Method WriteBytes

Source/Engine/Serialization/FileWriteStream.cpp:79–117

}

void FileWriteStream::WriteBytes(const void* data, uint32 bytes)
{
    const uint32 bufferBytesLeft = FILESTREAM_BUFFER_SIZE - _virtualPosInBuffer;
    if (bytes <= bufferBytesLeft)
    {
        Platform::MemoryCopy(_buffer + _virtualPosInBuffer, data, bytes);
        _virtualPosInBuffer += bytes;
    }
    else
    {
        uint32 bytesWritten;

        // Flush already written bytes and write more it the buffer (reduce amount of flushes)
        if (_virtualPosInBuffer > 0)
        {
            Platform::MemoryCopy(_buffer + _virtualPosInBuffer, data, bufferBytesLeft);
            data = (byte*)data + bufferBytesLeft;
            bytes -= bufferBytesLeft;
            _virtualPosInBuffer = 0;
            _hasError |= _file->Write(_buffer, FILESTREAM_BUFFER_SIZE, &bytesWritten) != 0;
        }

        // Write as much as can using whole buffer
        while (bytes >= FILESTREAM_BUFFER_SIZE)
        {
            Platform::MemoryCopy(_buffer, data, FILESTREAM_BUFFER_SIZE);
            data = (byte*)data + FILESTREAM_BUFFER_SIZE;
            bytes -= FILESTREAM_BUFFER_SIZE;
            _hasError |= _file->Write(_buffer, FILESTREAM_BUFFER_SIZE, &bytesWritten) != 0;
        }

        // Write the rest of the buffer but without flushing its data
        if (bytes > 0)
        {
            Platform::MemoryCopy(_buffer, data, bytes);
            _virtualPosInBuffer = bytes;
        }
    }
}