summaryrefslogtreecommitdiffstats
path: root/Lib/mailbox.py
blob: 6d5f6e499a103202a3633ea4eb52da4660a75757 (plain)
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
#! /usr/bin/env python

"""Classes to handle Unix style, MMDF style, and MH style mailboxes."""


import rfc822
import os

class _Mailbox:

        def __init__(self, fp):
                self.fp = fp
                self.seekp = 0

        def seek(self, pos, whence=0):
                if whence==1:           # Relative to current position
                        self.pos = self.pos + pos
                if whence==2:           # Relative to file's end
                        self.pos = self.stop + pos
                else:                   # Default - absolute position
                        self.pos = self.start + pos

        def next(self):
                while 1:
                        self.fp.seek(self.seekp)
                        try:
                                self._search_start()
                        except EOFError:
                                self.seekp = self.fp.tell()
                                return None
                        start = self.fp.tell()
                        self._search_end()
                        self.seekp = stop = self.fp.tell()
                        if start <> stop:
                                break
                return rfc822.Message(_Subfile(self.fp, start, stop))

class _Subfile:

        def __init__(self, fp, start, stop):
                self.fp = fp
                self.start = start
                self.stop = stop
                self.pos = self.start

        def read(self, length = None):
                if self.pos >= self.stop:
                        return ''
                remaining = self.stop - self.pos
                if length is None or length < 0:
                        length = remaining
                elif length > remaining:
                        length = remaining
                self.fp.seek(self.pos)
                data = self.fp.read(length)
                self.pos = self.fp.tell()
                return data

        def readline(self, length = None):
                if self.pos >= self.stop:
                        return ''
                if length is None:
                        length = self.stop - self.pos
                self.fp.seek(self.pos)
                data = self.fp.readline(length)
                self.pos = self.fp.tell()
                return data

        def readlines(self, sizehint = -1):
                lines = []
                while 1:
                        line = self.readline()
                        if not line:
                                break
                        lines.append(line)
                        if sizehint >= 0:
                                sizehint = sizehint - len(line)
                                if sizehint <= 0:
                                        break
                return lines

        def tell(self):
                return self.pos - self.start

        def seek(self, pos, whence=0):
                if whence == 0:
                        self.pos = self.start + pos
                elif whence == 1:
                        self.pos = self.pos + pos
                elif whence == 2:
                        self.pos = self.stop + pos

        def close(self):
                del self.fp

class UnixMailbox(_Mailbox):

        def _search_start(self):
                while 1:
                        line = self.fp.readline()
                        if not line:
                                raise EOFError
                        if line[:5] == 'From ' and self._isrealfromline(line):
                                return

        def _search_end(self):
                while 1:
                        pos = self.fp.tell()
                        line = self.fp.readline()
                        if not line:
                                return
                        if line[:5] == 'From ' and self._isrealfromline(line):
                                self.fp.seek(pos)
                                return

        # An overridable mechanism to test for From-line-ness.
        # You can either specify a different regular expression
        # or define a whole new _isrealfromline() method.
        # Note that this only gets called for lines starting with
        # the 5 characters "From ".

        _fromlinepattern = r"From \s*[^\s]+\s+\w\w\w\s+\w\w\w\s+\d?\d\s+" \
                           r"\d?\d:\d\d(:\d\d)?(\s+[^\s]+)?\s+\d\d\d\d\s*$"
        _regexp = None

        def _isrealfromline(self, line):
                if not self._regexp:
                        import re
                        self._regexp = re.compile(self._fromlinepattern)
                return self._regexp.match(line)

class MmdfMailbox(_Mailbox):

        def _search_start(self):
                while 1:
                        line = self.fp.readline()
                        if not line:
                                raise EOFError
                        if line[:5] == '\001\001\001\001\n':
                                return

        def _search_end(self):
                while 1:
                        pos = self.fp.tell()
                        line = self.fp.readline()
                        if not line:
                                return
                        if line == '\001\001\001\001\n':
                                self.fp.seek(pos)
                                return

class MHMailbox:

        def __init__(self, dirname):
                import re
                pat = re.compile('^[0-9][0-9]*$')
                self.dirname = dirname
                files = os.listdir(self.dirname)
                self.boxes = []
                for f in files:
                        if pat.match(f):
                                self.boxes.append(f)

        def next(self):
                if not self.boxes:
                        return None
                fn = self.boxes[0]
                del self.boxes[0]
                fp = open(os.path.join(self.dirname, fn))
                return rfc822.Message(fp)

class Maildir:

        # Qmail directory mailbox

        def __init__(self, dirname):
                import string
                self.dirname = dirname
                self.boxes = []

                # check for new mail
                newdir = os.path.join(self.dirname, 'new')
                for file in os.listdir(newdir):
                        if len(string.split(file, '.')) > 2:
                                self.boxes.append(os.path.join(newdir, file))

                # Now check for current mail in this maildir
                curdir = os.path.join(self.dirname, 'cur')
                for file in os.listdir(curdir):
                        if len(string.split(file, '.')) > 2:
                                self.boxes.append(os.path.join(curdir, file))

        def next(self):
                if not self.boxes:
                        return None
                fn = self.boxes[0]
                del self.boxes[0]
                fp = open(os.path.join(self.dirname, fn))
                return rfc822.Message(fp)

class BabylMailbox(_Mailbox):

        def _search_start(self):
                while 1:
                        line = self.fp.readline()
                        if not line:
                                raise EOFError
                        if line == '*** EOOH ***\n':
                                return

        def _search_end(self):
                while 1:
                        pos = self.fp.tell()
                        line = self.fp.readline()
                        if not line:
                                return
                        if line == '\037\014\n':
                                self.fp.seek(pos)
                                return


def _test():
        import time
        import sys
        import string
        import os

        args = sys.argv[1:]
        if not args:
                for key in 'MAILDIR', 'MAIL', 'LOGNAME', 'USER':
                        if os.environ.has_key(key):
                                mbox = os.environ[key]
                                break
                else:
                        print "$MAIL, $LOGNAME nor $USER set -- who are you?"
                        return
        else:
                mbox = args[0]
        if mbox[:1] == '+':
                mbox = os.environ['HOME'] + '/Mail/' + mbox[1:]
        elif not '/' in mbox:
                mbox = '/usr/mail/' + mbox
        if os.path.isdir(mbox):
                if os.path.isdir(os.path.join(mbox, 'cur')):
                        mb = Maildir(mbox)
                else:
                        mb = MHMailbox(mbox)
        else:
                fp = open(mbox, 'r')
                mb = UnixMailbox(fp)
        
        msgs = []
        while 1:
                msg = mb.next()
                if msg is None:
                        break
                msgs.append(msg)
                if len(args) <= 1:
                        msg.fp = None
        if len(args) > 1:
                num = string.atoi(args[1])
                print 'Message %d body:'%num
                msg = msgs[num-1]
                msg.rewindbody()
                sys.stdout.write(msg.fp.read())
        else:
                print 'Mailbox',mbox,'has',len(msgs),'messages:'
                for msg in msgs:
                        f = msg.getheader('from') or ""
                        s = msg.getheader('subject') or ""
                        d = msg.getheader('date') or ""
                        print '%20.20s   %18.18s   %-30.30s'%(f, d[5:], s)


if __name__ == '__main__':
        _test()