bifstream.cc

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/* Copyright (C) 2003-2012 Oliver Lemke <olemke@core-dump.info>

   This program is free software; you can redistribute it and/or modify it
   under the terms of the GNU General Public License as published by the
   Free Software Foundation; either version 2, or (at your option) any
   later version.

   This program 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 General Public License for more details.

   You should have received a copy of the GNU General Public License
   along with this program; if not, write to the Free Software
   Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307,
   USA. */


//   File description

#include <fstream>
#include <stdexcept>
#include "bifstream.h"

void bifstream::seek(long spos, Offset offs)
{
  if(!in) { err = NotOpen; return; }

  switch(offs) {
  case Set: this->seekg(spos, ios::beg); break;
  case Add: this->seekg(spos, ios::cur); break;
  case End: this->seekg(spos, ios::end); break;
  }
}

streampos bifstream::pos()
{
  if(!in) { err = NotOpen; return 0; }
  return streampos (this->tellg());
}

bifstream::Byte bifstream::getByte()
{
  if(this->good ()) {
        int iread;
        iread = this->get ();
        if(iread == EOF) err |= Eof;
        return (Byte)iread;
  } else {
        err |= NotOpen;
        throw runtime_error ("Reading from binary file failed");
        return 0;
  }
}


/* Overloaded input operators */
bifstream& operator>> (bifstream& bif, double& n)
{ n = (double)bif.readFloat (binio::Double); return (bif); }

bifstream& operator>> (bifstream& bif, float& n)
{ n = (float)bif.readFloat (binio::Double); return (bif); }

bifstream& operator>> (bifstream& bif, long& n)
{ n = (long)bif.readInt (4); return (bif); }

bifstream& operator>> (bifstream& bif, int& n)
{ n = (int)bif.readInt (4); return (bif); }