<?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_Amf
* @subpackage Parse_Amf3
* @copyright Copyright (c) 2005-2008 Zend Technologies USA Inc. (http://www.zend.com)
* @license http://framework.zend.com/license/new-bsd New BSD License
*/
/** Zend_Amf_Parse_Serializer */
require_once 'Zend/Amf/Parse/Serializer.php';
/** Zend_Amf_Parse_TypeLoader */
require_once 'Zend/Amf/Parse/TypeLoader.php';
/**
* Detect PHP object type and convert it to a corresponding AMF3 object type
*
* @package Zend_Amf
* @subpackage Parse_Amf3
* @copyright Copyright (c) 2005-2008 Zend Technologies USA Inc. (http://www.zend.com)
* @license http://framework.zend.com/license/new-bsd New BSD License
*/
class Zend_Amf_Parse_Amf3_Serializer extends Zend_Amf_Parse_Serializer
{
/**
* Serialize PHP types to AMF3 and write to stream
*
* Checks to see if the type was declared and then either
* auto negotiates the type or use the user defined markerType to
* serialize the data from php back to AMF3
*
* @param mixed $content
* @param int $markerType
* @return void
*/
public function writeTypeMarker($data, $markerType=null)
{
if (null !== $markerType) {
// Write the Type Marker to denote the following action script data type
$this->_stream->writeByte($markerType);
switch ($markerType) {
case Zend_Amf_Constants::AMF3_NULL:
break;
case Zend_Amf_Constants::AMF3_BOOLEAN_FALSE:
break;
case Zend_Amf_Constants::AMF3_BOOLEAN_TRUE:
break;
case Zend_Amf_Constants::AMF3_INTEGER:
$this->writeInteger($data);
break;
case Zend_Amf_Constants::AMF3_NUMBER:
$this->_stream->writeDouble($data);
break;
case Zend_Amf_Constants::AMF3_STRING:
$this->writeString($data);
break;
case Zend_Amf_Constants::AMF3_DATE:
$this->writeDate($data);
break;
case Zend_Amf_Constants::AMF3_ARRAY:
$this->writeArray($data);
break;
case Zend_Amf_Constants::AMF3_OBJECT:
$this->writeObject($data);
break;
case Zend_Amf_Constants::AMF3_BYTEARRAY:
$this->writeString($data);
break;
default:
require_once 'Zend/Amf/Exception.php';
throw new Zend_Amf_Exception('Unknown Type Marker: ' . $markerType);
}
} else {
// Detect Type Marker
switch (true) {
case (null === $data):
$markerType = Zend_Amf_Constants::AMF3_NULL;
break;
case (is_bool($data)):
if ($data){
$markerType = Zend_Amf_Constants::AMF3_BOOLEAN_TRUE;
} else {
$markerType = Zend_Amf_Constants::AMF3_BOOLEAN_FALSE;
}
break;
case (is_int($data)):
if (($data > 0xFFFFFFF) || ($data < -268435456)) {
$markerType = Zend_Amf_Constants::AMF3_NUMBER;
} else {
$markerType = Zend_Amf_Constants::AMF3_INTEGER;
}
break;
case (is_float($data)):
$markerType = Zend_Amf_Constants::AMF3_NUMBER;
break;
case (is_string($data)):
$markerType = Zend_Amf_Constants::AMF3_STRING;
break;
case (is_array($data)):
$markerType = Zend_Amf_Constants::AMF3_ARRAY;
break;
case (is_object($data)):
// Handle object types.
