annotate mercurial/mail.py @ 12957:9f2ac318b92e

util: clarify purpose of MBTextWrapper class It's easy to get confused and scared of an Unicode monster when skimming through this code: document that this is really just about column-counting.
author Nicolas Dumazet <nicdumz.commits@gmail.com>
date Tue, 09 Nov 2010 13:43:35 +0900
parents 339bd18c772f
children f05250572467
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
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1 # mail.py - mail sending bits for mercurial
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2 #
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3 # Copyright 2006 Matt Mackall <mpm@selenic.com>
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4 #
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5 # This software may be used and distributed according to the terms of the
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6 # GNU General Public License version 2 or any later version.
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7
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8 from i18n import _
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9 import util, encoding
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10 import os, smtplib, socket, quopri
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11 import email.Header, email.MIMEText, email.Utils
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12
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13 _oldheaderinit = email.Header.Header.__init__
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14 def _unifiedheaderinit(self, *args, **kw):
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15 """
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16 Python2.7 introduces a backwards incompatible change
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17 (Python issue1974, r70772) in email.Generator.Generator code:
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18 pre-2.7 code passed "continuation_ws='\t'" to the Header
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19 constructor, and 2.7 removed this parameter.
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20
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21 Default argument is continuation_ws=' ', which means that the
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22 behaviour is different in <2.7 and 2.7
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23
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24 We consider the 2.7 behaviour to be preferable, but need
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25 to have an unified behaviour for versions 2.4 to 2.7
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26 """
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27 # override continuation_ws
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28 kw['continuation_ws'] = ' '
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29 _oldheaderinit(self, *args, **kw)
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30
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31 email.Header.Header.__dict__['__init__'] = _unifiedheaderinit
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32
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33 def _smtp(ui):
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34 '''build an smtp connection and return a function to send mail'''
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35 local_hostname = ui.config('smtp', 'local_hostname')
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36 s = smtplib.SMTP(local_hostname=local_hostname)
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37 mailhost = ui.config('smtp', 'host')
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38 if not mailhost:
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39 raise util.Abort(_('smtp.host not configured - cannot send mail'))
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40 mailport = util.getport(ui.config('smtp', 'port', 25))
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41 ui.note(_('sending mail: smtp host %s, port %s\n') %
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42 (mailhost, mailport))
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43 s.connect(host=mailhost, port=mailport)
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44 if ui.configbool('smtp', 'tls'):
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45 if not hasattr(socket, 'ssl'):
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46 raise util.Abort(_("can't use TLS: Python SSL support "
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47 "not installed"))
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48 ui.note(_('(using tls)\n'))
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49 s.ehlo()
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50 s.starttls()
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51 s.ehlo()
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52 username = ui.config('smtp', 'username')
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53 password = ui.config('smtp', 'password')
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54 if username and not password:
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55 password = ui.getpass()
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56 if username and password:
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57 ui.note(_('(authenticating to mail server as %s)\n') %
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58 (username))
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59 try:
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60 s.login(username, password)
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61 except smtplib.SMTPException, inst:
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62 raise util.Abort(inst)
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63
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64 def send(sender, recipients, msg):
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65 try:
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66 return s.sendmail(sender, recipients, msg)
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67 except smtplib.SMTPRecipientsRefused, inst:
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68 recipients = [r[1] for r in inst.recipients.values()]
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69 raise util.Abort('\n' + '\n'.join(recipients))
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70 except smtplib.SMTPException, inst:
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71 raise util.Abort(inst)
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72
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73 return send
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74
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75 def _sendmail(ui, sender, recipients, msg):
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76 '''send mail using sendmail.'''
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77 program = ui.config('email', 'method')
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78 cmdline = '%s -f %s %s' % (program, util.email(sender),
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79 ' '.join(map(util.email, recipients)))
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80 ui.note(_('sending mail: %s\n') % cmdline)
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81 fp = util.popen(cmdline, 'w')
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82 fp.write(msg)
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83 ret = fp.close()
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84 if ret:
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85 raise util.Abort('%s %s' % (
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86 os.path.basename(program.split(None, 1)[0]),
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87 util.explain_exit(ret)[0]))
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88
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89 def connect(ui):
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90 '''make a mail connection. return a function to send mail.
