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
|
#! @PYTHON@
# Copyright (C) 2001-2003 by the Free Software Foundation, Inc.
#
# 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 2
# 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, write to the Free Software
# Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
"""Clean up an .mbox archive file.
The archiver looks for Unix-From lines separating messages in an mbox archive
file. For compatibility, it specifically looks for lines that start with
"From " -- i.e. the letters capital-F, lowercase-r, o, m, space, ignoring
everything else on the line.
Normally, any lines that start "From " in the body of a message should be
escaped such that a > character is actually the first on a line. It is
possible though that body lines are not actually escaped. This script
attempts to fix these by doing a stricter test of the Unix-From lines. Any
lines that start "From " but do not pass this stricter test are escaped with a
> character.
Usage: cleanarch [options] < inputfile > outputfile
Options:
-s n
--status=n
Print a # character every n lines processed
-q / --quiet
Don't print changed line information to standard error.
-n / --dry-run
Don't actually output anything.
-h / --help
Print this message and exit
"""
import re
import sys
import getopt
import mailbox
import paths
from Mailman.i18n import _
cre = re.compile(mailbox.UnixMailbox._fromlinepattern)
# From RFC 2822, a header field name must contain only characters from 33-126
# inclusive, excluding colon. I.e. from oct 41 to oct 176 less oct 072. Must
# use re.match() so that it's anchored at the beginning of the line.
fre = re.compile(r'[\041-\071\073-\0176]+')
def usage(code, msg=''):
if code:
fd = sys.stderr
else:
fd = sys.stdout
print >> fd, _(__doc__)
if msg:
print >> fd, msg
sys.exit(code)
def escape_line(line, lineno, quiet, output):
if output:
sys.stdout.write('>' + line)
if not quiet:
print >> sys.stderr, _('Unix-From line changed: %(lineno)d')
print >> sys.stderr, line[:-1]
def main():
try:
opts, args = getopt.getopt(
sys.argv[1:], 'hqns:',
['help', 'quiet', 'dry-run', 'status='])
except getopt.error, msg:
usage(1, msg)
quiet = False
output = True
status = -1
for opt, arg in opts:
if opt in ('-h', '--help'):
usage(0)
elif opt in ('-q', '--quiet'):
quiet = True
elif opt in ('-n', '--dry-run'):
output = False
elif opt in ('-s', '--status'):
try:
status = int(arg)
except ValueError:
usage(1, _('Bad status number: %(arg)s'))
if args:
usage(1)
lineno = 0
statuscnt = 0
messages = 0
prevline = None
while True:
lineno += 1
line = sys.stdin.readline()
if not line:
break
if line.startswith('From '):
if cre.match(line):
# This is a real Unix-From line. But it could be a message
# /about/ Unix-From lines, so as a second order test, make
# sure there's at least one RFC 2822 header following
nextline = sys.stdin.readline()
lineno += 1
if not nextline:
# It was the last line of the mbox, so it couldn't have
# been a Unix-From
escape_line(line, lineno, quiet, output)
break
fieldname = nextline.split(':', 1)
if len(fieldname) < 2 or not fre.match(nextline):
# The following line was not a header, so this wasn't a
# valid Unix-From
escape_line(line, lineno, quiet, output)
if output:
sys.stdout.write(nextline)
else:
# It's a valid Unix-From line
messages += 1
if output:
# Before we spit out the From_ line, make sure the
# previous line was blank.
if prevline is not None and prevline <> '\n':
sys.stdout.write('\n')
sys.stdout.write(line)
sys.stdout.write(nextline)
else:
# This is a bogus Unix-From line
escape_line(line, lineno, quiet, output)
elif output:
# Any old line
sys.stdout.write(line)
if status > 0 and (lineno % status) == 0:
sys.stderr.write('#')
statuscnt += 1
if statuscnt > 50:
print >> sys.stderr
statuscnt = 0
prevline = line
print >> sys.stderr, _('%(messages)d messages found')
if __name__ == '__main__':
main()
|
