--- /dev/null
+<?php
+
+/*
+ * This file is part of the Symfony package.
+ *
+ * (c) Fabien Potencier <fabien@symfony.com>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace Symfony\Component\DependencyInjection\Loader;
+
+use Symfony\Component\Config\Resource\FileResource;
+use Symfony\Component\Config\Util\XmlUtils;
+use Symfony\Component\DependencyInjection\DefinitionDecorator;
+use Symfony\Component\DependencyInjection\ContainerInterface;
+use Symfony\Component\DependencyInjection\Alias;
+use Symfony\Component\DependencyInjection\Definition;
+use Symfony\Component\DependencyInjection\Reference;
+use Symfony\Component\DependencyInjection\Exception\InvalidArgumentException;
+use Symfony\Component\DependencyInjection\Exception\RuntimeException;
+use Symfony\Component\ExpressionLanguage\Expression;
+
+/**
+ * XmlFileLoader loads XML files service definitions.
+ *
+ * @author Fabien Potencier <fabien@symfony.com>
+ */
+class XmlFileLoader extends FileLoader
+{
+ const NS = 'http://symfony.com/schema/dic/services';
+
+ /**
+ * {@inheritdoc}
+ */
+ public function load($resource, $type = null)
+ {
+ $path = $this->locator->locate($resource);
+
+ $xml = $this->parseFileToDOM($path);
+
+ $this->container->addResource(new FileResource($path));
+
+ // anonymous services
+ $this->processAnonymousServices($xml, $path);
+
+ // imports
+ $this->parseImports($xml, $path);
+
+ // parameters
+ $this->parseParameters($xml);
+
+ // extensions
+ $this->loadFromExtensions($xml);
+
+ // services
+ $this->parseDefinitions($xml, $path);
+ }
+
+ /**
+ * {@inheritdoc}
+ */
+ public function supports($resource, $type = null)
+ {
+ return is_string($resource) && 'xml' === pathinfo($resource, PATHINFO_EXTENSION);
+ }
+
+ /**
+ * Parses parameters.
+ *
+ * @param \DOMDocument $xml
+ */
+ private function parseParameters(\DOMDocument $xml)
+ {
+ if ($parameters = $this->getChildren($xml->documentElement, 'parameters')) {
+ $this->container->getParameterBag()->add($this->getArgumentsAsPhp($parameters[0], 'parameter'));
+ }
+ }
+
+ /**
+ * Parses imports.
+ *
+ * @param \DOMDocument $xml
+ * @param string $file
+ */
+ private function parseImports(\DOMDocument $xml, $file)
+ {
+ $xpath = new \DOMXPath($xml);
+ $xpath->registerNamespace('container', self::NS);
+
+ if (false === $imports = $xpath->query('//container:imports/container:import')) {
+ return;
+ }
+
+ $defaultDirectory = dirname($file);
+ foreach ($imports as $import) {
+ $this->setCurrentDir($defaultDirectory);
+ $this->import($import->getAttribute('resource'), null, (bool) XmlUtils::phpize($import->getAttribute('ignore-errors')), $file);
+ }
+ }
+
+ /**
+ * Parses multiple definitions.
+ *
+ * @param \DOMDocument $xml
+ * @param string $file
+ */
+ private function parseDefinitions(\DOMDocument $xml, $file)
+ {
+ $xpath = new \DOMXPath($xml);
+ $xpath->registerNamespace('container', self::NS);
+
+ if (false === $services = $xpath->query('//container:services/container:service')) {
+ return;
+ }
+
+ foreach ($services as $service) {
+ if (null !== $definition = $this->parseDefinition($service, $file)) {
+ $this->container->setDefinition((string) $service->getAttribute('id'), $definition);
+ }
+ }
+ }
+
+ /**
+ * Parses an individual Definition.
