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<?php |
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/* |
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* This file is part of the Webmozart JSON package. |
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* |
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* (c) Bernhard Schussek <[email protected]> |
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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 Webmozart\Json; |
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/** |
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* Encodes data as JSON. |
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* |
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* @since 1.0 |
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* |
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* @author Bernhard Schussek <[email protected]> |
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*/ |
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class JsonEncoder |
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{ |
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/** |
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* Encode a value as JSON array. |
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*/ |
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const JSON_ARRAY = 1; |
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/** |
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* Encode a value as JSON object. |
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*/ |
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const JSON_OBJECT = 2; |
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/** |
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* Encode a value as JSON string. |
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*/ |
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const JSON_STRING = 3; |
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/** |
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* Encode a value as JSON integer or float. |
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*/ |
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const JSON_NUMBER = 4; |
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/** |
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* @var JsonValidator |
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*/ |
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private $validator; |
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/** |
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* @var int |
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*/ |
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private $arrayEncoding = self::JSON_ARRAY; |
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/** |
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* @var int |
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*/ |
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private $numericEncoding = self::JSON_STRING; |
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/** |
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* @var bool |
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*/ |
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private $gtLtEscaped = false; |
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/** |
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* @var bool |
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*/ |
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private $ampersandEscaped = false; |
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/** |
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* @var bool |
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*/ |
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private $singleQuoteEscaped = false; |
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/** |
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* @var bool |
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*/ |
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private $doubleQuoteEscaped = false; |
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/** |
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* @var bool |
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*/ |
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private $slashEscaped = true; |
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/** |
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* @var bool |
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*/ |
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private $unicodeEscaped = true; |
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/** |
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* @var bool |
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*/ |
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private $prettyPrinting = false; |
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/** |
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* @var bool |
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*/ |
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private $terminatedWithLineFeed = false; |
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/** |
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* @var int |
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*/ |
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private $maxDepth = 512; |
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/** |
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* Creates a new encoder. |
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* |
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* @param null|JsonValidator $validator |
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*/ |
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public function __construct(JsonValidator $validator = null) |
