#!/bin/bash

#

# svg_updateMetadata.sh -- This function replaces metadata section

# inside scalable vector graphic (SVG) files with one of pre-defined

# metadata templates available. Use this function to maintain metadata

# information inside repository.

#

#   Usage:

#   centos-art svg --update-metadata=path/to/dir --filter=filename

#

# In the above usage example `path/to/dir' represents the parent

# directory where scalable vector graphics you want to update metadata

# information are. The `--filter=filename' is optional and if provided

# just the file specificed is affected. Otherwise all files ending in

# `.svg' are massively modified.

#

# 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_updateMetadata {

    local TITLE=''

    local DATE=''

    local CREATOR=''

    local RIGHTS=''

    local PUBLISHER=''

    local COVERAGE=''

    local TEMPLATES=''

    local KEYWORDS=''

    local INSTANCE=''

    # Define absolute path to metadata templates parent directory.

    # This is the place where we store metadata template files.

    TEMPLATES=~/artwork/trunk/Scripts/Bash/Functions/Svg/Tpl

    # Define metadata template file we want to apply. More than one

    # metadata template file may exist, so let choosing which one to

    # use.

    cli_printMessage "`gettext "Select the metadata template you want to apply:"`"

    select TEMPLATE in $(ls $TEMPLATES);do

       TEMPLATE=$TEMPLATES/$TEMPLATE

       break

    done

    # Check metadata template file existence.

    cli_checkFiles $TEMPLATE 'f'

    # Define metadata template instance.

    INSTANCE=${TMPFILE}-$(basename $TEMPLATE)

    # Define svg document date.

    DATE=$(date +%Y-%m-%d)

    # Define svg document creator.

    CREATOR='CentOS Artwork SIG'

    # Define svg document rights.

    RIGHTS=$CREATOR

    # Define svg document publisher.

    PUBLISHER='The CentOS Project'

    # Define svg document coverage.

    COVERAGE=$PUBLISHER

    for FILE in $FILES;do

        # Define svg document title.

        TITLE=$(basename $FILE)

        # Define svg document keywords.

        KEYWORDS=$(echo $FILE | cut -d/ -f6- | tr '/' '\n')

        # Redifine keywords using SVG standard format. Note that this

        # information is inserted inside metadata template file. The

        # metadata template file is a replacement set of sed commands

        # so we need to escape the new line of each line using one

        # backslash (\). As we are doing this inside bash, it is

        # required to escape the backslash with another backslash so

        # it passes literally.

        KEYWORDS=$(\

           for KEY in $KEYWORDS;do

              echo "            <rdf:li>$KEY</rdf:li>\\"

           done)

        # Create metadata template instance.

        sed -r \

            -e "s!=TITLE=!$TITLE!" \

            -e "s!=DATE=!$DATE!" \

            -e "s!=CREATOR=!$CREATOR!" \

            -e "s!=RIGHTS=!$RIGHTS!" \

            -e "s!=PUBLISHER=!$PUBLISHER!" \

            -e "s!=COVERAGE=!$COVERAGE!" \

            -e "/=KEYWORDS=/c\\${KEYWORDS}" \

            $TEMPLATE > $INSTANCE

        sed -i -r -e 's/>$/>\\/g' $INSTANCE

        # Apply metadata template instance to scalable vector graphic

        # file.

        sed -i -f $INSTANCE $FILE

        # Remove metadata template instance.

        cli_checkFiles $INSTANCE 'f'

        rm $INSTANCE

    done \

        | awk -f /home/centos/artwork/trunk/Scripts/Bash/Styles/output_forTwoColumns.awk

    # Check repository changes and ask you to commit them up to

    # central repository.

    cli_commitRepoChanges

}