1 files changed, 16 insertions, 0 deletions
diff --git a/g2h/file.py b/g2h/file.py
new file mode 100644
index 0000000..8f683cd
--- /dev/null
+++ b/g2h/file.py
@@ -0,0 +1,16 @@
+import os
+
+def sanitize_file_name(file_name, files):
+    if not file_name.startswith('.'):
+        return file_name
+
+    file_names = [ f.name for f in files ]
+    for i in range(1, 10):
+        new_name = file_name.replace('.', '_' * i, 1)
+        if not new_name in file_names:
+            return new_name
+
+    raise RuntimeError('Couldn not find unused sanitized file name')
+
+def tree_join(commit, path):
+    return os.path.join(commit.hexsha, 't', path)