Mercurial > octave-nkf
view libinterp/corefcn/getpwent.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 |
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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/>. */ #ifdef HAVE_CONFIG_H #include <config.h> #endif #include <string> #include <sys/types.h> #include "oct-passwd.h" #include "defun.h" #include "error.h" #include "gripes.h" #include "oct-map.h" #include "ov.h" #include "oct-obj.h" #include "utils.h" // Password file functions. (Why not?) static octave_value mk_pw_map (const octave_passwd& pw) { octave_value retval; if (pw) { octave_scalar_map m; m.assign ("name", pw.name ()); m.assign ("passwd", pw.passwd ()); m.assign ("uid", static_cast<double> (pw.uid ())); m.assign ("gid", static_cast<double> (pw.gid ())); m.assign ("gecos", pw.gecos ()); m.assign ("dir", pw.dir ()); m.assign ("shell", pw.shell ()); retval = m; } else retval = 0; return retval; } DEFUN (getpwent, args, , "-*- texinfo -*-\n\ @deftypefn {Built-in Function} {@var{pw_struct} =} getpwent ()\n\ Return a structure containing an entry from the password database,\n\ opening it if necessary. Once the end of the data has been reached,\n\ @code{getpwent} 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_pw_map (octave_passwd::getpwent (msg)); } else print_usage (); return retval; } DEFUN (getpwuid, args, , "-*- texinfo -*-\n\ @deftypefn {Built-in Function} {@var{pw_struct} =} getpwuid (@var{uid}).\n\ Return a structure containing the first entry from the password database\n\ with the user ID @var{uid}. If the user ID does not exist in the\n\ database, @code{getpwuid} 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) { uid_t uid = static_cast<uid_t> (dval); std::string msg; retval(1) = msg; retval(0) = mk_pw_map (octave_passwd::getpwuid (uid, msg)); } else error ("getpwuid: UID must be an integer"); } } else print_usage (); return retval; } DEFUN (getpwnam, args, , "-*- texinfo -*-\n\ @deftypefn {Built-in Function} {@var{pw_struct} =} getpwnam (@var{name})\n\ Return a structure containing the first entry from the password database\n\ with the user name @var{name}. If the user name does not exist in the\n\ database, @code{getpwname} returns 0.\n\ @end deftypefn") { octave_value_list retval; retval(1) = std::string (); retval(0) = 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_pw_map (octave_passwd::getpwnam (s, msg)); } } else print_usage (); return retval; } DEFUN (setpwent, args, , "-*- texinfo -*-\n\ @deftypefn {Built-in Function} {} setpwent ()\n\ Return the internal pointer to the beginning of the password 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_passwd::setpwent (msg)); } else print_usage (); return retval; } DEFUN (endpwent, args, , "-*- texinfo -*-\n\ @deftypefn {Built-in Function} {} endpwent ()\n\ Close the password 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_passwd::endpwent (msg)); } else print_usage (); return retval; }