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-rw-r--r--python/fatcat_tools/fcid.py17
1 files changed, 17 insertions, 0 deletions
diff --git a/python/fatcat_tools/fcid.py b/python/fatcat_tools/fcid.py
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--- /dev/null
+++ b/python/fatcat_tools/fcid.py
@@ -0,0 +1,17 @@
+
+import base64
+import uuid
+
+def fcid2uuid(s):
+ s = s.split('_')[-1].upper().encode('utf-8')
+ assert len(s) == 26
+ raw = base64.b32decode(s + b"======")
+ return str(uuid.UUID(bytes=raw)).lower()
+
+def uuid2fcid(s):
+ raw = uuid.UUID(s).bytes
+ return base64.b32encode(raw)[:26].lower().decode('utf-8')
+
+def test_fcid():
+ test_uuid = '00000000-0000-0000-3333-000000000001'
+ assert test_uuid == fcid2uuid(uuid2fcid(test_uuid))