<?php
/**
* Zend Framework
*
* LICENSE
*
* This source file is subject to the new BSD license that is bundled
* with this package in the file LICENSE.txt.
* It is also available through the world-wide-web at this URL:
* http://framework.zend.com/license/new-bsd
* If you did not receive a copy of the license and are unable to
* obtain it through the world-wide-web, please send an email
* to license@zend.com so we can send you a copy immediately.
*
* @category Zend
* @package Zend_Feed_Writer
* @copyright Copyright (c) 2005-2014 Zend Technologies USA Inc. (http://www.zend.com)
* @license http://framework.zend.com/license/new-bsd New BSD License
* @version $Id$
*/
/**
* @category Zend
* @package Zend_Feed_Writer
* @copyright Copyright (c) 2005-2014 Zend Technologies USA Inc. (http://www.zend.com)
* @license http://framework.zend.com/license/new-bsd New BSD License
*/
class Zend_Feed_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';
/**
* PluginLoader instance used by component
*
* @var Zend_Loader_PluginLoader_Interface
*/
protected static $_pluginLoader = null;
/**
* Path on which to search for Extension classes
*
* @var array
*/
protected static $_prefixPaths = array();
/**
* 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 Zend_Loader_PluginLoader_Interface
*/
public static function setPluginLoader(Zend_Loader_PluginLoader_Interface $loader)
{
self::$_pluginLoader = $loader;
}
/**
* Get plugin loader for use with Extensions
*
* @return Zend_Loader_PluginLoader_Interface
*/
public static function getPluginLoader()
{
if (!isset(self::$_pluginLoader)) {
require_once 'Zend/Loader/PluginLoader.php';
self::$_pluginLoader = new Zend_Loader_PluginLoader(array(
'Zend_Feed_Writer_Extension_' => 'Zend/Feed/Writer/Extension/',
));
}
return self::$_pluginLoader;
}
/**
* Add prefix path for loading Extensions
*
* @param string $prefix
* @param string $path
* @return void
*/
public static function addPrefixPath($prefix, $path)
{
$prefix = rtrim($prefix, '_');
$path = rtrim($path, DIRECTORY_SEPARATOR);
self::getPluginLoader()->addPrefixPath($prefix, $path);
}
/**
* Add multiple Extension prefix paths at once
*
* @param array $spec
* @return void
*/
public static function addPrefixPaths(array $spec)
{
if (isset($spec['prefix']) && isset($spec['path'])) {
self::addPrefixPath($spec['prefix'], $spec['path']);
}
foreach ($spec as $prefixPath) {
if (isset($prefixPath['prefix']) && isset($prefixPath['path'])) {
self::addPrefixPath($prefixPath['prefix'], $prefixPath['path']);
}
}
}
/**
* Register an Extension by name
*
* @param string $name
* @return void
* @throws Zend_Feed_Exception if unable to resolve Extension class
*/
public static function registerExtension($name)
{
$feedName = $name . '_Feed';
$entryName = $name . '_Entry';
$feedRendererName = $name . '_Renderer_Feed';
$entryRendererName = $name . '_Renderer_Entry';
if (self::isRegistered($name)) {
if (self::getPluginLoader()->isLoaded($feedName)
|| self::getPluginLoader()->isLoaded($entryName)
|| self::getPluginLoader()->isLoaded($feedRendererName)
|| self::getPluginLoader()->isLoaded($entryRendererName)
) {
return;
}
}
try {
self::getPluginLoader()->load($feedName);
self::$_extensions['feed'][] = $feedName;
} catch (Zend_Loader_PluginLoader_Exception $e) {
}
try {
self::getPluginLoader()->load($entryName);
self::$_extensions['entry'][] = $entryName;
} catch (Zend_Loader_PluginLoader_Exception $e) {
}
try {
self::getPluginLoader()->load($feedRendererName);
self::$_extensions['feedRenderer'][] = $feedRendererName;
} catch (Zend_Loader_PluginLoader_Exception $e) {
}
try {
self::getPluginLoader()->load($entryRendererName);
self::$_extensions['entryRenderer'][] = $entryRendererName;
} catch (Zend_Loader_PluginLoader_Exception $e) {
}
if (!self::getPluginLoader()->isLoaded($feedName)
&& !self::getPluginLoader()->isLoaded($entryName)
&& !self::getPluginLoader()->isLoaded($feedRendererName)
&& !self::getPluginLoader()->isLoaded($entryRendererName)
) {
require_once 'Zend/Feed/Exception.php';
throw new Zend_Feed_Exception('Could not load extension: ' . $name
. 'using Plugin Loader. Check prefix paths are configured and extension exists.');
}
}
/**
* Is a given named Extension registered?
*
* @param string $extensionName
* @return boolean
*/
public static function isRegistered($extensionName)
{
$feedName = $extensionName . '_Feed';
$entryName = $extensionName . '_Entry';
$feedRendererName = $extensionName . '_Renderer_Feed';
$entryRendererName = $extensionName . '_Renderer_Entry';
if (in_array($feedName, self::$_extensions['feed'])
|| in_array($entryName, self::$_extensions['entry'])
|| in_array($feedRendererName, self::$_extensions['feedRenderer'])
|| in_array($entryRendererName, self::$_extensions['entryRenderer'])
) {
return true;
}
return false;
}
/**
* Get a list of extensions
*
* @return array
*/
public static function getExtensions()
{
return self::$_extensions;
}
/**
* Reset class state to defaults
*
* @return void
*/
public static function reset()
{
self::$_pluginLoader = null;
self::$_prefixPaths = array();
self::$_extensions = array(
'entry' => array(),
'feed' => array(),
'entryRenderer' => array(),
'feedRenderer' => array(),
);
}
/**
* Register core (default) extensions
*
* @return void
*/
public static function registerCoreExtensions()
{
self::registerExtension('DublinCore');
self::registerExtension('Content');
self::registerExtension('Atom');
self::registerExtension('Slash');
self::registerExtension('WellFormedWeb');
self::registerExtension('Threading');
self::registerExtension('ITunes');
}
public static function lcfirst($str)
{
$str[0] = strtolower($str[0]);
return $str;
}
}