PLearn 0.1
IntVecFile.h
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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 //
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  
00038 
00039 /* *******************************************************      
00040  * $Id: IntVecFile.h 8232 2007-11-07 20:52:17Z nouiz $
00041  * AUTHORS: Pascal Vincent
00042  * This file is part of the PLearn library.
00043  ******************************************************* */
00044 
00045 
00048 #ifndef IntVecFile_INC
00049 #define IntVecFile_INC
00050 
00051 //#include <cstdlib>
00052 //#include "PP.h"
00053 #include <plearn/math/Mat.h>
00054 
00055 namespace PLearn {
00056 using namespace std;
00057 
00077 class IntVecFile
00078 {
00079 protected:
00080     string filename;
00081     FILE* f;
00082     int length_;
00083     int version_number_;                       
00084 
00085     char endianness_;                          
00086 
00087     static const char signature[];             
00088     static const int header_size[];            
00089 
00090 public:
00092     IntVecFile()
00093         : filename(""), f(0), length_(-1),
00094           version_number_(1), endianness_(byte_order()) { }
00095 
00096     IntVecFile(const string& the_filename, bool readwrite=false)
00097         : f(0)  { open(the_filename, readwrite); }
00098 
00100     IntVecFile(const IntVecFile& other);
00101 
00102     virtual void open(const string& the_filename, bool readwrite=false);
00103     virtual void close();
00104 
00105     virtual int get(int i) const;
00106     virtual void put(int i, int value);
00107   
00108     TVec<int> getVec() const;
00109 
00110     inline const string& getFilename() const { return filename; }
00111     inline int length() const { return length_; }
00112     virtual inline int operator[](int i) const { return get(i); }
00113     virtual inline void append(int value) { put(length(),value); }
00114     virtual void append(const TVec<int>& vec);
00115 
00116     virtual ~IntVecFile();
00117 
00118 protected:
00119     void writeFileSignature();                 
00120     void getVersionAndSize();                  
00121     void seek_to_index(int index) const;       
00122 };
00123 
00124 
00125 } // end of namespace PLearn
00126 
00127 #endif
00128 
00129 
00130 /*
00131   Local Variables:
00132   mode:c++
00133   c-basic-offset:4
00134   c-file-style:"stroustrup"
00135   c-file-offsets:((innamespace . 0)(inline-open . 0))
00136   indent-tabs-mode:nil
00137   fill-column:79
00138   End:
00139 */
00140 // vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:encoding=utf-8:textwidth=79 :
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