-
-
Notifications
You must be signed in to change notification settings - Fork 16.2k
/
sync-librelist.py
298 lines (243 loc) · 9.16 KB
/
sync-librelist.py
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
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
#!/usr/bin/env python
# -*- coding: utf-8 -*-
"""
sync librelist
~~~~~~~~~~~~~~
Pulls in the latest version of the mails from the Flask librelist
mailinglist and sorts them by thread into the processed folder as
json dumps with the most relevant information.
This will also trigger the rsync.
:copyright: Copyright 2010 by Armin Ronacher.
:license: BSD, see LICENSE for more details.
"""
from __future__ import with_statement
import os
import re
import unicodedata
from glob import glob
from subprocess import Popen
from flask import json
from werkzeug import Headers, parse_date
from websiteconfig import INCOMING_MAIL_FOLDER, THREAD_FOLDER, \
LIST_NAME, RSYNC_PATH, SUBJECT_PREFIX
_punctuation_re = re.compile(r'[\t !"#$%&\'()*\-/<=>?@\[\\\]^_`{|},.:]+')
_mail_split_re = re.compile(r'"?(.*?)"?(?:\s+<([^>]+)>)?$')
_string_inc_re = re.compile(r'(\d+)$')
_msgid_re = re.compile(r'<([^>]+)>')
def unquote_msgid(msgid):
msgid = (msgid or '').strip().strip('<>')
if msgid:
if '@' in msgid:
a, b = msgid.split('@', 1)
return a.strip('"') + '@' + b
return msgid.decode('iso-8859-15', 'replace')
def split_email(s):
p1, p2 = _mail_split_re.match(s.strip()).groups()
if p2:
words = p1.split()
for idx, word in enumerate(words):
if word.isupper():
words[idx] = word.capitalize()
return u' '.join(words), p2
elif '@' in p1:
return None, p1
return p1, None
def increment_string(string):
match = _string_inc_re.search(string)
if match is None:
return string + u'2'
return string[:match.start()] + unicode(int(match.group(1)) + 1)
def strip_subject_prefix(string):
"""Unstrips a title"""
if string.startswith(SUBJECT_PREFIX):
return string[len(SUBJECT_PREFIX):].lstrip()
if string[:3].lower() in (u'aw:', u're:'):
return u'Re: ' + strip_subject_prefix(string[3:].lstrip())
if string[:3].lower() in (u'fw:', u'wg:'):
return u'Fw: ' + strip_subject_prefix(string[3:].lstrip())
return string
def rsync():
"""Invokes rsync"""
Popen(['rsync', '-qazv', RSYNC_PATH % LIST_NAME,
INCOMING_MAIL_FOLDER]).wait()
class Tree(object):
def __init__(self, threads):
self.threads = threads
self.processed_mail = set()
self._new_mail = []
self._known_ids = {}
def _walk_mails(mails):
for mail in mails:
self.processed_mail.add(mail['fsid'])
self._known_ids[mail['msgid']] = mail
_walk_mails(mail['children'])
_walk_mails(x['root'] for x in threads)
def slug_used(self, slug):
for thread in self.threads:
if thread['slug'] == slug:
return True
return False
def generate_slug(self, mail):
date = parse_date(mail['date'])
if date is None:
date = 'missing-date'
else:
date = date.strftime('%Y-%m-%d')
rv = u'%s/%s' % (date,
'-'.join(x for x in _punctuation_re.split(
unicodedata.normalize('NFKC', unicode(mail['subject']))
.encode('ascii', 'ignore')) if x).lower()
or 'untitled')
while self.slug_used(rv):
rv = increment_string(rv)
return rv
def walk(self):
return self._known_ids.itervalues()
def add_new_mail(self, f, fsid):
mail = parse_mail(f, fsid)
self._new_mail.append(mail)
self._known_ids[mail['msgid']] = mail
def add_thread_for(self, mail):
self.threads.append({
'title': mail['subject'],
'slug': self.generate_slug(mail),
'date': mail['date'],
'author': mail['author'],
'root': mail,
'reply_count': 0
})
def has_mail(self, msgid):
return msgid in self._known_ids
def get_mail(self, msgid):
return self._known_ids.get(msgid)
def find_parent(self, mail):
# first check the reply to, some clients actually set that to
# something useful :)
if mail['in-reply-to']:
referenced_mail = self.get_mail(mail['in-reply-to'])
if referenced_mail is not None and referenced_mail is not mail:
