Mercurial > fem-fenics-eugenio
annotate inst/ufl.m @ 226:043120f071de
Correct help message for ufl
| author | Eugenio Gianniti <eugenio.gianniti@mail.polimi.it> |
|---|---|
| date | Fri, 23 May 2014 11:41:17 +0200 |
| parents | 72af6354bf02 |
| children | 8db0b8583615 |
| rev | line source |
|---|---|
| 220 | 1 ## Copyright (C) 2014 Eugenio Gianniti <eugenio.gianniti@mail.polimi.it> |
| 2 ## | |
| 3 ## This program is free software; you can redistribute it and/or modify it under | |
| 4 ## the terms of the GNU General Public License as published by the Free Software | |
| 5 ## Foundation; either version 3 of the License, or (at your option) any later | |
| 6 ## version. | |
| 7 ## | |
| 8 ## This program is distributed in the hope that it will be useful, but WITHOUT | |
| 9 ## ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
| 10 ## FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more | |
| 11 ## details. | |
| 12 ## | |
| 13 ## You should have received a copy of the GNU General Public License along with | |
| 14 ## this program; if not, see <http://www.gnu.org/licenses/>. | |
| 15 | |
| 16 ## -*- texinfo -*- | |
| 17 ## @deftypefn {Function File} ufl [command] line | |
| 18 ## | |
| 19 ## Writes the given line to a ufl file. Optional commands are: | |
| 20 ## @itemize @bullet | |
| 21 ## @item start: opens an ufl file. It is possible to specify a name for it, | |
| 22 ## otherwise 'default.ufl' will be used. | |
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23 ## @item end: closes the ufl file and compiles it. It is possible to |
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24 ## specify its @var{content}, otherwise a complete problem is assumed. |
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25 ## Possible options are: BilinearForm, Functional, FunctionSpace, LinearForm |
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26 ## and Problem. |
| 220 | 27 ## @end itemize |
| 28 ## | |
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29 ## @example |
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30 ## @code{ufl start linform} |
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31 ## @code{ufl element = FiniteElement ("Lagrange", triangle, 1)} |
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32 ## @code{ufl v = TestFunction (element)} |
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33 ## @code{ufl f = Coefficient (element)} |
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34 ## @code{ufl L = f*v*dx} |
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35 ## @code{ufl end LinearForm} |
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36 ## @end example |
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37 ## |
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38 ## This way you can write a ufl file and compile it obtaining a LinearForm. |
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39 ## |
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40 ## @seealso{import_ufl_Problem, import_ufl_BilinearForm, import_ufl_Functional, |
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41 ## import_ufl_FunctionSpace, import_ufl_LinearForm} |
| 220 | 42 ## @end deftypefn |
| 43 | |
| 44 function ufl (varargin) | |
| 45 | |
| 46 persistent fid = -1; | |
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47 persistent filename = "default.ufl"; |
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48 persistent opts = {"BilinearForm", |
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49 "Functional", |
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50 "FunctionSpace", |
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51 "LinearForm", |
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52 "Problem"}; |
| 220 | 53 |
| 54 if (numel (varargin) < 1) | |
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55 if (! is_valid_file_id (fid)) |
| 220 | 56 print_usage (); |
| 57 endif | |
| 58 elseif (! all (cellfun ("ischar", varargin))) | |
| 59 error ("ufl: all arguments should be strings"); | |
| 60 elseif (strcmpi (varargin{1}, "start")) | |
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61 if (is_valid_file_id (fid)) |
| 220 | 62 error ("ufl: a file is already open"); |
| 63 else | |
| 64 if (numel (varargin) > 1) | |
| 65 filename = varargin{2}; | |
| 66 if (isempty (regexpi (filename, ".ufl$", "match"))) | |
| 67 filename = [filename, ".ufl"]; | |
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68 else |
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69 filename = [filename(1:end-4), ".ufl"]; |
| 220 | 70 endif |
| 71 endif | |
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72 [~, err, ~] = stat (filename); |
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73 if (err == 0) |
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74 error (["ufl: a file named ", filename, " already exists"]); |
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75 else |
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76 fid = fopen (filename, "w"); |
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77 endif |
| 220 | 78 endif |
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79 if (! is_valid_file_id (fid)) |
| 220 | 80 error (["ufl: could not open file ", filename]); |
| 81 endif | |
| 82 elseif (strcmpi (varargin{1}, "end")) | |
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83 if (! is_valid_file_id (fid)) |
| 220 | 84 error ("ufl: no open file"); |
| 85 else | |
| 86 fclose (fid); | |
| 87 fid = -1; | |
| 88 endif | |
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89 compile = "Problem"; |
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90 if (numel (varargin) > 1) |
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91 compile = validatestring (varargin{2}, opts, "ufl", "content"); |
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92 endif |
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93 eval (["import_ufl_", compile, "(\"", filename(1:end-4), "\");"]); |
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94 filename = "default.ufl"; |
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95 elseif (! is_valid_file_id (fid)) |
| 220 | 96 error ("ufl: no open file"); |
| 97 else | |
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98 if (is_valid_file_id (fid)) |
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99 fprintf (fid, "%s ", varargin{:}); |
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100 fprintf (fid, "\n"); |
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101 else |
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102 error ("ufl: no open file"); |
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103 endif |
| 220 | 104 endif |
| 105 | |
| 106 endfunction |