--- /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\Dumper;
+
+use Symfony\Component\Yaml\Dumper as YmlDumper;
+use Symfony\Component\DependencyInjection\Alias;
+use Symfony\Component\DependencyInjection\ContainerInterface;
+use Symfony\Component\DependencyInjection\Definition;
+use Symfony\Component\DependencyInjection\Parameter;
+use Symfony\Component\DependencyInjection\Reference;
+use Symfony\Component\DependencyInjection\Exception\RuntimeException;
+use Symfony\Component\ExpressionLanguage\Expression;
+
+/**
+ * YamlDumper dumps a service container as a YAML string.
+ *
+ * @author Fabien Potencier <fabien@symfony.com>
+ */
+class YamlDumper extends Dumper
+{
+ private $dumper;
+
+ /**
+ * Dumps the service container as an YAML string.
+ *
+ * @param array $options An array of options
+ *
+ * @return string A YAML string representing of the service container
+ */
+ public function dump(array $options = array())
+ {
+ if (!class_exists('Symfony\Component\Yaml\Dumper')) {
+ throw new RuntimeException('Unable to dump the container as the Symfony Yaml Component is not installed.');
+ }
+
+ if (null === $this->dumper) {
+ $this->dumper = new YmlDumper();
+ }
+
+ return $this->addParameters()."\n".$this->addServices();
+ }
+
+ /**
+ * Adds a service.
+ *
+ * @param string $id
+ * @param Definition $definition
+ *
+ * @return string
+ */
+ private function addService($id, $definition)
+ {
+ $code = " $id:\n";
+ if ($class = $definition->getClass()) {
+ if ('\\' === substr($class, 0, 1)) {
+ $class = substr($class, 1);
+ }
+
+ $code .= sprintf(" class: %s\n", $this->dumper->dump($class));
+ }
+
+ if (!$definition->isPublic()) {
+ $code .= " public: false\n";
+ }
+
+ $tagsCode = '';
+ foreach ($definition->getTags() as $name => $tags) {
+ foreach ($tags as $attributes) {
+ $att = array();
+ foreach ($attributes as $key => $value) {
+ $att[] = sprintf('%s: %s', $this->dumper->dump($key), $this->dumper->dump($value));
+ }
+ $att = $att ? ', '.implode(', ', $att) : '';
+
+ $tagsCode .= sprintf(" - { name: %s%s }\n", $this->dumper->dump($name), $att);
+ }
+ }
+ if ($tagsCode) {
+ $code .= " tags:\n".$tagsCode;
+ }
+
+ if ($definition->getFile()) {
+ $code .= sprintf(" file: %s\n", $this->dumper->dump($definition->getFile()));
+ }
+
+ if ($definition->isSynthetic()) {
+ $code .= sprintf(" synthetic: true\n");
+ }
+
+ if ($definition->isSynchronized(false)) {
+ $code .= sprintf(" synchronized: true\n");
+ }
+
+ if ($definition->isDeprecated()) {
+ $code .= sprintf(" deprecated: %s\n", $definition->getDeprecationMessage('%service_id%'));
+ }
+
+ if ($definition->isAutowired()) {
+ $code .= " autowire: true\n";
+ }
+
+ $autowiringTypesCode = '';
+ foreach ($definition->getAutowiringTypes() as $autowiringType) {
+ $autowiringTypesCode .= sprintf(" - %s\n", $this->dumper->dump($autowiringType));
+ }
+ if ($autowiringTypesCode) {
+ $code .= sprintf(" autowiring_types:\n%s", $autowiringTypesCode);
+ }
+
+ if ($definition->getFactoryClass(false)) {
+ $code .= sprintf(" factory_class: %s\n", $this->dumper->dump($definition->getFactoryClass(false)));
+ }
+
+ if ($definition->isLazy()) {
+ $code .= sprintf(" lazy: true\n");
+ }
+
+ if ($definition->getFactoryMethod(false)) {
+ $code .= sprintf(" factory_method: %s\n", $this->dumper->dump($definition->getFactoryMethod(false)));
+ }
+
+ if ($definition->getFactoryService(false)) {
+ $code .= sprintf(" factory_service: %s\n", $this->dumper->dump($definition->getFactoryService(false)));
+ }
+
+ if ($definition->getArguments()) {
+ $code .= sprintf(" arguments: %s\n", $this->dumper->dump($this->dumpValue($definition->getArguments()), 0));
+ }
+
+ if ($definition->getProperties()) {
+ $code .= sprintf(" properties: %s\n", $this->dumper->dump($this->dumpValue($definition->getProperties()), 0));
+ }
+
+ if ($definition->getMethodCalls()) {
+ $code .= sprintf(" calls:\n%s\n", $this->dumper->dump($this->dumpValue($definition->getMethodCalls()), 1, 12));
+ }
+
+ if (!$definition->isShared()) {
+ $code .= " shared: false\n";
+ }
+
+ if (ContainerInterface::SCOPE_CONTAINER !== $scope = $definition->getScope(false)) {
+ $code .= sprintf(" scope: %s\n", $this->dumper->dump($scope));
+ }
+
+ if (null !== $decorated = $definition->getDecoratedService()) {
+ list($decorated, $renamedId, $priority) = $decorated;
+ $code .= sprintf(" decorates: %s\n", $decorated);
+ if (null !== $renamedId) {
+ $code .= sprintf(" decoration_inner_name: %s\n", $renamedId);
+ }
+ if (0 !== $priority) {
+ $code .= sprintf(" decoration_priority: %s\n", $priority);
+ }
+ }
+
+ if ($callable = $definition->getFactory()) {
+ $code .= sprintf(" factory: %s\n", $this->dumper->dump($this->dumpCallable($callable), 0));
+ }
+
+ if ($callable = $definition->getConfigurator()) {
+ $code .= sprintf(" configurator: %s\n", $this->dumper->dump($this->dumpCallable($callable), 0));
+ }
+
+ return $code;
+ }
+
+ /**
+ * Adds a service alias.
