93 lines
		
	
	
		
			3.3 KiB
		
	
	
	
		
			PHP
		
	
	
	
	
	
			
		
		
	
	
			93 lines
		
	
	
		
			3.3 KiB
		
	
	
	
		
			PHP
		
	
	
	
	
	
<?php
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/*
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 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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 * 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
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 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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 *
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 * This software consists of voluntary contributions made by many individuals
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 * and is licensed under the MIT license. For more information, see
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 * <http://www.doctrine-project.org>.
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 */
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namespace Doctrine\Common\Proxy;
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use Doctrine\Common\Proxy\Exception\InvalidArgumentException;
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/**
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 * Special Autoloader for Proxy classes, which are not PSR-0 compliant.
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 *
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 * @author Benjamin Eberlei <kontakt@beberlei.de>
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 */
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class Autoloader
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{
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    /**
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     * Resolves proxy class name to a filename based on the following pattern.
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     *
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     * 1. Remove Proxy namespace from class name.
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     * 2. Remove namespace separators from remaining class name.
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     * 3. Return PHP filename from proxy-dir with the result from 2.
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     *
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     * @param string $proxyDir
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     * @param string $proxyNamespace
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     * @param string $className
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     *
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     * @return string
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     *
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     * @throws InvalidArgumentException
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     */
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    public static function resolveFile($proxyDir, $proxyNamespace, $className)
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    {
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        if (0 !== strpos($className, $proxyNamespace)) {
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            throw InvalidArgumentException::notProxyClass($className, $proxyNamespace);
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        }
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        $className = str_replace('\\', '', substr($className, strlen($proxyNamespace) + 1));
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        return $proxyDir . DIRECTORY_SEPARATOR . $className . '.php';
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    }
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    /**
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     * Registers and returns autoloader callback for the given proxy dir and namespace.
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     *
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     * @param string        $proxyDir
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     * @param string        $proxyNamespace
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     * @param callable|null $notFoundCallback Invoked when the proxy file is not found.
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     *
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     * @return \Closure
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     *
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     * @throws InvalidArgumentException
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     */
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    public static function register($proxyDir, $proxyNamespace, $notFoundCallback = null)
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    {
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        $proxyNamespace = ltrim($proxyNamespace, '\\');
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        if ( ! (null === $notFoundCallback || is_callable($notFoundCallback))) {
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            throw InvalidArgumentException::invalidClassNotFoundCallback($notFoundCallback);
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        }
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        $autoloader = function ($className) use ($proxyDir, $proxyNamespace, $notFoundCallback) {
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            if (0 === strpos($className, $proxyNamespace)) {
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                $file = Autoloader::resolveFile($proxyDir, $proxyNamespace, $className);
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                if ($notFoundCallback && ! file_exists($file)) {
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                    call_user_func($notFoundCallback, $proxyDir, $proxyNamespace, $className);
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                }
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                require $file;
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            }
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        };
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        spl_autoload_register($autoloader);
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        return $autoloader;
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    }
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}
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