1 files changed, 45 insertions, 0 deletions
diff --git a/gfx/angle/src/libANGLE/renderer/angle_format.py b/gfx/angle/src/libANGLE/renderer/angle_format.py
new file mode 100755
index 000000000..e46bc7dba
--- /dev/null
+++ b/gfx/angle/src/libANGLE/renderer/angle_format.py
@@ -0,0 +1,45 @@
+#!/usr/bin/python
+# Copyright 2016 The ANGLE Project Authors. All rights reserved.
+# Use of this source code is governed by a BSD-style license that can be
+# found in the LICENSE file.
+#
+# angle_format.py:
+#  Utils for ANGLE formats.
+
+import json
+import os
+
+def reject_duplicate_keys(pairs):
+    found_keys = {}
+    for key, value in pairs:
+        if key in found_keys:
+           raise ValueError("duplicate key: %r" % (key,))
+        else:
+           found_keys[key] = value
+    return found_keys
+
+def load_json(path):
+    with open(path) as map_file:
+        file_data = map_file.read()
+        map_file.close()
+        return json.loads(file_data, object_pairs_hook=reject_duplicate_keys)
+
+def load_forward_table(path):
+    pairs = load_json(path)
+    reject_duplicate_keys(pairs)
+    return { gl: angle for gl, angle in pairs }
+
+def load_inverse_table(path):
+    pairs = load_json(path)
+    reject_duplicate_keys(pairs)
+    return { angle: gl for gl, angle in pairs }
+
+def load_with_override(override_path):
+    map_path = os.path.join(os.path.dirname(os.path.realpath(__file__)), 'angle_format_map.json')
+    results = load_forward_table(map_path)
+    overrides = load_json(override_path)
+
+    for k, v in overrides.iteritems():
+        results[k] = v
+
+    return results