update packages

[CreaPhase.git] / octave_packages / m / plot / private / __gnuplot_has_feature__.m

diff --git a/octave_packages/m/plot/private/__gnuplot_has_feature__.m b/octave_packages/m/plot/private/__gnuplot_has_feature__.m
new file mode 100644 (file)
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+++ b/octave_packages/m/plot/private/__gnuplot_has_feature__.m
@@ -0,0 +1,61 @@
+## Copyright (C) 2009-2012 Ben Abbott
+##
+## 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{has_feature} =} __gnuplot_has_feature__ (@var{feature})
+## Undocumented internal function.
+## @end deftypefn
+
+## Author: Ben Abbott <bpabbott@mac.com>
+## Created: 2009-01-27
+
+function res = __gnuplot_has_feature__ (feature)
+  persistent features has_features
+  features = {"x11_figure_position",
+              "wxt_figure_size",
+              "transparent_patches",
+              "transparent_surface",
+              "epslatex_implies_eps_filesuffix",
+              "epslatexstandalone_terminal",
+              "screen_coordinates_for_{lrtb}margin",
+              "variable_GPVAL_TERMINALS",
+              "key_has_font_properties"};
+
+  if (isempty (has_features))
+    try
+      gnuplot_version = __gnuplot_version__ ();
+    catch
+      ## Don't throw an error if gnuplot isn't installed
+      gnuplot_version = "0.0.0";
+    end_try_catch
+    versions = {"4.2.5", "4.4", "4.4", "4.4", "4.2", "4.2", "4.4", "4.4", "4.4"};
+    operators = {">=", ">=", ">=", ">=", ">=", ">=", ">=", ">=", ">="};
+    have_features = logical (zeros (size (features)));
+    for n = 1 : numel (have_features)
+      has_features(n) = compare_versions (gnuplot_version, versions{n}, operators{n});
+    endfor
+  endif
+
+  n = find (strcmpi (feature, features));
+  if (isempty (n))
+    res = NaN;
+  else
+    res = has_features(n);
+  endif
+endfunction
+