/* Write the gzip footer. */
int RageFileObjGzip::Finish()
{
/* We're about to write to the underlying file (so the footer isn't
* compressed). Flush the compressed data first. */
if( this->Flush() == -1 )
return -1;
/* Read the CRC of the data that's been written. */
uint32_t iCRC;
bool bOK = this->GetCRC32( &iCRC );
ASSERT( bOK );
/* Figure out the size of the data. */
uint32_t iSize = Tell() - m_iDataStartOffset;
/* Write the CRC and size directly to the file, so they don't get compressed. */
iCRC = Swap32LE( iCRC );
if( m_pFile->Write( &iCRC, sizeof(iCRC) ) == -1 )
{
SetError( m_pFile->GetError() );
return -1;
}
/* Write the size. */
iSize = Swap32LE( iSize );
if( m_pFile->Write( &iSize, sizeof(iSize) ) == -1 )
{
SetError( m_pFile->GetError() );
return -1;
}
/* Flush the CRC and wize that we just wrote directly to the file. */
return m_pFile->Flush();
}
int32_t FileReading::read_32_le( RageFileBasic &f, RString &sError )
{
int32_t val;
ReadBytes( f, &val, sizeof(int32_t), sError );
if( sError.size() == 0 )
return Swap32LE( val );
else
return 0;
}
static void write_le32( RageFile &f, RString &sError, uint32_t val )
{
val = Swap32LE( val );
WriteBytes( f, sError, &val, sizeof(uint32_t) );
}
