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Languguage OS II Version 10-94 (Knowledge Media)(1994).ISO
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SFile.h
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1992-01-17
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// This may look like C code, but it is really -*- C++ -*-
/*
Copyright (C) 1988, 1992 Free Software Foundation
written by Doug Lea (dl@rocky.oswego.edu)
This file is part of the GNU C++ Library. This library is free
software; you can redistribute it and/or modify it under the terms of
the GNU Library General Public License as published by the Free
Software Foundation; either version 2 of the License, or (at your
option) any later version. This library is distributed in the hope
that it will be useful, but WITHOUT ANY WARRANTY; without even the
implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
PURPOSE. See the GNU Library General Public License for more details.
You should have received a copy of the GNU Library General Public
License along with this library; if not, write to the Free Software
Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
*/
#ifndef _SFile_h
#ifdef __GNUG__
#pragma interface
#endif
#define _SFile_h 1
#include <File.h>
class SFile: public File
{
protected:
int sz; // unit size for structured binary IO
public:
SFile();
SFile(const char* filename, int size, io_mode m, access_mode a);
SFile(const char* filename, int size, const char* m);
SFile(int filedesc, int size, io_mode m);
SFile(FILE* fileptr, int size);
~SFile();
int size();
int setsize(int s);
SFile& get(void* x);
SFile& put(void* x);
SFile& operator[](long i);
};
#if defined(__OPTIMIZE__) || defined(USE_LIBGXX_INLINES)
inline int SFile::size()
{
return sz;
}
inline int SFile::setsize(int s)
{
int old = sz;
sz = s;
return old;
}
inline SFile& SFile::get(void* x)
{
read(x, sz, 1); return *this;
}
inline SFile& SFile::put(void* x)
{
write(x, sz, 1); return *this;
}
inline SFile& SFile::operator[](long i)
{
seek(i * sz, 0); return *this;
}
#endif
#endif