8398c9048d
code was modified slightly, so the code differs from the original downloadable 1.9.5 version
574 lines
18 KiB
PHP
574 lines
18 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: Encoder.php 16541 2009-07-07 06:59:03Z bkarwin $
|
|
*/
|
|
|
|
/**
|
|
* Encode PHP constructs to JSON
|
|
*
|
|
* @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
|
|
*/
|
|
class Zend_Json_Encoder
|
|
{
|
|
/**
|
|
* Whether or not to check for possible cycling
|
|
*
|
|
* @var boolean
|
|
*/
|
|
protected $_cycleCheck;
|
|
|
|
/**
|
|
* Additional options used during encoding
|
|
*
|
|
* @var array
|
|
*/
|
|
protected $_options = array();
|
|
|
|
/**
|
|
* Array of visited objects; used to prevent cycling.
|
|
*
|
|
* @var array
|
|
*/
|
|
protected $_visited = array();
|
|
|
|
/**
|
|
* Constructor
|
|
*
|
|
* @param boolean $cycleCheck Whether or not to check for recursion when encoding
|
|
* @param array $options Additional options used during encoding
|
|
* @return void
|
|
*/
|
|
protected function __construct($cycleCheck = false, $options = array())
|
|
{
|
|
$this->_cycleCheck = $cycleCheck;
|
|
$this->_options = $options;
|
|
}
|
|
|
|
/**
|
|
* Use the JSON encoding scheme for the value specified
|
|
*
|
|
* @param mixed $value The value to be encoded
|
|
* @param boolean $cycleCheck Whether or not to check for possible object recursion when encoding
|
|
* @param array $options Additional options used during encoding
|
|
* @return string The encoded value
|
|
*/
|
|
public static function encode($value, $cycleCheck = false, $options = array())
|
|
{
|
|
$encoder = new self(($cycleCheck) ? true : false, $options);
|
|
|
|
return $encoder->_encodeValue($value);
|
|
}
|
|
|
|
/**
|
|
* Recursive driver which determines the type of value to be encoded
|
|
* and then dispatches to the appropriate method. $values are either
|
|
* - objects (returns from {@link _encodeObject()})
|
|
* - arrays (returns from {@link _encodeArray()})
|
|
* - basic datums (e.g. numbers or strings) (returns from {@link _encodeDatum()})
|
|
*
|
|
* @param $value mixed The value to be encoded
|
|
* @return string Encoded value
|
|
*/
|
|
protected function _encodeValue(&$value)
|
|
{
|
|
if (is_object($value)) {
|
|
return $this->_encodeObject($value);
|
|
} else if (is_array($value)) {
|
|
return $this->_encodeArray($value);
|
|
}
|
|
|
|
return $this->_encodeDatum($value);
|
|
}
|
|
|
|
|
|
|
|
/**
|
|
* Encode an object to JSON by encoding each of the public properties
|
|
*
|
|
* A special property is added to the JSON object called '__className'
|
|
* that contains the name of the class of $value. This is used to decode
|
|
* the object on the client into a specific class.