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91 call as sendmail(sender, list-of-recipients, msg).'''
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92 if ui.config('email', 'method', 'smtp') == 'smtp':
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93 return _smtp(ui)
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94 return lambda s, r, m: _sendmail(ui, s, r, m)
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95
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96 def sendmail(ui, sender, recipients, msg):
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97 send = connect(ui)
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98 return send(sender, recipients, msg)
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99
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100 def validateconfig(ui):
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101 '''determine if we have enough config data to try sending email.'''
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102 method = ui.config('email', 'method', 'smtp')
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103 if method == 'smtp':
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104 if not ui.config('smtp', 'host'):
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105 raise util.Abort(_('smtp specified as email transport, '
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106 'but no smtp host configured'))
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107 else:
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108 if not util.find_exe(method):
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109 raise util.Abort(_('%r specified as email transport, '
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110 'but not in PATH') % method)
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111
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112 def mimetextpatch(s, subtype='plain', display=False):
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113 '''If patch in utf-8 transfer-encode it.'''
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114
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115 enc = None
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116 for line in s.splitlines():
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117 if len(line) > 950:
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118 s = quopri.encodestring(s)
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119 enc = "quoted-printable"
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120 break
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121
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122 cs = 'us-ascii'
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123 if not display:
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124 try:
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125 s.decode('us-ascii')
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126 except UnicodeDecodeError:
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127 try:
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128 s.decode('utf-8')
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Rocco Rutte <pdmef@gmx.net>
parents: 8312
diff changeset
129 cs = 'utf-8'
7191
d14212218582 mail: mime-encode patches that are utf-8
Christian Ebert <blacktrash@gmx.net>
parents: 7114
diff changeset
130 except UnicodeDecodeError:
8332
3e544c074459 patchbomb: quoted-printable encode overly long lines
Rocco Rutte <pdmef@gmx.net>
parents: 8312
diff changeset
131 # We'll go with us-ascii as a fallback.
7191
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Christian Ebert <blacktrash@gmx.net>
parents: 7114
diff changeset
132 pass
8332
3e544c074459 patchbomb: quoted-printable encode overly long lines
Rocco Rutte <pdmef@gmx.net>
parents: 8312
diff changeset
133
3e544c074459 patchbomb: quoted-printable encode overly long lines
Rocco Rutte <pdmef@gmx.net>
parents: 8312
diff changeset
134 msg = email.MIMEText.MIMEText(s, subtype, cs)
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Rocco Rutte <pdmef@gmx.net>
parents: 8312
diff changeset
135 if enc:
3e544c074459 patchbomb: quoted-printable encode overly long lines
Rocco Rutte <pdmef@gmx.net>
parents: 8312
diff changeset
136 del msg['Content-Transfer-Encoding']
3e544c074459 patchbomb: quoted-printable encode overly long lines
Rocco Rutte <pdmef@gmx.net>
parents: 8312
diff changeset
137 msg['Content-Transfer-Encoding'] = enc
3e544c074459 patchbomb: quoted-printable encode overly long lines
Rocco Rutte <pdmef@gmx.net>
parents: 8312
diff changeset
138 return msg
7191
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Christian Ebert <blacktrash@gmx.net>
parents: 7114
diff changeset
139
7114
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Christian Ebert <blacktrash@gmx.net>
parents: 6548
diff changeset
140 def _charsets(ui):
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parents: 6548
diff changeset
141 '''Obtains charsets to send mail parts not containing patches.'''
