#!/bin/bash
#
# docbook_convertToXhtml.sh -- This function uses DocBook XML as input
# and applies XSL stylesheets to produce a big XHTML files as output.
# The procedure was taken from the documentation of
# `docbook-style-xsl-1.69.1-5.1' package, which says: ---To publish
# HTML from your XML documents, you just need an XSL engine.---.
#
# Copyright (C) 2009, 2010, 2011, 2012 The CentOS Project
#
# 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., 675 Mass Ave, Cambridge, MA 02139, USA.
#
# ----------------------------------------------------------------------
# $Id$
# ----------------------------------------------------------------------

function docbook_convertToXhtml {

    local -a STYLE_TEMPLATE
    local -a STYLE_INSTANCE
    local STYLE_INSTANCE_FINAL=''

    # Print action message.
    if [[ -f ${FILE}.xhtml ]];then
        cli_printMessage "${FILE}.xhtml" --as-updating-line
    else
        cli_printMessage "${FILE}.xhtml" --as-creating-line
    fi

    # Define absolute path to DocBook source file. This is the
    # repository documentation manual file where DOCTYPE and ENTITY
    # definition lines are set.
    local SRC=${INSTANCE}

    # Define absolute path to PDF target file. This is the final
    # location the PDF file produced as result of DocBook to PDF
    # transformation will be stored in.
    local DST="${FILE}.xhtml"

    # Prepare XSL final instances used in transformations.
    docbook_prepareStyles $(cli_getFilesList \
        ${DOCBOOK_XSL} --pattern='.*docbook2xhtml-(single|common)\.xsl')

    # Transform DocBook XML to XHTML supressing all stderr output.
    xsltproc --output ${DST} ${STYLE_INSTANCE_FINAL} ${SRC} &> /dev/null

    # Remove previous links first to prevent a recursive creation of
    # links.
    if [[ -a $(dirname ${DST})/Css ]];then
        rm $(dirname ${DST})/Css 
    fi
    if [[ -a $(dirname ${DST})/Images ]];then
        rm $(dirname ${DST})/Images
    fi

    # Create `css' and `images' directories. In order to save disk
    # space, these directories are linked (symbolically) to their
    # respective locations inside the working copy. 
    ln -fs ${TCAR_WORKDIR}/trunk/Identity/Webenv/Themes/Default/Docbook/1.69.1/Css $(dirname $DST)/Css
    ln -fs ${TCAR_WORKDIR}/trunk/Identity/Images/Webenv $(dirname $DST)/Images

    # Remove XSL instance files.
    rm ${STYLE_INSTANCE[*]}

}