Mercurial > octave
view scripts/miscellaneous/open.m @ 33562:67d22dc78b80 bytecode-interpreter tip
maint: Merge default to bytecode-interpreter
author | Arun Giridhar <arungiridhar@gmail.com> |
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date | Fri, 10 May 2024 11:27:56 -0400 |
parents | 2e484f9f1f18 |
children |
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######################################################################## ## ## Copyright (C) 2014-2024 The Octave Project Developers ## ## See the file COPYRIGHT.md in the top-level directory of this ## distribution or <https://octave.org/copyright/>. ## ## This file is part of Octave. ## ## Octave 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. ## ## Octave 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 Octave; see the file COPYING. If not, see ## <https://www.gnu.org/licenses/>. ## ######################################################################## ## -*- texinfo -*- ## @deftypefn {} {} open @var{file} ## @deftypefnx {} {@var{output} =} open (@var{file}) ## Open the file @var{file} in Octave or in an external application based on ## the file type as determined by the filename extension. ## ## By default, recognized file types are ## ## @table @code ## @item .m ## Open file in the editor. No @var{output} value is returned. ## ## @item .mat ## @itemx octave-workspace ## Open the data file with @code{load}. If no return value @var{output} ## is requested, variables are loaded in the base workspace. Otherwise ## @var{output} will be a structure containing loaded data. ## @xref{XREFload,,load function}. ## ## @item .ofig ## Open the figure with @code{hgload}. ## @xref{XREFhgload,,hgload function}. ## ## @item .fig, .ofig ## Load the figure ## ## @item .exe ## Execute the program (on Windows systems only). No @var{output} value ## is returned. ## @end table ## ## Custom file extensions may also be handled if a function @code{openxxx}, ## where @code{xxx} is the extension, is found in the load path. The function ## must accept the file name as input. For example, in order to load ## @nospell{@qcode{".dat"}} data files in the base workspace, as is done by ## default for @qcode{".mat"} files, one may define ## @nospell{@qcode{"opendat.m"}} with the following contents: ## ## @example ## @group ## function retval = opendat (fname) ## evalin ("base", sprintf ("load ('%s');", fname)); ## endfunction ## @end group ## @end example ## ## Other file types are opened in the appropriate external application. ## @end deftypefn function output = open (file) if (nargin < 1) print_usage (); endif if (! ischar (file)) error ("open: FILE must be a string"); endif if (! exist (file, "file")) error ("open: unable to find file %s", file); endif file = make_absolute_filename (tilde_expand (file)); [~, fname, ext] = fileparts (file); if (! isempty (ext) && any (exist (["open" lower(ext(2:end))]) == [2 3 5 103])) try openfcn = ["open" lower(ext(2:end))]; if (nargout > 0) output = feval (openfcn, file); else feval (openfcn, file); endif catch error ("open: %s", lasterr); end_try_catch elseif (strcmpi (ext, ".m")) edit (file); elseif (strcmpi (ext, ".mat") || strcmp (fname, "octave-workspace")) if (nargout > 0) output = load (file); else evalin ("base", sprintf ("load ('%s');", file)); endif elseif (strcmpi (ext, ".ofig")) if (nargout > 0) output = openfig (file); else openfig (file); endif elseif (any (strcmpi (ext, {".mdl", ".slx", ".prj"}))) error ("open: opening file type '%s' is not supported", ext); elseif (strcmpi (ext, ".exe")) if (ispc ()) dos (file); else error ("open: executing .exe files is only supported on Windows systems"); endif else __open_with_system_app__ (file); endif endfunction ## Test input validation %!error <Invalid call> open () %!error open ("abc", "def") %!error <FILE must be a string> open (1)