Mercurial > octave-dspies
view libinterp/corefcn/getgrent.cc @ 19010:3fb030666878 draft default tip dspies
Added special-case logical-indexing function
* logical-index.h (New file) : Logical-indexing function. May be called on
octave_value types via call_bool_index
* nz-iterators.h : Add base-class nz_iterator for iterator types. Array has
template bool for whether to internally store row-col or compute on the fly
Add skip_ahead method which skips forward to the next nonzero after its
argument
Add flat_index for computing octave_idx_type index of current position (with
assertion failure in the case of overflow)
Move is_zero to separate file
* ov-base-diag.cc, ov-base-mat.cc, ov-base-sparse.cc, ov-perm.cc
(do_index_op): Add call to call_bool_index in logical-index.h
* Array.h : Move forward-declaration for array_iterator to separate header file
* dim-vector.cc (dim_max): Refers to idx-bounds.h (max_idx)
* array-iter-decl.h (New file): Header file for forward declaration of
array-iterator
* direction.h : Add constants fdirc and bdirc to avoid having to reconstruct
them
* dv-utils.h, dv-utils.cc (New files) :
Utility functions for querying and constructing dim-vectors
* idx-bounds.h (New file) :
Utility constants and functions for determining whether things will overflow
the maximum allowed bounds
* interp-idx.h (New function : to_flat_idx) : Converts row-col pair to linear
index of octave_idx_type
* is-zero.h (New file) : Function for determining whether an element is zero
* logical-index.tst : Add tests for correct return-value dimensions and large
sparse matrix behavior
author | David Spies <dnspies@gmail.com> |
---|---|
date | Fri, 25 Jul 2014 13:39:31 -0600 |
parents | 175b392e91fe |
children |
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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-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; }