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<?php |
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namespace Fitbug\SymfonySerializer\YamlEncoderDecoder; |
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use Symfony\Component\Serializer\Encoder\DecoderInterface; |
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use Symfony\Component\Serializer\Exception\UnexpectedValueException; |
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use Symfony\Component\Yaml\Yaml; |
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class YamlDecode implements DecoderInterface |
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{ |
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const OPTION_EXCEPTION_ON_INVALID_TYPE = 'yaml_decode_exception_on_invalid_type'; |
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const OPTION_OBJECT = 'yaml_decode_object'; |
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const OPTION_OBJECT_FOR_MAP = 'yaml_decode_object_for_map'; |
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const OPTION_DATE_TIME = 'yaml_decode_date_time'; |
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const SUPPORTED_ENCODING_YAML = "yaml"; |
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/** |
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* @var bool |
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*/ |
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private $exceptionOnInvalidType; |
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/** |
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* @var bool |
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*/ |
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private $object; |
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/** |
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* @var bool |
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*/ |
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private $objectForMap; |
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/** |
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* @var bool |
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*/ |
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private $dateTime; |
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/** |
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* Constructs a new YamlDecode instance. |
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* |
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* @param bool $exceptionOnInvalidType |
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* @param bool $object |
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* @param bool $objectForMap |
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* @param bool $dateTime |
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*/ |
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public function __construct( |
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$exceptionOnInvalidType = false, |
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$object = false, |
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$objectForMap = false, |
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$dateTime = false |
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) { |
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$this->exceptionOnInvalidType = $exceptionOnInvalidType; |
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$this->object = $object; |
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$this->objectForMap = $objectForMap; |
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$this->dateTime = $dateTime; |
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} |
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/** |
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* Decodes a string into PHP data. |
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* |
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* @param string $data Data to decode |
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* @param string $format Format name |
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* @param array $context options that decoders have access to |
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* |
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* The format parameter specifies which format the data is in; valid values |
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* depend on the specific implementation. The only format we support is 'yaml' |
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* |
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* @return mixed |
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* |
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* @throws UnexpectedValueException |
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*/ |
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public function decode($data, $format, array $context = []) |
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{ |
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$context = $this->resolveContext($context); |
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$options = $this->contextToOptions($context); |
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return Yaml::parse($data, $options); |
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} |
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/** |
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* Checks whether the deserializer can decode from given format. |
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* |
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* We only support yaml. |
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* |
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* @param string $format format name |
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* |
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* @return bool |
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*/ |
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public function supportsDecoding($format) |
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{ |
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return $format == self::SUPPORTED_ENCODING_YAML; |
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} |
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/** |
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* Merges the default options of the Yaml Decoder with the passed context. |
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* |
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* @param array $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 = [ |
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self::OPTION_EXCEPTION_ON_INVALID_TYPE => $this->exceptionOnInvalidType, |
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self::OPTION_OBJECT => $this->object, |
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self::OPTION_OBJECT_FOR_MAP => $this->objectForMap, |
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self::OPTION_DATE_TIME => $this->dateTime, |
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]; |
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return array_merge($defaultOptions, $context); |
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} |
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/** |
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* Convert the context to options understood by the parser |
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* |
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* @param array $options |
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* |
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* @return int |
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*/ |
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private function contextToOptions(array $options) |
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{ |
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$optionToBitMap = [ |
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self::OPTION_EXCEPTION_ON_INVALID_TYPE => "PARSE_EXCEPTION_ON_INVALID_TYPE", |
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self::OPTION_OBJECT => "PARSE_OBJECT", |
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self::OPTION_OBJECT_FOR_MAP => "PARSE_OBJECT_FOR_MAP", |
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self::OPTION_DATE_TIME => "PARSE_DATETIME", |
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]; |
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$yamlClass = "Symfony\\Component\\Yaml\\Yaml"; |
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$bitMaskedOption = 0; |
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foreach ($optionToBitMap as $option => $bitMastConstant) { |
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$fullConstant = $yamlClass . "::" . $bitMastConstant; |
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if (defined($fullConstant)) { |
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$bitMask = constant($fullConstant); |
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if ($options[ $option ]) { |
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$bitMaskedOption = $bitMaskedOption | $bitMask; |
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} |
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} |
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} |
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return $bitMaskedOption; |
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} |
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} |
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Very long variable names usually make code harder to read. It is therefore recommended not to make variable names too verbose.