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{ |
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$this->validator = $validator ?: new JsonValidator(); |
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} |
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/** |
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* Encodes data as JSON. |
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* |
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* If a schema is passed, the value is validated against that schema before |
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* encoding. The schema may be passed as file path or as object returned |
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* from `JsonDecoder::decodeFile($schemaFile)`. |
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* |
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* You can adjust the decoding with the various setters in this class. |
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* |
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* @param mixed $data The data to encode |
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* @param string|object $schema The schema file or object |
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* |
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* @return string The JSON string |
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* |
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* @throws EncodingFailedException If the data could not be encoded |
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* @throws ValidationFailedException If the data fails schema validation |
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* @throws InvalidSchemaException If the schema is invalid |
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*/ |
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public function encode($data, $schema = null) |
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{ |
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if (null === $schema && isset($data->{'$schema'})) { |
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$schema = $data->{'$schema'}; |
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} |
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if (null !== $schema) { |
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$errors = $this->validator->validate($data, $schema); |
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if (count($errors) > 0) { |
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throw ValidationFailedException::fromErrors($errors); |
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} |
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} |
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$options = 0; |
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if (self::JSON_OBJECT === $this->arrayEncoding) { |
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$options |= JSON_FORCE_OBJECT; |
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} |
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if (self::JSON_NUMBER === $this->numericEncoding) { |
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$options |= JSON_NUMERIC_CHECK; |
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} |
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if ($this->gtLtEscaped) { |
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$options |= JSON_HEX_TAG; |
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} |
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if ($this->ampersandEscaped) { |
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$options |= JSON_HEX_AMP; |
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} |
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if ($this->singleQuoteEscaped) { |
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$options |= JSON_HEX_APOS; |
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} |
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if ($this->doubleQuoteEscaped) { |
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$options |= JSON_HEX_QUOT; |
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} |
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if (PHP_VERSION_ID >= 50400) { |
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if (!$this->slashEscaped) { |
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$options |= JSON_UNESCAPED_SLASHES; |
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} |
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if (!$this->unicodeEscaped) { |
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$options |= JSON_UNESCAPED_UNICODE; |
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} |
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if ($this->prettyPrinting) { |
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$options |= JSON_PRETTY_PRINT; |
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} |
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} |
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if (PHP_VERSION_ID < 71000) { |
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// PHP before 7.1 decodes empty properties as "_empty_". Make |
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// sure the encoding of these properties works again. |
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if (is_object($data) && isset($data->{'_empty_'})) { |
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$data = (array) $data; |
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} |
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if (is_array($data) && isset($data['_empty_'])) { |
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// Maintain key order |
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$keys = array_keys($data); |
