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<?php |
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/* |
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* This file is part of the FOSRestBundle package. |
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* |
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* (c) FriendsOfSymfony <http://friendsofsymfony.github.com/> |
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* |
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* For the full copyright and license information, please view the LICENSE |
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* file that was distributed with this source code. |
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*/ |
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namespace FOS\RestBundle\Normalizer; |
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use FOS\RestBundle\Normalizer\Exception\NormalizationException; |
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/** |
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* Normalizes the array by changing its keys from underscore to camel case. |
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* |
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* @author Florian Voutzinos <[email protected]> |
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*/ |
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class CamelKeysNormalizer implements ArrayNormalizerInterface |
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{ |
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/** |
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* {@inheritdoc} |
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*/ |
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public function normalize(array $data) |
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{ |
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$this->normalizeArray($data); |
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return $data; |
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} |
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/** |
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* Normalizes an array. |
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* |
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* @param array &$data |
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* |
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* @throws Exception\NormalizationException |
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*/ |
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private function normalizeArray(array &$data) |
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{ |
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$normalizedData = array(); |
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foreach ($data as $key => $val) { |
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$normalizedKey = $this->normalizeString($key); |
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if ($normalizedKey !== $key) { |
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if (array_key_exists($normalizedKey, $normalizedData)) { |
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throw new NormalizationException(sprintf( |
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'The key "%s" is invalid as it will override the existing key "%s"', |
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$key, |
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$normalizedKey |
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)); |
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} |
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} |
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$normalizedData[$normalizedKey] = $val; |
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$key = $normalizedKey; |
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if (is_array($val)) { |
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$this->normalizeArray($normalizedData[$key]); |
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} |
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} |
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$data = $normalizedData; |
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} |
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/** |
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* Normalizes a string. |
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* |
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* @param string $string |
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* |
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* @return string |
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*/ |
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protected function normalizeString($string) |
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{ |
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if (false === strpos($string, '_')) { |
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return $string; |
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} |
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return preg_replace_callback('/_([a-zA-Z0-9])/', function ($matches) { |
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return strtoupper($matches[1]); |
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}, $string); |
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} |
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} |
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FriendsOfSymfony /
FOSRestBundle
