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<?php |
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namespace Crossjoin\Json; |
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use Crossjoin\Json\Exception\EncodingNotSupportedException; |
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use Crossjoin\Json\Exception\InvalidArgumentException; |
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/** |
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* Class Encoder |
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* |
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* @package Crossjoin\Json |
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* @author Christoph Ziegenberg <[email protected]> |
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*/ |
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class Encoder extends Converter |
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{ |
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const UTF16 = self::UTF16BE; |
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const UTF32 = self::UTF32BE; |
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/** |
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* @var string |
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*/ |
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private $encoding = self::UTF8; |
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/** |
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* Encoder constructor. |
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* |
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* @param string $encoding |
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* @throws \Crossjoin\Json\Exception\EncodingNotSupportedException |
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* @throws \Crossjoin\Json\Exception\InvalidArgumentException |
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*/ |
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public function __construct($encoding = self::UTF8) |
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{ |
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$this->setEncoding($encoding); |
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} |
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/** |
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* @return string |
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*/ |
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public function getEncoding() |
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{ |
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return $this->encoding; |
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} |
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/** |
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* @param string $encoding |
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* |
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* @throws \Crossjoin\Json\Exception\EncodingNotSupportedException |
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* @throws \Crossjoin\Json\Exception\InvalidArgumentException |
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*/ |
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public function setEncoding($encoding) |
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{ |
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if (is_string($encoding)) { |
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if (in_array($encoding, array(self::UTF8, self::UTF16BE, self::UTF16LE, self::UTF32BE, self::UTF32LE), true)) { |
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$this->encoding = $encoding; |
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} else { |
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throw new EncodingNotSupportedException(sprintf("Unsupported encoding '%s'.", $encoding), 1478101930); |
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} |
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} else { |
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throw InvalidArgumentException::getInstance('string', 'encoding', $encoding, 1478196374); |
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} |
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} |
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/** |
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* @param mixed $value |
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* @param int $options |
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* @param int $depth |
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* |
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* @return string |
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* @throws \Crossjoin\Json\Exception\NativeJsonErrorException |
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* @throws \Crossjoin\Json\Exception\InvalidArgumentException |
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* @throws \Crossjoin\Json\Exception\ExtensionRequiredException |
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* @throws \Crossjoin\Json\Exception\ConversionFailedException |
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*/ |
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public function encode($value, $options = 0, $depth = 512) |
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{ |
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// Check arguments |
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if (!is_int($options)) { |
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throw InvalidArgumentException::getInstance('integer', 'options', $options, 1478418109); |
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} elseif (!is_int($depth)) { |
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throw InvalidArgumentException::getInstance('integer', 'depth', $depth, 1478418110); |
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} |
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// Try to encode the data |
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// @codeCoverageIgnoreStart |
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if (version_compare(PHP_VERSION, '5.5.0', '>=')) { |
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$json = $this->encodePhpGte55($value, $options, $depth); |
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} else { |
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$json = $this->encodePhpLt55($value, $options); |
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} |
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// @codeCoverageIgnoreEnd |
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// Convert |
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return $this->convertEncoding($json, self::UTF8, $this->getEncoding()); |
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} |
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/** |
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* @param mixed $value |
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* @param int $options |
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* @param int $depth |
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* |
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* @return string |
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* @throws \Crossjoin\Json\Exception\NativeJsonErrorException |
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*/ |
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private function encodePhpGte55($value, $options, $depth) |
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{ |
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$json = \json_encode($value, $options, $depth); |
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if (!is_string($json)) { |
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throw $this->getNativeJsonErrorException(); |
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} |
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return $json; |
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} |
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/** |
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* @param mixed $value |
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* @param int $options |
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* |
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* @return string |
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* @throws \Crossjoin\Json\Exception\NativeJsonErrorException |
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* @throws \Crossjoin\Json\Exception\InvalidArgumentException |
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*/ |
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private function encodePhpLt55($value, $options) |
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{ |
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// Although the json_last_error() function exists, json_encode() in PHP < 5.5.0 sometimes |
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// triggers an error, for example when an unsupported type is tried to be encoded. We |
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// suppress these errors and throw an own exception instead. |
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$json = @\json_encode($value, $options); |
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if ($value !== null && $json === 'null') { |
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throw new InvalidArgumentException('The type tried to encode is not supported.', 1478445896); |
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} |
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if (!is_string($json)) { |
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throw $this->getNativeJsonErrorException(); |
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} |
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return $json; |
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} |
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} |
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crossjoin /
Json