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$keys[array_search('_empty_', $keys, true)] = ''; |
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$data = array_combine($keys, $data); |
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} |
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} |
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if (PHP_VERSION_ID >= 50500) { |
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$maxDepth = $this->maxDepth; |
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// We subtract 1 from the max depth to make JsonDecoder and |
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// JsonEncoder consistent. json_encode() and json_decode() behave |
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// differently for their depth values. See the test cases for |
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// examples. |
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// HHVM does not have this inconsistency. |
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if (!defined('HHVM_VERSION')) { |
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--$maxDepth; |
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} |
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$encoded = json_encode($data, $options, $maxDepth); |
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} else { |
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$encoded = json_encode($data, $options); |
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} |
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if (PHP_VERSION_ID < 50400 && !$this->slashEscaped) { |
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// PHP below 5.4 does not allow to turn off slash escaping. Let's |
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// unescape slashes manually. |
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$encoded = str_replace('\\/', '/', $encoded); |
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} |
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if (JSON_ERROR_NONE !== json_last_error()) { |
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throw new EncodingFailedException(sprintf( |
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'The data could not be encoded as JSON: %s', |
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JsonError::getLastErrorMessage() |
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), json_last_error()); |
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} |
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if ($this->terminatedWithLineFeed) { |
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$encoded .= "\n"; |
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} |
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return $encoded; |
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} |
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/** |
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* Encodes data into a JSON file. |
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* |
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* @param mixed $data The data to encode |
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* @param string $path The path where the JSON file will be stored |
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* @param string|object $schema The schema file or object |
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* |
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* @throws EncodingFailedException If the data could not be encoded |
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* @throws ValidationFailedException If the data fails schema validation |
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* @throws InvalidSchemaException If the schema is invalid |
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* |
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* @see encode |
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*/ |
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public function encodeFile($data, $path, $schema = null) |
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{ |
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if (!file_exists($dir = dirname($path))) { |
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mkdir($dir, 0777, true); |
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} |
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try { |
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// Right now, it's sufficient to just write the file. In the future, |
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// this will diff existing files with the given data and only do |
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// in-place modifications where necessary. |
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$content = $this->encode($data, $schema); |
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} catch (EncodingFailedException $e) { |
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// Add the file name to the exception |
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throw new EncodingFailedException(sprintf( |
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'An error happened while encoding %s: %s', |
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$path, |
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$e->getMessage() |
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), $e->getCode(), $e); |
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} catch (ValidationFailedException $e) { |
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// Add the file name to the exception |
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throw new ValidationFailedException(sprintf( |
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"Validation failed while encoding %s:\n%s", |
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$path, |
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$e->getErrorsAsString() |
