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comparison CSP2/CSP2_env/env-d9b9114564458d9d-741b3de822f2aaca6c6caa4325c4afce/lib/python3.8/email/encoders.py @ 68:5028fdace37b

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planemo upload commit 2e9511a184a1ca667c7be0c6321a36dc4e3d116d
author jpayne
date Tue, 18 Mar 2025 16:23:26 -0400
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67:0e9998148a16 68:5028fdace37b
1 # Copyright (C) 2001-2006 Python Software Foundation
2 # Author: Barry Warsaw
3 # Contact: email-sig@python.org
4
5 """Encodings and related functions."""
6
7 __all__ = [
8 'encode_7or8bit',
9 'encode_base64',
10 'encode_noop',
11 'encode_quopri',
12 ]
13
14
15 from base64 import encodebytes as _bencode
16 from quopri import encodestring as _encodestring
17
18
19
20 def _qencode(s):
21 enc = _encodestring(s, quotetabs=True)
22 # Must encode spaces, which quopri.encodestring() doesn't do
23 return enc.replace(b' ', b'=20')
24
25
26 def encode_base64(msg):
27 """Encode the message's payload in Base64.
28
29 Also, add an appropriate Content-Transfer-Encoding header.
30 """
31 orig = msg.get_payload(decode=True)
32 encdata = str(_bencode(orig), 'ascii')
33 msg.set_payload(encdata)
34 msg['Content-Transfer-Encoding'] = 'base64'
35
36
37
38 def encode_quopri(msg):
39 """Encode the message's payload in quoted-printable.
40
41 Also, add an appropriate Content-Transfer-Encoding header.
42 """
43 orig = msg.get_payload(decode=True)
44 encdata = _qencode(orig)
45 msg.set_payload(encdata)
46 msg['Content-Transfer-Encoding'] = 'quoted-printable'
47
48
49
50 def encode_7or8bit(msg):
51 """Set the Content-Transfer-Encoding header to 7bit or 8bit."""
52 orig = msg.get_payload(decode=True)
53 if orig is None:
54 # There's no payload. For backwards compatibility we use 7bit
55 msg['Content-Transfer-Encoding'] = '7bit'
56 return
57 # We play a trick to make this go fast. If decoding from ASCII succeeds,
58 # we know the data must be 7bit, otherwise treat it as 8bit.
59 try:
60 orig.decode('ascii')
61 except UnicodeError:
62 msg['Content-Transfer-Encoding'] = '8bit'
63 else:
64 msg['Content-Transfer-Encoding'] = '7bit'
65
66
67
68 def encode_noop(msg):
69 """Do nothing."""