+ *
+ * @param \DOMElement $service
+ * @param string $file
+ *
+ * @return Definition|null
+ */
+ private function parseDefinition(\DOMElement $service, $file)
+ {
+ if ($alias = $service->getAttribute('alias')) {
+ $public = true;
+ if ($publicAttr = $service->getAttribute('public')) {
+ $public = XmlUtils::phpize($publicAttr);
+ }
+ $this->container->setAlias((string) $service->getAttribute('id'), new Alias($alias, $public));
+
+ return;
+ }
+
+ if ($parent = $service->getAttribute('parent')) {
+ $definition = new DefinitionDecorator($parent);
+ } else {
+ $definition = new Definition();
+ }
+
+ foreach (array('class', 'shared', 'public', 'factory-class', 'factory-method', 'factory-service', 'synthetic', 'lazy', 'abstract') as $key) {
+ if ($value = $service->getAttribute($key)) {
+ if (in_array($key, array('factory-class', 'factory-method', 'factory-service'))) {
+ @trigger_error(sprintf('The "%s" attribute of service "%s" in file "%s" is deprecated since version 2.6 and will be removed in 3.0. Use the "factory" element instead.', $key, (string) $service->getAttribute('id'), $file), E_USER_DEPRECATED);
+ }
+ $method = 'set'.str_replace('-', '', $key);
+ $definition->$method(XmlUtils::phpize($value));
+ }
+ }
+
+ if ($value = $service->getAttribute('autowire')) {
+ $definition->setAutowired(XmlUtils::phpize($value));
+ }
+
+ if ($value = $service->getAttribute('scope')) {
+ $triggerDeprecation = 'request' !== (string) $service->getAttribute('id');
+
+ if ($triggerDeprecation) {
+ @trigger_error(sprintf('The "scope" attribute of service "%s" in file "%s" is deprecated since version 2.8 and will be removed in 3.0.', (string) $service->getAttribute('id'), $file), E_USER_DEPRECATED);
+ }
+
+ $definition->setScope(XmlUtils::phpize($value), false);
+ }
+
+ if ($value = $service->getAttribute('synchronized')) {
+ $triggerDeprecation = 'request' !== (string) $service->getAttribute('id');
+
+ if ($triggerDeprecation) {
+ @trigger_error(sprintf('The "synchronized" attribute of service "%s" in file "%s" is deprecated since version 2.7 and will be removed in 3.0.', (string) $service->getAttribute('id'), $file), E_USER_DEPRECATED);
+ }
+
+ $definition->setSynchronized(XmlUtils::phpize($value), $triggerDeprecation);
+ }
+
+ if ($files = $this->getChildren($service, 'file')) {
+ $definition->setFile($files[0]->nodeValue);
+ }
+
+ if ($deprecated = $this->getChildren($service, 'deprecated')) {
+ $definition->setDeprecated(true, $deprecated[0]->nodeValue ?: null);
+ }
+
+ $definition->setArguments($this->getArgumentsAsPhp($service, 'argument'));
+ $definition->setProperties($this->getArgumentsAsPhp($service, 'property'));
+
+ if ($factories = $this->getChildren($service, 'factory')) {
+ $factory = $factories[0];
+ if ($function = $factory->getAttribute('function')) {
+ $definition->setFactory($function);
+ } else {
+ $factoryService = $this->getChildren($factory, 'service');
+
+ if (isset($factoryService[0])) {
+ $class = $this->parseDefinition($factoryService[0], $file);
+ } elseif ($childService = $factory->getAttribute('service')) {
+ $class = new Reference($childService, ContainerInterface::EXCEPTION_ON_INVALID_REFERENCE, false);
+ } else {
+ $class = $factory->getAttribute('class');
+ }
+
+ $definition->setFactory(array($class, $factory->getAttribute('method')));
+ }
+ }
+
+ if ($configurators = $this->getChildren($service, 'configurator')) {
+ $configurator = $configurators[0];
+ if ($function = $configurator->getAttribute('function')) {
+ $definition->setConfigurator($function);
+ } else {
+ $configuratorService = $this->getChildren($configurator, 'service');
+
+ if (isset($configuratorService[0])) {
+ $class = $this->parseDefinition($configuratorService[0], $file);
+ } elseif ($childService = $configurator->getAttribute('service')) {
+ $class = new Reference($childService, ContainerInterface::EXCEPTION_ON_INVALID_REFERENCE, false);
+ } else {
+ $class = $configurator->getAttribute('class');
+ }
+
