<?php
/* -*- tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/*
# ***** BEGIN LICENSE BLOCK *****
# This file is part of InDefero, an open source project management application.
# Copyright (C) 2008 Céondo Ltd and contributors.
#
# InDefero 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.
#
# InDefero 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., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
#
# ***** END LICENSE BLOCK ***** */

Pluf::loadFunction('Pluf_Text_MarkDown_parse');

function IDF_Template_Markdown_filter($mdtext)
{
    $filter = new IDF_Template_Markdown();
    return Pluf_Template::markSafe(Pluf_Text_MarkDown_parse($filter->go($mdtext)));
}

/**
 * Strict class to only allow entities.
 */
class IDF_Template_Markdown extends Pluf_Text_HTML_Filter
{
    public $allowed = array();
    public $always_close = array();
    public $remove_blanks = array();
    public $allowed_entities = array(
                                     'amp',
                                     'gt',
                                     'lt',
                                     'quot',
                                     'nbsp',
                                     'ndash',
                                     'rdquo',
                                     'ldquo',
                                     'Alpha',
                                     'Beta', 
                                     'Gamma', 
                                     'Delta', 
                                     'Epsilon', 
                                     'Zeta', 
                                     'Eta', 
                                     'Theta', 
                                     'Iota', 
                                     'Kappa', 
                                     'Lambda', 
                                     'Mu', 
                                     'Nu', 
                                     'Xi', 
                                     'Omicron', 
                                     'Pi', 
                                     'Rho', 
                                     'Sigma', 
                                     'Tau', 
                                     'Upsilon', 
                                     'Phi', 
                                     'Chi', 
                                     'Psi', 
                                     'Omega', 
                                     'alpha', 
                                     'beta', 
                                     'gamma', 
                                     'delta', 
                                     'epsilon', 
                                     'zeta', 
                                     'eta', 
                                     'theta', 
                                     'iota', 
                                     'kappa', 
                                     'lambda', 
                                     'mu', 
                                     'nu', 
                                     'xi', 
                                     'omicron', 
                                     'pi', 
                                     'rho', 
                                     'sigmaf', 
                                     'sigma', 
                                     'tau', 
                                     'upsilon', 
                                     'phi', 
                                     'chi', 
                                     'psi', 
                                     'omega', 
                                     'thetasym', 
                                     'upsih', 
                                     'piv',
                                     );
}