|
|
*
|
|
* @param $value object
|
|
* @return string
|
|
* @throws Zend_Json_Exception If recursive checks are enabled and the object has been serialized previously
|
|
*/
|
|
protected function _encodeObject(&$value)
|
|
{
|
|
if ($this->_cycleCheck) {
|
|
if ($this->_wasVisited($value)) {
|
|
|
|
if (isset($this->_options['silenceCyclicalExceptions'])
|
|
&& $this->_options['silenceCyclicalExceptions']===true) {
|
|
|
|
return '"* RECURSION (' . get_class($value) . ') *"';
|
|
|
|
} else {
|
|
require_once 'Zend/Json/Exception.php';
|
|
throw new Zend_Json_Exception(
|
|
'Cycles not supported in JSON encoding, cycle introduced by '
|
|
. 'class "' . get_class($value) . '"'
|
|
);
|
|
}
|
|
}
|
|
|
|
$this->_visited[] = $value;
|
|
}
|
|
|
|
$props = '';
|
|
|
|
if ($value instanceof Iterator) {
|
|
$propCollection = $value;
|
|
} else {
|
|
$propCollection = get_object_vars($value);
|
|
}
|
|
|
|
foreach ($propCollection as $name => $propValue) {
|
|
if (isset($propValue)) {
|
|
$props .= ','
|
|
. $this->_encodeValue($name)
|
|
. ':'
|
|
. $this->_encodeValue($propValue);
|
|
}
|
|
}
|
|
|
|
return '{"__className":"' . get_class($value) . '"'
|
|
. $props . '}';
|
|
}
|
|
|
|
|
|
/**
|
|
* Determine if an object has been serialized already
|
|
*
|
|
* @param mixed $value
|
|
* @return boolean
|
|
*/
|
|
protected function _wasVisited(&$value)
|
|
{
|
|
if (in_array($value, $this->_visited, true)) {
|
|
return true;
|
|
}
|
|
|
|
return false;
|
|
}
|
|
|
|
|
|
/**
|
|
* JSON encode an array value
|
|
*
|
|
* Recursively encodes each value of an array and returns a JSON encoded
|
|
* array string.
|
|
*
|
|
* Arrays are defined as integer-indexed arrays starting at index 0, where
|
|
* the last index is (count($array) -1); any deviation from that is
|
|
* considered an associative array, and will be encoded as such.
|
|
*
|
|
* @param $array array
|
|
* @return string
|
|
*/
|
|
protected function _encodeArray(&$array)
|
|
{
|
|
$tmpArray = array();
|
|
|
|
// Check for associative array
|
|
if (!empty($array) && (array_keys($array) !== range(0, count($array) - 1))) {
|
|
// Associative array
|
|
$result = '{';
|
|
foreach ($array as $key => $value) {
|
|
$key = (string) $key;
|
|
$tmpArray[] = $this->_encodeString($key)
|
|
. ':'
|
|
. $this->_encodeValue($value);
|
|
}
|
|
$result .= implode(',', $tmpArray);
|
|
$result .= '}';
|
|
} else {
|
|
// Indexed array
|
|
$result = '[';
|
|
$length = count($array);
|
|
for ($i = 0; $i < $length; $i++) {
|
|
$tmpArray[] = $this->_encodeValue($array[$i]);
|
|
}
|
|
$result .= implode(',', $tmpArray);
|
|
$result .= ']';
|
|
}
|
|
|
|
return $result;
|
|
}
|
|
|
|
|
|
/**
|
|
* JSON encode a basic data type (string, number, boolean, null)
|
|
*
|
|
* If value type is not a string, number, boolean, or null, the string
|
|
* 'null' is returned.
|
|
*
|
|
* @param $value mixed
|
|
* @return string
|
|
*/
|
|
protected function _encodeDatum(&$value)
|
|
{
|
|
$result = 'null';
|
|
|
|
if (is_int($value) || is_float($value)) {
|
|
$result = (string) $value;
|
|
$result = str_replace(",", ".", $result);
|
|
} elseif (is_string($value)) {
|
|
$result = $this->_encodeString($value);
|
|
} elseif (is_bool($value)) {
|
|
$result = $value ? 'true' : 'false';
|
|
}
|
|
|
|
return $result;
|
|
}
|
|
|
|
|
|
/**
|
|
* JSON encode a string value by escaping characters as necessary
|
|
*
|
|
* @param $value string
|
|
* @return string
