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<?php
/**
* Zend Framework (http://framework.zend.com/)
*
* @link http://github.com/zendframework/zf2 for the canonical source repository
* @copyright Copyright (c) 2005-2015 Zend Technologies USA Inc. (http://www.zend.com)
* @license http://framework.zend.com/license/new-bsd New BSD License
*/
namespace Zend\Feed\Writer;
/**
*/
class Writer
{
/**
* Namespace constants
*/
const NAMESPACE_ATOM_03 = 'http://purl.org/atom/ns#';
const NAMESPACE_ATOM_10 = 'http://www.w3.org/2005/Atom';
const NAMESPACE_RDF = 'http://www.w3.org/1999/02/22-rdf-syntax-ns#';
const NAMESPACE_RSS_090 = 'http://my.netscape.com/rdf/simple/0.9/';
const NAMESPACE_RSS_10 = 'http://purl.org/rss/1.0/';
/**
* Feed type constants
*/
const TYPE_ANY = 'any';
const TYPE_ATOM_03 = 'atom-03';
const TYPE_ATOM_10 = 'atom-10';
const TYPE_ATOM_ANY = 'atom';
const TYPE_RSS_090 = 'rss-090';
const TYPE_RSS_091 = 'rss-091';
const TYPE_RSS_091_NETSCAPE = 'rss-091n';
const TYPE_RSS_091_USERLAND = 'rss-091u';
const TYPE_RSS_092 = 'rss-092';
const TYPE_RSS_093 = 'rss-093';
const TYPE_RSS_094 = 'rss-094';
const TYPE_RSS_10 = 'rss-10';
const TYPE_RSS_20 = 'rss-20';
const TYPE_RSS_ANY = 'rss';
/**
* @var ExtensionManagerInterface
*/
protected static $extensionManager = null;
/**
* Array of registered extensions by class postfix (after the base class
* name) across four categories - data containers and renderers for entry
* and feed levels.
*
* @var array
*/
protected static $extensions = array(
'entry' => array(),
'feed' => array(),
'entryRenderer' => array(),
'feedRenderer' => array(),
);
/**
* Set plugin loader for use with Extensions
*
* @param ExtensionManagerInterface
*/
public static function setExtensionManager(ExtensionManagerInterface $extensionManager)
{
static::$extensionManager = $extensionManager;
}
/**
* Get plugin manager for use with Extensions
*
* @return ExtensionManagerInterface
*/
public static function getExtensionManager()
{
if (!isset(static::$extensionManager)) {
static::setExtensionManager(new ExtensionManager());
}
return static::$extensionManager;
}
/**
* Register an Extension by name
*
* @param string $name
* @return void
* @throws Exception\RuntimeException if unable to resolve Extension class
*/
public static function registerExtension($name)
{
$feedName = $name . '\Feed';
$entryName = $name . '\Entry';
$feedRendererName = $name . '\Renderer\Feed';
$entryRendererName = $name . '\Renderer\Entry';
$manager = static::getExtensionManager();
if (static::isRegistered($name)) {
if ($manager->has($feedName)
|| $manager->has($entryName)
|| $manager->has($feedRendererName)
|| $manager->has($entryRendererName)
) {
return;
}
}
if (!$manager->has($feedName)
&& !$manager->has($entryName)
&& !$manager->has($feedRendererName)
&& !$manager->has($entryRendererName)
) {
throw new Exception\RuntimeException('Could not load extension: ' . $name
. 'using Plugin Loader. Check prefix paths are configured and extension exists.');
}
if ($manager->has($feedName)) {
static::$extensions['feed'][] = $feedName;
}
if ($manager->has($entryName)) {
static::$extensions['entry'][] = $entryName;
}
if ($manager->has($feedRendererName)) {
static::$extensions['feedRenderer'][] = $feedRendererName;
}
if ($manager->has($entryRendererName)) {
static::$extensions['entryRenderer'][] = $entryRendererName;
}
}
/**
* Is a given named Extension registered?
*
* @param string $extensionName
* @return bool
*/
public static function isRegistered($extensionName)
{
$feedName = $extensionName . '\Feed';
$entryName = $extensionName . '\Entry';
$feedRendererName = $extensionName . '\Renderer\Feed';
$entryRendererName = $extensionName . '\Renderer\Entry';
if (in_array($feedName, static::$extensions['feed'])
|| in_array($entryName, static::$extensions['entry'])
|| in_array($feedRendererName, static::$extensions['feedRenderer'])
|| in_array($entryRendererName, static::$extensions['entryRenderer'])
) {
return true;
}
return false;
}
/**
* Get a list of extensions
*
* @return array
*/
public static function getExtensions()
{
return static::$extensions;
}
/**
* Reset class state to defaults
*
* @return void
*/
public static function reset()
{
static::$extensionManager = null;
static::$extensions = array(
'entry' => array(),
'feed' => array(),
'entryRenderer' => array(),
'feedRenderer' => array(),
);
}
/**
* Register core (default) extensions
*
* @return void
*/
public static function registerCoreExtensions()
{
static::registerExtension('DublinCore');
static::registerExtension('Content');
static::registerExtension('Atom');
static::registerExtension('Slash');
static::registerExtension('WellFormedWeb');
static::registerExtension('Threading');
static::registerExtension('ITunes');
}
public static function lcfirst($str)
{
$str[0] = strtolower($str[0]);
return $str;
}
}