Add support for python 3

Re #26

.travis.yml

@@ -2,4 +2,9 @@ language: python
 python:
   - "2.6"
   - "2.7"
+  - "3.2"
+  - "3.3"
+  - "3.4"
+install:
+  - python setup.py -q install
 script: nosetests

imbox/parser.py

@@ -1,11 +1,14 @@
+from __future__ import unicode_literals
+from six import StringIO
+
 import re
-import StringIO
 import email
 import base64
 import quopri
 import time
 from datetime import datetime
 from email.header import decode_header
+from imbox.utils import str_encode, str_decode
 
 
 class Struct(object):
@@ -26,17 +29,17 @@ def decode_mail_header(value, default_charset='us-ascii'):
     try:
         headers = decode_header(value)
     except email.errors.HeaderParseError:
-        return value.encode(default_charset, 'replace').decode(default_charset)
+        return str_decode(str_encode(value, default_charset, 'replace'), default_charset)
     else:
         for index, (text, charset) in enumerate(headers):
             try:
-                headers[index] = text.decode(charset or default_charset,
+                headers[index] = str_decode(text, charset or default_charset,
                                             'replace')
             except LookupError:
                 # if the charset is unknown, force default
-                headers[index] = text.decode(default_charset, 'replace')
+                headers[index] = str_decode(text, default_charset, 'replace')
 
-        return u"".join(headers)
+        return ''.join(headers)
 
 
 def get_mail_addresses(message, header_name):
@@ -65,7 +68,7 @@ def decode_param(param):
                 value = quopri.decodestring(code)
             elif type_ == 'B':
                 value = base64.decodestring(code)
-                value = unicode(value, encoding)
+                value = str_encode(value, encoding)
                 value_results.append(value)
                 if value_results:
                     v = ''.join(value_results)
@@ -151,7 +154,7 @@ def parse_email(raw_email):
                              'content-type']
 
     parsed_email['headers'] = []
-    for key, value in email_dict.iteritems():
+    for key, value in email_dict.items():
 
         if key.lower() in value_headers_keys:
             valid_key_name = key.lower().replace('-', '_')

imbox/utils.py

@@ -0,0 +1,14 @@
+from six import PY3
+
+if PY3:
+    def str_encode(value='', encoding=None, errors='strict'):
+        return str(value, encoding, errors)
+
+    def str_decode(value='', encoding=None, errors='strict'):
+        return bytes(value, encoding, errors).decode('utf-8')
+else:
+    def str_encode(string=u'', encoding=None, errors='strict'):
+        return unicode(string, encoding, errors)
+
+    def str_decode(value='', encoding=None, errors='strict'):
+        return value.decode(encoding, errors)

setup.py

@@ -20,6 +20,5 @@ setup(
     packages=['imbox'],
     package_dir={'imbox':'imbox'},
     zip_safe=False,
-	install_requires=[],
-
+    install_requires=['six',],
 )

tests/parser_tests.py

@@ -1,5 +1,4 @@
 import unittest
-import email
 from imbox.parser import *
 
 raw_email = """Delivered-To: johndoe@gmail.com
@@ -35,10 +34,9 @@ Hi, this is a test email with no <span style="font-weight: bold;">attachments</s
 --------------080505090108000500080106--
 """
 
+
 class TestParser(unittest.TestCase):
 
-
-	
     def test_parse_email(self):
         parsed_email = parse_email(raw_email)
 
@@ -47,14 +45,12 @@ class TestParser(unittest.TestCase):
         self.assertEqual(u'Tue, 30 Jul 2013 15:56:29 +0300', parsed_email.date)
         self.assertEqual(u'<test0@example.com>', parsed_email.message_id)
 
-
     def test_parse_email_ignores_header_casing(self):
         self.assertEqual('one', parse_email('Message-ID: one').message_id)
         self.assertEqual('one', parse_email('Message-Id: one').message_id)
         self.assertEqual('one', parse_email('Message-id: one').message_id)
         self.assertEqual('one', parse_email('message-id: one').message_id)
 
-
     # TODO - Complete the test suite
     def test_parse_attachment(self):
         pass
@@ -62,8 +58,6 @@ class TestParser(unittest.TestCase):
     def test_decode_mail_header(self):
         pass
    
-	
-	
     def test_get_mail_addresses(self):
 
         to_message_object = email.message_from_string("To: John Doe <johndoe@gmail.com>")
@@ -71,4 +65,3 @@ class TestParser(unittest.TestCase):
 
         from_message_object = email.message_from_string("From: John Smith <johnsmith@gmail.com>")
         self.assertEqual([{'email': 'johnsmith@gmail.com', 'name': u'John Smith'}], get_mail_addresses(from_message_object, 'from'))
-