|
|
*/
|
|
protected function _encodeString(&$string)
|
|
{
|
|
// Escape these characters with a backslash:
|
|
// " \ / \n \r \t \b \f
|
|
$search = array('\\', "\n", "\t", "\r", "\b", "\f", '"');
|
|
$replace = array('\\\\', '\\n', '\\t', '\\r', '\\b', '\\f', '\"');
|
|
$string = str_replace($search, $replace, $string);
|
|
|
|
// Escape certain ASCII characters:
|
|
// 0x08 => \b
|
|
// 0x0c => \f
|
|
$string = str_replace(array(chr(0x08), chr(0x0C)), array('\b', '\f'), $string);
|
|
$string = self::encodeUnicodeString($string);
|
|
|
|
return '"' . $string . '"';
|
|
}
|
|
|
|
|
|
/**
|
|
* Encode the constants associated with the ReflectionClass
|
|
* parameter. The encoding format is based on the class2 format
|
|
*
|
|
* @param $cls ReflectionClass
|
|
* @return string Encoded constant block in class2 format
|
|
*/
|
|
private static function _encodeConstants(ReflectionClass $cls)
|
|
{
|
|
$result = "constants : {";
|
|
$constants = $cls->getConstants();
|
|
|
|
$tmpArray = array();
|
|
if (!empty($constants)) {
|
|
foreach ($constants as $key => $value) {
|
|
$tmpArray[] = "$key: " . self::encode($value);
|
|
}
|
|
|
|
$result .= implode(', ', $tmpArray);
|
|
}
|
|
|
|
return $result . "}";
|
|
}
|
|
|
|
|
|
/**
|
|
* Encode the public methods of the ReflectionClass in the
|
|
* class2 format
|
|
*
|
|
* @param $cls ReflectionClass
|
|
* @return string Encoded method fragment
|
|
*
|
|
*/
|
|
private static function _encodeMethods(ReflectionClass $cls)
|
|
{
|
|
$methods = $cls->getMethods();
|
|
$result = 'methods:{';
|
|
|
|
$started = false;
|
|
foreach ($methods as $method) {
|
|
if (! $method->isPublic() || !$method->isUserDefined()) {
|
|
continue;
|
|
}
|
|
|
|
if ($started) {
|
|
$result .= ',';
|
|
}
|
|
$started = true;
|
|
|
|
$result .= '' . $method->getName(). ':function(';
|
|
|
|
if ('__construct' != $method->getName()) {
|
|
$parameters = $method->getParameters();
|
|
$paramCount = count($parameters);
|
|
$argsStarted = false;
|
|
|
|
$argNames = "var argNames=[";
|
|
foreach ($parameters as $param) {
|
|
if ($argsStarted) {
|
|
$result .= ',';
|
|
}
|
|
|
|
$result .= $param->getName();
|
|
|
|
if ($argsStarted) {
|
|
$argNames .= ',';
|
|
}
|
|
|
|
$argNames .= '"' . $param->getName() . '"';
|
|
|
|
$argsStarted = true;
|
|
}
|
|
$argNames .= "];";
|
|
|
|
$result .= "){"
|
|
. $argNames
|
|
. 'var result = ZAjaxEngine.invokeRemoteMethod('
|
|
. "this, '" . $method->getName()
|
|
. "',argNames,arguments);"
|
|
. 'return(result);}';
|
|
} else {
|
|
$result .= "){}";
|
|
}
|
|
}
|
|
|
|
return $result . "}";
|
|
}
|
|
|
|
|
|
/**
|
|
* Encode the public properties of the ReflectionClass in the class2
|
|
* format.
|
|
*
|
|
* @param $cls ReflectionClass
|
|
* @return string Encode properties list
|
|
*
|
|
*/
|
|
private static function _encodeVariables(ReflectionClass $cls)
|
|
{
|
|
$properties = $cls->getProperties();
|
|
$propValues = get_class_vars($cls->getName());
|
|
$result = "variables:{";
|
|
$cnt = 0;
|
|
|
|
$tmpArray = array();
|
|
foreach ($properties as $prop) {
|
|
if (! $prop->isPublic()) {
|
|
continue;
|
|
}
|
|
|
|
$tmpArray[] = $prop->getName()
|
|
. ':'
|
|
. self::encode($propValues[$prop->getName()]);
|
|
}
|
|
$result .= implode(',', $tmpArray);
|
|
|
|
return $result . "}";
|
|
}
|
|
|
|
/**
|
|
* Encodes the given $className into the class2 model of encoding PHP
|
|
* classes into JavaScript class2 classes.
