mirror of
https://github.com/python/cpython.git
synced 2024-12-13 03:45:42 +08:00
134 lines
2.6 KiB
Python
Executable File
134 lines
2.6 KiB
Python
Executable File
#
|
|
# A class to hand a unix-style or mmdf-style mailboxes
|
|
#
|
|
# Jack Jansen, CWI, March 1994.
|
|
#
|
|
import rfc822
|
|
|
|
class _Mailbox:
|
|
def __init__(self, fp):
|
|
self.fp = fp
|
|
self.seekp = 0
|
|
|
|
def seek(self, pos):
|
|
self.seekp = 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 ''
|
|
if length is None:
|
|
length = self.stop - self.pos
|
|
self.fp.seek(self.pos)
|
|
self.pos = self.pos + length
|
|
return self.fp.read(length)
|
|
|
|
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)
|
|
if len(data) < length:
|
|
length = len(data)
|
|
self.pos = self.pos + length
|
|
return data
|
|
|
|
def tell(self):
|
|
return self.pos - self.start
|
|
|
|
def seek(self, pos):
|
|
self.pos = pos + self.start
|
|
|
|
def close(self):
|
|
pass
|
|
|
|
class UnixMailbox(_Mailbox):
|
|
def _search_start(self):
|
|
while 1:
|
|
line = self.fp.readline()
|
|
if not line:
|
|
raise EOFError
|
|
if line[:5] == 'From ':
|
|
return
|
|
|
|
def _search_end(self):
|
|
while 1:
|
|
pos = self.fp.tell()
|
|
line = self.fp.readline()
|
|
if not line:
|
|
return
|
|
if line[:5] == 'From ':
|
|
self.fp.seek(pos)
|
|
return
|
|
|
|
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
|
|
|
|
if __name__ == '__main__':
|
|
import posix
|
|
import time
|
|
import sys
|
|
import string
|
|
mbox = '/usr/mail/'+posix.environ['USER']
|
|
fp = open(mbox, 'r')
|
|
mb = UnixMailbox(fp)
|
|
msgs = []
|
|
while 1:
|
|
msg = mb.next()
|
|
if not msg:
|
|
break
|
|
msgs.append(msg)
|
|
if len(sys.argv) > 1:
|
|
num = string.atoi(sys.argv[1])
|
|
print 'Message %d body:'%num
|
|
msg = msgs[num-1]
|
|
msg.rewindbody()
|
|
sys.stdout.write(msg.fp.read())
|
|
sys.exit(0)
|
|
print 'Mailbox',mbox,'has',len(msgs),'messages:'
|
|
for msg in msgs:
|
|
f = msg.getheader('from')
|
|
s = msg.getheader('subject')
|
|
d = (msg.getheader('date'))
|
|
print '%20.20s %18.18s %-30.30s'%(f, d[5:], s)
|
|
|