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annotate scripts/help/__gripe_missing_component__.m @ 20595:c1a6c31ac29a

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eliminate more simple uses of error_state * ov-classdef.cc: Eliminate simple uses of error_state.
author John W. Eaton <jwe@octave.org>
date Tue, 06 Oct 2015 00:20:02 -0400
parents 4197fc428c7d
children
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4197fc428c7d maint: Update copyright notices for 2015.
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1 ## Copyright (C) 2013-2015 Mike Miller
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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} {} __gripe_missing_component__ (@var{caller}, @var{component})
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21 ## Undocumented internal function.
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22 ## @end deftypefn
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23
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24 function __gripe_missing_component__ (caller, component)
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25
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26 if (nargin != 2)
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27 print_usage ();
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28 endif
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29
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30 msg = "";
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31 fcn = missing_component_hook ();
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32
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33 ftype = exist (fcn);
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34 if (ftype == 2 || ftype == 3 || ftype == 5 || ftype == 103)
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35 msg = feval (fcn, component);
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36 endif
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37
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38 if (isempty (msg))
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39 switch (component)
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40 case "info-file"
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41 msg = "unable to find the Octave info manual, Octave installation is incomplete";
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42 case "mkoctfile"
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43 msg = "unable to find the mkoctfile command, Octave installation is incomplete";
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44 case "octave"
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45 msg = "unable to find the octave executable, Octave installation is incomplete";
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46 case "octave-config"
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47 msg = "unable to find the octave-config command, Octave installation is incomplete";
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48 otherwise
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49 msg = ['unable to find required Octave component "' component '"'];
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50 endswitch
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51 endif
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52
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53 error ("%s: %s\n", caller, msg);
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54
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55 endfunction
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56
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57
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58 ## Some trivial testing
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59 %!error <abc: unable to find the Octave info manual> __gripe_missing_component__ ("abc", "info-file")
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60 %!error <abc: unable to find the octave executable> __gripe_missing_component__ ("abc", "octave")
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61 %!error <abc: unable to find the octave-config command> __gripe_missing_component__ ("abc", "octave-config")
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62 %!error <abc: unable to find required Octave component "xyz"> __gripe_missing_component__ ("abc", "xyz")
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63
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64 %!error __gripe_missing_component__ ()
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65 %!error __gripe_missing_component__ ("fcn")
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66 %!error __gripe_missing_component__ ("fcn", 1 , 2)
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67