|
|
* NOTE: Currently only public methods and variables are proxied onto
|
|
* the client machine
|
|
*
|
|
* @param $className string The name of the class, the class must be
|
|
* instantiable using a null constructor
|
|
* @param $package string Optional package name appended to JavaScript
|
|
* proxy class name
|
|
* @return string The class2 (JavaScript) encoding of the class
|
|
* @throws Zend_Json_Exception
|
|
*/
|
|
public static function encodeClass($className, $package = '')
|
|
{
|
|
$cls = new ReflectionClass($className);
|
|
if (! $cls->isInstantiable()) {
|
|
require_once 'Zend/Json/Exception.php';
|
|
throw new Zend_Json_Exception("$className must be instantiable");
|
|
}
|
|
|
|
return "Class.create('$package$className',{"
|
|
. self::_encodeConstants($cls) .","
|
|
. self::_encodeMethods($cls) .","
|
|
. self::_encodeVariables($cls) .'});';
|
|
}
|
|
|
|
|
|
/**
|
|
* Encode several classes at once
|
|
*
|
|
* Returns JSON encoded classes, using {@link encodeClass()}.
|
|
*
|
|
* @param array $classNames
|
|
* @param string $package
|
|
* @return string
|
|
*/
|
|
public static function encodeClasses(array $classNames, $package = '')
|
|
{
|
|
$result = '';
|
|
foreach ($classNames as $className) {
|
|
$result .= self::encodeClass($className, $package);
|
|
}
|
|
|
|
return $result;
|
|
}
|
|
|
|
/**
|
|
* Encode Unicode Characters to \u0000 ASCII syntax.
|
|
*
|
|
* This algorithm was originally developed for the
|
|
* Solar Framework by Paul M. Jones
|
|
*
|
|
* @link http://solarphp.com/
|
|
* @link http://svn.solarphp.com/core/trunk/Solar/Json.php
|
|
* @param string $value
|
|
* @return string
|
|
*/
|
|
public static function encodeUnicodeString($value)
|
|
{
|
|
$strlen_var = strlen($value);
|
|
$ascii = "";
|
|
|
|
/**
|
|
* Iterate over every character in the string,
|
|
* escaping with a slash or encoding to UTF-8 where necessary
|
|
*/
|
|
for($i = 0; $i < $strlen_var; $i++) {
|
|
$ord_var_c = ord($value[$i]);
|
|
|
|
switch (true) {
|
|
case (($ord_var_c >= 0x20) && ($ord_var_c <= 0x7F)):
|
|
// characters U-00000000 - U-0000007F (same as ASCII)
|
|
$ascii .= $value[$i];
|
|
break;
|
|
|
|
case (($ord_var_c & 0xE0) == 0xC0):
|
|
// characters U-00000080 - U-000007FF, mask 110XXXXX
|
|
// see http://www.cl.cam.ac.uk/~mgk25/unicode.html#utf-8
|
|
$char = pack('C*', $ord_var_c, ord($value[$i + 1]));
|
|
$i += 1;
|
|
$utf16 = self::_utf82utf16($char);
|
|
$ascii .= sprintf('\u%04s', bin2hex($utf16));
|
|
break;
|
|
|
|
case (($ord_var_c & 0xF0) == 0xE0):
|
|
// characters U-00000800 - U-0000FFFF, mask 1110XXXX
|
|
// see http://www.cl.cam.ac.uk/~mgk25/unicode.html#utf-8
|
|
$char = pack('C*', $ord_var_c,
|
|
ord($value[$i + 1]),
|
|
ord($value[$i + 2]));
|
|
$i += 2;
|
|
$utf16 = self::_utf82utf16($char);
|
|