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Christian Ebert <blacktrash@gmx.net>
parents: 6548
diff changeset
142 charsets = [cs.lower() for cs in ui.configlist('email', 'charsets')]
7948
de377b1a9a84 move encoding bits from util to encoding
Matt Mackall <mpm@selenic.com>
parents: 7195
diff changeset
143 fallbacks = [encoding.fallbackencoding.lower(),
de377b1a9a84 move encoding bits from util to encoding
Matt Mackall <mpm@selenic.com>
parents: 7195
diff changeset
144 encoding.encoding.lower(), 'utf-8']
8343
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Martin Geisler <mg@lazybytes.net>
parents: 8332
diff changeset
145 for cs in fallbacks: # find unique charsets while keeping order
7114
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Christian Ebert <blacktrash@gmx.net>
parents: 6548
diff changeset
146 if cs not in charsets:
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Christian Ebert <blacktrash@gmx.net>
parents: 6548
diff changeset
147 charsets.append(cs)
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parents: 6548
diff changeset
148 return [cs for cs in charsets if not cs.endswith('ascii')]
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parents: 6548
diff changeset
149
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parents: 6548
diff changeset
150 def _encode(ui, s, charsets):
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parents: 6548
diff changeset
151 '''Returns (converted) string, charset tuple.
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parents: 6548
diff changeset
152 Finds out best charset by cycling through sendcharsets in descending
7948
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Matt Mackall <mpm@selenic.com>
parents: 7195
diff changeset
153 order. Tries both encoding and fallbackencoding for input. Only as
7114
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Christian Ebert <blacktrash@gmx.net>
parents: 6548
diff changeset
154 last resort send as is in fake ascii.
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Christian Ebert <blacktrash@gmx.net>
parents: 6548
diff changeset
155 Caveat: Do not use for mail parts containing patches!'''
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Christian Ebert <blacktrash@gmx.net>
parents: 6548
diff changeset
156 try:
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Christian Ebert <blacktrash@gmx.net>
parents: 6548
diff changeset
157 s.decode('ascii')
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Christian Ebert <blacktrash@gmx.net>
parents: 6548
diff changeset
158 except UnicodeDecodeError:
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Christian Ebert <blacktrash@gmx.net>
parents: 6548
diff changeset
159 sendcharsets = charsets or _charsets(ui)
7948
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Matt Mackall <mpm@selenic.com>
parents: 7195
diff changeset
160 for ics in (encoding.encoding, encoding.fallbackencoding):
7114
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parents: 6548
diff changeset
161 try:
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Christian Ebert <blacktrash@gmx.net>
parents: 6548
diff changeset
162 u = s.decode(ics)
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Christian Ebert <blacktrash@gmx.net>
parents: 6548
diff changeset
163 except UnicodeDecodeError:
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Christian Ebert <blacktrash@gmx.net>
parents: 6548
diff changeset
164 continue
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Christian Ebert <blacktrash@gmx.net>
parents: 6548
diff changeset
165 for ocs in sendcharsets:
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Christian Ebert <blacktrash@gmx.net>
parents: 6548
diff changeset
166 try:
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Christian Ebert <blacktrash@gmx.net>
parents: 6548
diff changeset
167 return u.encode(ocs), ocs
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Christian Ebert <blacktrash@gmx.net>
parents: 6548
diff changeset
168 except UnicodeEncodeError:
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Christian Ebert <blacktrash@gmx.net>
parents: 6548
diff changeset
169 pass
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Christian Ebert <blacktrash@gmx.net>
parents: 6548
diff changeset
170 except LookupError:
7195
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Christian Ebert <blacktrash@gmx.net>
parents: 7191
diff changeset
171 ui.warn(_('ignoring invalid sendcharset: %s\n') % ocs)
7114
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parents: 6548
diff changeset
172 # if ascii, or all conversion attempts fail, send (broken) ascii
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parents: 6548
diff changeset
173 return s, 'us-ascii'
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Christian Ebert <blacktrash@gmx.net>
parents: 6548
diff changeset
174
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parents: 6548
diff changeset
175 def headencode(ui, s, charsets=None, display=False):
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Christian Ebert <blacktrash@gmx.net>
parents: 6548
diff changeset
176 '''Returns RFC-2047 compliant header from given string.'''
