PLearn 0.1
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00001 // -*- C++ -*- 00002 00003 // PLearn (A C++ Machine Learning Library) 00004 // Copyright (C) 1998 Pascal Vincent 00005 // Copyright (C) 1999-2002 Pascal Vincent, Yoshua Bengio and University of Montreal 00006 // Copyright (C) 2006 Xavier Saint-Mleux 00007 00008 // Redistribution and use in source and binary forms, with or without 00009 // modification, are permitted provided that the following conditions are met: 00010 // 00011 // 1. Redistributions of source code must retain the above copyright 00012 // notice, this list of conditions and the following disclaimer. 00013 // 00014 // 2. Redistributions in binary form must reproduce the above copyright 00015 // notice, this list of conditions and the following disclaimer in the 00016 // documentation and/or other materials provided with the distribution. 00017 // 00018 // 3. The name of the authors may not be used to endorse or promote 00019 // products derived from this software without specific prior written 00020 // permission. 00021 // 00022 // THIS SOFTWARE IS PROVIDED BY THE AUTHORS ``AS IS'' AND ANY EXPRESS OR 00023 // IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 00024 // OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN 00025 // NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 00026 // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED 00027 // TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR 00028 // PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF 00029 // LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING 00030 // NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS 00031 // SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 00032 // 00033 // This file is part of the PLearn library. For more information on the PLearn 00034 // library, go to the PLearn Web site at www.plearn.org 00035 00036 00037 #ifndef BufferedIntVecFile_INC 00038 #define BufferedIntVecFile_INC 00039 00040 #include <plearn/io/IntVecFile.h> 00041 00042 namespace PLearn { 00043 using namespace std; 00044 00045 class BufferedIntVecFile : public IntVecFile 00046 { 00047 protected: 00048 00049 static const int DEFAULT_BUFLEN= 65536; 00050 00051 typedef IntVecFile inherited; 00052 00053 mutable int bufstart; 00054 const int buflen; 00055 mutable int* buf; 00056 mutable bool bufmod; 00057 00058 public: 00060 BufferedIntVecFile(int buflen_= DEFAULT_BUFLEN) 00061 : IntVecFile(), bufstart(-1), buflen(buflen_), bufmod(false) 00062 { buf= new int[buflen]; } 00063 BufferedIntVecFile(const string& the_filename, bool readwrite=false, int buflen_= DEFAULT_BUFLEN) 00064 : IntVecFile(the_filename, readwrite), bufstart(-1), buflen(buflen_), bufmod(false) 00065 { buf= new int[buflen]; } 00066 00068 //BufferedIntVecFile(const IntVecFile& other); 00069 00070 virtual void open(const string& the_filename, bool readwrite=false); 00071 virtual void close(); 00072 00073 virtual int get(int i) const; 00074 virtual void put(int i, int value); 00075 00076 virtual inline int operator[](int i) const { return get(i); } 00077 virtual inline void append(int value) { put(length(),value); } 00078 00079 virtual ~BufferedIntVecFile(); 00080 00081 protected: 00082 virtual void getBuf(int bufstart_); 00083 virtual void flush(); 00084 00085 }; 00086 00087 00088 } // end of namespace PLearn 00089 00090 #endif 00091 00092 00093 /* 00094 Local Variables: 00095 mode:c++ 00096 c-basic-offset:4 00097 c-file-style:"stroustrup" 00098 c-file-offsets:((innamespace . 0)(inline-open . 0)) 00099 indent-tabs-mode:nil 00100 fill-column:79 00101 End: 00102 */ 00103 // vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:encoding=utf-8:textwidth=79 :