1 files changed, 23 insertions, 0 deletions
diff --git a/addon-sdk/source/python-lib/cuddlefish/util.py b/addon-sdk/source/python-lib/cuddlefish/util.py
new file mode 100644
index 000000000..513495a69
--- /dev/null
+++ b/addon-sdk/source/python-lib/cuddlefish/util.py
@@ -0,0 +1,23 @@
+# 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/.
+
+
+IGNORED_FILE_PREFIXES = ["."]
+IGNORED_FILE_SUFFIXES = ["~", ".swp"]
+IGNORED_DIRS = [".git", ".svn", ".hg"]
+
+def filter_filenames(filenames, ignored_files=[".hgignore"]):
+    for filename in filenames:
+        if filename in ignored_files:
+            continue
+        if any([filename.startswith(suffix)
+                for suffix in IGNORED_FILE_PREFIXES]):
+            continue
+        if any([filename.endswith(suffix)
+                for suffix in IGNORED_FILE_SUFFIXES]):
+            continue
+        yield filename
+
+def filter_dirnames(dirnames):
+    return [dirname for dirname in dirnames if dirname not in IGNORED_DIRS]