Add a useful package (from Source forge) for octave

[CreaPhase.git] / octave_packages / zenity-0.5.7 / zenity_file_selection.m

diff --git a/octave_packages/zenity-0.5.7/zenity_file_selection.m b/octave_packages/zenity-0.5.7/zenity_file_selection.m
new file mode 100644 (file)
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+## Copyright (C) 2006 Søren Hauberg
+## 
+## This program 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 2 of the License, or
+## (at your option) any later version.
+## 
+## This program 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 this program; If not, see <http://www.gnu.org/licenses/>.
+
+## -*- texinfo -*-
+## @deftypefn  {Function File} zenity_file_selection(@var{title}, @var{option1}, ...)
+## Opens a file selection dialog.
+## The variable @var{title} sets the title of the file selection window.
+## The optional string arguments can be
+## @table @samp
+## @item save
+## The file selection dialog is a dialog for saving files.
+## @item multiple
+## It is possible to select multiple files.
+## @item directory
+## It is possible to select directories as well as files.
+## @item Anything else
+## The argument will be the default selected file.
+## @end table
+## and @code{error}.
+##
+## @seealso{zenity_calendar, zenity_list, zenity_progress, zenity_entry, zenity_message,
+## zenity_text_info, zenity_notification}
+## @end deftypefn
+
+function files = zenity_file_selection(title, varargin)
+  
+  save = multiple = directory = filename = title = "";
+  if (nargin == 0 || isempty(title)), title = "Select a file"; endif
+  for i = 1:length(varargin)
+    option = varargin{i};
+    isc = ischar(option);
+    if (isc && strcmpi(option, "save"))
+      save = "--save";
+    elseif (isc && strcmpi(option, "multiple"))
+      multiple = "--multiple";
+    elseif (isc && strcmpi(option, "directory"))
+      directory = "--directory";
+    elseif (isc)
+      filename = sprintf('--filename="%s"', varargin{i});
+    else
+      error("zenity_file_selection: unsupported option");
+    endif
+  endfor
+  
+  cmd = sprintf('zenity --file-selection --title="%s" --separator=":" %s %s %s %s', ...
+                 title, save, multiple, directory, filename);
+  [status, output] = system(cmd);
+  if (status == 0)
+    if (length(output) > 0 && output(end) == "\n")
+      output = output(1:end-1);
+    endif
+    idx = strfind(output, ":");
+    idx = [0, idx, length(output)+1];
+    l = length(idx);
+    if (l == 2)
+      files = output;
+    else
+      files = cell(1, l-1);
+      for i = 1:l-1
+        files{i} = output((idx(i)+1):(idx(i+1)-1));
+      endfor
+    endif
+  elseif (status == 1)
+    files = "";
+  else
+    error("zenity_file_selection: %s", output);
+  endif
+endfunction