1 files changed, 31 insertions, 0 deletions
diff --git a/application/basilisk/themes/preprocess-tab-svgs.py b/application/basilisk/themes/preprocess-tab-svgs.py
new file mode 100644
index 0000000000..ab3e6ca880
--- /dev/null
+++ b/application/basilisk/themes/preprocess-tab-svgs.py
@@ -0,0 +1,31 @@
+#!/usr/bin/env python
+
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+import buildconfig
+
+from mozbuild.preprocessor import preprocess
+
+# By default, the pre-processor used for jar.mn will use "%" as a marker
+# for ".css" files and "#" otherwise. This falls apart when a file using
+# one marker needs to include a file with the other marker since the
+# pre-processor instructions in the included file will not be
+# processed. The following SVG files need to include a file which uses
+# "%" as the marker so we invoke the pre- processor ourselves here with
+# the marker specified. The resulting SVG files will get packaged by the
+# processing of the jar file in the appropriate directory.
+def _do_preprocessing(output_svg, input_svg_file, additional_defines):
+    additional_defines.update(buildconfig.defines)
+    return preprocess(output=output_svg,
+                      includes=[input_svg_file],
+                      marker='%',
+                      defines=additional_defines)
+
+def tab_side_start(output_svg, input_svg_file):
+    return _do_preprocessing(output_svg, input_svg_file, {'TAB_SIDE': 'start'})
+
+def tab_side_end(output_svg, input_svg_file):
+    return _do_preprocessing(output_svg, input_svg_file, {'TAB_SIDE': 'end'})
+