--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/corefcn/getgrent.cc	Fri Jul 27 15:35:00 2012 -0700
@@ -0,0 +1,215 @@
+/*
+
+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 <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;
+}