public override int Read(byte[] buffer, int offset, int count)
{
if (DecompressEnumerator == null)
{
DecompressEnumerator = Decompress(compressedStream).GetEnumerator();
}
int i;
for (i = 0; i < count; i++)
{
DecompressEnumerator.MoveNext();
buffer[offset + i] = DecompressEnumerator.Current;
}
return(i);
}
public override long Seek(long offset, SeekOrigin origin)
{
if (origin == SeekOrigin.Current && offset < 0)
{
origin = SeekOrigin.Begin;
offset = decompressedPosition + offset;
}
if (origin == SeekOrigin.Begin)
{
decompressedPosition = 0;
compressedStream.Position = compressedStartPosition;
DecompressEnumerator = Decompress(compressedStream).GetEnumerator();
for (int i = 0; i < offset; i++)
{
DecompressEnumerator.MoveNext();
}
return(decompressedPosition);
}
if (origin == SeekOrigin.Current)
{
for (int i = 0; i < offset; i++)
{
DecompressEnumerator.MoveNext();
}
return(decompressedPosition);
}
if (origin == SeekOrigin.End)
{
var desiredPosition = decompressedLength + offset;
return(Seek(desiredPosition, SeekOrigin.Begin));
}
return(-1);
}