Merge remote-tracking branch 'ivan/bug/4000_support-non-ascii' into develop

1 files changed, 44 insertions, 0 deletions

diff --git a/src/leap/mail/utils.py b/src/leap/mail/utils.py
new file mode 100644
index 0000000..22e16a7
--- /dev/null
+++ b/src/leap/mail/utils.py
@@ -0,0 +1,44 @@
+# -*- coding: utf-8 -*-
+# utils.py
+# Copyright (C) 2013 LEAP
+#
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# This program 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 General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program.  If not, see <http://www.gnu.org/licenses/>.
+"""
+Utility functions for email.
+"""
+import email
+import re
+
+
+def get_email_charset(content):
+    """
+    Mini parser to retrieve the charset of an email.
+
+    :param content: mail contents
+    :type content: unicode
+
+    :returns: the charset as parsed from the contents
+    :rtype: str
+    """
+    charset = "UTF-8"
+    try:
+        em = email.message_from_string(content.encode("utf-8"))
+        # Miniparser for: Content-Type: <something>; charset=<charset>
+        charset_re = r'''charset=(?P<charset>[\w|\d|-]*)'''
+        charset = re.findall(charset_re, em["Content-Type"])[0]
+        if charset is None or len(charset) == 0:
+            charset = "UTF-8"
+    except Exception:
+        pass
+    return charset