Mercurial > octave-nkf
view libinterp/interp-core/oct-fstrm.cc @ 16011:8122286c69a9
initial large file support for 32-bit systems
* bootstrap.conf (gnulib_modules): Explicitly list largefile.
* c-file-ptr-stream.cc, c-file-ptr-stream.h, oct-fstrm.cc,
oct-fstrm.h, oct-iostrm.cc, oct-iostrm.h, oct-stdstrm.h,
oct-stream.cc, oct-stream.h, oct-strstrm.cc, oct-strstrm.h,
file-io.cc: Use off_t instead of long for seek and tell file position
values.
author | John W. Eaton <jwe@octave.org> |
---|---|
date | Thu, 07 Feb 2013 11:58:46 -0500 |
parents | 2fc554ffbc28 |
children |
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/* Copyright (C) 1996-2012 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/>. */ #ifdef 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, oct_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, oct_mach_info::float_format ff) : octave_base_stream (arg_md, ff), nm (nm_arg) { #if CXX_ISO_COMPLIANT_LIBRARY fs.open (nm.c_str (), arg_md); #else // Override default protection of 0664 so that umask will appear to // do the right thing. fs.open (nm.c_str (), arg_md, 0666); #endif if (! fs) error (gnulib::strerror (errno)); } // Position a stream at OFFSET relative to ORIGIN. int octave_fstream::seek (off_t, int) { error ("fseek: invalid_operation"); return -1; } // Return current stream position. off_t octave_fstream::tell (void) { error ("ftell: invalid_operation"); return -1; } // Return non-zero 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; }