/usr/share/octave/packages/optim-1.4.1/private/__read_options__.m is in octave-optim 1.4.1-2.
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 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 | ## Copyright (C) 2002 Etienne Grossmann <etienne@egdn.net>
##
## 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{op}, @var{nread}] =} __read_options__ (@var{args}, @var{varargin})
## Undocumented internal function.
## @end deftypefn
function [op,nread] = __read_options__ (args, varargin) ## pos 2.1.39
verbose = 0;
op = struct (); # Empty struct
op0 = op1 = " ";
skipnan = prefix = quiet = nocase = quiet = 0;
extra = "";
nargs = nargin-1; # nargin is now a function
if rem (nargs, 2), error ("odd number of optional args"); endif
i=1;
while i<nargs
if ! ischar (tmp = varargin{i}), error ("non-string option"); endif
i = i+1;
if strcmp (tmp, "op0") , op0 = varargin{i}; i=i+1;
elseif strcmp (tmp, "op1") , op1 = varargin{i}; i=i+1;
elseif strcmp (tmp, "extra") , extra = varargin{i}; i=i+1;
elseif strcmp (tmp, "default"), op = varargin{i}; i=i+1;
elseif strcmp (tmp, "prefix") , prefix = varargin{i}; i=i+1;
elseif strcmp (tmp, "nocase") , nocase = varargin{i}; i=i+1;
elseif strcmp (tmp, "quiet") , quiet = varargin{i}; i=i+1;
elseif strcmp (tmp, "skipnan"), skipnan = varargin{i}; i=i+1;
elseif strcmp (tmp, "verbose"), verbose = varargin{i}; i=i+1;
else
error ("unknown option '%s' for option-reading function!",tmp);
endif
endwhile
if length (op0) + length (op1) < 3
error ("Either 'op0' or 'op1' should be specified");
endif
if length (op0)
if op0(1) != " ", op0 = [" ",op0]; endif
if op0(length(op0)) != " ", op0 = [op0," "]; endif
endif
if length (op1)
if op1(1) != " ", op1 = [" ",op1]; endif
if op1(length(op1)) != " ", op1 = [op1," "]; endif
endif
if length (extra)
lextra = lgrep (cellstr (strsplit (extra, " ")));
else
lextra = {};
endif
opts = [op0,op1]; # Join options
# Before iend : opts w/out arg. After, opts
iend = length (op0); # w/ arg
spi = find (opts == " ");
opts_orig = opts;
if nocase, opts = tolower (opts); endif
nread = 0;
optread = 0;
while nread < length (args)
oname = name = args{++nread};
if ! ischar (name) # Whoa! Option name is not a string
if !optread && length (lextra)
op.(lextra{1}) = args{nread};
lextra = lextra(2:length(lextra));
continue
elseif quiet, nread--; return;
else error ("option name in pos %i is not a string",nread);
endif
else
optread = 1;
endif
if nocase, name = tolower (name); endif
ii = findstr ([" ",name], opts);
if isempty (ii) # Whoa! Unknown option name
if quiet, nread--; return;
else error ("unknown option '%s'",oname);
endif
endif
ii++;
if length (ii) > 1 # Ambiguous option name
fullen = zeros (1,length (ii)); # Full length of each optio
tmp = correct = "";
j = 0;
for i = ii
fullen(++j) = spi(find (spi > i,1))-i ;
tmp = [tmp,"', '",opts(i:i+fullen(j)-1)];
endfor
tmp = tmp(5:length(tmp));
if sum (fullen == min (fullen)) > 1 || ...
((min (fullen) != length(name)) && ! prefix) ,
error ("ambiguous option '%s'. Could be '%s'",oname,tmp);
endif
j = find (fullen == min (fullen), 1);
ii = ii(j);
endif
# Full name of option (w/ correct case)
fullname = opts_orig(ii:spi(find (spi > ii, 1))-1);
if ii < iend
if verbose, printf ("read_options : found boolean '%s'\n",fullname); endif
op.(fullname) = 1;
else
if verbose, printf ("read_options : found '%s'\n",fullname); endif
if nread < length (args)
tmp = args{++nread};
if verbose, printf ("read_options : size is %i x %i\n",size(tmp)); endif
if !isnumeric (tmp) || !all (isnan (tmp(:))) || ...
!isfield (op, fullname)
op.(fullname) = tmp;
else
if verbose, printf ("read_options : ignoring nan\n"); endif
endif
else
error ("options end before I can read value of option '%s'",oname);
endif
endif
endwhile
endfunction
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