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), $e->getErrors(), $e->getCode(), $e); |
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} catch (InvalidSchemaException $e) { |
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// Add the file name to the exception |
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throw new InvalidSchemaException(sprintf( |
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'An error happened while encoding %s: %s', |
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$path, |
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$e->getMessage() |
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), $e->getCode(), $e); |
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} |
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$errorMessage = null; |
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$errorCode = 0; |
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set_error_handler(function ($errno, $errstr) use (&$errorMessage, &$errorCode) { |
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$errorMessage = $errstr; |
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$errorCode = $errno; |
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}); |
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file_put_contents($path, $content); |
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restore_error_handler(); |
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if (null !== $errorMessage) { |
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if (false !== $pos = strpos($errorMessage, '): ')) { |
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// cut "file_put_contents(%path%):" to make message more readable |
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$errorMessage = substr($errorMessage, $pos + 3); |
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} |
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throw new IOException(sprintf( |
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'Could not write %s: %s (%s)', |
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$path, |
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$errorMessage, |
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$errorCode |
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), $errorCode); |
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} |
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} |
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/** |
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* Returns the encoding of non-associative arrays. |
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* |
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* @return int One of the constants {@link JSON_OBJECT} and {@link JSON_ARRAY} |
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*/ |
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public function getArrayEncoding() |
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{ |
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return $this->arrayEncoding; |
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} |
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/** |
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* Sets the encoding of non-associative arrays. |
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* |
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* By default, non-associative arrays are decoded as JSON arrays. |
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* |
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* @param int $encoding One of the constants {@link JSON_OBJECT} and {@link JSON_ARRAY} |
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* |
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* @throws \InvalidArgumentException If the passed encoding is invalid |
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*/ |
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public function setArrayEncoding($encoding) |
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{ |
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if (self::JSON_ARRAY !== $encoding && self::JSON_OBJECT !== $encoding) { |
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throw new \InvalidArgumentException(sprintf( |
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'Expected JsonEncoder::JSON_ARRAY or JsonEncoder::JSON_OBJECT. '. |
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'Got: %s', |
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$encoding |
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)); |
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} |
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$this->arrayEncoding = $encoding; |
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} |
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/** |
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* Returns the encoding of numeric strings. |
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* |
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* @return int One of the constants {@link JSON_STRING} and {@link JSON_NUMBER} |
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*/ |
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public function getNumericEncoding() |
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{ |
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return $this->numericEncoding; |
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} |
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/** |
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* Sets the encoding of numeric strings. |
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* |
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* By default, non-associative arrays are decoded as JSON strings. |
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* |
