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<?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\Config\Definition;
/**
* This class is the entry point for config normalization/merging/finalization.
*
* @author Johannes M. Schmitt <schmittjoh@gmail.com>
*/
class Processor
{
/**
* Processes an array of configurations.
*
* @param NodeInterface $configTree The node tree describing the configuration
* @param array $configs An array of configuration items to process
*
* @return array The processed configuration
*/
public function process(NodeInterface $configTree, array $configs)
{
$currentConfig = array();
foreach ($configs as $config) {
$config = $configTree->normalize($config);
$currentConfig = $configTree->merge($currentConfig, $config);
}
return $configTree->finalize($currentConfig);
}
/**
* Processes an array of configurations.
*
* @param ConfigurationInterface $configuration The configuration class
* @param array $configs An array of configuration items to process
*
* @return array The processed configuration
*/
public function processConfiguration(ConfigurationInterface $configuration, array $configs)
{
return $this->process($configuration->getConfigTreeBuilder()->buildTree(), $configs);
}
/**
* Normalizes a configuration entry.
*
* This method returns a normalize configuration array for a given key
* to remove the differences due to the original format (YAML and XML mainly).
*
* Here is an example.
*
* The configuration in XML:
*
* <twig:extension>twig.extension.foo</twig:extension>
* <twig:extension>twig.extension.bar</twig:extension>
*
* And the same configuration in YAML:
*
* extensions: ['twig.extension.foo', 'twig.extension.bar']
*
* @param array $config A config array
* @param string $key The key to normalize
* @param string $plural The plural form of the key if it is irregular
*
* @return array
*/
public static function normalizeConfig($config, $key, $plural = null)
{
if (null === $plural) {
$plural = $key.'s';
}
if (isset($config[$plural])) {
return $config[$plural];
}
if (isset($config[$key])) {
if (is_string($config[$key]) || !is_int(key($config[$key]))) {
// only one
return array($config[$key]);
}
return $config[$key];
}
return array();
}
}
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