/usr/include/wvstreams/wvbufstream.h is in libwvstreams-dev 4.6.1-7.
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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 | /* -*- Mode: C++ -*-
* Worldvisions Weaver Software:
* Copyright (C) 1997-2002 Net Integration Technologies, Inc.
*
* A buffered loopback stream.
*/
#ifndef __WVBUFSTREAM_H
#define __WVBUFSTREAM_H
#include "wvstream.h"
/**
* WvBufStream stores data written by write(), and returns it
* later on in read().
*
* Handy for making virtual streams, like WvHttpPool.
*
* After seteof(), the stream closes itself (without error) once the inbuf
* is emptied out by read().
*
* FIXME: WvStream itself should probably deal better with streams that go
* !isok() with stuff still in inbuf. Then we could skip seteof() altogether,
* and just do close() when we're done write()ing data. For now, it's just
* too unreliable to do that, since streams do things like drop out of
* WvStreamLists automatically when they're !isok(), even if they still have
* data in inbuf.
*
* 2003/12/09: This is cleaned up a lot by WvStream's new noread()/nowrite()
* functions, but we still need to actually *use* them in WvBufStream...
*/
class WvBufStream : public WvStream
{
bool dead, /*!< true if the stream has been closed */
eof; /*!< true if the sender has no more data to write(). */
public:
WvBufStream();
virtual ~WvBufStream();
virtual void close();
virtual size_t uread(void *buf, size_t size);
virtual size_t uwrite(const void *buf, size_t size);
virtual bool isok() const;
virtual void pre_select(SelectInfo &si);
virtual bool post_select(SelectInfo &si);
void seteof() { eof = true; }
};
#endif // __WVBUFSTREAM_H
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