protected internal virtual InputStream GetInputStream()
{
switch (status)
{
case ByteRangeInputStream.StreamStatus.Normal:
{
break;
}
case ByteRangeInputStream.StreamStatus.Seek:
{
if (@in != null)
{
@in.Close();
}
@in = OpenInputStream();
status = ByteRangeInputStream.StreamStatus.Normal;
break;
}
case ByteRangeInputStream.StreamStatus.Closed:
{
throw new IOException("Stream closed");
}
}
return(@in);
}
/// <exception cref="System.IO.IOException"/>
public override void Close()
{
if (@in != null)
{
@in.Close();
@in = null;
}
status = ByteRangeInputStream.StreamStatus.Closed;
}
/// <summary>Seek to the given offset from the start of the file.</summary>
/// <remarks>
/// Seek to the given offset from the start of the file.
/// The next read() will be from that location. Can't
/// seek past the end of the file.
/// </remarks>
/// <exception cref="System.IO.IOException"/>
public override void Seek(long pos)
{
if (pos != currentPos)
{
startPos = pos;
currentPos = pos;
if (status != ByteRangeInputStream.StreamStatus.Closed)
{
status = ByteRangeInputStream.StreamStatus.Seek;
}
}
}
