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<?php |
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namespace Symfony\Component\DependencyInjection; |
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use Symfony\Component\Config\ConfigCache; |
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use Symfony\Component\Config\FileLocator; |
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use Symfony\Component\DependencyInjection\Dumper\PhpDumper; |
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use Symfony\Component\DependencyInjection\Loader\YamlFileLoader; |
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class YamlCachedContainerBuilder |
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{ |
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/** |
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* @var string |
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*/ |
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private $cacheDir; |
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/** |
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* @var bool |
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*/ |
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private $debug; |
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/** |
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* Constructor. |
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* |
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* @param string $cacheDir |
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* @param bool $debug |
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*/ |
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public function __construct($cacheDir, $debug = false) |
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{ |
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$this->cacheDir = $cacheDir; |
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$this->debug = $debug; |
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} |
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/** |
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* Build the container. |
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* |
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* @param string $configDir |
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* @param string $configFile |
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* @param string $className |
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* @param string $namespace |
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* |
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* @return Container |
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*/ |
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public function build($configDir, $configFile, $className = 'CachedContainer', $namespace = 'Cache') |
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{ |
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if ($this->debug) { // provides useful info regarding namespace when in debug, ignored in prod for performance |
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self::checkNamespace($namespace); |
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self::checkClassName($className); |
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} |
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$fqClassName = '\\' . $namespace . '\\' . $className; |
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$cacheFile = $this->cacheDir . '/' . $className . '.php'; |
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$configCache = new ConfigCache($cacheFile, $this->debug); |
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if (!$configCache->isFresh()) { |
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$containerBuilder = new ContainerBuilder(); |
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$loader = new YamlFileLoader( |
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$containerBuilder, |
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new FileLocator($configDir) |
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); |
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$loader->load($configFile); |
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$containerBuilder->compile(); |
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$dumper = new PhpDumper($containerBuilder); |
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$configCache->write( |
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$dumper->dump(['class' => $className, 'namespace' => $namespace]), |
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$containerBuilder->getResources() |
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); |
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} |
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return new $fqClassName(); |
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} |
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/** |
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* Format the namespace to avoid any problem. |
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* |
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* @param $namespace |
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* |
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* @return string |
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*/ |
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private static function checkNamespace($namespace) |
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{ |
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if (empty($namespace)) { |
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throw new \InvalidArgumentException('Namespace cannot be empty'); |
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} |
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if (strrpos($namespace, '\\') === 0) { // if namespace begins with \ |
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throw new \InvalidArgumentException(sprintf('Namespace "%s" cannot begin with \\', $namespace)); |
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} |
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if (strrpos($namespace, '\\') === strlen($namespace) - 1) { // if namespace is ending with \ |
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throw new \InvalidArgumentException(sprintf('Namespace "%s" cannot end with \\', $namespace)); |
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} |
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// check if each part of the namespace is valid |
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$parts = explode('\\', $namespace); |
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foreach ($parts as $part) { |
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if (!self::isNameValid($part)) { |
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throw new \InvalidArgumentException( |
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sprintf('Invalid namespace part : "%s" for "%s"', $part, $namespace) |
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); |
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} |
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} |
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} |
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/** |
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* @param $className |
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*/ |
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private static function checkClassName($className) |
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{ |
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if (!self::isNameValid($className)) { |
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throw new \InvalidArgumentException(sprintf('Class name "%" is not valid', $className)); |
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} |
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} |
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/** |
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* @param $name |
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* |
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* @return bool |
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*/ |
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private static function isNameValid($name) |
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{ |
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return preg_match('/^[a-zA-Z_\x7f-\xff][a-zA-Z0-9_\x7f-\xff]*$/', $name, $matches) === 1 && |
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count($matches) === 1 && $matches[0] === $name; |
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} |
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} |
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remi-san /
sf-di-tools
