Mercurial > octave-nkf
view libinterp/corefcn/getgrent.cc @ 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 | 175b392e91fe |
children | 4197fc428c7d |
line wrap: on
line source
/* 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/>. */ #ifdef HAVE_CONFIG_H #include <config.h> #endif #include <string> #include <sys/types.h> #include "oct-group.h" #include "defun.h" #include "error.h" #include "gripes.h" #include "oct-map.h" #include "ov.h" #include "oct-obj.h" #include "utils.h" // Group file functions. (Why not?) static octave_value mk_gr_map (const octave_group& gr) { octave_value retval; if (gr) { octave_scalar_map m; m.assign ("name", gr.name ()); m.assign ("passwd", gr.passwd ()); m.assign ("gid", static_cast<double> (gr.gid ())); m.assign ("mem", octave_value (gr.mem ())); retval = m; } else retval = 0; return retval; } DEFUN (getgrent, args, , "-*- texinfo -*-\n\ @deftypefn {Built-in Function} {@var{grp_struct} =} getgrent ()\n\ Return an entry from the group database, opening it if necessary.\n\ Once the end of data has been reached, @code{getgrent} returns 0.\n\ @end deftypefn") { octave_value_list retval; retval(1) = std::string (); retval(0) = 0; int nargin = args.length (); if (nargin == 0) { std::string msg; retval(1) = msg; retval(0) = mk_gr_map (octave_group::getgrent (msg)); } else print_usage (); return retval; } DEFUN (getgrgid, args, , "-*- texinfo -*-\n\ @deftypefn {Built-in Function} {@var{grp_struct} =} getgrgid (@var{gid}).\n\ Return the first entry from the group database with the group ID\n\ @var{gid}. If the group ID does not exist in the database,\n\ @code{getgrgid} returns 0.\n\ @end deftypefn") { octave_value_list retval; retval(1) = std::string (); retval(0) = 0; int nargin = args.length (); if (nargin == 1) { double dval = args(0).double_value (); if (! error_state) { if (D_NINT (dval) == dval) { gid_t gid = static_cast<gid_t> (dval); std::string msg; retval(1) = msg; retval(0) = mk_gr_map (octave_group::getgrgid (gid, msg)); } else error ("getgrgid: GID must be an integer"); } } else print_usage (); return retval; } DEFUN (getgrnam, args, , "-*- texinfo -*-\n\ @deftypefn {Built-in Function} {@var{grp_struct} =} getgrnam (@var{name})\n\ Return the first entry from the group database with the group name\n\ @var{name}. If the group name does not exist in the database,\n\ @code{getgrnam} returns 0.\n\ @end deftypefn") { octave_value_list retval; retval(1) = std::string (); retval(0) = 0; int nargin = args.length (); if (nargin == 1) { std::string s = args(0).string_value (); if (! error_state) { std::string msg; retval(1) = msg; retval(0) = mk_gr_map (octave_group::getgrnam (s.c_str (), msg)); } } else print_usage (); return retval; } DEFUN (setgrent, args, , "-*- texinfo -*-\n\ @deftypefn {Built-in Function} {} setgrent ()\n\ Return the internal pointer to the beginning of the group database.\n\ @end deftypefn") { octave_value_list retval; retval(1) = std::string (); retval(0) = -1.0; int nargin = args.length (); if (nargin == 0) { std::string msg; retval(1) = msg; retval(0) = static_cast<double> (octave_group::setgrent (msg)); } else print_usage (); return retval; } DEFUN (endgrent, args, , "-*- texinfo -*-\n\ @deftypefn {Built-in Function} {} endgrent ()\n\ Close the group database.\n\ @end deftypefn") { octave_value_list retval; retval(1) = std::string (); retval(0) = -1.0; int nargin = args.length (); if (nargin == 0) { std::string msg; retval(1) = msg; retval(0) = static_cast<double> (octave_group::endgrent (msg)); } else print_usage (); return retval; }