void BArchive::openDFW(const Common::String &path) {
byte *table;
uint16 tableSize;
byte buf[2];
_f.open(path);
if (!_f.isOpen()) {
debugC(2, kDraciArchiverDebugLevel, "Error opening file");
return;
}
_fileCount = _f.readUint16LE();
tableSize = _f.readUint16LE();
_f.read(buf, 2);
if (memcmp(buf, _dfwMagicNumber, 2) == 0) {
debugC(2, kDraciArchiverDebugLevel, "Success");
_isDFW = true;
} else {
debugC(2, kDraciArchiverDebugLevel, "Not a DFW archive");
_f.close();
return;
}
debugC(2, kDraciArchiverDebugLevel, "Archive info (DFW): %d files", _fileCount);
// Read in index table
table = new byte[tableSize];
_f.read(table, tableSize);
// Read in file headers, but do not read the actual data yet
// The data will be read on demand to save memory
_files = new BAFile[_fileCount];
Common::MemoryReadStream tableReader(table, tableSize);
for (uint i = 0; i < _fileCount; ++i) {
_files[i]._compLength = tableReader.readUint16LE();
_files[i]._offset = tableReader.readUint32LE();
// Seek to the current file
_f.seek(_files[i]._offset);
_files[i]._length = _f.readUint16LE(); // Read in uncompressed length
_f.readUint16LE(); // Compressed length again (already read from the index table)
_files[i]._stopper = _f.readByte();
_files[i]._data = NULL; // File data will be read in on demand
_files[i]._crc = 0; // Dummy value; not used in DFW archives
}
// Indicate that the archive was successfully opened
_opened = true;
// Cleanup
delete[] table;
}
/// Parses the streams to retrieve a StyleSheet.
StyleSheet::StyleSheet (FileInformationBlock* fib, POLE::Stream* tableStream, POLE::Stream* dataStream) : stshi(NULL), Styles(NULL)
{
VirtualStreamReader tableReader( tableStream, fib->m_FibWord97.fcStshf, fib->m_bOlderVersion);
//read size of the STSHI
int stshiLengthBytesSize = 2;
unsigned char* stshiLengthBytes = tableReader.ReadBytes( stshiLengthBytesSize, true );
short cbStshi = FormatUtils::BytesToInt16( stshiLengthBytes, 0, stshiLengthBytesSize );
RELEASEARRAYOBJECTS( stshiLengthBytes );
//read the bytes of the STSHI
tableReader.Seek( ( fib->m_FibWord97.fcStshf + 2 ), 0/*STREAM_SEEK_SET*/ );
unsigned char* stshi = tableReader.ReadBytes( cbStshi, true );
//parses STSHI
this->stshi = new StyleSheetInformation( stshi, cbStshi );
RELEASEARRAYOBJECTS( stshi );
//create list of STDs
Styles = new std::vector<StyleSheetDescription*>();
for ( int i = 0; i < this->stshi->cstd; i++ )
{
//get the cbStd
unsigned short cbStd = tableReader.ReadUInt16();
if ( cbStd != 0 )
{
//read the STD bytes
unsigned char* std = tableReader.ReadBytes( cbStd, true );
//parse the STD bytes
Styles->push_back( new StyleSheetDescription( std, cbStd, (int)this->stshi->cbSTDBaseInFile, dataStream, fib->m_bOlderVersion) );
RELEASEARRAYOBJECTS( std );
}
else
{
Styles->push_back( NULL );
}
}
}
