protected override void WriteDataToStream(Stream stream, SharedExtractParams extractParams, bool decompress)
{
var reader = extractParams.Reader;
decompress = decompress && this.Compressed;
reader.BaseStream.Position = (long)Offset;
// Reset at start since value might still be in used for a bit after
this.BytesWritten = 0;
if (this.Archive.Type == ArchiveTypes.BSA_SE)
{
// Separate Skyrim Special Edition extraction
ulong filesz = this.Size & 0x3fffffff;
if (this.Archive.ContainsFileNameBlobs)
{
int len = reader.ReadByte();
filesz -= (ulong)len + 1;
reader.BaseStream.Seek((long)this.Offset + 1 + len, SeekOrigin.Begin);
}
uint filesize = (uint)filesz;
if (this.Size > 0 && this.Compressed)
{
filesize = reader.ReadUInt32();
filesz -= 4;
}
if (!decompress)
{
StreamUtils.WriteSectionToStream(reader.BaseStream,
filesz,
stream,
bytesWritten => this.BytesWritten = bytesWritten);
}
else
{
CompressionUtils.DecompressLZ4(reader.BaseStream,
(uint)filesz,
stream,
bytesWritten => this.BytesWritten = bytesWritten);
}
}
else
{
// Skip ahead
if (this.Archive.ContainsFileNameBlobs)
{
reader.BaseStream.Position += reader.ReadByte() + 1;
}
if (!decompress)
{
StreamUtils.WriteSectionToStream(reader.BaseStream,
this.Size,
stream,
bytesWritten => this.BytesWritten = bytesWritten);
}
else
{
if (this.Compressed)
{
reader.ReadUInt32(); // Skip
}
CompressionUtils.Decompress(reader.BaseStream,
this.Size - 4,
stream,
bytesWriten => this.BytesWritten = bytesWriten,
extractParams);
}
}
}
