root / drupal7 / sites / all / libraries / simplepie / library / SimplePie / Registry.php @ 41cc1b08
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<?php
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/**
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* SimplePie
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*
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* A PHP-Based RSS and Atom Feed Framework.
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* Takes the hard work out of managing a complete RSS/Atom solution.
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*
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* Copyright (c) 2004-2012, Ryan Parman, Geoffrey Sneddon, Ryan McCue, and contributors
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without modification, are
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* permitted provided that the following conditions are met:
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*
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* * Redistributions of source code must retain the above copyright notice, this list of
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* conditions and the following disclaimer.
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*
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* * Redistributions in binary form must reproduce the above copyright notice, this list
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* of conditions and the following disclaimer in the documentation and/or other materials
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* provided with the distribution.
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*
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* * Neither the name of the SimplePie Team nor the names of its contributors may be used
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* to endorse or promote products derived from this software without specific prior
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* written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS
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* OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY
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* AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDERS
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* AND CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
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* OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*
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* @package SimplePie
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* @version 1.3.1
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* @copyright 2004-2012 Ryan Parman, Geoffrey Sneddon, Ryan McCue
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* @author Ryan Parman
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* @author Geoffrey Sneddon
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* @author Ryan McCue
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* @link http://simplepie.org/ SimplePie
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* @license http://www.opensource.org/licenses/bsd-license.php BSD License
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*/
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/**
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* Handles creating objects and calling methods
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*
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* Access this via {@see SimplePie::get_registry()}
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*
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* @package SimplePie
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*/
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class SimplePie_Registry |
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{
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/**
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* Default class mapping
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*
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* Overriding classes *must* subclass these.
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*
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* @var array
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*/
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protected $default = array( |
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'Cache' => 'SimplePie_Cache', |
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'Locator' => 'SimplePie_Locator', |
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'Parser' => 'SimplePie_Parser', |
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'File' => 'SimplePie_File', |
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'Sanitize' => 'SimplePie_Sanitize', |
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'Item' => 'SimplePie_Item', |
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'Author' => 'SimplePie_Author', |
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'Category' => 'SimplePie_Category', |
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'Enclosure' => 'SimplePie_Enclosure', |
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'Caption' => 'SimplePie_Caption', |
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'Copyright' => 'SimplePie_Copyright', |
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'Credit' => 'SimplePie_Credit', |
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'Rating' => 'SimplePie_Rating', |
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'Restriction' => 'SimplePie_Restriction', |
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'Content_Type_Sniffer' => 'SimplePie_Content_Type_Sniffer', |
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'Source' => 'SimplePie_Source', |
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'Misc' => 'SimplePie_Misc', |
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'XML_Declaration_Parser' => 'SimplePie_XML_Declaration_Parser', |
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'Parse_Date' => 'SimplePie_Parse_Date', |
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); |
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/**
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* Class mapping
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*
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* @see register()
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* @var array
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*/
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protected $classes = array(); |
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/**
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* Legacy classes
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*
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* @see register()
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* @var array
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*/
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protected $legacy = array(); |
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/**
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* Constructor
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*
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* No-op
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*/
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public function __construct() { } |
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/**
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* Register a class
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*
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* @param string $type See {@see $default} for names
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* @param string $class Class name, must subclass the corresponding default
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* @param bool $legacy Whether to enable legacy support for this class
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* @return bool Successfulness
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*/
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public function register($type, $class, $legacy = false) |
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{
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if (!is_subclass_of($class, $this->default[$type])) |
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{
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return false; |
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} |
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$this->classes[$type] = $class; |
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if ($legacy) |
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{
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$this->legacy[] = $class; |
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} |
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return true; |
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} |
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/**
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* Get the class registered for a type
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*
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* Where possible, use {@see create()} or {@see call()} instead
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*
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* @param string $type
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* @return string|null
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*/
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public function get_class($type) |
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{
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if (!empty($this->classes[$type])) |
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{
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return $this->classes[$type]; |
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} |
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if (!empty($this->default[$type])) |
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{
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return $this->default[$type]; |
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} |
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return null; |
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} |
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/**
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* Create a new instance of a given type
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*
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* @param string $type
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* @param array $parameters Parameters to pass to the constructor
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* @return object Instance of class
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*/
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public function &create($type, $parameters = array()) |
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{
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$class = $this->get_class($type); |
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if (in_array($class, $this->legacy)) |
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{
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switch ($type) |
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{
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case 'locator': |
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// Legacy: file, timeout, useragent, file_class, max_checked_feeds, content_type_sniffer_class
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// Specified: file, timeout, useragent, max_checked_feeds
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$replacement = array($this->get_class('file'), $parameters[3], $this->get_class('content_type_sniffer')); |
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array_splice($parameters, 3, 1, $replacement); |
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break;
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} |
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} |
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if (!method_exists($class, '__construct')) |
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{
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$instance = new $class; |
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} |
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else
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{
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$reflector = new ReflectionClass($class); |
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$instance = $reflector->newInstanceArgs($parameters); |
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} |
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if (method_exists($instance, 'set_registry')) |
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{
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$instance->set_registry($this); |
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} |
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return $instance; |
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} |
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/**
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* Call a static method for a type
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*
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* @param string $type
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* @param string $method
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* @param array $parameters
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* @return mixed
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*/
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public function &call($type, $method, $parameters = array()) |
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{
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$class = $this->get_class($type); |
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if (in_array($class, $this->legacy)) |
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{
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switch ($type) |
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{
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case 'Cache': |
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// For backwards compatibility with old non-static
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// Cache::create() methods
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if ($method === 'get_handler') |
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{
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$result = @call_user_func_array(array($class, 'create'), $parameters); |
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return $result; |
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} |
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break;
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} |
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} |
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$result = call_user_func_array(array($class, $method), $parameters); |
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return $result; |
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} |
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} |