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<?php |
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/** |
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* @author Sergii Bondarenko, <[email protected]> |
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*/ |
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namespace Behat; |
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// Behat extension interface. |
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use Behat\Testwork\ServiceContainer\Extension; |
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// Tools for dependency injection. |
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use Symfony\Component\DependencyInjection\Definition; |
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use Symfony\Component\DependencyInjection\ContainerBuilder; |
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// Behat context extension and tools. |
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use Behat\Behat\Context\ServiceContainer\ContextExtension; |
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// Behat environment extension and tools. |
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use Behat\Testwork\Environment\ServiceContainer\EnvironmentExtension; |
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/** |
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* Class EnvironmentLoader. |
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* |
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* @package Behat |
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*/ |
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final class EnvironmentLoader |
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{ |
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/** |
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* DI container of the extension. |
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* |
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* @var ContainerBuilder |
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*/ |
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private $container; |
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/** |
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* Path of the extension. |
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* |
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* @var string |
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*/ |
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private $path = ''; |
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/** |
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* Namespace of the extension. |
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* |
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* @var string |
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*/ |
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private $namespace = ''; |
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/** |
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* Configuration key of the extension in a lowercase. |
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* |
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* @var string |
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*/ |
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private $configKey = ''; |
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/** |
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* Formula: <EXTENSION_NAMESPACE>\<EXTENSION_SUB_NAMESPACE>\<EXTENSION_CONFIG_KEY>. |
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* |
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* @var string |
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*/ |
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private $classPath = ''; |
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/** |
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* Definitions for extending container. |
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* |
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* @var Definition[] |
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*/ |
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private $definitions = []; |
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/** |
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* EnvironmentLoader constructor. |
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* |
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* @param Extension $extension |
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* @param ContainerBuilder $container |
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* @param array $config |
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*/ |
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public function __construct(Extension $extension, ContainerBuilder $container, array $config = []) |
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{ |
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$reflection = new \ReflectionClass($extension); |
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// Remove the "ServiceContainer" from the namespace of the extension object. |
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$this->namespace = rtrim(str_replace('ServiceContainer', '', $reflection->getNamespaceName()), '\\'); |
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// Remove the name of file and "ServiceContainer" from the path to extension. |
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$this->path = implode('/', array_slice(explode('/', $reflection->getFileName()), 0, -2)); |
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$this->container = $container; |
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// To not care about string format. |
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$this->configKey = strtolower($extension->getConfigKey()); |
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// Formula: <EXTENSION_NAMESPACE>\<EXTENSION_SUB_NAMESPACE>\<EXTENSION_CONFIG_KEY>. |
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$this->classPath = implode('\\', [ |
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$this->namespace, |
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// Placeholder for sub-namespace of the extension. |
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'%s', |
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// - Replace all dots, underscores and dashes by dot in the config key of extension. |
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// - Divide the result array by a dot. |
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// - Start every string in the result array from a capital letter. |
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// - Convert an array to string without separators. |
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implode(array_map('ucfirst', explode('.', str_replace(['.', '_', '-'], '.', $this->configKey)))), |
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]); |
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/** @see EnvironmentReader::__construct() */ |
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$this->extendContainer(EnvironmentExtension::READER_TAG, new Definition( |
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sprintf('%s\EnvironmentReader', __NAMESPACE__), |
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[$this->path, $this->namespace] |
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)); |
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$this->addDefinition( |
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'Context', |
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'Initializer', |
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'Behat\Behat\Context\Initializer\ContextInitializer', |
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ContextExtension::INITIALIZER_TAG, |
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[$config, $this->namespace, $this->path] |
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); |
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} |
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/** |
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* Implement extension's own environment reader. |
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* |
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* @param array $arguments |
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*/ |
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public function addEnvironmentReader(array $arguments = []) |
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{ |
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// Full namespace: <EXTENSION_NAMESPACE>\Environment\<EXTENSION_CONFIG_KEY>EnvironmentReader. |
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$this->addDefinition( |
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'Environment', |
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'Reader', |
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'Behat\Testwork\Environment\Reader\EnvironmentReader', |
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EnvironmentExtension::READER_TAG, |
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array_merge($arguments, [$this->namespace, $this->path]) |
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); |
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} |
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/** |
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* Extend DI container by dependencies. |
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*/ |
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public function load() |
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{ |
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foreach ($this->definitions as $tag => $definition) { |
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$this->extendContainer($tag, $definition); |
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} |
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} |
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/** |
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* Add dependency definition for DI container. |
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* |
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* @param string $subNamespace |
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* @param string $objectType |
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* @param string $interface |
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* @param string$tag |
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* @param array $arguments |
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*/ |
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private function addDefinition($subNamespace, $objectType, $interface, $tag, array $arguments = []) |
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{ |
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// For example we have registered extension at namespace: "Behat\TqExtension". Class, which |
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// implements extension interface, located at "Behat\TqExtension\ServiceContainer\TqExtension" |
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// and its method, "getConfigKey()", returns the "tq" string. In this case the full namespace |
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// of the reader object will be: "Behat\TqExtension\Environment\TqEnvironmentReader" and its |
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// constructor will have a set of arguments that were passed to this method. |
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$class = sprintf($this->classPath, $subNamespace) . $subNamespace . $objectType; |
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if (!class_exists($class)) { |
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throw new \RuntimeException(sprintf('Class "%s" does not exists!', $class)); |
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} |
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if (!in_array($interface, class_implements($class))) { |
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throw new \RuntimeException(sprintf('Class "%s" must implement the "%s" interface!', $class, $interface)); |
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} |
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$this->definitions[$tag] = new Definition($class, $arguments); |
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} |
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/** |
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* Add dependency to DI container. |
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* |
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* @param string $tag |
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* @param Definition $definition |
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*/ |
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private function extendContainer($tag, Definition $definition) |
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{ |
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$this->container |
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->setDefinition("$this->configKey.$tag", $definition) |
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->addTag($tag); |
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} |
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} |
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BR0kEN- /
environment-loader