if (($data instanceof DateTime) || ($data instanceof Zend_Date)) {
$markerType = Zend_Amf_Constants::AMF3_DATE;
} else if ($data instanceof Zend_Amf_Value_ByteArray) {
$markerType = Zend_Amf_Constants::AMF3_BYTEARRAY;
} else {
$markerType = Zend_Amf_Constants::AMF3_OBJECT;
}
break;
default:
require_once 'Zend/Amf/Exception.php';
throw new Zend_Amf_Exception('Unsupported data type: ' . gettype($data));
}
$this->writeTypeMarker($data, $markerType);
}
}
/**
* Write an AMF3 integer
*
* @param int|float $data
* @return Zend_Amf_Parse_Amf3_Serializer
*/
public function writeInteger($int)
{
if (($int & 0xffffff80) == 0) {
$this->_stream->writeByte($int & 0x7f);
return $this;
}
if (($int & 0xffffc000) == 0 ) {
$this->_stream->writeByte(($int >> 7 ) | 0x80);
$this->_stream->writeByte($int & 0x7f);
return $this;
}
if (($int & 0xffe00000) == 0) {
$this->_stream->writeByte(($int >> 14 ) | 0x80);
$this->_stream->writeByte(($int >> 7 ) | 0x80);
$this->_stream->writeByte($int & 0x7f);
return $this;
}
$this->_stream->writeByte(($int >> 22 ) | 0x80);
$this->_stream->writeByte(($int >> 15 ) | 0x80);
$this->_stream->writeByte(($int >> 8 ) | 0x80);
$this->_stream->writeByte($int & 0xff);
return $this;
}
/**
* Send string to output stream
*
* @param string $string
* @return Zend_Amf_Parse_Amf3_Serializer
*/
public function writeString($string)
{
$ref = strlen($string) << 1 | 0x01;
$this->writeInteger($ref);
$this->_stream->writeBytes($string);
return $this;
}
/**
* Convert DateTime/Zend_Date to AMF date
*
* @param DateTime|Zend_Date $date
* @return Zend_Amf_Parse_Amf3_Serializer
*/
public function writeDate($date)
{
if ($date instanceof DateTime) {
$dateString = $date->format('U') * 1000;
} elseif ($date instanceof Zend_Date) {
$dateString = $date->toString('U') * 1000;
} else {
require_once 'Zend/Amf/Exception.php';
throw new Zend_Amf_Exception('Invalid date specified; must be a string DateTime or Zend_Date object');
}
$this->writeInteger(0x01);
// write time to stream minus milliseconds
$this->_stream->writeDouble($dateString);
return $this;
}
/**
* Write a PHP array back to the amf output stream
*
* @param array $array
* @return Zend_Amf_Parse_Amf3_Serializer
*/
public function writeArray(array $array)
{
// have to seperate mixed from numberic keys.
$numeric = array();
$string = array();
foreach ($array as $key => $value) {
if (is_int($key)) {
$numeric[] = $value;
} else {
$string[$key] = $value;
}
}
// write the preamble id of the array
$length = count($numeric);
$id = ($length << 1) | 0x01;
$this->writeInteger($id);
//Write the mixed type array to the output stream
foreach($string as $key => $value) {
$this->writeString($key)
->writeTypeMarker($value);
}
$this->writeString('');
// Write the numeric array to ouput stream
foreach($numeric as $value) {
$this->writeTypeMarker($value);
}
return $this;
}
/**
* Write object to ouput stream
*
* @param mixed $data
* @return Zend_Amf_Parse_Amf3_Serializer
*/
public function writeObject($object)
{
$encoding = Zend_Amf_Constants::ET_PROPLIST;
$className = '';
//Check to see if the object is a typed object and we need to change
switch (true) {
// the return class mapped name back to actionscript class name.
case ($className = Zend_Amf_Parse_TypeLoader::getMappedClassName(get_class($object))):
break;
// Check to see if the user has defined an explicit Action Script type.
case isset($object->_explicitType):
$className = $object->_explicitType;
unset($object->_explicitType);
break;
// Check if user has defined a method for accessing the Action Script type
case method_exists($object, 'getASClassName'):
$className = $object->getASClassName();
break;
// No return class name is set make it a generic object
default:
break;
}
$traitsInfo = Zend_Amf_Constants::AMF3_OBJECT_ENCODING;
$traitsInfo |= $encoding << 2;
try {
switch($encoding) {
case Zend_Amf_Constants::ET_PROPLIST:
$count = 0;
foreach($object as $key => $value) {
$count++;
}
$traitsInfo |= ($count << 4);
// Write the object ID
$this->writeInteger($traitsInfo);
// Write the classname
$this->writeString($className);
// Write the object Key's to the output stream
foreach ($object as $key => $value) {
$this->writeString($key);
}
//Write the object values to the output stream.
foreach ($object as $key => $value) {
$this->writeTypeMarker($value);
}
break;
case Zend_Amf_Constants::ET_EXTERNAL:
require_once 'Zend/Amf/Exception.php';
throw new Zend_Amf_Exception('External Object Encoding not implemented');
break;
default:
require_once 'Zend/Amf/Exception.php';
throw new Zend_Amf_Exception('Unknown Object Encoding type: ' . $encoding);
}
} catch (Exception $e) {
require_once 'Zend/Amf/Exception.php';
throw new Zend_Amf_Exception('Unable to writeObject output: ' . $e->getMessage());
}
return $this;
}
}