#!/bin/bash
#
# svg_vacuumDefs.sh -- This function removes all unused items from the
# <lt>defs<gt> section of the SVG file massively.
#
# 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 svg_vacuumDefs {

    # Define short options we want to support.
    local ARGSS=""

    # Define long options we want to support.
    local ARGSL="filter:"

    # Parse arguments using getopt(1) command parser.
    cli_doParseArguments

    # Reset positional parameters using output from (getopt) argument
    # parser.
    eval set -- "$ARGUMENTS"

    # Define action to take for each option passed.
    while true; do
        case "$1" in
            --filter )
               REGEX="$2" 
               shift 2
               ;;
            * )
                break
        esac
    done

    # Re-define regular expression to match scalable vector graphic
    # files only.
    REGEX=$(echo "${REGEX}\.(svgz|svg)")

    # Define list of files to process.
    cli_getFilesList

    # Process list of files.
    for FILE in $FILES;do

        # Output action message.
        cli_printMessage "$FILE" 'AsUpdatingLine'

        # Vacuum unused svg definition using inkscape.
        inkscape --vacuum-defs $FILE &> /dev/null

    done

    # Check repository changes and ask user to commit them up to
    # central repository.
    cli_commitRepoChanges

}