+ $definition->setConfigurator(array($class, $configurator->getAttribute('method')));
+ }
+ }
+
+ foreach ($this->getChildren($service, 'call') as $call) {
+ $definition->addMethodCall($call->getAttribute('method'), $this->getArgumentsAsPhp($call, 'argument'));
+ }
+
+ foreach ($this->getChildren($service, 'tag') as $tag) {
+ $parameters = array();
+ foreach ($tag->attributes as $name => $node) {
+ if ('name' === $name) {
+ continue;
+ }
+
+ if (false !== strpos($name, '-') && false === strpos($name, '_') && !array_key_exists($normalizedName = str_replace('-', '_', $name), $parameters)) {
+ $parameters[$normalizedName] = XmlUtils::phpize($node->nodeValue);
+ }
+ // keep not normalized key for BC too
+ $parameters[$name] = XmlUtils::phpize($node->nodeValue);
+ }
+
+ if ('' === $tag->getAttribute('name')) {
+ throw new InvalidArgumentException(sprintf('The tag name for service "%s" in %s must be a non-empty string.', (string) $service->getAttribute('id'), $file));
+ }
+
+ $definition->addTag($tag->getAttribute('name'), $parameters);
+ }
+
+ foreach ($this->getChildren($service, 'autowiring-type') as $type) {
+ $definition->addAutowiringType($type->textContent);
+ }
+
+ if ($value = $service->getAttribute('decorates')) {
+ $renameId = $service->hasAttribute('decoration-inner-name') ? $service->getAttribute('decoration-inner-name') : null;
+ $priority = $service->hasAttribute('decoration-priority') ? $service->getAttribute('decoration-priority') : 0;
+ $definition->setDecoratedService($value, $renameId, $priority);
+ }
+
+ return $definition;
+ }
+
+ /**
+ * Parses a XML file to a \DOMDocument.
+ *
+ * @param string $file Path to a file
+ *
+ * @return \DOMDocument
+ *
+ * @throws InvalidArgumentException When loading of XML file returns error
+ */
+ private function parseFileToDOM($file)
+ {
+ try {
+ $dom = XmlUtils::loadFile($file, array($this, 'validateSchema'));
+ } catch (\InvalidArgumentException $e) {
+ throw new InvalidArgumentException(sprintf('Unable to parse file "%s".', $file), $e->getCode(), $e);
+ }
+
+ $this->validateExtensions($dom, $file);
+
+ return $dom;
+ }
+
+ /**
+ * Processes anonymous services.
+ *
+ * @param \DOMDocument $xml
+ * @param string $file
+ */
+ private function processAnonymousServices(\DOMDocument $xml, $file)
+ {
+ $definitions = array();
+ $count = 0;
+
+ $xpath = new \DOMXPath($xml);
+ $xpath->registerNamespace('container', self::NS);
+
+ // anonymous services as arguments/properties
+ if (false !== $nodes = $xpath->query('//container:argument[@type="service"][not(@id)]|//container:property[@type="service"][not(@id)]')) {
+ foreach ($nodes as $node) {
+ // give it a unique name
+ $id = sprintf('%s_%d', hash('sha256', $file), ++$count);
+ $node->setAttribute('id', $id);
+
+ if ($services = $this->getChildren($node, 'service')) {
+ $definitions[$id] = array($services[0], $file, false);
+ $services[0]->setAttribute('id', $id);
+
+ // anonymous services are always private
+ // we could not use the constant false here, because of XML parsing
+ $services[0]->setAttribute('public', 'false');
+ }
+ }
+ }
+
+ // anonymous services "in the wild"
+ if (false !== $nodes = $xpath->query('//container:services/container:service[not(@id)]')) {
+ foreach ($nodes as $node) {
+ // give it a unique name
+ $id = sprintf('%s_%d', hash('sha256', $file), ++$count);
+ $node->setAttribute('id', $id);
+ $definitions[$id] = array($node, $file, true);
+ }
+ }
+
+ // resolve definitions
+ krsort($definitions);
+ foreach ($definitions as $id => $def) {
+ list($domElement, $file, $wild) = $def;
+
+ if (null !== $definition = $this->parseDefinition($domElement, $file)) {
+ $this->container->setDefinition($id, $definition);
+ }
+
+ if (true === $wild) {
+ $tmpDomElement = new \DOMElement('_services', null, self::NS);
+ $domElement->parentNode->replaceChild($tmpDomElement, $domElement);
+ $tmpDomElement->setAttribute('id', $id);
+ } else {
+ $domElement->parentNode->removeChild($domElement);
+ }
+ }
+ }
+
+ /**
+ * Returns arguments as valid php types.
