123 lines
3.5 KiB
PHP
123 lines
3.5 KiB
PHP
<?php
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/*
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* This file is part of the WebServiceBundle.
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*
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* (c) Christian Kerl <christian-kerl@web.de>
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*
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* This source file is subject to the MIT license that is bundled
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* with this source code in the file LICENSE.
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*/
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namespace Bundle\WebServiceBundle\ServiceDefinition\Loader;
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use Bundle\WebServiceBundle\ServiceDefinition\ServiceDefinition;
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use Symfony\Component\Config\FileLocator;
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use Symfony\Component\Config\Loader\FileLoader;
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use Symfony\Component\Config\Resource\FileResource;
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/**
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* AnnotationFileLoader loads ServiceDefinition from annotations set
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* on a PHP class and its methods.
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*
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* Based on \Symfony\Component\Routing\Loader\AnnotationFileLoader
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*
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* @author Christian Kerl <christian-kerl@web.de>
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*/
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class AnnotationFileLoader extends FileLoader
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{
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protected $loader;
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/**
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* Constructor.
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*
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* @param AnnotationClassLoader $loader An AnnotationClassLoader instance
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* @param string|array $paths A path or an array of paths where to look for resources
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*/
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public function __construct(FileLocator $locator, AnnotationClassLoader $loader, $paths = array())
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{
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if (!function_exists('token_get_all')) {
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throw new \RuntimeException('The Tokenizer extension is required for the routing annotation loaders.');
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}
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parent::__construct($locator, $paths);
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$this->loader = $loader;
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}
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/**
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* Loads from annotations from a file.
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*
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* @param string $file A PHP file path
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* @param string $type The resource type
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*
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* @return ServiceDefinition A ServiceDefinition instance
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*
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* @throws \InvalidArgumentException When the file does not exist
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*/
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public function load($file, $type = null)
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{
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$path = $this->locator->locate($file);
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if ($class = $this->findClass($path)) {
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return $definition = $this->loader->load($class, $type);
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}
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return null;
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}
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/**
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* Returns true if this class supports the given resource.
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*
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* @param mixed $resource A resource
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* @param string $type The resource type
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*
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* @return Boolean True if this class supports the given resource, false otherwise
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*/
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public function supports($resource, $type = null)
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{
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return is_string($resource) && 'php' === pathinfo($resource, PATHINFO_EXTENSION) && (!$type || 'annotation' === $type);
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}
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/**
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* Returns the full class name for the first class in the file.
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*
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* @param string $file A PHP file path
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*
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* @return string|false Full class name if found, false otherwise
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*/
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protected function findClass($file)
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{
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$class = false;
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$namespace = false;
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$tokens = token_get_all(file_get_contents($file));
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while ($token = array_shift($tokens)) {
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if (!is_array($token)) {
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continue;
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}
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if (true === $class && T_STRING === $token[0]) {
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return $namespace.'\\'.$token[1];
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}
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if (true === $namespace && T_STRING === $token[0]) {
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$namespace = '';
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do {
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$namespace .= $token[1];
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$token = array_shift($tokens);
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} while ($tokens && is_array($token) && in_array($token[0], array(T_NS_SEPARATOR, T_STRING)));
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}
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if (T_CLASS === $token[0]) {
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$class = true;
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}
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if (T_NAMESPACE === $token[0]) {
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$namespace = true;
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}
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}
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return false;
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}
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}
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