skodak
97 lines
4.3 KiB
PHP
97 lines
4.3 KiB
PHP
<?php //$Id$
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///////////////////////////////////////////////////////////////////////////
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// //
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// This program is part of Moodle - Modular Object-Oriented Dynamic //
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// Learning Environment - http://moodle.org //
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// //
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// Copyright (C) 2004 Gaetan Frenoy <gaetan@frenoy.net> //
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// Eloy Lafuente <stronk7@moodle.org> //
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// //
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// This program is free software; you can redistribute it and/or modify //
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// it under the terms of the GNU General Public License as published by //
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// the Free Software Foundation; either version 2 of the License, or //
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// (at your option) any later version. //
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// //
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// This program is distributed in the hope that it will be useful, //
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// but WITHOUT ANY WARRANTY; without even the implied warranty of //
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the //
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// GNU General Public License for more details: //
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// //
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// http://www.gnu.org/copyleft/gpl.html //
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// //
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///////////////////////////////////////////////////////////////////////////
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// Given XML multilinguage text, return relevant text according to
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// current language:
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// - look for multilang blocks in the text.
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// - if there exists texts in the currently active language, print them.
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// - else, if there exists texts in the current parent language, print them.
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// - else, print the first language in the text.
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// Please note that English texts are not used as default anymore!
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//
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// This version is based on original multilang filter by Gaetan Frenoy,
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// rewritten by Eloy and skodak.
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//
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// Following new syntax is not compatible with old one:
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// <span lang="XX" class="multilang">one lang</span><span lang="YY" class="multilang">another language</span>
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function multilang_filter($courseid, $text) {
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global $CFG;
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// [pj] I don't know about you but I find this new implementation funny :P
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// [skodak] I was laughing while rewriting it ;-)
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if (empty($CFG->filter_multilang_force_old) and !empty($CFG->filter_multilang_converted)) {
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// new syntax
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$search = '/(<span lang="[a-zA-Z0-9_-]+" class="multilang">.*?<\/span>)(\s*<span lang="[a-zA-Z0-9_-]+" class="multilang">.*?<\/span>)+/is';
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} else {
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// old syntax
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$search = '/(<(?:lang|span) lang="[a-zA-Z0-9_-]*".*?>.*?<\/(?:lang|span)>)(\s*<(?:lang|span) lang="[a-zA-Z0-9_-]*".*?>.*?<\/(?:lang|span)>)+/is';
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}
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return preg_replace_callback($search, 'multilang_filter_impl', $text);
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}
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function multilang_filter_impl($langblock) {
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global $CFG;
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$mylang = str_replace('_utf8', '', current_language());
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static $parentcache;
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if (!isset($parentcache)) {
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$parentcache = array();
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}
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if (!array_key_exists($mylang, $parentcache)) {
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$parentlang = str_replace('_utf8', '', get_string('parentlanguage'));
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$parentcache[$mylang] = $parentlang;
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} else {
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$parentlang = $parentcache[$mylang];
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}
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if (empty($CFG->filter_multilang_force_old) and !empty($CFG->filter_multilang_converted)) {
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// new syntax
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$searchtosplit = '/<span lang="([a-zA-Z0-9_-]+)" class="multilang">(.*?)<\/span>/is';
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} else {
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// old syntax
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$searchtosplit = '/<(?:lang|span) lang="([a-zA-Z0-9_-]*)".*?>(.*?)<\/(?:lang|span)>/is';
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}
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preg_match_all($searchtosplit, $langblock[0], $rawlanglist);
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$langlist = array();
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foreach ($rawlanglist[1] as $index=>$lang) {
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$lang = str_replace('_utf8', '', str_replace('-','_',strtolower($lang))); // normalize languages
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$langlist[$lang] = $rawlanglist[2][$index];
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}
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if (array_key_exists($mylang, $langlist)) {
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return $langlist[$mylang];
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} else if (array_key_exists($parentlang, $langlist)) {
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return $langlist[$parentlang];
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} else {
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$first = array_shift($langlist);
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return $first;
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}
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}
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?>
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