<?php

/*
 * LMS version 1.11-git
 *
 *  (C) Copyright 2001-2014 LMS Developers
 *
 *  Please, see the doc/AUTHORS for more information about authors!
 *
 *  This program is free software; you can redistribute it and/or modify
 *  it under the terms of the GNU General Public License Version 2 as
 *  published by the Free Software Foundation.
 *
 *  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 smarty_modifier_striphtml($args)
{
    $search = array ("'<script[^>]*?>.*?</script>'si",  // Strip out javascript
            "'<[\/\!]*?[^<>]*?>'si",           // Strip out html tags
            "'([\r\n])[\s]+'",                 // Strip out white space
            "'&(quot|#34);'i",                 // Replace html entities
            "'&(amp|#38);'i",
            "'&(lt|#60);'i",
            "'&(gt|#62);'i",
            "'&(nbsp|#160);'i",
            "'&(iexcl|#161);'i",
            "'&(cent|#162);'i",
            "'&(pound|#163);'i",
            "'&(copy|#169);'i");

    $replace = array ("",
            "\\1",
            "\"",
            "&",
            "<",
            ">",
            " ",
            chr(161),
            chr(162),
            chr(163),
            chr(169));

    $args = preg_replace($search, $replace, $args);
    return preg_replace_callback(
        "'&#(\d+);'",
        function ($m) {
            return chr($m[1]);
        },
        $args
    );
}
