1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
|
# Copyright 2016 Lars Wirzenius
#
# 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/>.
#
# =*= License: GPL-3+ =*=
import email
class MessageRenderer(object):
def summary(self, msg):
sender = self._get_header(msg, 'From')
date = self._get_header(msg, 'Date')
body = self._plain_text_body(msg)
indented_body = self._indent(body.strip())
return u'From: {}\nDate: {}\n\n{}'.format(
sender, date, indented_body)
def _indent(self, text):
fmt = u' {}\n'
return u''.join(fmt.format(line) for line in text.splitlines())
def _get_header(self, msg, name):
decoded = email.header.decode_header(msg[name])
combined = u' '.join(
self._decode_safely(value, encoding)
for value, encoding in decoded)
return combined
def _decode_safely(self, s, encoding):
try:
return s.decode(encoding or 'us-ascii')
except LookupError:
return repr(s)
except UnicodeDecodeError:
return repr(s)
def _plain_text_body(self, msg):
body = self._find_first_plain_text_part(msg)
if body is None:
return u''
text = self._get_payload_as_unicode(body)
return self._strip_signature(text)
def _find_first_plain_text_part(self, msg):
for part in msg.walk():
if part.get_content_type() == 'text/plain':
return part
return None
def _get_payload_as_unicode(self, body):
charset = body.get_param('charset', 'us-ascii')
text = body.get_payload(decode=True)
return self._decode_safely(text, charset)
def _strip_signature(self, text):
sigsep = u'\n-- \n'
parts = text.split(sigsep)
return parts[0]
|
