Mercurial > octave
view libinterp/corefcn/md5sum.cc @ 20909:03e4ddd49396
omit unnecessary nargout checks
* paramdemo.cc, __ichol__.cc, __ilu__.cc, balance.cc, dassl.cc,
eig.cc, ellipj.cc, filter.cc, givens.cc, hess.cc, lsode.cc, lu.cc,
mgorth.cc, nproc.cc, pr-output.cc, quad.cc, quadcc.cc, sylvester.cc,
urlwrite.cc, variables.cc, ccolamd.cc, colamd.cc, qr.cc: Don't call
print_usage based on value of nargout. If nargout doesn't alter
function behavior and returning extra values is inexpensive, simply
return them instead of checking nargout.
author | John W. Eaton <jwe@octave.org> |
---|---|
date | Wed, 16 Dec 2015 11:41:11 -0500 |
parents | 1142cf6abc0d |
children |
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/* Copyright (C) 2007-2015 David Bateman 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 <vector> #include "defun.h" #include "file-stat.h" #include "file-ops.h" #include "load-path.h" #include "oct-env.h" #include "oct-md5.h" #include "utils.h" DEFUN (md5sum, args, , "-*- texinfo -*-\n\ @deftypefn {} {} md5sum (@var{file})\n\ @deftypefnx {} {} md5sum (@var{str}, @var{opt})\n\ Calculate the MD5 sum of the file @var{file}.\n\ \n\ If the second parameter @var{opt} exists and is true, then calculate the MD5\n\ sum of the string @var{str}.\n\ @end deftypefn") { octave_value retval; int nargin = args.length (); if (nargin != 1 && nargin != 2) print_usage (); bool have_str = false; std::string str = args(0).string_value (); if (nargin == 2) have_str = args(1).bool_value (); if (have_str) retval = oct_md5 (str); else { std::string fname = file_ops::tilde_expand (str); fname = find_data_file_in_load_path ("md5sum", fname); retval = oct_md5_file (fname); } return retval; } /* %!assert (md5sum ("abc\0", true), "147a664a2ca9410911e61986d3f0d52a"); %!test %! tfile = tempname (); %! fid = fopen (tfile, "wb"); %! fwrite (fid, "abc\0"); %! fclose (fid); %! assert (md5sum (tfile), "147a664a2ca9410911e61986d3f0d52a"); %! unlink (tfile); %!error md5sum (); */