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<?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_Pubsubhubbub
* @copyright Copyright (c) 2005-2010 Zend Technologies USA Inc. (http://www.zend.com)
* @license http://framework.zend.com/license/new-bsd New BSD License
*/
/**
* @see Zend_Http_Client
*/
require_once 'Zend/Http/Client.php';
/**
* @see Zend_Uri
*/
require_once 'Zend/Uri.php';
/**
* @see Zend_Version
*/
require_once 'Zend/Version.php';
/**
* @see Zend_Feed_Reader
*/
require_once 'Zend/Feed/Reader.php';
/**
* @see Zend_Feed_Abstract
*/
require_once 'Zend/Feed/Abstract.php';
/**
* @category Zend
* @package Zend_Feed_Pubsubhubbub
* @copyright Copyright (c) 2005-2010 Zend Technologies USA Inc. (http://www.zend.com)
* @license http://framework.zend.com/license/new-bsd New BSD License
*/
class Zend_Feed_Pubsubhubbub
{
/**
* Verification Modes
*/
const VERIFICATION_MODE_SYNC = 'sync';
const VERIFICATION_MODE_ASYNC = 'async';
/**
* Subscription States
*/
const SUBSCRIPTION_VERIFIED = 'verified';
const SUBSCRIPTION_NOTVERIFIED = 'not_verified';
const SUBSCRIPTION_TODELETE = 'to_delete';
/**
* Singleton instance if required of the HTTP client
*
* @var Zend_Http_Client
*/
protected static $httpClient = null;
/**
* Simple utility function which imports any feed URL and
* determines the existence of Hub Server endpoints. This works
* best if directly given an instance of Zend_Feed_Reader_Atom|Rss
* to leverage off.
*
* @param Zend_Feed_Reader_FeedAbstract|Zend_Feed_Abstract|string $source
* @return array
*/
public static function detectHubs($source)
{
if (is_string($source)) {
$feed = Zend_Feed_Reader::import($source);
} elseif (is_object($source) && $source instanceof Zend_Feed_Reader_FeedAbstract) {
$feed = $source;
} elseif (is_object($source) && $source instanceof Zend_Feed_Abstract) {
$feed = Zend_Feed_Reader::importFeed($source);
} else {
require_once 'Zend/Feed/Pubsubhubbub/Exception.php';
throw new Zend_Feed_Pubsubhubbub_Exception('The source parameter was'
. ' invalid, i.e. not a URL string or an instance of type'
. ' Zend_Feed_Reader_FeedAbstract or Zend_Feed_Abstract');
}
return $feed->getHubs();
}
/**
* Allows the external environment to make Zend_Oauth use a specific
* Client instance.
*
* @param Zend_Http_Client $httpClient
* @return void
*/
public static function setHttpClient(Zend_Http_Client $httpClient)
{
self::$httpClient = $httpClient;
}
/**
* Return the singleton instance of the HTTP Client. Note that
* the instance is reset and cleared of previous parameters GET/POST.
* Headers are NOT reset but handled by this component if applicable.
*
* @return Zend_Http_Client
*/
public static function getHttpClient()
{
if (!isset(self::$httpClient)):
self::$httpClient = new Zend_Http_Client;
else:
self::$httpClient->resetParameters();
endif;
return self::$httpClient;
}
/**
* Simple mechanism to delete the entire singleton HTTP Client instance
* which forces an new instantiation for subsequent requests.
*
* @return void
*/
public static function clearHttpClient()
{
self::$httpClient = null;
}
/**
* RFC 3986 safe url encoding method
*
* @param string $string
* @return string
*/
public static function urlencode($string)
{
$rawencoded = rawurlencode($string);
$rfcencoded = str_replace('%7E', '~', $rawencoded);
return $rfcencoded;
}
}
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