/**
* Process the raw data from a binary stream
*
* @param Woops_Gzip_Binary_Stream The binary stream
* @return void
*/
public function processData(Woops_Gzip_Binary_Stream $stream)
{
// Gets the data length
$length = $stream->littleEndianUnsignedShort();
// Reads the field data
$this->_data = $stream->read($length);
}
/**
* Class constructor
*
* @param resource The file handle for which to create a binary stream
* @param boolean Whether to close the file handle or not
* @return void
* @see Woops_Gzip_Binary_Stream::__construct
*/
public function __construct($handle, $closeHandle = true)
{
// Checks if the file exists
if (!is_resource($handle)) {
// Error - The file does not exist
throw new Woops_Gzip_Binary_File_Resource_Stream_Exception('Passed argument must be a valid file handle', Woops_Gzip_Binary_File_Resource_Stream_Exception::EXCEPTION_NO_RESOURCE);
}
// Storage
$data = '';
// Reads until the end of the file handle
while (!feof($handle)) {
// Reads from the file handle
$data .= fread($handle, 8192);
}
// Checks if we must close the file handle
if ($closeHandle) {
// Closes the file handle
fclose($handle);
}
// Calls the parent constructor
parent::__construct($data);
}
/**
* Process the raw data from a binary stream
*
* @param Woops_Gzip_Binary_Stream The binary stream
* @return void
*/
public function processData(Woops_Gzip_Binary_Stream $stream)
{
// Gets the member signature
$signature = $stream->littleEndianUnsignedShort();
// Checks the member signature
if ($signature !== 0x8b1f) {
// Error - Invalid member signature
throw new Woops_Gzip_Member_Exception('Invalid member signature (' . $signature . ')', Woops_Gzip_Member_Exception::EXCEPTION_BAD_SIGNATURE);
}
// Gets the compression method
$this->_compressionMethod = $stream->unsignedChar();
// Checks the compression method
if ($this->_compressionMethod !== self::COMPRESSION_DEFLATE) {
// Error - Invalid compression method
throw new Woops_Gzip_Member_Exception('Invalid compression method (' . $this->_compressionMethod . ')', Woops_Gzip_Member_Exception::EXCEPTION_BAD_COMPRESSION_METHOD);
}
// Gets the flags
$flags = $stream->unsignedChar();
// Gets the modification time
$this->_mTime = $stream->littleEndianUnsignedLong();
// Gets the extra flags
$extraFlags = $stream->unsignedChar();
// Gets the operating system
$this->_os = $stream->unsignedChar();
// Checks for an extra field
if ($flags & self::FLAG_EXTRA) {
// Gets the extra field type
$type = $stream->littleEndianUnsignedShort();
// Checks if the type is known
if (isset(self::$_extraFields[$type])) {
// Gets the field class
$fieldClass = self::$_extraFields[$type];
// Creates the extra field
$this->_extraField = new $fieldClass();
} else {
// Unknown extra field
$this->_extraField = new Woops_Gzip_UnknownExtraField($type);
}
// Process the extra field data
$this->_extraField->processData($stream);
}
// Checks for a file name
if ($flags & self::FLAG_NAME) {
// Gets the file name
$this->_fileName = $stream->nullTerminatedString();
}
// Checks for a file comment
if ($flags & self::FLAG_COMMENT) {
// Gets the file comment
$this->_fileComment = $stream->nullTerminatedString();
}
// Checks for a CRC16
if ($flags & self::FLAG_HRCR) {
// Gets the CRC16
$crc16 = $stream->littleEndianUnsignedShort();
}
}
