http://www.ousob.com --- Legacy Redefined OuSob - File: /wwwroot/clipx/usr/include/wvstreams/wvstreamclone.h

/* -*- Mode: C++ -*- * Worldvisions Weaver Software: * Copyright (C) 1997-2002 Net Integration Technologies, Inc. * * Provides support for constructing streams that wrap other streams. * This can turn a (relatively useless) IWvStream into a useful WvStream. */ #ifndef __WVSTREAMCLONE_H #define __WVSTREAMCLONE_H #include "wvstream.h" /** * WvStreamClone simply forwards all requests to the "cloned" stream. * * A class derived from WvStreamClone can contain a WvStream as a * dynamically allocated data member, but act like the stream itself. * * This is useful for classes that need to create/destroy WvPipes * while they run, for example, yet do not want users to know about * the member variable. * * WvStreamClone _does_ attempt to close the cloned stream in the * destructor. */ class WvStreamClone : public WvStream { public: /** * WvStreamClone gains ownership (i.e. it will delete it when it * dies) of the stream you give it. If you do not want that to * happen, set cloned to NULL before destroying the WvStreamClone * (for example, in your destructor if you derive WvStreamClone). * * If you want to be certain that the cloned stream will not be * harmed in any way by deleting or closing the wrapper stream, * set disassociate_on_close to true. */ WvStreamClone(IWvStream *_cloned = NULL); virtual ~WvStreamClone(); IWvStream *cloned; bool disassociate_on_close; // defaults to false virtual void setclone(IWvStream *clone); virtual void close(); virtual bool flush_internal(time_t msec_timeout); virtual size_t uread(void *buf, size_t size); virtual size_t uwrite(const void *buf, size_t size); virtual bool isok() const; virtual int geterr() const; virtual WvString errstr() const; virtual bool pre_select(SelectInfo &si); virtual bool post_select(SelectInfo &si); virtual const WvAddr *src() const; virtual void execute(); virtual void noread(); virtual void nowrite(); private: void close_callback(WvStream &s); }; #endif // __WVSTREAMCLONE_H