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134 lines
2.6 KiB
Python
Executable File
134 lines
2.6 KiB
Python
Executable File
#
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# A class to hand a unix-style or mmdf-style mailboxes
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#
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# Jack Jansen, CWI, March 1994.
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#
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import rfc822
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class _Mailbox:
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def __init__(self, fp):
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self.fp = fp
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self.seekp = 0
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def seek(self, pos):
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self.seekp = pos
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def next(self):
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while 1:
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self.fp.seek(self.seekp)
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try:
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self._search_start()
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except EOFError:
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self.seekp = self.fp.tell()
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return None
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start = self.fp.tell()
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self._search_end()
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self.seekp = stop = self.fp.tell()
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if start <> stop:
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break
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return rfc822.Message(_Subfile(self.fp, start, stop))
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class _Subfile:
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def __init__(self, fp, start, stop):
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self.fp = fp
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self.start = start
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self.stop = stop
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self.pos = self.start
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def read(self, length = None):
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if self.pos >= self.stop:
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return ''
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if length is None:
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length = self.stop - self.pos
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self.fp.seek(self.pos)
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self.pos = self.pos + length
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return self.fp.read(length)
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def readline(self, length = None):
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if self.pos >= self.stop:
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return ''
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if length is None:
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length = self.stop - self.pos
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self.fp.seek(self.pos)
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data = self.fp.readline(length)
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if len(data) < length:
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length = len(data)
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self.pos = self.pos + length
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return data
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def tell(self):
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return self.pos - self.start
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def seek(self, pos):
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self.pos = pos + self.start
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def close(self):
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pass
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class UnixMailbox(_Mailbox):
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def _search_start(self):
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while 1:
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line = self.fp.readline()
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if not line:
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raise EOFError
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if line[:5] == 'From ':
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return
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def _search_end(self):
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while 1:
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pos = self.fp.tell()
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line = self.fp.readline()
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if not line:
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return
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if line[:5] == 'From ':
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self.fp.seek(pos)
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return
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class MmdfMailbox(_Mailbox):
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def _search_start(self):
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while 1:
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line = self.fp.readline()
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if not line:
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raise EOFError
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if line[:5] == '\001\001\001\001\n':
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return
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def _search_end(self):
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while 1:
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pos = self.fp.tell()
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line = self.fp.readline()
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if not line:
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return
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if line == '\001\001\001\001\n':
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self.fp.seek(pos)
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return
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if __name__ == '__main__':
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import posix
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import time
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import sys
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import string
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mbox = '/usr/mail/'+posix.environ['USER']
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fp = open(mbox, 'r')
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mb = UnixMailbox(fp)
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msgs = []
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while 1:
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msg = mb.next()
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if not msg:
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break
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msgs.append(msg)
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if len(sys.argv) > 1:
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num = string.atoi(sys.argv[1])
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print 'Message %d body:'%num
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msg = msgs[num-1]
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msg.rewindbody()
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sys.stdout.write(msg.fp.read())
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sys.exit(0)
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print 'Mailbox',mbox,'has',len(msgs),'messages:'
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for msg in msgs:
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f = msg.getheader('from')
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s = msg.getheader('subject')
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d = (msg.getheader('date'))
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print '%20.20s %18.18s %-30.30s'%(f, d[5:], s)
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