172 lines
4.5 KiB
PHP
172 lines
4.5 KiB
PHP
<?php
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namespace Symfony\Components\Routing\Loader;
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use Symfony\Components\Routing\RouteCollection;
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use Symfony\Components\Routing\Route;
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use Symfony\Components\Routing\FileResource;
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/*
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* This file is part of the symfony framework.
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*
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* (c) Fabien Potencier <fabien.potencier@symfony-project.com>
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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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/**
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* XmlFileLoader loads XML routing files.
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*
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* @package symfony
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* @subpackage routing
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* @author Fabien Potencier <fabien.potencier@symfony-project.com>
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*/
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class XmlFileLoader extends FileLoader
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{
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/**
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* Loads an XML file.
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*
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* @param string $file A XML file path
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*
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* @return RouteCollection A RouteCollection instance
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*/
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public function load($file)
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{
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$path = $this->findFile($file);
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$xml = $this->loadFile($path);
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$collection = new RouteCollection();
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$collection->addResource(new FileResource($path));
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// process routes and imports
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foreach ($xml->documentElement->childNodes as $node)
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{
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if (!$node instanceof \DOMElement)
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{
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continue;
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}
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switch ($node->tagName)
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{
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case 'route':
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$this->parseRoute($collection, $node, $path);
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break;
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case 'import':
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$this->parseImport($collection, $node, $path);
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break;
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default:
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throw new \InvalidArgumentException(sprintf('Unable to parse tag "%s"', $node->tagName));
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}
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}
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return $collection;
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}
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protected function parseRoute(RouteCollection $collection, $definition, $file)
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{
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$defaults = array();
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$requirements = array();
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$options = array();
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foreach ($definition->childNodes as $node)
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{
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if (!$node instanceof \DOMElement)
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{
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continue;
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}
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switch ($node->tagName)
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{
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case 'default':
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$defaults[(string) $node->getAttribute('key')] = trim((string) $node->nodeValue);
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break;
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case 'option':
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$options[(string) $node->getAttribute('key')] = trim((string) $node->nodeValue);
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break;
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case 'requirement':
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$requirements[(string) $node->getAttribute('key')] = trim((string) $node->nodeValue);
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break;
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default:
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throw new \InvalidArgumentException(sprintf('Unable to parse tag "%s"', $node->tagName));
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}
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}
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$route = new Route((string) $definition->getAttribute('pattern'), $defaults, $requirements, $options);
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$collection->addRoute((string) $definition->getAttribute('id'), $route);
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}
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protected function parseImport(RouteCollection $collection, $node, $file)
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{
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$class = null;
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if ($node->hasAttribute('class') && $import->getAttribute('class') !== get_class($this))
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{
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$class = (string) $node->getAttribute('class');
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}
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else
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{
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// try to detect loader with the extension
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switch (pathinfo((string) $node->getAttribute('resource'), PATHINFO_EXTENSION))
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{
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case 'yml':
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$class = 'Symfony\\Components\\Routing\\Loader\\YamlFileLoader';
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break;
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}
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}
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$loader = null === $class ? $this : new $class($this->paths);
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$importedFile = $this->getAbsolutePath((string) $node->getAttribute('resource'), dirname($file));
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$collection->addCollection($loader->load($importedFile), (string) $node->getAttribute('prefix'));
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}
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protected function loadFile($path)
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{
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$dom = new \DOMDocument();
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libxml_use_internal_errors(true);
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if (!$dom->load($path, LIBXML_COMPACT))
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{
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throw new \InvalidArgumentException(implode("\n", $this->getXmlErrors()));
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}
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$dom->validateOnParse = true;
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$dom->normalizeDocument();
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libxml_use_internal_errors(false);
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$this->validate($dom, $path);
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return $dom;
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}
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protected function validate($dom, $file)
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{
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libxml_use_internal_errors(true);
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if (!$dom->schemaValidate(__DIR__.'/schema/routing/routing-1.0.xsd'))
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{
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throw new \InvalidArgumentException(implode("\n", $this->getXmlErrors()));
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}
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libxml_use_internal_errors(false);
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}
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protected function getXmlErrors()
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{
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$errors = array();
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foreach (libxml_get_errors() as $error)
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{
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$errors[] = sprintf('[%s %s] %s (in %s - line %d, column %d)',
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LIBXML_ERR_WARNING == $error->level ? 'WARNING' : 'ERROR',
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$error->code,
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trim($error->message),
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$error->file ? $error->file : 'n/a',
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$error->line,
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$error->column
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);
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}
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libxml_clear_errors();
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return $errors;
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}
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}
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