1 files changed, 53 insertions, 0 deletions
diff --git a/lang/python/src/util.py b/lang/python/src/util.py
new file mode 100644
index 00000000..e4fca4c1
--- /dev/null
+++ b/lang/python/src/util.py
@@ -0,0 +1,53 @@
+# Copyright (C) 2016 g10 Code GmbH
+# Copyright (C) 2004,2008 Igor Belyi <[email protected]>
+# Copyright (C) 2002 John Goerzen <[email protected]>
+#
+#    This library is free software; you can redistribute it and/or
+#    modify it under the terms of the GNU Lesser General Public
+#    License as published by the Free Software Foundation; either
+#    version 2.1 of the License, or (at your option) any later version.
+#
+#    This library is distributed in the hope that it will be useful,
+#    but WITHOUT ANY WARRANTY; without even the implied warranty of
+#    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+#    Lesser General Public License for more details.
+#
+#    You should have received a copy of the GNU Lesser General Public
+#    License along with this library; if not, write to the Free Software
+#    Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307  USA
+
+from __future__ import absolute_import, print_function, unicode_literals
+del absolute_import, print_function, unicode_literals
+
+import sys
+
+def process_constants(prefix, scope):
+    """Called by the constant modules to load up the constants from the C
+    library starting with PREFIX.  Matching constants will be inserted
+    into SCOPE with PREFIX stripped from the names.  Returns the names
+    of inserted constants.
+
+    """
+    from . import gpgme
+    index = len(prefix)
+    constants = {identifier[index:]: getattr(gpgme, identifier)
+                 for identifier in dir(gpgme)
+                 if identifier.startswith(prefix)}
+    scope.update(constants)
+    return list(constants.keys())
+
+def percent_escape(s):
+    return ''.join(
+        '%{0:2x}'.format(ord(c))
+        if c == '+' or c == '"' or c == '%' or ord(c) <= 0x20 else c
+        for c in s)
+
+# Python2/3 compatibility
+if sys.version_info[0] == 3:
+    # Python3
+    def is_a_string(x):
+        return isinstance(x, str)
+else:
+    # Python2
+    def is_a_string(x):
+        return isinstance(x, basestring)