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* @param int $encoding One of the constants {@link JSON_STRING} and {@link JSON_NUMBER} |
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* |
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* @throws \InvalidArgumentException If the passed encoding is invalid |
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*/ |
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public function setNumericEncoding($encoding) |
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{ |
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6 |
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if (self::JSON_NUMBER !== $encoding && self::JSON_STRING !== $encoding) { |
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3 |
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throw new \InvalidArgumentException(sprintf( |
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'Expected JsonEncoder::JSON_NUMBER or JsonEncoder::JSON_STRING. '. |
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'Got: %s', |
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$encoding |
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)); |
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} |
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$this->numericEncoding = $encoding; |
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} |
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/** |
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* Returns whether ampersands (&) are escaped. |
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* |
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* If `true`, ampersands will be escaped as "\u0026". |
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* |
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* By default, ampersands are not escaped. |
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* |
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* @return bool Whether ampersands are escaped |
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*/ |
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public function isAmpersandEscaped() |
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{ |
386
|
|
|
return $this->ampersandEscaped; |
387
|
|
|
} |
388
|
|
|
|
389
|
|
|
/** |
390
|
|
|
* Sets whether ampersands (&) should be escaped. |
391
|
|
|
* |
392
|
|
|
* If `true`, ampersands will be escaped as "\u0026". |
393
|
|
|
* |
394
|
|
|
* By default, ampersands are not escaped. |
395
|
|
|
* |
396
|
|
|
* @param bool $enabled Whether ampersands should be escaped |
397
|
|
|
*/ |
398
|
2 |
|
public function setEscapeAmpersand($enabled) |
399
|
|
|
{ |
400
|
2 |
|
$this->ampersandEscaped = $enabled; |
401
|
2 |
|
} |
402
|
|
|
|
403
|
|
|
/** |
404
|
|
|
* Returns whether double quotes (") are escaped. |
405
|
|
|
* |
406
|
|
|
* If `true`, double quotes will be escaped as "\u0022". |
407
|
|
|
* |
408
|
|
|
* By default, double quotes are not escaped. |
409
|
|
|
* |
410
|
|
|
* @return bool Whether double quotes are escaped |
411
|
|
|
*/ |
412
|
|
|
public function isDoubleQuoteEscaped() |
413
|
|
|
{ |
414
|
|
|
return $this->doubleQuoteEscaped; |
415
|
|
|
} |
416
|
|
|
|
417
|
|
|
/** |
418
|
|
|
* Sets whether double quotes (") should be escaped. |
419
|
|
|
* |
420
|
|
|
* If `true`, double quotes will be escaped as "\u0022". |
421
|
|
|
* |
422
|
|
|
* By default, double quotes are not escaped. |
423
|
|
|
* |
424
|
|
|
* @param bool $enabled Whether double quotes should be escaped |
425
|
|
|
*/ |
426
|
2 |
|
public function setEscapeDoubleQuote($enabled) |
427
|
|
|
{ |
428
|
2 |
|
$this->doubleQuoteEscaped = $enabled; |
429
|
2 |
|
} |
430
|
|
|
|
431
|
|
|
/** |
432
|
|
|
* Returns whether single quotes (') are escaped. |
433
|
|
|
* |
434
|
|
|
* If `true`, single quotes will be escaped as "\u0027". |
435
|
|
|
* |
436
|
|
|
* By default, single quotes are not escaped. |
437
|
|
|
* |
438
|
|
|
* @return bool Whether single quotes are escaped |
439
|
|
|
*/ |
440
|
|
|
public function isSingleQuoteEscaped() |
441
|
|
|
{ |
442
|
|
|
return $this->singleQuoteEscaped; |
443
|
|
|
} |
444
|
|
|
|
445
|
|
|
/** |
446
|
|
|
* Sets whether single quotes (") should be escaped. |
447
|
|
|
* |
448
|
|
|
* If `true`, single quotes will be escaped as "\u0027". |
449
|
|
|
* |
450
|
|
|
* By default, single quotes are not escaped. |
451
|
|
|
* |
452
|
|
|
* @param bool $enabled Whether single quotes should be escaped |
453
|
|
|
*/ |
454
|
2 |
|
public function setEscapeSingleQuote($enabled) |
455
|
|
|
{ |
456
|
2 |
|
$this->singleQuoteEscaped = $enabled; |
457
|
2 |
|
} |
458
|
|
|
|
459
|
|
|
/** |
460
|
|
|
* Returns whether forward slashes (/) are escaped. |
461
|
|
|
* |
462
|
|
|
* If `true`, forward slashes will be escaped as "\/". |
463
|
|
|
* |
464
|
|
|
* By default, forward slashes are not escaped. |
465
|
|
|
* |
466
|
|
|
* @return bool Whether forward slashes are escaped |
467
|
|
|
*/ |
468
|
|
|
public function isSlashEscaped() |
469
|
|
|
{ |
470
|
|
|
return $this->slashEscaped; |
471
|
|
|
} |
472
|
|
|
|
473
|
|
|
/** |
474
|
|
|
* Sets whether forward slashes (") should be escaped. |
475
|
|
|
* |
476
|
|
|
* If `true`, forward slashes will be escaped as "\/". |
477
|
|
|
* |
478
|
|
|
* By default, forward slashes are not escaped. |
479
|
|
|
* |
480
|
|
|
* @param bool $enabled Whether forward slashes should be escaped |
481
|
|
|
*/ |
482
|
2 |
|
public function setEscapeSlash($enabled) |
483
|
|
|
{ |
484
|
2 |
|
$this->slashEscaped = $enabled; |
485
|
2 |
|
} |
486
|
|
|
|
487
|
|
|
/** |
488
|
|
|
* Returns whether greater than/less than symbols (>, <) are escaped. |
489
|
|
|
* |
490
|
|
|
* If `true`, greater than will be escaped as "\u003E" and less than as |
491
|
|
|
* "\u003C". |
492
|
|
|
* |
493
|
|
|
* By default, greater than/less than symbols are not escaped. |
494
|
|
|
* |
495
|
|
|
