view libinterp/corefcn/oct-fstrm.h @ 18518:0bdecd41b2dd stable

correctly size fread result (bug #41648) * oct-stream.cc (octave_base_stream::read): When reading to EOF, don't add extra column to the result matrix if the number of elements found is an exact multiple of the number of rows requested. Avoid mixed signed/unsigned comparisons. * io.tst: New tests.
author John W. Eaton <jwe@octave.org>
date Sat, 22 Feb 2014 13:06:18 -0500
parents ebb3ef964372
children 9ac2357f19bc
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/*

Copyright (C) 1996-2013 John W. Eaton

This file is part of Octave.

Octave 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 3 of the License, or (at your
option) any later version.

Octave 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 Octave; see the file COPYING.  If not, see
<http://www.gnu.org/licenses/>.

*/

#if !defined (octave_oct_fstrm_h)
#define octave_oct_fstrm_h 1

#include <fstream>
#include <string>

#include "oct-stream.h"

class
octave_fstream : public octave_base_stream
{
public:

  octave_fstream (const std::string& nm_arg,
                  std::ios::openmode arg_md = std::ios::in|std::ios::out,
                  oct_mach_info::float_format flt_fmt
                    = oct_mach_info::native_float_format ());

  static octave_stream
  create (const std::string& nm_arg,
          std::ios::openmode arg_md = std::ios::in|std::ios::out,
          oct_mach_info::float_format flt_fmt
            = oct_mach_info::native_float_format ());

  // Position a stream at OFFSET relative to ORIGIN.

  int seek (off_t offset, int origin);

  // Return current stream position.

  off_t tell (void);

  // Return non-zero if EOF has been reached on this stream.

  bool eof (void) const;

  void do_close (void);

  // The name of the file.

  std::string name (void) const { return nm; }

  std::istream *input_stream (void);

  std::ostream *output_stream (void);

protected:

  ~octave_fstream (void) { }

private:

  std::string nm;

  std::fstream fs;

  // No copying!

  octave_fstream (const octave_fstream&);

  octave_fstream& operator = (const octave_fstream&);
};

#endif