wvconstream.cc

00001 /*
00002  * Worldvisions Weaver Software:
00003  *   Copyright (C) 1997-2002 Net Integration Technologies, Inc.
00004  * 
00005  * Declarations for wvcon, wvin, wvout, and wverr global streams.
00006  */
00007 #include "wvfdstream.h"
00008 #include "wvmoniker.h"
00009 #include "wvlinkerhack.h"
00010 
00011 WV_LINK(WvConStream);
00012 
00013 // just like WvFDStream, but doesn't close the fd
00014 class _WvConStream : public WvFDStream
00015 {
00016 public:
00017     bool isopen;
00018     
00019     _WvConStream(int _rfd, int _wfd);
00020     virtual ~_WvConStream();
00021     virtual void close();
00022     virtual bool isok() const;
00023 };
00024 
00025 
00026 static IWvStream *create_stdin(WvStringParm s)
00027 {
00028     return new _WvConStream(0, -1);
00029 }
00030 static IWvStream *create_stdout(WvStringParm s)
00031 {
00032     return new _WvConStream(-1, 1);
00033 }
00034 static IWvStream *create_stderr(WvStringParm s)
00035 {
00036     return new _WvConStream(-1, 2);
00037 }
00038 static IWvStream *create_stdio(WvStringParm s)
00039 {
00040     return new _WvConStream(0, 1);
00041 }
00042 
00043 static WvMoniker<IWvStream> reg0("stdin",  create_stdin);
00044 static WvMoniker<IWvStream> reg1("stdout", create_stdout);
00045 static WvMoniker<IWvStream> reg2("stderr", create_stderr);
00046 static WvMoniker<IWvStream> reg3("stdio",  create_stdio);
00047 
00048 
00049 
00050 _WvConStream::_WvConStream(int _rfd, int _wfd) : WvFDStream(_rfd, _wfd)
00051 {
00052     isopen = true;
00053 }
00054 
00055 
00056 _WvConStream::~_WvConStream()
00057 {
00058     close();
00059 }
00060 
00061 
00062 void _WvConStream::close()
00063 {
00064     isopen = false;
00065     setfd(-1); // prevent WvFdStream from closing our fds
00066     WvFDStream::close();
00067 }
00068 
00069 
00070 bool _WvConStream::isok() const
00071 {
00072     return isopen;
00073 }
00074 
00075 
00076 // console streams
00077 #ifdef _WIN32
00078 
00079 #include "streams.h"
00080 SocketFromFDMaker _zero(_dup(0), fd2socket_fwd, false);
00081 SocketFromFDMaker _one(1, socket2fd_fwd, true);
00082 SocketFromFDMaker _two(2, socket2fd_fwd, true);
00083 
00084 static _WvConStream _wvcon(_zero.GetSocket(), _one.GetSocket());
00085 static _WvConStream _wvin(_zero.GetSocket(), -1);
00086 static _WvConStream _wvout(-1, _one.GetSocket());
00087 static _WvConStream _wverr(-1, _two.GetSocket());
00088 
00089 #else // _WIN32
00090 
00091 static _WvConStream _wvcon(0, 1);
00092 static _WvConStream _wvin(0, -1);
00093 static _WvConStream _wvout(-1, 1);
00094 static _WvConStream _wverr(-1, 2);
00095 
00096 #endif // !_WIN32
00097 
00098 WvStream *wvcon = &_wvcon;
00099 WvStream *wvin = &_wvin;
00100 WvStream *wvout = &_wvout;
00101 WvStream *wverr = &_wverr;
00102 

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