+ *
+ * @param \DOMElement $node
+ * @param string $name
+ * @param bool $lowercase
+ *
+ * @return mixed
+ */
+ private function getArgumentsAsPhp(\DOMElement $node, $name, $lowercase = true)
+ {
+ $arguments = array();
+ foreach ($this->getChildren($node, $name) as $arg) {
+ if ($arg->hasAttribute('name')) {
+ $arg->setAttribute('key', $arg->getAttribute('name'));
+ }
+
+ // this is used by DefinitionDecorator to overwrite a specific
+ // argument of the parent definition
+ if ($arg->hasAttribute('index')) {
+ $key = 'index_'.$arg->getAttribute('index');
+ } elseif (!$arg->hasAttribute('key')) {
+ // Append an empty argument, then fetch its key to overwrite it later
+ $arguments[] = null;
+ $keys = array_keys($arguments);
+ $key = array_pop($keys);
+ } else {
+ $key = $arg->getAttribute('key');
+
+ // parameter keys are case insensitive
+ if ('parameter' == $name && $lowercase) {
+ $key = strtolower($key);
+ }
+ }
+
+ switch ($arg->getAttribute('type')) {
+ case 'service':
+ $onInvalid = $arg->getAttribute('on-invalid');
+ $invalidBehavior = ContainerInterface::EXCEPTION_ON_INVALID_REFERENCE;
+ if ('ignore' == $onInvalid) {
+ $invalidBehavior = ContainerInterface::IGNORE_ON_INVALID_REFERENCE;
+ } elseif ('null' == $onInvalid) {
+ $invalidBehavior = ContainerInterface::NULL_ON_INVALID_REFERENCE;
+ }
+
+ if ($strict = $arg->getAttribute('strict')) {
+ $strict = XmlUtils::phpize($strict);
+ } else {
+ $strict = true;
+ }
+
+ $arguments[$key] = new Reference($arg->getAttribute('id'), $invalidBehavior, $strict);
+ break;
+ case 'expression':
+ $arguments[$key] = new Expression($arg->nodeValue);
+ break;
+ case 'collection':
+ $arguments[$key] = $this->getArgumentsAsPhp($arg, $name, false);
+ break;
+ case 'string':
+ $arguments[$key] = $arg->nodeValue;
+ break;
+ case 'constant':
+ $arguments[$key] = constant(trim($arg->nodeValue));
+ break;
+ default:
+ $arguments[$key] = XmlUtils::phpize($arg->nodeValue);
+ }
+ }
+
+ return $arguments;
+ }
+
+ /**
+ * Get child elements by name.
+ *
+ * @param \DOMNode $node
+ * @param mixed $name
+ *
+ * @return array
+ */
+ private function getChildren(\DOMNode $node, $name)
+ {
+ $children = array();
+ foreach ($node->childNodes as $child) {
+ if ($child instanceof \DOMElement && $child->localName === $name && $child->namespaceURI === self::NS) {
+ $children[] = $child;
+ }
+ }
+
+ return $children;
+ }
+
+ /**
+ * Validates a documents XML schema.
