#!/bin/bash

#

# render_convertHtmlToText.sh -- This function takes one HTML file

# and produces one plain-text file (i.e., without markup inside).

#

# Copyright (C) 2009-2011 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 render_convertHtml2Text {

    # Verify existence of HTML file.

    cli_checkFiles ${FILE}.xhtml 'f'

    local COMMAND=''

    local OPTIONS=''

    # Define the command path to text-based web browser and options

    # used to produce plain-text files. Most of these programs have a

    # dump option that print formatted plain-text versions of given

    # HTML file to stdout.

    if [[ -x '/usr/bin/lynx' ]];then

        COMMAND='/usr/bin/lynx'

        OPTIONS='-force_html -nolist -width 70 -dump'

    elif [[ -x '/usr/bin/elinks' ]];then

        COMMAND='/usr/bin/elinks'

        OPTIONS='-force_html -no-numbering -no-references -width 70 -dump'

    elif [[ -x '/usr/bin/w3m' ]];then

        COMMAND='/usr/bin/w3m'

        OPTIONS='-dump'

    fi

    if [[ $COMMAND != '' ]];then

        # Print action message.

        if [[ -f ${FILE}.txt ]];then

            cli_printMessage "${FILE}.txt" 'AsUpdatingLine'

        else

            cli_printMessage "${FILE}.txt" 'AsCreatingLine'

        fi

        # Convert from HTML to plain-text without markup.

        ${COMMAND} ${OPTIONS} ${FILE}.xhtml > ${FILE}.txt

    else

        cli_printMessage "`gettext "No way to convert from HTML to plain-text found."`" 'AsErrorLine'

        cli_printMessage "$(caller)" 'AsToKnowMoreLine'

    fi

}