diff -r 5b37998e522e -r 162c1de6545a web/lib/Zend/Json.php --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/web/lib/Zend/Json.php Fri Mar 11 15:05:35 2011 +0100 @@ -0,0 +1,406 @@ += 5.3 + } elseif (($jsonLastErr = json_last_error()) != JSON_ERROR_NONE) { + require_once 'Zend/Json/Exception.php'; + switch ($jsonLastErr) { + case JSON_ERROR_DEPTH: + throw new Zend_Json_Exception('Decoding failed: Maximum stack depth exceeded'); + case JSON_ERROR_CTRL_CHAR: + throw new Zend_Json_Exception('Decoding failed: Unexpected control character found'); + case JSON_ERROR_SYNTAX: + throw new Zend_Json_Exception('Decoding failed: Syntax error'); + default: + throw new Zend_Json_Exception('Decoding failed'); + } + } + + return $decode; + } + + require_once 'Zend/Json/Decoder.php'; + return Zend_Json_Decoder::decode($encodedValue, $objectDecodeType); + } + + /** + * Encode the mixed $valueToEncode into the JSON format + * + * Encodes using ext/json's json_encode() if available. + * + * NOTE: Object should not contain cycles; the JSON format + * does not allow object reference. + * + * NOTE: Only public variables will be encoded + * + * NOTE: Encoding native javascript expressions are possible using Zend_Json_Expr. + * You can enable this by setting $options['enableJsonExprFinder'] = true + * + * @see Zend_Json_Expr + * + * @param mixed $valueToEncode + * @param boolean $cycleCheck Optional; whether or not to check for object recursion; off by default + * @param array $options Additional options used during encoding + * @return string JSON encoded object + */ + public static function encode($valueToEncode, $cycleCheck = false, $options = array()) + { + if (is_object($valueToEncode) && method_exists($valueToEncode, 'toJson')) { + return $valueToEncode->toJson(); + } + + // Pre-encoding look for Zend_Json_Expr objects and replacing by tmp ids + $javascriptExpressions = array(); + if(isset($options['enableJsonExprFinder']) + && ($options['enableJsonExprFinder'] == true) + ) { + /** + * @see Zend_Json_Encoder + */ + require_once "Zend/Json/Encoder.php"; + $valueToEncode = self::_recursiveJsonExprFinder($valueToEncode, $javascriptExpressions); + } + + // Encoding + if (function_exists('json_encode') && self::$useBuiltinEncoderDecoder !== true) { + $encodedResult = json_encode($valueToEncode); + } else { + require_once 'Zend/Json/Encoder.php'; + $encodedResult = Zend_Json_Encoder::encode($valueToEncode, $cycleCheck, $options); + } + + //only do post-proccessing to revert back the Zend_Json_Expr if any. + if (count($javascriptExpressions) > 0) { + $count = count($javascriptExpressions); + for($i = 0; $i < $count; $i++) { + $magicKey = $javascriptExpressions[$i]['magicKey']; + $value = $javascriptExpressions[$i]['value']; + + $encodedResult = str_replace( + //instead of replacing "key:magicKey", we replace directly magicKey by value because "key" never changes. + '"' . $magicKey . '"', + $value, + $encodedResult + ); + } + } + + return $encodedResult; + } + + /** + * Check & Replace Zend_Json_Expr for tmp ids in the valueToEncode + * + * Check if the value is a Zend_Json_Expr, and if replace its value + * with a magic key and save the javascript expression in an array. + * + * NOTE this method is recursive. + * + * NOTE: This method is used internally by the encode method. + * + * @see encode + * @param mixed $valueToCheck a string - object property to be encoded + * @return void + */ + protected static function _recursiveJsonExprFinder( + &$value, array &$javascriptExpressions, $currentKey = null + ) { + if ($value instanceof Zend_Json_Expr) { + // TODO: Optimize with ascii keys, if performance is bad + $magicKey = "____" . $currentKey . "_" . (count($javascriptExpressions)); + $javascriptExpressions[] = array( + + //if currentKey is integer, encodeUnicodeString call is not required. + "magicKey" => (is_int($currentKey)) ? $magicKey : Zend_Json_Encoder::encodeUnicodeString($magicKey), + "value" => $value->__toString(), + ); + $value = $magicKey; + } elseif (is_array($value)) { + foreach ($value as $k => $v) { + $value[$k] = self::_recursiveJsonExprFinder($value[$k], $javascriptExpressions, $k); + } + } elseif (is_object($value)) { + foreach ($value as $k => $v) { + $value->$k = self::_recursiveJsonExprFinder($value->$k, $javascriptExpressions, $k); + } + } + return $value; + } + + /** + * fromXml - Converts XML to JSON + * + * Converts a XML formatted string into a JSON formatted string. + * The value returned will be a string in JSON format. + * + * The caller of this function needs to provide only the first parameter, + * which is an XML formatted String. The second parameter is optional, which + * lets the user to select if the XML attributes in the input XML string + * should be included or ignored in xml2json conversion. + * + * This function converts the XML formatted string into a PHP array by + * calling a recursive (protected static) function in this class. Then, it + * converts that PHP array into JSON by calling the "encode" static funcion. + * + * Throws a Zend_Json_Exception if the input not a XML formatted string. + * NOTE: Encoding native javascript expressions via Zend_Json_Expr is not possible. + * + * @static + * @access public + * @param string $xmlStringContents XML String to be converted + * @param boolean $ignoreXmlAttributes Include or exclude XML attributes in + * the xml2json conversion process. + * @return mixed - JSON formatted string on success + * @throws Zend_Json_Exception + */ + public static function fromXml ($xmlStringContents, $ignoreXmlAttributes=true) { + // Load the XML formatted string into a Simple XML Element object. + $simpleXmlElementObject = simplexml_load_string($xmlStringContents); + + // If it is not a valid XML content, throw an exception. + if ($simpleXmlElementObject == null) { + require_once 'Zend/Json/Exception.php'; + throw new Zend_Json_Exception('Function fromXml was called with an invalid XML formatted string.'); + } // End of if ($simpleXmlElementObject == null) + + $resultArray = null; + + // Call the recursive function to convert the XML into a PHP array. + $resultArray = self::_processXml($simpleXmlElementObject, $ignoreXmlAttributes); + + // Convert the PHP array to JSON using Zend_Json encode method. + // It is just that simple. + $jsonStringOutput = self::encode($resultArray); + return($jsonStringOutput); + } // End of function fromXml. + + /** + * _processXml - Contains the logic for xml2json + * + * The logic in this function is a recursive one. + * + * The main caller of this function (i.e. fromXml) needs to provide + * only the first two parameters i.e. the SimpleXMLElement object and + * the flag for ignoring or not ignoring XML attributes. The third parameter + * will be used internally within this function during the recursive calls. + * + * This function converts the SimpleXMLElement object into a PHP array by + * calling a recursive (protected static) function in this class. Once all + * the XML elements are stored in the PHP array, it is returned to the caller. + * + * Throws a Zend_Json_Exception if the XML tree is deeper than the allowed limit. + * + * @static + * @access protected + * @param SimpleXMLElement $simpleXmlElementObject XML element to be converted + * @param boolean $ignoreXmlAttributes Include or exclude XML attributes in + * the xml2json conversion process. + * @param int $recursionDepth Current recursion depth of this function + * @return mixed - On success, a PHP associative array of traversed XML elements + * @throws Zend_Json_Exception + */ + protected static function _processXml ($simpleXmlElementObject, $ignoreXmlAttributes, $recursionDepth=0) { + // Keep an eye on how deeply we are involved in recursion. + if ($recursionDepth > self::$maxRecursionDepthAllowed) { + // XML tree is too deep. Exit now by throwing an exception. + require_once 'Zend/Json/Exception.php'; + throw new Zend_Json_Exception( + "Function _processXml exceeded the allowed recursion depth of " . + self::$maxRecursionDepthAllowed); + } // End of if ($recursionDepth > self::$maxRecursionDepthAllowed) + + if ($recursionDepth == 0) { + // Store the original SimpleXmlElementObject sent