340 lines
14 KiB
PHP
340 lines
14 KiB
PHP
|
<?php
|
||
|
|
/**
|
||
|
|
* Zend Framework
|
||
|
|
*
|
||
|
|
* LICENSE
|
||
|
|
*
|
||
|
|
* This source file is subject to the new BSD license that is bundled
|
||
|
|
* with this package in the file LICENSE.txt.
|
||
|
|
* It is also available through the world-wide-web at this URL:
|
||
|
|
* http://framework.zend.com/license/new-bsd
|
||
|
|
* If you did not receive a copy of the license and are unable to
|
||
|
|
* obtain it through the world-wide-web, please send an email
|
||
|
|
* to license@zend.com so we can send you a copy immediately.
|
||
|
|
*
|
||
|
|
* @category Zend
|
||
|
|
* @package Zend_Json
|
||
|
|
* @copyright Copyright (c) 2005-2009 Zend Technologies USA Inc. (http://www.zend.com)
|
||
|
|
* @license http://framework.zend.com/license/new-bsd New BSD License
|
||
|
|
* @version $Id: Json.php 16541 2009-07-07 06:59:03Z bkarwin $
|
||
|
|
*/
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Zend_Json_Expr.
|
||
|
|
*
|
||
|
|
* @see Zend_Json_Expr
|
||
|
|
*/
|
||
|
|
require_once 'Zend/Json/Expr.php';
|
||
|
|
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Class for encoding to and decoding from JSON.
|
||
|
|
*
|
||
|
|
* @category Zend
|
||
|
|
* @package Zend_Json
|
||
|
|
* @uses Zend_Json_Expr
|
||
|
|
* @copyright Copyright (c) 2005-2009 Zend Technologies USA Inc. (http://www.zend.com)
|
||
|
|
* @license http://framework.zend.com/license/new-bsd New BSD License
|
||
|
|
*/
|
||
|
|
class Zend_Json
|
||
|
|
{
|
||
|
|
/**
|
||
|
|
* How objects should be encoded -- arrays or as StdClass. TYPE_ARRAY is 1
|
||
|
|
* so that it is a boolean true value, allowing it to be used with
|
||
|
|
* ext/json's functions.
|
||
|
|
*/
|
||
|
|
const TYPE_ARRAY = 1;
|
||
|
|
const TYPE_OBJECT = 0;
|
||
|
|
|
||
|
|
/**
|
||
|
|
* To check the allowed nesting depth of the XML tree during xml2json conversion.
|
||
|
|
*
|
||
|
|
* @var int
|
||
|
|
*/
|
||
|
|
public static $maxRecursionDepthAllowed=25;
|
||
|
|
|
||
|
|
/**
|
||
|
|
* @var bool
|
||
|
|
*/
|
||
|
|
public static $useBuiltinEncoderDecoder = false;
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Decodes the given $encodedValue string which is
|
||
|
|
* encoded in the JSON format
|
||
|
|
*
|
||
|
|
* Uses ext/json's json_decode if available.
|
||
|
|
*
|
||
|
|
* @param string $encodedValue Encoded in JSON format
|
||
|
|
* @param int $objectDecodeType Optional; flag indicating how to decode
|
||
|
|
* objects. See {@link Zend_Json_Decoder::decode()} for details.
|
||
|
|
* @return mixed
|
||
|
|
*/
|
||
|
|
public static function decode($encodedValue, $objectDecodeType = Zend_Json::TYPE_ARRAY)
|
||
|
|
{
|
||
|
|
if (function_exists('json_decode') && self::$useBuiltinEncoderDecoder !== true) {
|
||
|
|
return json_decode($encodedValue, $objectDecodeType);
|
||
|
|
}
|
||
|
|
|
||
|
|
require_once 'Zend/Json/Decoder.php';
|
||
|
|
return Zend_Json_Decoder::decode($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.
|
||
|
|
}
|