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maint: Update copyright notices for 2015.
author John W. Eaton <jwe@octave.org>
date Wed, 11 Feb 2015 14:19:08 -0500
parents 0e1f5a750d00
children 9fc020886ae9
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19898
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1 ## Copyright (C) 2007-2015 David Bateman
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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 {Command} {} run @var{script}
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21 ## @deftypefnx {Function File} {} run ("@var{script}")
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22 ## Run @var{script} in the current workspace.
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23 ##
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24 ## Scripts which reside in directories specified in Octave's load
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25 ## path, and which end with the extension @file{".m"}, can be run simply by
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26 ## typing their name. For scripts not located on the load path, use @code{run}.
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27 ##
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28 ## The file name @var{script} can be a bare, fully qualified, or relative
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29 ## filename and with or without a file extension. If no extension is specified,
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30 ## Octave will first search for a script with the @file{".m"} extension before
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31 ## falling back to the script name without an extension.
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32 ##
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33 ## Implementation Note: If @var{script} includes a path component, then
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34 ## @code{run} first changes the working directory to the directory where
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35 ## @var{script} is found. Next, the script is executed. Finally, @code{run}
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36 ## returns to the original working directory unless @code{script} has
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37 ## specifically changed directories.
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38 ## @seealso{path, addpath, source}
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39 ## @end deftypefn
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40
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41 function run (script)
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42
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43 if (nargin != 1)
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44 print_usage ();
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45 endif
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46
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47 [d, f, ext] = fileparts (script);
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48 if (! strcmp (ext, ".m"))
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49 ## prefer files with .m extension for compatibility with Matlab
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50 if (exist ([script ".m"], "file"))
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51 f = [f ext];
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52 ext = ".m";
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53 script = [script ".m"];
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54 endif
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55 endif
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56
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57 if (! exist (script, "file"))
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58 error ("run: file SCRIPT must exist and be a valid Octave scriptfile");
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59 endif
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60
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61 if (! isempty (d))
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62 if (exist (d, "dir"))
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63 startdir = pwd ();
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64 d = canonicalize_file_name (d);
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65 unwind_protect
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66 cd (d);
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67 evalin ("caller", sprintf ('source ("%s%s");', f, ext),
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68 "rethrow (lasterror ())");
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69 unwind_protect_cleanup
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70 if (strcmp (d, pwd ()))
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71 cd (startdir);
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72 endif
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73 end_unwind_protect
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74 else
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75 error ("run: the path %s doesn't exist", d);
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76 endif
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77 else
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78 if (! isempty (ext))
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79 script = which (script);
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80 else
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81 ## Search PATH with null extension ('.' will be stripped and ext = "")
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82 script = which ([script "."]);
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83 endif
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84 evalin ("caller", sprintf ('source ("%s");', script),
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85 "rethrow (lasterror ())");
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86 endif
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87 endfunction
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88
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89
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90 %% Test input validation
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91 %!error run ()
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92 %!error run ("a", "b")
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93 %!error <SCRIPT must exist> run ("__A_very_#unlikely#_file_name__")
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94