add a work-around the bug in encoding of attachement filename by FileMakerPro

docbow_project/docbow/management/commands/sendmail.py

@@ -3,6 +3,7 @@ import sys
 import email
 import email.errors
 import email.utils
+import email.header
 import logging
 
 from django.core.management.base import BaseCommand, CommandError
@@ -63,6 +64,17 @@ In case of failure the following return value is returned:
         if exit_code:
             sys.exit(exit_code)
 
+    def decode_filename(self, filename):
+        '''See if the filename contains encoded-word work around bugs in FileMakerPro'''
+        m = re.match(r'=\?(.*)\?(.*)\?(.*)\?=', s)
+        if m:
+            result = []
+            for content, encoding in email.header.decode_header(filename):
+                result.append(unicode(content, encoding or 'ascii'))
+            return ''.join(result)
+        else:
+            return filename
+
     def handle_mail(self, mail, mail_sender, mail_recipients, **options):
         content_errors = []
         attachments = []
@@ -90,7 +102,7 @@ In case of failure the following return value is returned:
         except models.FileType.DoesNotExist:
             content_errors.append('The subject "%s" does not match any known file type' % subject)
         for part in mail.walk():
-            filename = part.get_filename(None)
+            filename = self.decode_filename(part.get_filename(None))
             if part.get_content_type() == 'text/plain' and \
                 ('Content-Disposition' not in part or 'inline' in part['Content-Disposition']):
                 charset = part.get_content_charset('us-ascii')