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Christian Ebert <blacktrash@gmx.net>
parents: 6548
diff changeset
177 if not display:
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Christian Ebert <blacktrash@gmx.net>
parents: 6548
diff changeset
178 # split into words?
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Christian Ebert <blacktrash@gmx.net>
parents: 6548
diff changeset
179 s, cs = _encode(ui, s, charsets)
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Christian Ebert <blacktrash@gmx.net>
parents: 6548
diff changeset
180 return str(email.Header.Header(s, cs))
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Christian Ebert <blacktrash@gmx.net>
parents: 6548
diff changeset
181 return s
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Christian Ebert <blacktrash@gmx.net>
parents: 6548
diff changeset
182
9948
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Marti Raudsepp <marti@juffo.org>
parents: 9715
diff changeset
183 def _addressencode(ui, name, addr, charsets=None):
7114
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parents: 6548
diff changeset
184 name = headencode(ui, name, charsets)
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Christian Ebert <blacktrash@gmx.net>
parents: 6548
diff changeset
185 try:
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Christian Ebert <blacktrash@gmx.net>
parents: 6548
diff changeset
186 acc, dom = addr.split('@')
30e49d54c537 mail: add methods to handle non-ascii chars
Christian Ebert <blacktrash@gmx.net>
parents: 6548
diff changeset
187 acc = acc.encode('ascii')
9715
f0e99a2eac76 patchbomb: fix handling of email addresses with Unicode domains (IDNA)
Marti Raudsepp <marti@juffo.org>
parents: 9246
diff changeset
188 dom = dom.decode(encoding.encoding).encode('idna')
7114
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Christian Ebert <blacktrash@gmx.net>
parents: 6548
diff changeset
189 addr = '%s@%s' % (acc, dom)
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Christian Ebert <blacktrash@gmx.net>
parents: 6548
diff changeset
190 except UnicodeDecodeError:
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Christian Ebert <blacktrash@gmx.net>
parents: 6548
diff changeset
191 raise util.Abort(_('invalid email address: %s') % addr)
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Christian Ebert <blacktrash@gmx.net>
parents: 6548
diff changeset
192 except ValueError:
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Christian Ebert <blacktrash@gmx.net>
parents: 6548
diff changeset
193 try:
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Christian Ebert <blacktrash@gmx.net>
parents: 6548
diff changeset
194 # too strict?
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Christian Ebert <blacktrash@gmx.net>
parents: 6548
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195 addr = addr.encode('ascii')
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Christian Ebert <blacktrash@gmx.net>
parents: 6548
diff changeset
196 except UnicodeDecodeError:
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Christian Ebert <blacktrash@gmx.net>
parents: 6548
diff changeset
197 raise util.Abort(_('invalid local address: %s') % addr)
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Christian Ebert <blacktrash@gmx.net>
parents: 6548
diff changeset
198 return email.Utils.formataddr((name, addr))
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Christian Ebert <blacktrash@gmx.net>
parents: 6548
diff changeset
199
9948
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Marti Raudsepp <marti@juffo.org>
parents: 9715
diff changeset
200 def addressencode(ui, address, charsets=None, display=False):
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Marti Raudsepp <marti@juffo.org>
parents: 9715
diff changeset
201 '''Turns address into RFC-2047 compliant header.'''
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Marti Raudsepp <marti@juffo.org>
parents: 9715
diff changeset
202 if display or not address:
e5b44a7986d0 mail: add parseaddrlist() function for parsing many addresses at once
Marti Raudsepp <marti@juffo.org>
parents: 9715
diff changeset
203 return address or ''
e5b44a7986d0 mail: add parseaddrlist() function for parsing many addresses at once
Marti Raudsepp <marti@juffo.org>
parents: 9715
diff changeset
204 name, addr = email.Utils.parseaddr(address)
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Marti Raudsepp <marti@juffo.org>
parents: 9715
diff changeset
205 return _addressencode(ui, name, addr, charsets)
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Marti Raudsepp <marti@juffo.org>
parents: 9715
diff changeset
206
e5b44a7986d0 mail: add parseaddrlist() function for parsing many addresses at once
Marti Raudsepp <marti@juffo.org>
parents: 9715
diff changeset
207 def addrlistencode(ui, addrs, charsets=None, display=False):
e5b44a7986d0 mail: add parseaddrlist() function for parsing many addresses at once
Marti Raudsepp <marti@juffo.org>
parents: 9715
diff changeset
208 '''Turns a list of addresses into a list of RFC-2047 compliant headers.
