Mercurial > octave
view libinterp/corefcn/oct-fstrm.cc @ 23084:ef4d915df748
maint: Merge stable to default.
author | John W. Eaton <jwe@octave.org> |
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date | Mon, 23 Jan 2017 14:27:48 -0500 |
parents | b98ebcd7f11c e9a0469dedd9 |
children | 092078913d54 |
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/* Copyright (C) 1996-2016 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 (HAVE_CONFIG_H) # include "config.h" #endif #include <cerrno> #include <cstring> #include "error.h" #include "oct-fstrm.h" octave::stream octave_fstream::create (const std::string& nm_arg, std::ios::openmode arg_md, octave::mach_info::float_format ff) { return octave::stream (new octave_fstream (nm_arg, arg_md, ff)); } octave_fstream::octave_fstream (const std::string& nm_arg, std::ios::openmode arg_md, octave::mach_info::float_format ff) : octave::base_stream (arg_md, ff), nm (nm_arg) { fs.open (nm.c_str (), arg_md); if (! fs) // Note: error is inherited from octave::base_stream, not ::error. error (std::strerror (errno)); } // Position a stream at OFFSET relative to ORIGIN. int octave_fstream::seek (off_t, int) { // Note: error is inherited from octave::base_stream, not ::error. // This error function does not halt execution so "return ..." must exist. error ("fseek: invalid_operation"); return -1; } // Return current stream position. off_t octave_fstream::tell (void) { // Note: error is inherited from octave::base_stream, not ::error. // This error function does not halt execution so "return ..." must exist. error ("ftell: invalid_operation"); return -1; } // Return nonzero if EOF has been reached on this stream. bool octave_fstream::eof (void) const { return fs.eof (); } void octave_fstream::do_close (void) { fs.close (); } std::istream * octave_fstream::input_stream (void) { std::istream *retval = 0; if (mode () & std::ios::in) retval = &fs; return retval; } std::ostream * octave_fstream::output_stream (void) { std::ostream *retval = 0; if (mode () & std::ios::out) retval = &fs; return retval; }