+<?php
+/**
+ * StatusNet - the distributed open-source microblogging tool
+ * Copyright (C) 2011, StatusNet, Inc.
+ *
+ * Utility for finding and parsing documentation files
+ *
+ * PHP version 5
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation, either version 3 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 Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ *
+ * @category Documentation
+ * @package StatusNet
+ * @author Evan Prodromou <evan@status.net>
+ * @copyright 2011 StatusNet, Inc.
+ * @license http://www.fsf.org/licensing/licenses/agpl-3.0.html AGPL 3.0
+ * @link http://status.net/
+ */
+
+if (!defined('STATUSNET')) {
+ // This check helps protect against security problems;
+ // your code file can't be executed directly from the web.
+ exit(1);
+}
+
+/**
+ * Utility for finding and parsing documentation files
+ *
+ * @category Documentation
+ * @package StatusNet
+ * @author Evan Prodromou <evan@status.net>
+ * @copyright 2011 StatusNet, Inc.
+ * @license http://www.fsf.org/licensing/licenses/agpl-3.0.html AGPL 3.0
+ * @link http://status.net/
+ */
+
+class DocFile
+{
+ protected $filename;
+ protected $contents;
+
+ function __construct($filename)
+ {
+ $this->filename = $filename;
+ }
+
+ static function forTitle($title, $paths)
+ {
+ if (is_string($paths)) {
+ $paths = array($paths);
+ }
+
+ $filename = null;
+
+ foreach ($paths as $path) {
+
+ $def = $path.'/'.$title;
+ if (!file_exists($def)) {
+ $def = null;
+ }
+
+ $lang = glob($path.'/'.$title.'.*');
+
+ if ($lang === false) {
+ $lang = array();
+ }
+
+ if (!empty($lang) || !empty($def)) {
+ $filename = self::negotiateLanguage($lang, $def);
+ break;
+ }
+ }
+
+ if (empty($filename)) {
+ return null;
+ } else {
+ return new DocFile($filename);
+ }
+ }
+
+ function toHTML()
+ {
+ if (empty($this->contents)) {
+ $this->contents = file_get_contents($this->filename);
+ }
+
+ $this->output = common_markup_to_html($this->contents);
+ }
+
+ static function defaultPaths()
+ {
+ $paths = array(INSTALLDIR.'/local/doc-src/',
+ INSTALLDIR.'/doc-src/');
+
+ $site = StatusNet::currentSite();
+
+ if (!empty($site)) {
+ array_unshift($paths, INSTALLDIR.'/local/doc-src/'.$site.'/');
+ }
+ }
+
+ static function negotiateLanguage($filenames, $defaultFilename=null)
+ {
+ // XXX: do this better
+
+ $langcode = common_language();
+
+ foreach ($filenames as $filename) {
+ if (preg_match('/\.'.$langcode.'$/', $filename)) {
+ return $filename;
+ }
+ }
+
+ return $defaultFilename;
+ }
+}