menu file on EIS/FAIR
#
# Copyright (c) 2001-2005 The Eisfair Team, c/o Frank Meyer, frank(at)eisfair(dot)org
#
# Creation:     2005-11-25  jed
# Last Update:  $Id$
#
# Usage:        sort-menu menu-file-name
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
#----------------------------------------------------------------------------------

# include eislib
. /var/install/include/eislib

#----------------------------------------------------------------------------------
# extract menu information
#----------------------------------------------------------------------------------
extract_menu_entries ()
{
    # menu entry
    echo "$line" | grep -q "^<"

    if [ $? -eq 0 ]
    then
        # new format
        echo "$line:$idx" | cut -d'>' -f2-
    else
        # old format
        echo "$line:$idx" | cut -d' ' -f2-
    fi
}

#----------------------------------------------------------------------------------
# write sorted menu to temporary file
#----------------------------------------------------------------------------------
write_sorted_menu ()
{
    # write sorted menu
    idx=1
    while read line
    do
        _oldifs=$IFS
        IFS=":"
        set $line
        IFS=$_oldifs

        sed -n ${2}p $menu_file | sed 's/^[ \t]*//' >> ${tmp_file}.2
    done < ${tmp_file}.1
}

#==================================================================================
# main
#==================================================================================

if [ $# -eq 0 ]
then
    # help
    mecho -warn "Insufficent parameters"
    mecho
    mecho "Usage: sort-menu menu-file-name"
    exit 1
else
    menu_file=$1

    echo $menu_file | grep -q "/"

    if [ $? -ne 0 ]
    then
        # add menu path
        menu_file="/var/install/menu/$menu_file"
    fi
fi

if [ ! -f $menu_file ]
then
    mecho -error "Menu file '$menu_file' cannot be found!"
    exit 1
fi

tmp_file=/tmp/sort_menu

rm -f ${tmp_file}.1  ${tmp_file}.2

if [ "`head -c1 $menu_file`" = "<" ]
then
    ### new menu format ###
    idx=1
    while read line
    do
        echo "$line" | grep -E -q "^<!--|^<package|^<title"

        if [ $? -eq 0 ]
        then
            # header
            echo "$line" >> ${tmp_file}.2
        else
            # menu
            extract_menu_entries
        fi

        idx=`expr $idx + 1`
    done < $menu_file | sort -f > ${tmp_file}.1

    write_sorted_menu
else
    ### old menu format ###
    idx=1
    while read line
    do
        if [ $idx -eq 1 ]
        then
            # header
            echo "$line" > ${tmp_file}.2
        else
            # menu
            extract_menu_entries
        fi

        idx=`expr $idx + 1`
    done < $menu_file | sort -f > ${tmp_file}.1

  write_sorted_menu
fi

/var/install/bin/backup-file $menu_file backup

cp ${tmp_file}.2 ${menu_file}
rm -f ${tmp_file}.1  ${tmp_file}.2

#==================================================================================
# End
#==================================================================================