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////////////////////////////////////////////////////////////////////////
//
// Copyright (C) 1996-2021 The Octave Project Developers
//
// See the file COPYRIGHT.md in the top-level directory of this
// distribution or <https://octave.org/copyright/>.
//
// 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
// <https://www.gnu.org/licenses/>.
//
////////////////////////////////////////////////////////////////////////
#if ! defined (octave_oct_iostrm_h)
#define octave_oct_iostrm_h 1
#include "octave-config.h"
#include <iosfwd>
#include "oct-stream.h"
class
octave_base_iostream : public octave::base_stream
{
public:
octave_base_iostream (const std::string& n = "",
std::ios::openmode m = std::ios::in | std::ios::out,
octave::mach_info::float_format ff
= octave::mach_info::native_float_format ())
: octave::base_stream (m, ff), m_name (n) { }
// No copying!
octave_base_iostream (const octave_base_iostream&) = delete;
octave_base_iostream& operator = (const octave_base_iostream&) = delete;
protected:
~octave_base_iostream (void) = default;
public:
// Position a stream at OFFSET relative to ORIGIN.
int seek (off_t offset, int origin);
// Return current stream position.
off_t tell (void);
// Return nonzero if EOF has been reached on this stream.
bool eof (void) const;
// The name of the file.
std::string name (void) const { return m_name; }
protected:
void invalid_operation (void) const;
private:
std::string m_name;
virtual const char * stream_type (void) const = 0;
};
class
octave_istream : public octave_base_iostream
{
public:
octave_istream (std::istream *arg = nullptr, const std::string& n = "")
: octave_base_iostream (n, std::ios::in,
octave::mach_info::native_float_format ()),
m_istream (arg)
{ }
static octave::stream
create (std::istream *arg = nullptr, const std::string& n = "");
// Return nonzero if EOF has been reached on this stream.
bool eof (void) const;
std::istream * input_stream (void) { return m_istream; }
std::ostream * output_stream (void) { return nullptr; }
protected:
~octave_istream (void) = default;
private:
std::istream *m_istream;
const char * stream_type (void) const { return "octave_istream"; }
// No copying!
octave_istream (const octave_istream&) = delete;
octave_istream& operator = (const octave_istream&) = delete;
};
class
octave_ostream : public octave_base_iostream
{
public:
octave_ostream (std::ostream *arg, const std::string& n = "")
: octave_base_iostream (n, std::ios::out,
octave::mach_info::native_float_format ()),
m_ostream (arg)
{ }
static octave::stream
create (std::ostream *arg, const std::string& n = "");
// Return nonzero if EOF has been reached on this stream.
bool eof (void) const;
std::istream * input_stream (void) { return nullptr; }
std::ostream * output_stream (void) { return m_ostream; }
protected:
~octave_ostream (void) = default;
private:
std::ostream *m_ostream;
const char * stream_type (void) const { return "octave_ostream"; }
// No copying!
octave_ostream (const octave_ostream&) = delete;
octave_ostream& operator = (const octave_ostream&) = delete;
};
#endif
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