return referenced_mail
# next check the references, pick the most recent one.
last = last_date = None
for msgid in mail['references']:
referenced_mail = self.get_mail(msgid)
if referenced_mail is None:
continue
other_date = parse_date(referenced_mail['date'])
if last is None or last_date < other_date:
last_date = other_date
last = referenced_mail
if last is not None and last is not mail:
return last
# oh boy, nothing matched, find the oldest matching subject
# then. That could take a while, we really check all mails...
def _strip_subject(subject):
if subject[:3].lower() in (u'aw:', u're:'):
subject = subject[3:]
return subject.strip().lower()
subject = _strip_subject(mail['subject'])
last = mail
last_date = parse_date(mail['date'])
for other_mail in self.walk():
if _strip_subject(other_mail['subject']) == subject:
other_date = parse_date(other_mail['date'])
if last is None or other_date < last_date:
last = other_mail
last_date = other_date
if last is not mail:
return last
def integrate_new_mail(self):
while self._new_mail:
mail = self._new_mail.pop()
print "A", mail['msgid']
parent = self.find_parent(mail)
if parent is not None:
parent['children'].append(mail)
else:
self.add_thread_for(mail)
self.processed_mail.add(mail['fsid'])
def _count_mails(children):
rv = len(children)
for child in children:
rv += _count_mails(child['children'])
return rv
for thread in self.threads:
thread['reply_count'] = _count_mails(thread['root']['children'])
def save(self):
for thread in self.threads:
filename = os.path.join(THREAD_FOLDER, thread['slug'])
try:
os.makedirs(os.path.dirname(filename))
except OSError:
pass
with open(filename, 'w') as f:
json.dump(thread, f, indent=2)
with open(os.path.join(THREAD_FOLDER, 'threadlist'), 'w') as f:
threads = sorted(self.threads, reverse=True,
key=lambda x: parse_date(x['date']))
for idx, thread in enumerate(threads):
thread = dict(thread)
del thread['root']
threads[idx] = thread
json.dump(threads, f, indent=2)
def get_processed_tree():
"""Returns the tree of already processed mails (from
the THREAD_FOLDER).
"""
threads = []
for thread in glob(THREAD_FOLDER + '/*/*/*/*'):
if os.path.isfile(thread):
with open(thread) as f:
threads.append(json.load(f))
return Tree(threads)
def parse_mail(f, fsid):
"""Parses an email and returns the information we care about"""
msg = json.load(f)
headers = Headers(msg['headers'])
irt = None
match = _msgid_re.search(headers.get('in-reply-to', ''))
if match is not None:
irt = unquote_msgid(match.group(1))
references = [unquote_msgid(msgid) for msgid
in headers.get('references', '').split() if msgid]
body = msg['body']
if body is None:
for part in msg['parts']:
if part['encoding']['type'] == 'text/plain':
body = part['body']
break
else:
body = 'could not decode message'
return {
'fsid': fsid,
'msgid': unquote_msgid(headers.get('message-id') or 'fakdeid-' + fsid),
'in-reply-to': irt,
'references': references,
'author': split_email(headers['from']),
'date': headers['Date'],
'subject': strip_subject_prefix(headers['subject'] or 'No Subject'),
'text': body,
'children': []
}
def process_mails(tree):
to_process = []
# find the unprocessed mails
for folder in glob('%s/%s/*/*/*/json' % (INCOMING_MAIL_FOLDER, LIST_NAME)):
for fsid in os.listdir(folder):
if fsid not in tree.processed_mail:
filename = os.path.join(folder, fsid)
if os.path.isfile(filename):
to_process.append((filename, fsid))
# now parse all mails and append them to the tree as new mails
for filename, fsid in to_process:
with open(filename) as f:
tree.add_new_mail(f, fsid)
tree.integrate_new_mail()
# and write the information to the file system
tree.save()
def main():
tree = get_processed_tree()
rsync()
process_mails(tree)
if __name__ == '__main__':
main()