#!/bin/bash

#

# help_updateChaptersMenu.sh - This function updates chapter menu.

#

# Copyright (C) 2009, 2010 Alain Reguera Delgado

# 

# 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.

# 

# This program is distributed in the hope that it will be useful, but

# WITHOUT ANY WARRANTY; without even the implied warranty of

# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU

# General Public License for more details.

#

# You should have received a copy of the GNU General Public License

# along with this program; if not, write to the Free Software

# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307

# USA.

# 

# ----------------------------------------------------------------------

# $Id$

# ----------------------------------------------------------------------

function help_updateChaptersMenu {

    local ACTION=$1

    local MENUCHAPTERS=''

    # Build menu of chapters. The Index node is not included as other

    # nodes are. The Index node is defined insde the master texinfo

    # file (repository.texi). To create the final .info file

    # correctly, the Index line in the menu should remain, even no

    # other node exist.

    if [[ -f ${MANUALS_FILE[2]} ]];then

        MENUCHAPTERS=$(cat ${MANUALS_FILE[2]} \

            | egrep -v "^(@(end )?menu$|\* `gettext "Index"`::.*)$")

    fi

    # Re-defined menu of chapters based on action.

    case $ACTION in

        'remove-entry' )

            # Remove chapter from menu.

            MENUCHAPTERS=$(echo "$MENUCHAPTERS" \

                | egrep -v "^\* ${CHAPTERNAME}::[[:print:]]*$")

            ;;

        'update-entry' | * )

            # Update chapter menu using texinfo format.

            MENUCHAPTERS="$MENUCHAPTERS

                * $CHAPTERNAME::"

            ;;

    esac

    # Remove opening spaces/tabs and empty line from the menu of

    # chapters. Empty lines may occur the first time the menu of

    # chapters is created.

    MENUCHAPTERS=$(echo "$MENUCHAPTERS" | sed -r 's!^[[:space:]]+!!' \

        | egrep -v '^[[:space:]]*$')

    # Organize menu of chapters alphabetically and verify that no

    # duplicated line be included on the list.

    MENUCHAPTERS=$(echo "$MENUCHAPTERS" | sort | uniq )

    # Give format to final menu output.

    MENUCHAPTERS="@menu

    $MENUCHAPTERS

    * `gettext "Index"`::

    @end menu"

    # Strip opening space/tabs from final menu of chapters.

    MENUCHAPTERS=$(echo "$MENUCHAPTERS" | sed -r 's!^[[:space:]]+!!' \

        | egrep -v '^[[:space:]]*$')

    # Dump organized menu of chapters into file.

    echo "$MENUCHAPTERS" > ${MANUALS_FILE[2]}

}