/usr/share/octave/packages/general-1.3.4/@inputParser/addOptional.m is in octave-general 1.3.4-2.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 | ## Copyright (C) 2011 Carnë Draug <carandraug+dev@gmail.com>
##
## This program 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.
##
## This program 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
## this program; if not, see <http://www.gnu.org/licenses/>.
## -*- texinfo -*-
## @deftypefn {Function File} {@var{parser} =} addOptional (@var{parser}, @var{argname}, @var{default})
## @deftypefnx {Function File} {@var{parser} =} @var{parser}.addOptional (@var{argname}, @var{default})
## @deftypefnx {Function File} {@var{parser} =} addOptional (@var{parser}, @var{argname}, @var{default}, @var{validator})
## @deftypefnx {Function File} {@var{parser} =} @var{parser}.addOptional (@var{argname}, @var{default}, @var{validator})
## Add new optional argument to the object @var{parser} of the class inputParser
## to implement an ordered arguments type of API
##
## @var{argname} must be a string with the name of the new argument. The order
## in which new arguments are added with @command{addOptional}, represents the
## expected order of arguments.
##
## @var{default} will be the value used when the argument is not specified.
##
## @var{validator} is an optional anonymous function to validate the given values
## for the argument with name @var{argname}. Alternatively, a function name
## can be used.
##
## See @command{help inputParser} for examples.
##
## @emph{Note}: if a string argument does not validate, it will be considered a
## ParamValue key. If an optional argument is not given a validator, anything
## will be valid, and so any string will be considered will be the value of the
## optional argument (in @sc{matlab}, if no validator is given and argument is
## a string it will also be considered a ParamValue key).
##
## @seealso{inputParser, @@inputParser/addParamValue, @@inputParser/addSwitch,
## @@inputParser/addParamValue, @@inputParser/addRequired, @@inputParser/parse}
## @end deftypefn
function inPar = addOptional (inPar, name, def, val)
## check @inputParser/subsref for the actual code
if (nargin == 3)
inPar = subsref (inPar, substruct(
'.' , 'addOptional',
'()', {name, def}
));
elseif (nargin == 4)
inPar = subsref (inPar, substruct(
'.' , 'addOptional',
'()', {name, def, val}
));
else
print_usage;
endif
endfunction
|