+ *
+ * @param string $alias
+ * @param Alias $id
+ *
+ * @return string
+ */
+ private function addServiceAlias($alias, $id)
+ {
+ if ($id->isPublic()) {
+ return sprintf(" %s: '@%s'\n", $alias, $id);
+ }
+
+ return sprintf(" %s:\n alias: %s\n public: false\n", $alias, $id);
+ }
+
+ /**
+ * Adds services.
+ *
+ * @return string
+ */
+ private function addServices()
+ {
+ if (!$this->container->getDefinitions()) {
+ return '';
+ }
+
+ $code = "services:\n";
+ foreach ($this->container->getDefinitions() as $id => $definition) {
+ $code .= $this->addService($id, $definition);
+ }
+
+ $aliases = $this->container->getAliases();
+ foreach ($aliases as $alias => $id) {
+ while (isset($aliases[(string) $id])) {
+ $id = $aliases[(string) $id];
+ }
+ $code .= $this->addServiceAlias($alias, $id);
+ }
+
+ return $code;
+ }
+
+ /**
+ * Adds parameters.
+ *
+ * @return string
+ */
+ private function addParameters()
+ {
+ if (!$this->container->getParameterBag()->all()) {
+ return '';
+ }
+
+ $parameters = $this->prepareParameters($this->container->getParameterBag()->all(), $this->container->isFrozen());
+
+ return $this->dumper->dump(array('parameters' => $parameters), 2);
+ }
+
+ /**
+ * Dumps callable to YAML format.
+ *
+ * @param callable $callable
+ *
+ * @return callable
+ */
+ private function dumpCallable($callable)
+ {
+ if (is_array($callable)) {
+ if ($callable[0] instanceof Reference) {
+ $callable = array($this->getServiceCall((string) $callable[0], $callable[0]), $callable[1]);
+ } else {
+ $callable = array($callable[0], $callable[1]);
+ }
+ }
+
+ return $callable;
+ }
+
+ /**
+ * Dumps the value to YAML format.
+ *
+ * @param mixed $value
+ *
+ * @return mixed
+ *
+ * @throws RuntimeException When trying to dump object or resource
+ */
+ private function dumpValue($value)
+ {
+ if (is_array($value)) {
+ $code = array();
+ foreach ($value as $k => $v) {
+ $code[$k] = $this->dumpValue($v);
+ }
+
+ return $code;
+ } elseif ($value instanceof Reference) {
+ return $this->getServiceCall((string) $value, $value);
+ } elseif ($value instanceof Parameter) {
+ return $this->getParameterCall((string) $value);
+ } elseif ($value instanceof Expression) {
+ return $this->getExpressionCall((string) $value);
+ } elseif (is_object($value) || is_resource($value)) {
+ throw new RuntimeException('Unable to dump a service container if a parameter is an object or a resource.');
+ }
+
+ return $value;
+ }
+
+ /**
+ * Gets the service call.
+ *
+ * @param string $id
+ * @param Reference $reference
+ *
+ * @return string
+ */
+ private function getServiceCall($id, Reference $reference = null)
+ {
+ if (null !== $reference && ContainerInterface::EXCEPTION_ON_INVALID_REFERENCE !== $reference->getInvalidBehavior()) {
+ return sprintf('@?%s', $id);
+ }
+
+ return sprintf('@%s', $id);
+ }
+
+ /**
+ * Gets parameter call.
+ *
+ * @param string $id
+ *
+ * @return string
+ */
+ private function getParameterCall($id)
+ {
+ return sprintf('%%%s%%', $id);
+ }
+
+ private function getExpressionCall($expression)
+ {
+ return sprintf('@=%s', $expression);
+ }
+
+ /**
+ * Prepares parameters.
+ *
+ * @param array $parameters
+ * @param bool $escape
+ *
+ * @return array
+ */
+ private function prepareParameters(array $parameters, $escape = true)
+ {
+ $filtered = array();
+ foreach ($parameters as $key => $value) {
+ if (is_array($value)) {
+ $value = $this->prepareParameters($value, $escape);
+ } elseif ($value instanceof Reference || is_string($value) && 0 === strpos($value, '@')) {
+ $value = '@'.$value;
+ }
+
+ $filtered[$key] = $value;
+ }
+
+ return $escape ? $this->escape($filtered) : $filtered;
+ }
+
+ /**
+ * Escapes arguments.
+ *
+ * @param array $arguments
+ *
+ * @return array
+ */
+ private function escape(array $arguments)
+ {
+ $args = array();
+ foreach ($arguments as $k => $v) {
+ if (is_array($v)) {
+ $args[$k] = $this->escape($v);
+ } elseif (is_string($v)) {
+ $args[$k] = str_replace('%', '%%', $v);
+ } else {
+ $args[$k] = $v;
+ }
+ }
+
+ return $args;
+ }
+}
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