$ascii .= sprintf('\u%04s', bin2hex($utf16));
|
|
break;
|
|
|
|
case (($ord_var_c & 0xF8) == 0xF0):
|
|
// characters U-00010000 - U-001FFFFF, mask 11110XXX
|
|
// see http://www.cl.cam.ac.uk/~mgk25/unicode.html#utf-8
|
|
$char = pack('C*', $ord_var_c,
|
|
ord($value[$i + 1]),
|
|
ord($value[$i + 2]),
|
|
ord($value[$i + 3]));
|
|
$i += 3;
|
|
$utf16 = self::_utf82utf16($char);
|
|
$ascii .= sprintf('\u%04s', bin2hex($utf16));
|
|
break;
|
|
|
|
case (($ord_var_c & 0xFC) == 0xF8):
|
|
// characters U-00200000 - U-03FFFFFF, mask 111110XX
|
|
// see http://www.cl.cam.ac.uk/~mgk25/unicode.html#utf-8
|
|
$char = pack('C*', $ord_var_c,
|
|
ord($value[$i + 1]),
|
|
ord($value[$i + 2]),
|
|
ord($value[$i + 3]),
|
|
ord($value[$i + 4]));
|
|
$i += 4;
|
|
$utf16 = self::_utf82utf16($char);
|
|
$ascii .= sprintf('\u%04s', bin2hex($utf16));
|
|
break;
|
|
|
|
case (($ord_var_c & 0xFE) == 0xFC):
|
|
// characters U-04000000 - U-7FFFFFFF, mask 1111110X
|
|
// see http://www.cl.cam.ac.uk/~mgk25/unicode.html#utf-8
|
|
$char = pack('C*', $ord_var_c,
|
|
ord($value[$i + 1]),
|
|
ord($value[$i + 2]),
|
|
ord($value[$i + 3]),
|
|
ord($value[$i + 4]),
|
|
ord($value[$i + 5]));
|
|
$i += 5;
|
|
$utf16 = self::_utf82utf16($char);
|
|
$ascii .= sprintf('\u%04s', bin2hex($utf16));
|
|
break;
|
|
}
|
|
}
|
|
|
|
return $ascii;
|
|
}
|
|
|
|
/**
|
|
* Convert a string from one UTF-8 char to one UTF-16 char.
|
|
*
|
|
* Normally should be handled by mb_convert_encoding, but
|
|
* provides a slower PHP-only method for installations
|
|
* that lack the multibye string extension.
|
|
*
|
|
* This method is from the Solar Framework by Paul M. Jones
|
|
*
|
|
* @link http://solarphp.com
|
|
* @param string $utf8 UTF-8 character
|
|
* @return string UTF-16 character
|
|
*/
|
|
protected static function _utf82utf16($utf8)
|
|
{
|
|
// Check for mb extension otherwise do by hand.
|
|
if( function_exists('mb_convert_encoding') ) {
|
|
return mb_convert_encoding($utf8, 'UTF-16', 'UTF-8');
|
|
}
|
|
|
|
switch (strlen($utf8)) {
|
|
case 1:
|
|
// this case should never be reached, because we are in ASCII range
|
|
// see: http://www.cl.cam.ac.uk/~mgk25/unicode.html#utf-8
|
|
return $utf8;
|
|
|
|
case 2:
|
|
// return a UTF-16 character from a 2-byte UTF-8 char
|
|
// see: http://www.cl.cam.ac.uk/~mgk25/unicode.html#utf-8
|
|
return chr(0x07 & (ord($utf8{0}) >> 2))
|
|
. chr((0xC0 & (ord($utf8{0}) << 6))
|
|
| (0x3F & ord($utf8{1})));
|
|
|
|
case 3:
|
|
// return a UTF-16 character from a 3-byte UTF-8 char
|
|
// see: http://www.cl.cam.ac.uk/~mgk25/unicode.html#utf-8
|
|
return chr((0xF0 & (ord($utf8{0}) << 4))
|
|
| (0x0F & (ord($utf8{1}) >> 2)))
|
|
. chr((0xC0 & (ord($utf8{1}) << 6))
|
|
| (0x7F & ord($utf8{2})));
|
|
}
|
|
|
|
// ignoring UTF-32 for now, sorry
|
|
return '';
|
|
}
|
|
}
|
|
|