by the caller. + // We will need it at the very end when we return from here for good. + $callerProvidedSimpleXmlElementObject = $simpleXmlElementObject; + } // End of if ($recursionDepth == 0) + + if ($simpleXmlElementObject instanceof SimpleXMLElement) { + // Get a copy of the simpleXmlElementObject + $copyOfSimpleXmlElementObject = $simpleXmlElementObject; + // Get the object variables in the SimpleXmlElement object for us to iterate. + $simpleXmlElementObject = get_object_vars($simpleXmlElementObject); + } // End of if (get_class($simpleXmlElementObject) == "SimpleXMLElement") + + // It needs to be an array of object variables. + if (is_array($simpleXmlElementObject)) { + // Initialize a result array. + $resultArray = array(); + // Is the input array size 0? Then, we reached the rare CDATA text if any. + if (count($simpleXmlElementObject) <= 0) { + // Let us return the lonely CDATA. It could even be + // an empty element or just filled with whitespaces. + return (trim(strval($copyOfSimpleXmlElementObject))); + } // End of if (count($simpleXmlElementObject) <= 0) + + // Let us walk through the child elements now. + foreach($simpleXmlElementObject as $key=>$value) { + // Check if we need to ignore the XML attributes. + // If yes, you can skip processing the XML attributes. + // Otherwise, add the XML attributes to the result array. + if(($ignoreXmlAttributes == true) && (is_string($key)) && ($key == "@attributes")) { + continue; + } // End of if(($ignoreXmlAttributes == true) && ($key == "@attributes")) + + // Let us recursively process the current XML element we just visited. + // Increase the recursion depth by one. + $recursionDepth++; + $resultArray[$key] = self::_processXml ($value, $ignoreXmlAttributes, $recursionDepth); + + // Decrease the recursion depth by one. + $recursionDepth--; + } // End of foreach($simpleXmlElementObject as $key=>$value) { + + if ($recursionDepth == 0) { + // That is it. We are heading to the exit now. + // Set the XML root element name as the root [top-level] key of + // the associative array that we are going to return to the original + // caller of this recursive function. + $tempArray = $resultArray; + $resultArray = array(); + $resultArray[$callerProvidedSimpleXmlElementObject->getName()] = $tempArray; + } // End of if ($recursionDepth == 0) + + return($resultArray); + } else { + // We are now looking at either the XML attribute text or + // the text between the XML tags. + + // In order to allow Zend_Json_Expr from xml, we check if the node + // matchs the pattern that try to detect if it is a new Zend_Json_Expr + // if it matches, we return a new Zend_Json_Expr instead of a text node + $pattern = '/^[\s]*new Zend_Json_Expr[\s]*\([\s]*[\"\']{1}(.*)[\"\']{1}[\s]*\)[\s]*$/'; + $matchings = array(); + $match = preg_match ($pattern, $simpleXmlElementObject, $matchings); + if ($match) { + return new Zend_Json_Expr($matchings[1]); + } else { + return (trim(strval($simpleXmlElementObject))); + } + + } // End of if (is_array($simpleXmlElementObject)) + } // End of function _processXml. + + /** + * Pretty-print JSON string + * + * Use 'indent' option to select indentation string - by default it's a tab + * + * @param string $json Original JSON string + * @param array $options Encoding options + * @return string + */ + public static function prettyPrint($json, $options = array()) + { + $tokens = preg_split('|([\{\}\]\[,])|', $json, -1, PREG_SPLIT_DELIM_CAPTURE); + $result = ""; + $indent = 0; + + $ind = "\t"; + if(isset($options['indent'])) { + $ind = $options['indent']; + } + + foreach($tokens as $token) { + if($token == "") continue; + + $prefix = str_repeat($ind, $indent); + if($token == "{" || $token == "[") { + $indent++; + if($result != "" && $result[strlen($result)-1] == "\n") { + $result .= $prefix; + } + $result .= "$token\n"; + } else if($token == "}" || $token == "]") { + $indent--; + $prefix = str_repeat($ind, $indent); + $result .= "\n$prefix$token"; + } else if($token == ",") { + $result .= "$token\n"; + } else { + $result .= $prefix.$token; + } + } + return $result; + } +}