Copyright 1999-2003 John D. Polstra.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgment:
* This product includes software developed by John D. Polstra.
* 4. The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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INTERFACE StreamRd;
A StreamRd.T, or stream reader, is a subtype of Rd.T which represents
a long-running input stream such as a pipe or a TCP connection.
The implementation of a stream reader periodically resets certain
internal variables in order to keep them from overflowing. In
general, Rd.Index() will return incorrect results for stream
readers. But the number of bytes transferred can be obtained by
calling ByteCount().
IMPORT Rd;
TYPE
T <: Rd.T;
PROCEDURE ByteCount(srd: T): LONGREAL;
Return the number of bytes transferred so far.
END StreamRd.