update packages

[CreaPhase.git] / octave_packages / m / miscellaneous / fileparts.m

diff --git a/octave_packages/m/miscellaneous/fileparts.m b/octave_packages/m/miscellaneous/fileparts.m
new file mode 100644 (file)
index 0000000..cc33edb
--- /dev/null
+++ b/octave_packages/m/miscellaneous/fileparts.m
@@ -0,0 +1,96 @@
+## Copyright (C) 2003-2012 John W. Eaton
+##
+## 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
+## <http://www.gnu.org/licenses/>.
+
+## -*- texinfo -*-
+## @deftypefn {Function File} {[@var{dir}, @var{name}, @var{ext}, @var{ver}] =} fileparts (@var{filename})
+## Return the directory, name, extension, and version components of
+## @var{filename}.
+## @seealso{fullfile}
+## @end deftypefn
+
+function [directory, name, extension, version] = fileparts (filename)
+
+  if (nargin == 1)
+    if (ischar (filename))
+      ds = strchr (filename, filesep ("all"), 1, "last");
+      if (isempty (ds))
+        ds = 0;
+      endif
+      es = rindex (filename, ".");
+      ## These can be the same if they are both 0 (no dir or ext).
+      if (es <= ds)
+        es = length(filename)+1;
+      endif
+      if (ds == 0)
+        directory = "";
+      elseif (ds == 1)
+        directory = filename(1);
+      else
+        directory = filename(1:ds-1);
+      endif
+      name = filename(ds+1:es-1);
+      if (es > 0 && es <= length (filename))
+        extension = filename(es:end);
+      else
+        extension = "";
+      endif
+      version = "";
+    else
+      error ("fileparts: expecting FILENAME argument to be a string");
+    endif
+  else
+    print_usage ();
+  endif
+
+endfunction
+
+%!test
+%! [d, n, e] = fileparts ("file");
+%! assert (strcmp (d, "") && strcmp (n, "file") && strcmp (e, ""));
+
+%!test
+%! [d, n, e] = fileparts ("file.ext");
+%! assert (strcmp (d, "") && strcmp (n, "file") && strcmp (e, ".ext"));
+
+%!test
+%! [d, n, e] = fileparts ("/file.ext");
+%! assert (strcmp (d, "/") && strcmp (n, "file") && strcmp (e, ".ext"));
+
+%!test
+%! [d, n, e] = fileparts ("dir/file.ext");
+%! assert (strcmp (d, "dir") && strcmp (n, "file") && strcmp (e, ".ext"));
+
+%!test
+%! [d, n, e] = fileparts ("./file.ext");
+%! assert (strcmp (d, ".") && strcmp (n, "file") && strcmp (e, ".ext"));
+
+%!test
+%! [d, n, e] = fileparts ("d1/d2/file.ext");
+%! assert (strcmp (d, "d1/d2") && strcmp (n, "file") && strcmp (e, ".ext"));
+
+%!test
+%! [d, n, e] = fileparts ("/d1/d2/file.ext");
+%! assert (strcmp (d, "/d1/d2") && strcmp (n, "file") && strcmp (e, ".ext"));
+
+%!test
+%! [d, n, e] = fileparts ("/.ext");
+%! assert (strcmp (d, "/") && strcmp (n, char (zeros (1, 0))) && strcmp (e, ".ext"));
+
+%!test
+%! [d, n, e] = fileparts (".ext");
+%! assert (strcmp (d, "") && strcmp (n, char (zeros (1, 0))) && strcmp (e, ".ext"));