Proyectos de Subversion Moodle

<?php

/**

 * SimplePie

 *

 * A PHP-Based RSS and Atom Feed Framework.

 * Takes the hard work out of managing a complete RSS/Atom solution.

 *

 * Copyright (c) 2004-2022, Ryan Parman, Sam Sneddon, Ryan McCue, and contributors

 * All rights reserved.

 *

 * Redistribution and use in source and binary forms, with or without modification, are

 * permitted provided that the following conditions are met:

 *

 * 	* Redistributions of source code must retain the above copyright notice, this list of

 * 	  conditions and the following disclaimer.

 *

 * 	* Redistributions in binary form must reproduce the above copyright notice, this list

 * 	  of conditions and the following disclaimer in the documentation and/or other materials

 * 	  provided with the distribution.

 *

 * 	* Neither the name of the SimplePie Team nor the names of its contributors may be used

 * 	  to endorse or promote products derived from this software without specific prior

 * 	  written permission.

 *

 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS

 * OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY

 * AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDERS

 * AND CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR

 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR

 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY

 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR

 * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE

 * POSSIBILITY OF SUCH DAMAGE.

 *

 * @package SimplePie

 * @copyright 2004-2016 Ryan Parman, Sam Sneddon, Ryan McCue

 * @author Ryan Parman

 * @author Sam Sneddon

 * @author Ryan McCue

 * @link http://simplepie.org/ SimplePie

 * @license http://www.opensource.org/licenses/bsd-license.php BSD License

 */

namespace SimplePie;

use SimplePie\Content\Type\Sniffer;

use SimplePie\Parse\Date;

use SimplePie\XML\Declaration\Parser as DeclarationParser;

/**

 * Handles creating objects and calling methods

 *

 * Access this via {@see \SimplePie\SimplePie::get_registry()}

 *

 * @package SimplePie

 */

class Registry

{

    /**

     * Default class mapping

     *

     * Overriding classes *must* subclass these.

     *

     * @var array<class-string, class-string>

     */

    protected $default = [

        Cache::class => Cache::class,

        Locator::class => Locator::class,

        Parser::class => Parser::class,

        File::class => File::class,

        Sanitize::class => Sanitize::class,

        Item::class => Item::class,

        Author::class => Author::class,

        Category::class => Category::class,

        Enclosure::class => Enclosure::class,

        Caption::class => Caption::class,

        Copyright::class => Copyright::class,

        Credit::class => Credit::class,

        Rating::class => Rating::class,

        Restriction::class => Restriction::class,

        Sniffer::class => Sniffer::class,

        Source::class => Source::class,

        Misc::class => Misc::class,

        DeclarationParser::class => DeclarationParser::class,

        Date::class => Date::class,

    ];

    /**

     * Class mapping

     *

     * @see register()

     * @var array

     */

    protected $classes = [];

    /**

     * Legacy classes

     *

     * @see register()

     * @var array<class-string>

     */

    protected $legacy = [];

    /**

     * Legacy types

     *

     * @see register()

     * @var array<string, class-string>

     */

    private $legacyTypes = [

        'Cache' => Cache::class,

        'Locator' => Locator::class,

        'Parser' => Parser::class,

        'File' => File::class,

        'Sanitize' => Sanitize::class,

        'Item' => Item::class,

        'Author' => Author::class,

        'Category' => Category::class,

        'Enclosure' => Enclosure::class,

        'Caption' => Caption::class,

        'Copyright' => Copyright::class,

        'Credit' => Credit::class,

        'Rating' => Rating::class,

        'Restriction' => Restriction::class,

        'Content_Type_Sniffer' => Sniffer::class,

        'Source' => Source::class,

        'Misc' => Misc::class,

        'XML_Declaration_Parser' => DeclarationParser::class,

        'Parse_Date' => Date::class,

    ];

    /**

     * Constructor

     *

     * No-op

     */

    public function __construct()

    {

    }

    /**

     * Register a class

     *

     * @param string $type See {@see $default} for names

     * @param class-string $class Class name, must subclass the corresponding default

     * @param bool $legacy Whether to enable legacy support for this class

     * @return bool Successfulness

     */

    public function register($type, $class, $legacy = false)

    {

        if (array_key_exists($type, $this->legacyTypes)) {

            // trigger_error(sprintf('"%s"(): Using argument #1 ($type) with value "%s" is deprecated since SimplePie 1.8.0, use class-string "%s" instead.', __METHOD__, $type, $this->legacyTypes[$type]), \E_USER_DEPRECATED);

            $type = $this->legacyTypes[$type];

        }

        if (!array_key_exists($type, $this->default)) {

            return false;

        }

        if (!class_exists($class)) {

            return false;

        }

        /** @var string */

        $base_class = $this->default[$type];

        if (!is_subclass_of($class, $base_class)) {

            return false;

        }

        $this->classes[$type] = $class;

        if ($legacy) {

            $this->legacy[] = $class;

        }

        return true;

    }

    /**

     * Get the class registered for a type

     *

     * Where possible, use {@see create()} or {@see call()} instead

     *

     * @template T

     * @param class-string<T> $type

     * @return class-string<T>|null

     */

    public function get_class($type)

    {

        if (array_key_exists($type, $this->legacyTypes)) {

            // trigger_error(sprintf('"%s"(): Using argument #1 ($type) with value "%s" is deprecated since SimplePie 1.8.0, use class-string "%s" instead.', __METHOD__, $type, $this->legacyTypes[$type]), \E_USER_DEPRECATED);

            $type = $this->legacyTypes[$type];

        }

        if (!array_key_exists($type, $this->default)) {

            return null;

        }

        $class = $this->default[$type];

        if (array_key_exists($type, $this->classes)) {

            $class = $this->classes[$type];

        }

        return $class;

    }

    /**

     * Create a new instance of a given type

     *

     * @template T class-string $type

     * @param class-string<T> $type

     * @param array $parameters Parameters to pass to the constructor

     * @return T Instance of class

     */

    public function &create($type, $parameters = [])

    {

        $class = $this->get_class($type);

        if (!method_exists($class, '__construct')) {

            $instance = new $class();

        } else {

            $reflector = new \ReflectionClass($class);

            $instance = $reflector->newInstanceArgs($parameters);

        }

        if ($instance instanceof RegistryAware) {

            $instance->set_registry($this);

        } elseif (method_exists($instance, 'set_registry')) {

            trigger_error(sprintf('Using the method "set_registry()" without implementing "%s" is deprecated since SimplePie 1.8.0, implement "%s" in "%s".', RegistryAware::class, RegistryAware::class, $class), \E_USER_DEPRECATED);

            $instance->set_registry($this);

        }

        return $instance;

    }

    /**

     * Call a static method for a type

     *

     * @param class-string $type

     * @param string $method

     * @param array $parameters

     * @return mixed

     */

    public function &call($type, $method, $parameters = [])

    {

        $class = $this->get_class($type);

        if (in_array($class, $this->legacy)) {

            switch ($type) {

                case Cache::class:

                    // For backwards compatibility with old non-static

                    // Cache::create() methods in PHP < 8.0.

                    // No longer supported as of PHP 8.0.

                    if ($method === 'get_handler') {

                        $result = @call_user_func_array([$class, 'create'], $parameters);

                        return $result;

                    }

                    break;

            }

        }

        $result = call_user_func_array([$class, $method], $parameters);

        return $result;

    }

}

class_alias('SimplePie\Registry', 'SimplePie_Registry');