3 * StatusNet, the distributed open-source microblogging tool
5 * Utilities for theme files and paths
9 * LICENCE: This program is free software: you can redistribute it and/or modify
10 * it under the terms of the GNU Affero General Public License as published by
11 * the Free Software Foundation, either version 3 of the License, or
12 * (at your option) any later version.
14 * This program is distributed in the hope that it will be useful,
15 * but WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 * GNU Affero General Public License for more details.
19 * You should have received a copy of the GNU Affero General Public License
20 * along with this program. If not, see <http://www.gnu.org/licenses/>.
24 * @author Evan Prodromou <evan@status.net>
25 * @author Sarven Capadisli <csarven@status.net>
26 * @copyright 2008-2009 StatusNet, Inc.
27 * @license http://www.fsf.org/licensing/licenses/agpl-3.0.html GNU Affero General Public License version 3.0
28 * @link http://status.net/
31 if (!defined('STATUSNET') && !defined('LACONICA')) {
36 * Class for querying and manipulating a theme
38 * Themes are directories with some expected sub-directories and files
39 * in them. They're found in either local/theme (for locally-installed themes)
40 * or theme/ subdir of installation dir.
42 * Note that the 'local' directory can be overridden as $config['local']['path']
43 * and $config['local']['dir'] etc.
45 * This used to be a couple of functions, but for various reasons it's nice
46 * to have a class instead.
50 * @author Evan Prodromou <evan@status.net>
51 * @license http://www.fsf.org/licensing/licenses/agpl-3.0.html GNU Affero General Public License version 3.0
52 * @link http://status.net/
64 * Determines the proper directory and path for this theme.
66 * @param string $name Name of the theme; defaults to config value
69 function __construct($name=null)
72 $name = common_config('site', 'theme');
74 if (!self::validName($name)) {
75 throw new ServerException("Invalid theme name.");
79 // Check to see if it's in the local dir
81 $localroot = self::localRoot();
83 $fulldir = $localroot.'/'.$name;
85 if (file_exists($fulldir) && is_dir($fulldir)) {
86 $this->dir = $fulldir;
87 $this->path = $this->relativeThemePath('local', 'local', 'theme/' . $name);
91 // Check to see if it's in the distribution dir
93 $instroot = self::installRoot();
95 $fulldir = $instroot.'/'.$name;
97 if (file_exists($fulldir) && is_dir($fulldir)) {
99 $this->dir = $fulldir;
100 $this->path = $this->relativeThemePath('theme', 'theme', $name);
105 * Build a full URL to the given theme's base directory, possibly
106 * using an offsite theme server path.
108 * @param string $group configuration section name to pull paths from
109 * @param string $fallbackSubdir default subdirectory under INSTALLDIR
110 * @param string $name theme name
114 * @todo consolidate code with that for other customizable paths
117 protected function relativeThemePath($group, $fallbackSubdir, $name)
119 if (StatusNet::isHTTPS()) {
121 $sslserver = common_config($group, 'sslserver');
123 if (empty($sslserver)) {
124 $server = common_config('site', 'server');
125 $path = common_config('site', 'path') . '/';
126 if ($fallbackSubdir) {
127 $path .= $fallbackSubdir . '/';
130 $server = $sslserver;
131 $path = common_config($group, 'sslpath');
133 $path = common_config($group, 'path');
141 $path = common_config($group, 'path');
144 $path = common_config('site', 'path') . '/';
145 if ($fallbackSubdir) {
146 $path .= $fallbackSubdir . '/';
150 $server = common_config($group, 'server');
152 if (empty($server)) {
153 $server = common_config('site', 'server');
159 if ($path[strlen($path)-1] != '/') {
163 if ($path[0] != '/') {
167 return $protocol.'://'.$server.$path.$name;
171 * Gets the full local filename of a file in this theme.
173 * @param string $relative relative name, like 'logo.png'
175 * @return string full pathname, like /var/www/mublog/theme/default/logo.png
178 function getFile($relative)
180 return $this->dir.'/'.$relative;
184 * Gets the full HTTP url of a file in this theme
186 * @param string $relative relative name, like 'logo.png'
188 * @return string full URL, like 'http://example.com/theme/default/logo.png'
191 function getPath($relative)
193 return $this->path.'/'.$relative;
197 * Fetch a list of other themes whose CSS needs to be pulled in before
198 * this theme's, based on following the theme.ini 'include' settings.
199 * (May be empty if this theme has no include dependencies.)
201 * @return array of strings with theme names
205 $chain = $this->doGetDeps(array($this->name));
206 array_pop($chain); // Drop us back off
210 protected function doGetDeps($chain)
212 $data = $this->getMetadata();
213 if (!empty($data['include'])) {
214 $include = $data['include'];
216 // Protect against cycles!
217 if (!in_array($include, $chain)) {
219 $theme = new Theme($include);
220 array_unshift($chain, $include);
221 return $theme->doGetDeps($chain);
222 } catch (Exception $e) {
224 "Exception while fetching theme dependencies " .
225 "for $this->name: " . $e->getMessage());
233 * Pull data from the theme's theme.ini file.
234 * @fixme calling getFile will fall back to default theme, this may be unsafe.
236 * @return associative array of strings
238 function getMetadata()
240 $iniFile = $this->getFile('theme.ini');
241 if (file_exists($iniFile)) {
242 return parse_ini_file($iniFile);
249 * Gets the full path of a file in a theme dir based on its relative name
251 * @param string $relative relative path within the theme directory
252 * @param string $name name of the theme; defaults to current theme
254 * @return string File path to the theme file
257 static function file($relative, $name=null)
259 $theme = new Theme($name);
260 return $theme->getFile($relative);
264 * Gets the full URL of a file in a theme dir based on its relative name
266 * @param string $relative relative path within the theme directory
267 * @param string $name name of the theme; defaults to current theme
269 * @return string URL of the file
272 static function path($relative, $name=null)
274 $theme = new Theme($name);
275 return $theme->getPath($relative);
279 * list available theme names
281 * @return array list of available theme names
284 static function listAvailable()
286 $local = self::subdirsOf(self::localRoot());
287 $install = self::subdirsOf(self::installRoot());
289 $i = array_search('base', $install);
293 return array_merge($local, $install);
297 * Utility for getting subdirs of a directory
299 * @param string $dir full path to directory to check
301 * @return array relative filenames of subdirs, or empty array
304 protected static function subdirsOf($dir)
309 if ($dh = opendir($dir)) {
310 while (($filename = readdir($dh)) !== false) {
311 if ($filename != '..' && $filename !== '.' &&
312 is_dir($dir.'/'.$filename)) {
313 $subdirs[] = $filename;
324 * Local root dir for themes
326 * @return string local root dir for themes
329 protected static function localRoot()
331 $basedir = common_config('local', 'dir');
333 if (empty($basedir)) {
334 $basedir = INSTALLDIR . '/local';
337 return $basedir . '/theme';
341 * Root dir for themes that are shipped with StatusNet
343 * @return string root dir for StatusNet themes
346 protected static function installRoot()
348 $instroot = common_config('theme', 'dir');
350 if (empty($instroot)) {
351 $instroot = INSTALLDIR.'/theme';
357 static function validName($name)
359 return preg_match('/^[a-z0-9][a-z0-9_-]*$/i', $name);