e5b44a7986d0 mail: add parseaddrlist() function for parsing many addresses at once
Marti Raudsepp <marti@juffo.org>
parents: 9715
diff changeset
209 A single element of input list may contain multiple addresses, but output
e5b44a7986d0 mail: add parseaddrlist() function for parsing many addresses at once
Marti Raudsepp <marti@juffo.org>
parents: 9715
diff changeset
210 always has one address per item'''
e5b44a7986d0 mail: add parseaddrlist() function for parsing many addresses at once
Marti Raudsepp <marti@juffo.org>
parents: 9715
diff changeset
211 if display:
e5b44a7986d0 mail: add parseaddrlist() function for parsing many addresses at once
Marti Raudsepp <marti@juffo.org>
parents: 9715
diff changeset
212 return [a.strip() for a in addrs if a.strip()]
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Marti Raudsepp <marti@juffo.org>
parents: 9715
diff changeset
213
e5b44a7986d0 mail: add parseaddrlist() function for parsing many addresses at once
Marti Raudsepp <marti@juffo.org>
parents: 9715
diff changeset
214 result = []
e5b44a7986d0 mail: add parseaddrlist() function for parsing many addresses at once
Marti Raudsepp <marti@juffo.org>
parents: 9715
diff changeset
215 for name, addr in email.Utils.getaddresses(addrs):
e5b44a7986d0 mail: add parseaddrlist() function for parsing many addresses at once
Marti Raudsepp <marti@juffo.org>
parents: 9715
diff changeset
216 if name or addr:
e5b44a7986d0 mail: add parseaddrlist() function for parsing many addresses at once
Marti Raudsepp <marti@juffo.org>
parents: 9715
diff changeset
217 result.append(_addressencode(ui, name, addr, charsets))
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Marti Raudsepp <marti@juffo.org>
parents: 9715
diff changeset
218 return result
e5b44a7986d0 mail: add parseaddrlist() function for parsing many addresses at once
Marti Raudsepp <marti@juffo.org>
parents: 9715
diff changeset
219
7114
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Christian Ebert <blacktrash@gmx.net>
parents: 6548
diff changeset
220 def mimeencode(ui, s, charsets=None, display=False):
30e49d54c537 mail: add methods to handle non-ascii chars
Christian Ebert <blacktrash@gmx.net>
parents: 6548
diff changeset
221 '''creates mime text object, encodes it if needed, and sets
30e49d54c537 mail: add methods to handle non-ascii chars
Christian Ebert <blacktrash@gmx.net>
parents: 6548
diff changeset
222 charset and transfer-encoding accordingly.'''
30e49d54c537 mail: add methods to handle non-ascii chars
Christian Ebert <blacktrash@gmx.net>
parents: 6548
diff changeset
223 cs = 'us-ascii'
30e49d54c537 mail: add methods to handle non-ascii chars
Christian Ebert <blacktrash@gmx.net>
parents: 6548
diff changeset
224 if not display:
30e49d54c537 mail: add methods to handle non-ascii chars
Christian Ebert <blacktrash@gmx.net>
parents: 6548
diff changeset
225 s, cs = _encode(ui, s, charsets)
30e49d54c537 mail: add methods to handle non-ascii chars
Christian Ebert <blacktrash@gmx.net>
parents: 6548
diff changeset
226 return email.MIMEText.MIMEText(s, 'plain', cs)