/**
* initialize internal variables and write wbxml header to stream
*
* @param string $_urn
* @todo check if dpi > 0, instead checking the urn
*/
protected function _initialize($_dom)
{
$this->_dtd = Wbxml_Dtd_Factory::factory($_dom->doctype->name);
$this->_codePage = $this->_dtd->getCurrentCodePage();
// the WBXML version
$this->_writeByte($this->_version);
if ($this->_codePage->getDPI() === NULL) {
// the document public identifier
$this->_writeMultibyteUInt(1);
} else {
// the document public identifier
// defined in string table
$this->_writeMultibyteUInt(0);
// the offset of the DPI in the string table
$this->_writeByte(0);
}
// write the charSet
$this->_writeCharSet($this->_charSet);
if ($this->_codePage->getDPI() === NULL) {
// the length of the string table
$this->_writeMultibyteUInt(0);
} else {
// the length of the string table
$this->_writeMultibyteUInt(strlen($this->_codePage->getDPI()));
// the dpi
$this->_writeString($this->_codePage->getDPI());
}
}
/**
* the constructor will try to read all data until the first tag
*
* @param resource $_stream
*/
public function __construct($_stream, $_dpi = NULL)
{
if (!is_resource($_stream) || get_resource_type($_stream) != 'stream') {
throw new Exception('$_stream must be a stream');
}
if ($_dpi !== NULL) {
$this->_dpi = $_dpi;
}
$this->_stream = $_stream;
$this->_version = $this->_getByte();
if (feof($this->_stream)) {
throw new Wbxml_Exception_UnexpectedEndOfFile();
}
$this->_getDPI();
$this->_getCharset();
$this->_getStringTable();
// resolve DPI as we have read the stringtable now
// this->_dpi contains the string table index
if ($this->_dpiType === Wbxml_Abstract::DPI_STRINGTABLE) {
$this->_dpi = $this->_stringTable[$this->_dpi];
}
#$this->_dtd = Wbxml_Dtd_Factory::factory($this->_dpi);
$this->_dtd = Wbxml_Dtd_Factory::factory(Wbxml_Dtd_Factory::ACTIVESYNC);
}
