PLearn 0.1
pl_nullstreambuf.h
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00001 // -*- C++ -*-
00002 
00003 // PLearn (A C++ Machine Learning Library)
00004 // Copyright (C) 2002 Xavier Saint-Mleux <saintmlx@iro.umontreal.ca>
00005 //
00006 
00007 // Redistribution and use in source and binary forms, with or without
00008 // modification, are permitted provided that the following conditions are met:
00009 // 
00010 //  1. Redistributions of source code must retain the above copyright
00011 //     notice, this list of conditions and the following disclaimer.
00012 // 
00013 //  2. Redistributions in binary form must reproduce the above copyright
00014 //     notice, this list of conditions and the following disclaimer in the
00015 //     documentation and/or other materials provided with the distribution.
00016 // 
00017 //  3. The name of the authors may not be used to endorse or promote
00018 //     products derived from this software without specific prior written
00019 //     permission.
00020 // 
00021 // THIS SOFTWARE IS PROVIDED BY THE AUTHORS ``AS IS'' AND ANY EXPRESS OR
00022 // IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
00023 // OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN
00024 // NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
00025 // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED
00026 // TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
00027 // PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
00028 // LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
00029 // NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
00030 // SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
00031 // 
00032 // This file is part of the PLearn library. For more information on the PLearn
00033 // library, go to the PLearn Web site at www.plearn.org
00034 
00035 
00036 #ifndef pl_nullstreambuf_INC
00037 #define pl_nullstreambuf_INC
00038 
00039 #if __GNUC__ < 3 && !defined(WIN32)
00040 #  include <streambuf.h>
00041 #else
00042 #  include <streambuf>
00043 #endif
00044 #include <cstdio> //Needed by g++ 4.5.1 
00045 
00046 namespace PLearn {
00047 using namespace std;
00048 
00055 class pl_nullstreambuf : public streambuf
00056 {
00057 private:
00058 #if __GNUC__ < 3 && !defined(WIN32)
00059     typedef int int_type;
00060 #endif
00061     static const int_type eof = EOF;
00062 
00063 protected:
00065     virtual int_type underflow() { return pl_nullstreambuf::eof; }
00066 
00068     virtual int_type overflow(int_type meta = pl_nullstreambuf::eof) { return meta; }
00069 
00070 public:
00072     pl_nullstreambuf() :streambuf() {}
00073 };
00074 
00075 } // namespace PLearn
00076 
00077 #endif //ndef pl_nullstreambuf_INC
00078 
00079 
00080 /*
00081   Local Variables:
00082   mode:c++
00083   c-basic-offset:4
00084   c-file-style:"stroustrup"
00085   c-file-offsets:((innamespace . 0)(inline-open . 0))
00086   indent-tabs-mode:nil
00087   fill-column:79
00088   End:
00089 */
00090 // vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:encoding=utf-8:textwidth=79 :
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