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/
59 protected $metadata = null; // access via getMetadata() lazy-loader
60 protected $externals = null;
61 protected $deps = null;
66 * Determines the proper directory and path for this theme.
68 * @param string $name Name of the theme; defaults to config value
70 function __construct($name=null)
73 $name = common_config('site', 'theme');
75 if (!self::validName($name)) {
76 // TRANS: Server exception displayed if a theme name was invalid.
77 throw new ServerException(_('Invalid theme name.'));
81 // Check to see if it's in the local dir
83 $localroot = self::localRoot();
85 $fulldir = $localroot.'/'.$name;
87 if (file_exists($fulldir) && is_dir($fulldir)) {
88 $this->dir = $fulldir;
89 $this->path = $this->relativeThemePath('local', 'local', 'theme/' . $name);
93 // Check to see if it's in the distribution dir
95 $instroot = self::installRoot();
97 $fulldir = $instroot.'/'.$name;
99 if (file_exists($fulldir) && is_dir($fulldir)) {
100 $this->dir = $fulldir;
101 $this->path = $this->relativeThemePath('theme', 'theme', $name);
106 * Build a full URL to the given theme's base directory, possibly
107 * using an offsite theme server path.
109 * @param string $group configuration section name to pull paths from
110 * @param string $fallbackSubdir default subdirectory under INSTALLDIR
111 * @param string $name theme name
115 * @todo consolidate code with that for other customizable paths
117 protected function relativeThemePath($group, $fallbackSubdir, $name)
119 if (StatusNet::isHTTPS()) {
120 $sslserver = common_config($group, 'sslserver');
122 if (empty($sslserver)) {
123 if (is_string(common_config('site', 'sslserver')) &&
124 mb_strlen(common_config('site', 'sslserver')) > 0) {
125 $server = common_config('site', 'sslserver');
126 } else if (common_config('site', 'server')) {
127 $server = common_config('site', 'server');
129 $path = common_config('site', 'path') . '/';
130 if ($fallbackSubdir) {
131 $path .= $fallbackSubdir . '/';
134 $server = $sslserver;
135 $path = common_config($group, 'sslpath');
137 $path = common_config($group, 'path');
143 $path = common_config($group, 'path');
146 $path = common_config('site', 'path') . '/';
147 if ($fallbackSubdir) {
148 $path .= $fallbackSubdir . '/';
152 $server = common_config($group, 'server');
154 if (empty($server)) {
155 $server = common_config('site', 'server');
161 if ($path[strlen($path)-1] != '/') {
165 if ($path[0] != '/') {
169 return $protocol.'://'.$server.$path.$name;
173 * Gets the full local filename of a file in this theme.
175 * @param string $relative relative name, like 'logo.png'
177 * @return string full pathname, like /var/www/mublog/theme/default/logo.png
179 function getFile($relative)
181 return $this->dir.'/'.$relative;
185 * Gets the full HTTP url of a file in this theme
187 * @param string $relative relative name, like 'logo.png'
189 * @return string full URL, like 'http://example.com/theme/default/logo.png'
191 function getPath($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 if ($this->deps === null) {
206 $chain = $this->doGetDeps(array($this->name));
207 array_pop($chain); // Drop us back off
208 $this->deps = $chain;
213 protected function doGetDeps($chain)
215 $data = $this->getMetadata();
216 if (!empty($data['include'])) {
217 $include = $data['include'];
219 // Protect against cycles!
220 if (!in_array($include, $chain)) {
222 $theme = new Theme($include);
223 array_unshift($chain, $include);
224 return $theme->doGetDeps($chain);
225 } catch (Exception $e) {
227 "Exception while fetching theme dependencies " .
228 "for $this->name: " . $e->getMessage());
236 * Pull data from the theme's theme.ini file.
237 * @fixme calling getFile will fall back to default theme, this may be unsafe.
239 * @return associative array of strings
241 function getMetadata()
243 if ($this->metadata == null) {
244 $this->metadata = $this->doGetMetadata();
246 return $this->metadata;
250 * Pull data from the theme's theme.ini file.
251 * @fixme calling getFile will fall back to default theme, this may be unsafe.
253 * @return associative array of strings
255 private function doGetMetadata()
257 $iniFile = $this->getFile('theme.ini');
258 if (file_exists($iniFile)) {
259 return parse_ini_file($iniFile);
266 * Get list of any external URLs required by this theme and any
267 * dependencies. These are lazy-loaded from theme.ini.
269 * @return array of URL strings
271 function getExternals()
273 if ($this->externals == null) {
274 $data = $this->getMetadata();
275 if (!empty($data['external'])) {
276 $ext = (array)$data['external'];
281 if (!empty($data['include'])) {
282 $theme = new Theme($data['include']);
283 $ext = array_merge($ext, $theme->getExternals());
286 $this->externals = array_unique($ext);
288 return $this->externals;
292 * Gets the full path of a file in a theme dir based on its relative name
294 * @param string $relative relative path within the theme directory
295 * @param string $name name of the theme; defaults to current theme
297 * @return string File path to the theme file
299 static function file($relative, $name=null)
301 $theme = new Theme($name);
302 return $theme->getFile($relative);
306 * Gets the full URL of a file in a theme dir based on its relative name
308 * @param string $relative relative path within the theme directory
309 * @param string $name name of the theme; defaults to current theme
311 * @return string URL of the file
313 static function path($relative, $name=null)
315 $theme = new Theme($name);
316 return $theme->getPath($relative);
320 * list available theme names
322 * @return array list of available theme names
324 static function listAvailable()
326 $local = self::subdirsOf(self::localRoot());
327 $install = self::subdirsOf(self::installRoot());
329 $i = array_search('base', $install);
333 return array_merge($local, $install);
337 * Utility for getting subdirs of a directory
339 * @param string $dir full path to directory to check
341 * @return array relative filenames of subdirs, or empty array
343 protected static function subdirsOf($dir)
348 if ($dh = opendir($dir)) {
349 while (($filename = readdir($dh)) !== false) {
350 if ($filename != '..' && $filename !== '.' &&
351 is_dir($dir.'/'.$filename)) {
352 $subdirs[] = $filename;
363 * Local root dir for themes
365 * @return string local root dir for themes
367 protected static function localRoot()
369 $basedir = common_config('local', 'dir');
371 if (empty($basedir)) {
372 $basedir = INSTALLDIR . '/local';
375 return $basedir . '/theme';
379 * Root dir for themes that are shipped with StatusNet
381 * @return string root dir for StatusNet themes
383 protected static function installRoot()
385 $instroot = common_config('theme', 'dir');
387 if (empty($instroot)) {
388 $instroot = INSTALLDIR.'/theme';
394 static function validName($name)
396 return preg_match('/^[a-z0-9][a-z0-9_-]*$/i', $name);