Add GPG-wrapper script for Git

gpg/git_gpg_wrapper.py

@@ -0,0 +1,31 @@
+#!/usr/bin/env python
+import sys
+import subprocess as sp
+import time
+import logging
+import os
+
+import signer
+
+logging.basicConfig(level=logging.DEBUG,
+                    format='%(asctime)s %(levelname)-10s %(message)s')
+
+def main():
+    args = sys.argv[1:]
+    if '--verify' in args:
+        sp.check_call(['gpg2'] + args)
+    else:
+        user_id = os.environ['GPG_USER_ID']
+        user_id = user_id.encode('ascii')
+        pubkey = signer.load_from_gpg(user_id)
+        s = signer.Signer(user_id=user_id, created=pubkey['created'])
+        assert s.key_id() == pubkey['key_id']
+
+        data = sys.stdin.read()
+        sig = s.sign(data)
+        sig = signer.armor(sig, 'SIGNATURE')
+        sys.stdout.write(sig)
+        s.close()
+
+if __name__ == '__main__':
+    main()