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annotate scripts/general/nargchk.m @ 20305:c164cfc24bdd

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QtHandles: add annotations dialog * libgui/graphics/annotation-dialog.h: new file * libgui/graphics/annotation-dialog.cc: new file * libgui/graphics/annotation-dialog.ui: new file * libgui/graphics/Canvas.cc (canvasMousePressEvent): call annotation_dialog when in TextMode. * libgui/graphics/module.mk: add annotation-dialog to build
author John Donoghue <john.donoghue@ieee.org>
date Sun, 19 Apr 2015 09:54:54 -0400
parents 4197fc428c7d
children 7503499a252b
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4197fc428c7d maint: Update copyright notices for 2015.
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1 ## Copyright (C) 2008-2015 Bill Denney
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2 ##
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3 ## This file is part of Octave.
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4 ##
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5 ## Octave is free software; you can redistribute it and/or modify it
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6 ## under the terms of the GNU General Public License as published by
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7 ## the Free Software Foundation; either version 3 of the License, or (at
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8 ## your option) any later version.
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9 ##
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10 ## Octave is distributed in the hope that it will be useful, but
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11 ## WITHOUT ANY WARRANTY; without even the implied warranty of
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12 ## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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13 ## General Public License for more details.
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14 ##
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15 ## You should have received a copy of the GNU General Public License
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16 ## along with Octave; see the file COPYING. If not, see
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17 ## <http://www.gnu.org/licenses/>.
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18
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19 ## -*- texinfo -*-
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20 ## @deftypefn {Function File} {@var{msgstr} =} nargchk (@var{minargs}, @var{maxargs}, @var{nargs})
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21 ## @deftypefnx {Function File} {@var{msgstr} =} nargchk (@var{minargs}, @var{maxargs}, @var{nargs}, "string")
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22 ## @deftypefnx {Function File} {@var{msgstruct} =} nargchk (@var{minargs}, @var{maxargs}, @var{nargs}, "struct")
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23 ## Return an appropriate error message string (or structure) if the
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24 ## number of inputs requested is invalid.
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25 ##
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26 ## This is useful for checking to see that the number of input arguments
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27 ## supplied to a function is within an acceptable range.
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28 ##
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29 ## @strong{Caution}: @code{nargchk} is scheduled for deprecation. Use
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30 ## @code{narginchk} in all new code.
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31 ## @seealso{nargoutchk, narginchk, error, nargin, nargout}
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32 ## @end deftypefn
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34 ## Author: Bill Denney <bill@denney.ws>
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36 function msg = nargchk (minargs, maxargs, nargs, outtype = "string")
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38 if (nargin < 3 || nargin > 4)
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39 print_usage ();
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40 elseif (minargs > maxargs)
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41 error ("nargchk: MINARGS must be <= MAXARGS");
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42 elseif (! any (strcmpi (outtype, {"string", "struct"})))
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43 error ('nargchk: output type must be either "string" or "struct"');
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44 elseif (! (isscalar (minargs) && isscalar (maxargs) && isscalar (nargs)))
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45 error ("nargchk: MINARGS, MAXARGS, and NARGS must be scalars");
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46 endif
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48 msg = struct ("message", "", "identifier", "");
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49 if (nargs < minargs)
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50 msg.message = "not enough input arguments";
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51 msg.identifier = "Octave:nargchk:not-enough-inputs";
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52 elseif (nargs > maxargs)
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53 msg.message = "too many input arguments";
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54 msg.identifier = "Octave:nargchk:too-many-inputs";
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55 endif
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57 if (strcmpi (outtype, "string"))
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58 msg = msg.message;
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59 elseif (isempty (msg.message))
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60 ## Compatability: Matlab returns a 0x1 empty struct when nargchk passes
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61 msg = resize (msg, 0, 1);
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62 endif
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64 endfunction
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67 ## Tests
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68 %!shared stnul, stmin, stmax
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69 %! stnul = resize (struct ("message", "", "identifier", ""), 0, 1);
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70 %! stmin = struct ("message", "not enough input arguments",
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71 %! "identifier", "Octave:nargchk:not-enough-inputs");
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72 %! stmax = struct ("message", "too many input arguments",
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73 %! "identifier", "Octave:nargchk:too-many-inputs");
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74 %!assert (nargchk (0, 1, 0), "")
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75 %!assert (nargchk (0, 1, 1), "")
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76 %!assert (nargchk (1, 1, 0), "not enough input arguments")
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77 %!assert (nargchk (0, 1, 2), "too many input arguments")
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78 %!assert (nargchk (0, 1, 2, "string"), "too many input arguments")
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79 ## Struct outputs
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80 %!assert (nargchk (0, 1, 0, "struct"), stnul)
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81 %!assert (nargchk (0, 1, 1, "struct"), stnul)
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82 %!assert (nargchk (1, 1, 0, "struct"), stmin)
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83 %!assert (nargchk (0, 1, 2, "struct"), stmax)
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