* @return bool Whether greater than/less than symbols are escaped |
496
|
|
|
*/ |
497
|
|
|
public function isGtLtEscaped() |
498
|
|
|
{ |
499
|
|
|
return $this->gtLtEscaped; |
500
|
|
|
} |
501
|
|
|
|
502
|
|
|
/** |
503
|
|
|
* Sets whether greater than/less than symbols (>, <) should be escaped. |
504
|
|
|
* |
505
|
|
|
* If `true`, greater than will be escaped as "\u003E" and less than as |
506
|
|
|
* "\u003C". |
507
|
|
|
* |
508
|
|
|
* By default, greater than/less than symbols are not escaped. |
509
|
|
|
* |
510
|
|
|
* @param bool $enabled Whether greater than/less than should be escaped |
511
|
|
|
*/ |
512
|
2 |
|
public function setEscapeGtLt($enabled) |
513
|
|
|
{ |
514
|
2 |
|
$this->gtLtEscaped = $enabled; |
515
|
2 |
|
} |
516
|
|
|
|
517
|
|
|
/** |
518
|
|
|
* Returns whether unicode characters are escaped. |
519
|
|
|
* |
520
|
|
|
* If `true`, unicode characters will be escaped as hexadecimals strings. |
521
|
|
|
* For example, "ü" will be escaped as "\u00fc". |
522
|
|
|
* |
523
|
|
|
* By default, unicode characters are escaped. |
524
|
|
|
* |
525
|
|
|
* @return bool Whether unicode characters are escaped |
526
|
|
|
*/ |
527
|
|
|
public function isUnicodeEscaped() |
528
|
|
|
{ |
529
|
|
|
return $this->unicodeEscaped; |
530
|
|
|
} |
531
|
|
|
|
532
|
|
|
/** |
533
|
|
|
* Sets whether unicode characters should be escaped. |
534
|
|
|
* |
535
|
|
|
* If `true`, unicode characters will be escaped as hexadecimals strings. |
536
|
|
|
* For example, "ü" will be escaped as "\u00fc". |
537
|
|
|
* |
538
|
|
|
* By default, unicode characters are escaped. |
539
|
|
|
* |
540
|
|
|
* @param bool $enabled Whether unicode characters should be escaped |
541
|
|
|
*/ |
542
|
2 |
|
public function setEscapeUnicode($enabled) |
543
|
|
|
{ |
544
|
2 |
|
$this->unicodeEscaped = $enabled; |
545
|
2 |
|
} |
546
|
|
|
|
547
|
|
|
/** |
548
|
|
|
* Returns whether JSON strings are formatted for better readability. |
549
|
|
|
* |
550
|
|
|
* If `true`, line breaks will be added after object properties and array |
551
|
|
|
* entries. Each new nesting level will be indented by four spaces. |
552
|
|
|
* |
553
|
|
|
* By default, pretty printing is not enabled. |
554
|
|
|
* |
555
|
|
|
* @return bool Whether JSON strings are formatted |
556
|
|
|
*/ |
557
|
|
|
public function isPrettyPrinting() |
558
|
|
|
{ |
559
|
|
|
return $this->prettyPrinting; |
560
|
|
|
} |
561
|
|
|
|
562
|
|
|
/** |
563
|
|
|
* Sets whether JSON strings should be formatted for better readability. |
564
|
|
|
* |
565
|
|
|
* If `true`, line breaks will be added after object properties and array |
566
|
|
|
* entries. Each new nesting level will be indented by four spaces. |
567
|
|
|
* |
568
|
|
|
* By default, pretty printing is not enabled. |
569
|
|
|
* |
570
|
|
|
* @param bool $prettyPrinting Whether JSON strings should be formatted |
571
|
|
|
*/ |
572
|
2 |
|
public function setPrettyPrinting($prettyPrinting) |
573
|
|
|
{ |
574
|
2 |
|
$this->prettyPrinting = $prettyPrinting; |
575
|
2 |
|
} |
576
|
|
|
|
577
|
|
|
/** |
578
|
|
|
* Returns whether JSON strings are terminated with a line feed. |
579
|
|
|
* |
580
|
|
|
* By default, JSON strings are not terminated with a line feed. |
581
|
|
|
* |
582
|
|
|
* @return bool Whether JSON strings are terminated with a line feed |
583
|
|
|
*/ |
584
|
|
|
public function isTerminatedWithLineFeed() |
585
|
|
|
{ |
586
|
|
|
return $this->terminatedWithLineFeed; |
587
|
|
|
} |
588
|
|
|
|
589
|
|
|
/** |
590
|
|
|
* Sets whether JSON strings should be terminated with a line feed. |
591
|
|
|
* |
592
|
|
|
* By default, JSON strings are not terminated with a line feed. |
593
|
|
|
* |
594
|
|
|
* @param bool $enabled Whether JSON strings should be terminated with a |
595
|
|
|
* line feed |
596
|
|
|
*/ |
597
|
2 |
|
public function setTerminateWithLineFeed($enabled) |
598
|
|
|
{ |
599
|
2 |
|
$this->terminatedWithLineFeed = $enabled; |
600
|
2 |
|
} |
601
|
|
|
|
602
|
|
|
/** |
603
|
|
|
* Returns the maximum recursion depth. |
604
|
|
|
* |
605
|
|
|
* A depth of zero means that objects are not allowed. A depth of one means |
606
|
|
|
* only one level of objects or arrays is allowed. |
607
|
|
|
* |
608
|
|
|
* @return int The maximum recursion depth |
609
|
|
|
*/ |
610
|
|
|
public function getMaxDepth() |
611
|
|
|
{ |
612
|
|
|
return $this->maxDepth; |
613
|
|
|
} |
614
|
|
|
|
615
|
|
|
/** |
616
|
|
|
* Sets the maximum recursion depth. |
617
|
|
|
* |
618
|
|
|
* If the depth is exceeded during encoding, an {@link EncodingFailedException} |
619
|
|
|
* will be thrown. |
620
|
|
|
* |
621
|
|
|
* A depth of zero means that objects are not allowed. A depth of one means |
622
|
|
|
* only one level of objects or arrays is allowed. |
623
|
|
|
* |
624
|
|
|
* @param int $maxDepth The maximum recursion depth |
625
|
|
|
* |
626
|
|
|
* @throws \InvalidArgumentException If the depth is not an integer greater |
627
|
|
|
* than or equal to zero |
628
|
|
|
*/ |
629
|
6 |
View Code Duplication |
public function setMaxDepth($maxDepth) |
|
|
|
|
630
|
|
|
{ |
631
|
6 |
|
if (!is_int($maxDepth)) { |
632
|
1 |
|
throw new \InvalidArgumentException(sprintf( |
633
|
1 |
|
'The maximum depth should be an integer. Got: %s', |
634
|
1 |
|
is_object($maxDepth) ? get_class($maxDepth) : gettype($maxDepth) |
635
|
|
|
)); |
636
|
|
|
} |
637
|
|
|
|
638
|
5 |
|
if ($maxDepth < 1) { |
639
|
1 |
|
throw new \InvalidArgumentException(sprintf( |
640
|
1 |
|
'The maximum depth should 1 or greater. Got: %s', |
641
|
|
|
$maxDepth |
642
|
|
|
)); |
643
|
|
|
} |
644
|
|
|
|
645
|
4 |
|
$this->maxDepth = $maxDepth; |
646
|
4 |
|
} |
647
|
|
|
} |
648
|
|
|
|
This check looks for
@param
annotations where the type inferred by our type inference engine differs from the declared type.It makes a suggestion as to what type it considers more descriptive.
Most often this is a case of a parameter that can be null in addition to its declared types.