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Abstract.php
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Abstract.php
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<?php
/**
* Syncroton
*
* @package Wbxml
* @subpackage Wbxml
* @license http://www.tine20.org/licenses/lgpl.html LGPL Version 3
* @copyright Copyright (c) 2008-2009 Metaways Infosystems GmbH (http://www.metaways.de)
* @author Lars Kneschke <l.kneschke@metaways.de>
* @version $Id:Abstract.php 4968 2008-10-17 09:09:33Z l.kneschke@metaways.de $
*/
/**
* class documentation
*
* @package Wbxml
* @subpackage Wbxml
*/
abstract class Syncroton_Wbxml_Abstract
{
/**
* stream containing the wbxml encoded data
*
* @var resource
*/
protected $_stream;
/**
* the wbxml version
*
* @var string
*/
protected $_version;
/**
* the Document Public Identifier
*
* @var string
*/
protected $_dpi;
/**
* the current active dtd
*
* @var Syncroton_Wbxml_Dtd_Syncml_Abstract
*/
protected $_dtd;
/**
* the charSet used in the wbxml file
*
* @var string
*/
protected $_charSet;
/**
* currently active code page
*
* @var array
*/
protected $_codePage;
/**
* see section 5.5
*
*/
const DPI_WELLKNOWN = 'WELLKNOWN';
/**
* see section 5.5
*
*/
const DPI_STRINGTABLE = 'STRINGTABLE';
const SWITCH_PAGE = 0x00;
const END = 0x01;
const ENTITY = 0x02;
const STR_I = 0x03;
const LITERAL = 0x04;
const EXT_I_0 = 0x40;
const EXT_I_1 = 0x41;
const EXT_I_2 = 0x42;
const PI = 0x43;
const LITERAL_C = 0x44;
const EXT_T_0 = 0x80;
const EXT_T_1 = 0x81;
const EXT_T_2 = 0x82;
const STR_T = 0x83;
const LITERAL_A = 0x84;
const EXT_0 = 0xC0;
const EXT_1 = 0xC1;
const EXT_2 = 0xC2;
const OPAQUE = 0xC3;
const LITERAL_AC = 0xC4;
/**
* the real name for this DPI is "unknown"
* But Microsoft is using them for their ActiveSync stuff
* instead defining their own DPI like the sycnml creators did
*
*/
const DPI_1 = '-//AIRSYNC//DTD AirSync//EN';
/**
* return wellknown identifiers
*
* @param integer $_uInt
* @todo add well known identifiers from section 7.2
* @return string
*/
public function getDPI($_uInt = 0)
{
if(!defined('Syncroton_Wbxml_Abstract::DPI_' . $_uInt)) {
throw new Syncroton_Wbxml_Exception('unknown wellknown identifier: ' . $_uInt);
}
$dpi = constant('Syncroton_Wbxml_Abstract::DPI_' . $_uInt);
return $dpi;
}
/**
* return multibyte integer
*
* @return integer
*/
protected function _getMultibyteUInt()
{
$uInt = 0;
do {
$byte = $this->_getByte();
$uInt <<= 7;
$uInt += ($byte & 127);
} while (($byte & 128) != 0);
return $uInt;
}
protected function _getByte()
{
$byte = fread($this->_stream, 1);
if($byte === false) {
throw new Syncroton_Wbxml_Exception("failed reading one byte");
}
return ord($byte);
}
protected function _getOpaque($_length)
{
$string = '';
// it might happen that not complete data is read from stream.
// loop until all data is read or EOF
while ($_length) {
$chunk = fread($this->_stream, $_length);
if ($chunk === false) {
throw new Syncroton_Wbxml_Exception("failed reading opaque data");
}
if ($len = strlen($chunk)) {
$string .= $chunk;
$_length -= $len;
}
if (feof($this->_stream)) {
break;
}
}
return $string;
}
/**
* get a 0 terminated string
*
* @return string
*/
protected function _getTerminatedString()
{
$string = '';
while (($byte = $this->_getByte()) != 0) {
$string .= chr($byte);
}
return $string;
}
protected function _writeByte($_byte)
{
fwrite($this->_stream, chr($_byte));
}
protected function _writeMultibyteUInt($_integer)
{
$multibyte = NULL;
$remainder = $_integer;
do {
$byte = ($remainder & 127);
$remainder >>= 7;
if($multibyte === NULL) {
$multibyte = chr($byte);
} else {
$multibyte = chr($byte | 128) . $multibyte;
}
} while ($remainder != 0);
fwrite($this->_stream, $multibyte);
}
protected function _writeString($_string)
{
fwrite($this->_stream, $_string);
}
/**
* write opaque string to stream
*
* @param string|resource $_string
* @throws Syncroton_Wbxml_Exception
*/
protected function _writeOpaqueString($_string)
{
if (is_resource($_string)) {
$stream = $_string;
} else {
$stream = fopen("php://temp", 'r+');
fwrite($stream, $_string);
}
$length = ftell($stream);
rewind($stream);
$this->_writeByte(Syncroton_Wbxml_Abstract::OPAQUE);
$this->_writeMultibyteUInt($length);
$writenBytes = stream_copy_to_stream($stream, $this->_stream);
if($writenBytes !== $length) {
throw new Syncroton_Wbxml_Exception('blow');
}
fclose($stream);
}
protected function _writeTerminatedString($_string)
{
$this->_writeByte(Syncroton_Wbxml_Abstract::STR_I);
fwrite($this->_stream, $_string);
fwrite($this->_stream, chr(0));
}
}

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text/x-php
Expires
Sat, Apr 4, 3:40 AM (1 d, 13 h)
Storage Engine
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Storage Format
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Storage Handle
e4/eb/00947e58c2470bbb9040a55d367e
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Abstract.php (5 KB)

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