3 * Zend Framework (http://framework.zend.com/)
5 * @link http://github.com/zendframework/zf2 for the canonical source repository
6 * @copyright Copyright (c) 2005-2015 Zend Technologies USA Inc. (http://www.zend.com)
7 * @license http://framework.zend.com/license/new-bsd New BSD License
10 namespace Zend\Feed\Writer;
19 const NAMESPACE_ATOM_03 = 'http://purl.org/atom/ns#';
20 const NAMESPACE_ATOM_10 = 'http://www.w3.org/2005/Atom';
21 const NAMESPACE_RDF = 'http://www.w3.org/1999/02/22-rdf-syntax-ns#';
22 const NAMESPACE_RSS_090 = 'http://my.netscape.com/rdf/simple/0.9/';
23 const NAMESPACE_RSS_10 = 'http://purl.org/rss/1.0/';
28 const TYPE_ANY = 'any';
29 const TYPE_ATOM_03 = 'atom-03';
30 const TYPE_ATOM_10 = 'atom-10';
31 const TYPE_ATOM_ANY = 'atom';
32 const TYPE_RSS_090 = 'rss-090';
33 const TYPE_RSS_091 = 'rss-091';
34 const TYPE_RSS_091_NETSCAPE = 'rss-091n';
35 const TYPE_RSS_091_USERLAND = 'rss-091u';
36 const TYPE_RSS_092 = 'rss-092';
37 const TYPE_RSS_093 = 'rss-093';
38 const TYPE_RSS_094 = 'rss-094';
39 const TYPE_RSS_10 = 'rss-10';
40 const TYPE_RSS_20 = 'rss-20';
41 const TYPE_RSS_ANY = 'rss';
44 * @var ExtensionManagerInterface
46 protected static $extensionManager = null;
49 * Array of registered extensions by class postfix (after the base class
50 * name) across four categories - data containers and renderers for entry
55 protected static $extensions = [
58 'entryRenderer' => [],
63 * Set plugin loader for use with Extensions
65 * @param ExtensionManagerInterface
67 public static function setExtensionManager(ExtensionManagerInterface $extensionManager)
69 static::$extensionManager = $extensionManager;
73 * Get plugin manager for use with Extensions
75 * @return ExtensionManagerInterface
77 public static function getExtensionManager()
79 if (! isset(static::$extensionManager)) {
80 static::setExtensionManager(new ExtensionManager());
82 return static::$extensionManager;
86 * Register an Extension by name
90 * @throws Exception\RuntimeException if unable to resolve Extension class
92 public static function registerExtension($name)
94 if (! static::hasExtension($name)) {
95 throw new Exception\RuntimeException(sprintf(
96 'Could not load extension "%s" using Plugin Loader.'
97 . ' Check prefix paths are configured and extension exists.',
102 if (static::isRegistered($name)) {
106 $manager = static::getExtensionManager();
108 $feedName = $name . '\Feed';
109 if ($manager->has($feedName)) {
110 static::$extensions['feed'][] = $feedName;
113 $entryName = $name . '\Entry';
114 if ($manager->has($entryName)) {
115 static::$extensions['entry'][] = $entryName;
118 $feedRendererName = $name . '\Renderer\Feed';
119 if ($manager->has($feedRendererName)) {
120 static::$extensions['feedRenderer'][] = $feedRendererName;
123 $entryRendererName = $name . '\Renderer\Entry';
124 if ($manager->has($entryRendererName)) {
125 static::$extensions['entryRenderer'][] = $entryRendererName;
130 * Is a given named Extension registered?
132 * @param string $extensionName
135 public static function isRegistered($extensionName)
137 $feedName = $extensionName . '\Feed';
138 $entryName = $extensionName . '\Entry';
139 $feedRendererName = $extensionName . '\Renderer\Feed';
140 $entryRendererName = $extensionName . '\Renderer\Entry';
141 if (in_array($feedName, static::$extensions['feed'])
142 || in_array($entryName, static::$extensions['entry'])
143 || in_array($feedRendererName, static::$extensions['feedRenderer'])
144 || in_array($entryRendererName, static::$extensions['entryRenderer'])
152 * Get a list of extensions
156 public static function getExtensions()
158 return static::$extensions;
162 * Reset class state to defaults
166 public static function reset()
168 static::$extensionManager = null;
169 static::$extensions = [
172 'entryRenderer' => [],
173 'feedRenderer' => [],
178 * Register core (default) extensions
182 public static function registerCoreExtensions()
184 static::registerExtension('DublinCore');
185 static::registerExtension('Content');
186 static::registerExtension('Atom');
187 static::registerExtension('Slash');
188 static::registerExtension('WellFormedWeb');
189 static::registerExtension('Threading');
190 static::registerExtension('ITunes');
192 // Added in 2.10.0; check for it conditionally
193 static::hasExtension('GooglePlayPodcast')
194 ? static::registerExtension('GooglePlayPodcast')
197 'Please update your %1$s\ExtensionManagerInterface implementation to add entries for'
198 . ' %1$s\Extension\GooglePlayPodcast\Entry,'
199 . ' %1$s\Extension\GooglePlayPodcast\Feed,'
200 . ' %1$s\Extension\GooglePlayPodcast\Renderer\Entry,'
201 . ' and %1$s\Extension\GooglePlayPodcast\Renderer\Feed.',
208 public static function lcfirst($str)
210 $str[0] = strtolower($str[0]);
215 * Does the extension manager have the named extension?
217 * This method exists to allow us to test if an extension is present in the
218 * extension manager. It may be used by registerExtension() to determine if
219 * the extension has items present in the manager, or by
220 * registerCoreExtension() to determine if the core extension has entries
221 * in the extension manager. In the latter case, this can be useful when
222 * adding new extensions in a minor release, as custom extension manager
223 * implementations may not yet have an entry for the extension, which would
224 * then otherwise cause registerExtension() to fail.
226 * @param string $name
229 protected static function hasExtension($name)
231 $manager = static::getExtensionManager();
233 $feedName = $name . '\Feed';
234 $entryName = $name . '\Entry';
235 $feedRendererName = $name . '\Renderer\Feed';
236 $entryRendererName = $name . '\Renderer\Entry';
238 return $manager->has($feedName)
239 || $manager->has($entryName)
240 || $manager->has($feedRendererName)
241 || $manager->has($entryRendererName);