+ *
+ * @param \DOMDocument $dom
+ *
+ * @return bool
+ *
+ * @throws RuntimeException When extension references a non-existent XSD file
+ */
+ public function validateSchema(\DOMDocument $dom)
+ {
+ $schemaLocations = array('http://symfony.com/schema/dic/services' => str_replace('\\', '/', __DIR__.'/schema/dic/services/services-1.0.xsd'));
+
+ if ($element = $dom->documentElement->getAttributeNS('http://www.w3.org/2001/XMLSchema-instance', 'schemaLocation')) {
+ $items = preg_split('/\s+/', $element);
+ for ($i = 0, $nb = count($items); $i < $nb; $i += 2) {
+ if (!$this->container->hasExtension($items[$i])) {
+ continue;
+ }
+
+ if (($extension = $this->container->getExtension($items[$i])) && false !== $extension->getXsdValidationBasePath()) {
+ $path = str_replace($extension->getNamespace(), str_replace('\\', '/', $extension->getXsdValidationBasePath()).'/', $items[$i + 1]);
+
+ if (!is_file($path)) {
+ throw new RuntimeException(sprintf('Extension "%s" references a non-existent XSD file "%s"', get_class($extension), $path));
+ }
+
+ $schemaLocations[$items[$i]] = $path;
+ }
+ }
+ }
+
+ $tmpfiles = array();
+ $imports = '';
+ foreach ($schemaLocations as $namespace => $location) {
+ $parts = explode('/', $location);
+ if (0 === stripos($location, 'phar://')) {
+ $tmpfile = tempnam(sys_get_temp_dir(), 'sf2');
+ if ($tmpfile) {
+ copy($location, $tmpfile);
+ $tmpfiles[] = $tmpfile;
+ $parts = explode('/', str_replace('\\', '/', $tmpfile));
+ }
+ }
+ $drive = '\\' === DIRECTORY_SEPARATOR ? array_shift($parts).'/' : '';
+ $location = 'file:///'.$drive.implode('/', array_map('rawurlencode', $parts));
+
+ $imports .= sprintf(' <xsd:import namespace="%s" schemaLocation="%s" />'."\n", $namespace, $location);
+ }
+
+ $source = <<<EOF
+<?xml version="1.0" encoding="utf-8" ?>
+<xsd:schema xmlns="http://symfony.com/schema"
+ xmlns:xsd="http://www.w3.org/2001/XMLSchema"
+ targetNamespace="http://symfony.com/schema"
+ elementFormDefault="qualified">
+
+ <xsd:import namespace="http://www.w3.org/XML/1998/namespace"/>
+$imports
+</xsd:schema>
+EOF
+ ;
+
+ $disableEntities = libxml_disable_entity_loader(false);
+ $valid = @$dom->schemaValidateSource($source);
+ libxml_disable_entity_loader($disableEntities);
+
+ foreach ($tmpfiles as $tmpfile) {
+ @unlink($tmpfile);
+ }
+
+ return $valid;
+ }
+
+ /**
+ * Validates an extension.
+ *
+ * @param \DOMDocument $dom
+ * @param string $file
+ *
+ * @throws InvalidArgumentException When no extension is found corresponding to a tag
+ */
+ private function validateExtensions(\DOMDocument $dom, $file)
+ {
+ foreach ($dom->documentElement->childNodes as $node) {
+ if (!$node instanceof \DOMElement || 'http://symfony.com/schema/dic/services' === $node->namespaceURI) {
+ continue;
+ }
+
+ // can it be handled by an extension?
+ if (!$this->container->hasExtension($node->namespaceURI)) {
+ $extensionNamespaces = array_filter(array_map(function ($ext) { return $ext->getNamespace(); }, $this->container->getExtensions()));
+ throw new InvalidArgumentException(sprintf(
+ 'There is no extension able to load the configuration for "%s" (in %s). Looked for namespace "%s", found %s',
+ $node->tagName,
+ $file,
+ $node->namespaceURI,
+ $extensionNamespaces ? sprintf('"%s"', implode('", "', $extensionNamespaces)) : 'none'
+ ));
+ }
+ }
+ }
+
+ /**
+ * Loads from an extension.
+ *
+ * @param \DOMDocument $xml
+ */
+ private function loadFromExtensions(\DOMDocument $xml)
+ {
+ foreach ($xml->documentElement->childNodes as $node) {
+ if (!$node instanceof \DOMElement || $node->namespaceURI === self::NS) {
+ continue;
+ }
+
+ $values = static::convertDomElementToArray($node);
+ if (!is_array($values)) {
+ $values = array();
+ }
+
+ $this->container->loadFromExtension($node->namespaceURI, $values);
+ }
+ }
+
+ /**
+ * Converts a \DomElement object to a PHP array.
+ *
+ * The following rules applies during the conversion:
+ *
+ * * Each tag is converted to a key value or an array
+ * if there is more than one "value"
+ *
+ * * The content of a tag is set under a "value" key (<foo>bar</foo>)
+ * if the tag also has some nested tags
+ *
+ * * The attributes are converted to keys (<foo foo="bar"/>)
+ *
+ * * The nested-tags are converted to keys (<foo><foo>bar</foo></foo>)
+ *
+ * @param \DomElement $element A \DomElement instance
+ *
+ * @return array A PHP array
+ */
+ public static function convertDomElementToArray(\DOMElement $element)
+ {
+ return XmlUtils::convertDomElementToArray($element);
+ }
+}
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