update packages

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

diff --git a/octave_packages/m/miscellaneous/run.m b/octave_packages/m/miscellaneous/run.m
new file mode 100644 (file)
index 0000000..3a7cf21
--- /dev/null
+++ b/octave_packages/m/miscellaneous/run.m
@@ -0,0 +1,61 @@
+## Copyright (C) 2007-2012 David Bateman
+##
+## 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  {Command} {} run @var{script}
+## @deftypefnx {Function File} {} run (@var{script})
+## Run scripts in the current workspace that are not necessarily on the
+## path.  If @var{script} is the script to run, including its path, then
+## @code{run} changes the directory to the directory where @var{script} is
+## found.  @code{run} then executes the script, and returns to the original
+## directory.
+## @seealso{system}
+## @end deftypefn
+
+function run (script)
+
+  if (nargin != 1)
+    print_usage ();
+  endif
+
+  [d, f, ext] = fileparts (script);
+  if (! isempty (d))
+    if (exist (d, "dir"))
+      wd = pwd ();
+      unwind_protect
+        cd (d);
+        if (! exist (cstrcat (f, ext), "file"))
+          error ("run: file SCRIPT must exist and be a valid Octave scriptfile");
+        endif
+        evalin ("caller", sprintf ("source (\"%s%s\");", f, ext),
+                "rethrow (lasterror ())");
+      unwind_protect_cleanup
+        cd (wd);
+      end_unwind_protect
+    else
+      error ("run: the path %s doesn't exist", d);
+    endif
+  else
+    if (exist (script, "file"))
+      evalin ("caller", sprintf ("source (\"%s\");", script),
+              "rethrow (lasterror ())");
+    else
+      error ("run: %s not found", script);
+    endif
+  endif
+endfunction