PLearn 0.1
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00001 // -*- C++ -*- 00002 00003 // FilePStreamBuf.cc 00004 // 00005 // Copyright (C) 2004 Pascal Vincent 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 * $Id: FilePStreamBuf.cc 3994 2005-08-25 13:35:03Z chapados $ 00037 ******************************************************* */ 00038 00039 // Authors: Pascal Vincent 00040 00044 #include "FilePStreamBuf.h" 00045 00046 namespace PLearn { 00047 using namespace std; 00048 00049 FilePStreamBuf::FilePStreamBuf(FILE* in_f, FILE* out_f, 00050 bool own_in_, bool own_out_) 00051 :PStreamBuf(in_f!=0, out_f!=0, 4096, 4096, default_ungetsize), 00052 in(in_f), out(out_f), own_in(own_in_), own_out(own_out_) 00053 {} 00054 00055 FilePStreamBuf::~FilePStreamBuf() 00056 { 00057 const bool in_and_out_equal = (in == out); 00058 00059 flush(); 00060 if(in && own_in) 00061 { 00062 fclose(in); 00063 in = 0; 00064 } 00065 if(out && own_out) 00066 { 00067 if (!in_and_out_equal) 00068 fclose(out); 00069 out = 0; 00070 } 00071 } 00072 00073 FilePStreamBuf::streamsize FilePStreamBuf::read_(char* p, streamsize n) 00074 { 00075 return fread(p, 1, n, in); 00076 } 00077 00079 void FilePStreamBuf::write_(const char* p, streamsize n) 00080 { 00081 streamsize nwritten = fwrite(p, 1, n, out); 00082 if(nwritten!=n) 00083 PLERROR("In FilePStreamBuf::write_ failed to write the requested number of bytes"); 00084 fflush(out); 00085 } 00086 00087 } // end of namespace PLearn 00088 00089 00090 /* 00091 Local Variables: 00092 mode:c++ 00093 c-basic-offset:4 00094 c-file-style:"stroustrup" 00095 c-file-offsets:((innamespace . 0)(inline-open . 0)) 00096 indent-tabs-mode:nil 00097 fill-column:79 00098 End: 00099 */ 00100 // vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:encoding=utf-8:textwidth=79 :