/**
* Initialize the instance.
*
* @param Reader $reader The reader that provides the data.
*
* @throws UnexpectedHeaderException Throws an UnexpectedHeaderException if the header signature is not valid.
* @throws Exception Throws an Exception in case of errors.
*/
public function __construct(Reader $reader)
{
parent::__construct($reader);
if ($this->headerSignature !== 'ITSP') {
throw UnexpectedHeaderException::create('ITSP', $this->headerSignature);
}
if ($this->headerVersion !== 1) {
throw new Exception('Unsupported ITSP version number: ' . $this->headerVersion);
}
/* Unknown (10) */
$reader->readUInt32();
$this->directoryChunkSize = $reader->readUInt32();
$this->quickRefDensity = $reader->readUInt32();
$this->indexDepth = $reader->readUInt32();
$this->rootIndexChunkNumber = $reader->readInt32();
$this->firstPMGLChunkNumber = $reader->readUInt32();
$this->lastPMGLChunkNumber = $reader->readUInt32();
/* Unknown (-1) */
$reader->readInt32();
$this->numberOfDirectoryChunks = $reader->readUInt32();
$this->generatorLanguage = new Language($reader->readUInt32());
$this->systemGUID = $reader->readGUID();
/* Again the size of this header (84) */
$reader->readUInt32();
/* Unknown (-1) */
$reader->readInt32();
/* Unknown (-1) */
$reader->readInt32();
/* Unknown (-1) */
$reader->readInt32();
}
/**
* Initialize the instance.
*
* @param Reader $reader The reader that provides the data.
*
* @throws UnexpectedHeaderException Throws an UnexpectedHeaderException if the header signature is not valid.
* @throws Exception Throws an Exception in case of errors.
*/
public function __construct(Reader $reader)
{
parent::__construct($reader);
if ($this->headerSignature !== 'ITSF') {
throw UnexpectedHeaderException::create('ITSF', $this->headerSignature);
}
if ($this->headerVersion < 2 || $this->headerVersion > 3) {
throw new Exception('Unsupported ITSF version number: ' . $this->headerVersion);
}
/* Unknown (1) */
$reader->readUInt32();
$this->timestamp = $reader->readUInt32();
$this->originalOSLanguage = new Language($reader->readUInt32());
$this->directoryGUID = $reader->readGUID();
$this->streamGUID = $reader->readGUID();
$this->sectionOffset = $reader->readUInt64();
$this->sectionLength = $reader->readUInt64();
$this->directoryOffset = $reader->readUInt64();
$this->directoryLength = $reader->readUInt64();
if ($this->headerLength >= 96) {
$this->contentOffset = $reader->readUInt64();
} else {
$this->contentOffset = $this->directoryOffset + $this->directoryLength;
}
}
