108 lines
3.2 KiB
PHP
108 lines
3.2 KiB
PHP
<?php
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/*
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* This file is part of the Symfony package.
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*
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* (c) Fabien Potencier <fabien@symfony.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 Symfony\Component\Serializer\Encoder;
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use Symfony\Component\Serializer\Exception\NotEncodableValueException;
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/**
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* Decodes JSON data.
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*
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* @author Sander Coolen <sander@jibber.nl>
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*/
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class JsonDecode implements DecoderInterface
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{
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protected $serializer;
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private $associative;
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private $recursionDepth;
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/**
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* Constructs a new JsonDecode instance.
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*
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* @param bool $associative True to return the result associative array, false for a nested stdClass hierarchy
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* @param int $depth Specifies the recursion depth
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*/
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public function __construct($associative = false, $depth = 512)
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{
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$this->associative = $associative;
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$this->recursionDepth = (int) $depth;
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}
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/**
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* Decodes data.
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*
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* @param string $data The encoded JSON string to decode
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* @param string $format Must be set to JsonEncoder::FORMAT
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* @param array $context An optional set of options for the JSON decoder; see below
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*
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* The $context array is a simple key=>value array, with the following supported keys:
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*
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* json_decode_associative: boolean
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* If true, returns the object as associative array.
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* If false, returns the object as nested stdClass
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* If not specified, this method will use the default set in JsonDecode::__construct
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*
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* json_decode_recursion_depth: integer
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* Specifies the maximum recursion depth
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* If not specified, this method will use the default set in JsonDecode::__construct
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*
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* json_decode_options: integer
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* Specifies additional options as per documentation for json_decode. Only supported with PHP 5.4.0 and higher
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*
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* @return mixed
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*
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* @throws NotEncodableValueException
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*
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* @see http://php.net/json_decode json_decode
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*/
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public function decode($data, $format, array $context = array())
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{
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$context = $this->resolveContext($context);
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$associative = $context['json_decode_associative'];
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$recursionDepth = $context['json_decode_recursion_depth'];
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$options = $context['json_decode_options'];
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$decodedData = json_decode($data, $associative, $recursionDepth, $options);
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if (JSON_ERROR_NONE !== json_last_error()) {
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throw new NotEncodableValueException(json_last_error_msg());
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}
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return $decodedData;
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}
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/**
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* {@inheritdoc}
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*/
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public function supportsDecoding($format)
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{
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return JsonEncoder::FORMAT === $format;
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}
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/**
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* Merges the default options of the Json Decoder with the passed context.
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*
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* @return array
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*/
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private function resolveContext(array $context)
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{
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$defaultOptions = array(
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'json_decode_associative' => $this->associative,
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'json_decode_recursion_depth' => $this->recursionDepth,
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'json_decode_options' => 0,
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);
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return array_merge($defaultOptions, $context);
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}
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}
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