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<?php |
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namespace Junker\Silex; |
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use Symfony\Component\Yaml\Yaml; |
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use Symfony\Component\Config\Loader\FileLoader; |
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use Symfony\Component\Config\Resource\FileResource; |
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use Symfony\Component\Yaml\Exception\ParseException; |
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use Symfony\Component\Yaml\Parser as YamlParser; |
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class YamlFileLoader extends FileLoader |
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{ |
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private $yamlParser; |
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public function load($file, $type = null) |
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{ |
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$path = $this->locator->locate($file); |
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$data = $this->loadFile($path); |
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// empty file |
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if ($data === null) { |
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$data = array(); |
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} |
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// not an array |
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if (!is_array($data)) { |
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throw new \InvalidArgumentException(sprintf('The file "%s" must contain a YAML array.', $file)); |
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} |
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$config = new Config($data); |
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$config->addResource(new FileResource($path)); |
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// imports |
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$this->parseImports($config, $path); |
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return $config; |
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} |
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protected function loadFile($file) |
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{ |
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if (!class_exists('Symfony\Component\Yaml\Parser')) { |
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throw new \RuntimeException('Unable to load YAML config files as the Symfony Yaml Component is not installed.'); |
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} |
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if (!stream_is_local($file)) { |
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throw new \InvalidArgumentException(sprintf('This is not a local file "%s".', $file)); |
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} |
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if (!file_exists($file)) { |
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throw new \InvalidArgumentException(sprintf('The service file "%s" is not valid.', $file)); |
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} |
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if ($this->yamlParser === null) { |
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$this->yamlParser = new YamlParser(); |
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} |
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try { |
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$data = $this->yamlParser->parse(file_get_contents($file)); |
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} catch (ParseException $e) { |
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throw new \InvalidArgumentException(sprintf('The file "%s" does not contain valid YAML.', $file), 0, $e); |
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} |
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return $data; |
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} |
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private function parseImports(Config &$config, $file) |
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{ |
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if (!isset($config->data['imports'])) { |
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return; |
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} |
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if (!is_array($config->data['imports'])) { |
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throw new \InvalidArgumentException(sprintf('The "imports" key should contain an array in %s. Check your YAML syntax.', $file)); |
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} |
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$defaultDirectory = dirname($file); |
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foreach ($config->data['imports'] as $import) { |
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if (!is_array($import)) { |
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throw new \InvalidArgumentException(sprintf('The values in the "imports" key should be arrays in %s. Check your YAML syntax.', $file)); |
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} |
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$this->setCurrentDir($defaultDirectory); |
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$sub_config = $this->import($import['resource'], null, isset($import['ignore_errors']) ? (bool) $import['ignore_errors'] : false, $file); |
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$config->addConfig($sub_config); |
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unset($config->data['imports']); |
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} |
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} |
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public function supports($resource, $type = null) |
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{ |
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return is_string($resource) && 'yml' === pathinfo($resource, PATHINFO_EXTENSION) && (!$type || 'yaml' === $type); |
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} |
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} |
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If a method or function can return multiple different values and unless you are sure that you only can receive a single value in this context, we recommend to add an additional type check:
If this a common case that PHP Analyzer should handle natively, please let us know by opening an issue.