mboxconvert.py :  » Mobile » Python-for-PalmOS » Python-1.5.2+reduced-1.0 » Demo » scripts » Python Open Source

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Python Open Source » Mobile » Python for PalmOS 
Python for PalmOS » Python 1.5.2 reduced 1.0 » Demo » scripts » mboxconvert.py
#! /usr/bin/env python

# Convert  MH directories (1 message per file) or MMDF mailboxes (4x^A
# delimited) to unix mailbox (From ... delimited) on stdout.
# If -f is given, files contain one message per file (e.g. MH messages)

import rfc822
import sys
import time
import os
import stat
import getopt
import regex

def main():
  dofile = mmdf
  try:
    opts, args = getopt.getopt(sys.argv[1:], 'f')
  except getopt.error, msg:
    sys.stderr.write('%s\n' % msg)
    sys.exit(2)
  for o, a in opts:
    if o == '-f':
      dofile = message
  if not args:
    args = ['-']
  sts = 0
  for arg in args:
    if arg == '-' or arg == '':
      sts = dofile(sys.stdin) or sts
    elif os.path.isdir(arg):
      sts = mh(arg) or sts
    elif os.path.isfile(arg):
      try:
        f = open(arg)
      except IOError, msg:
        sys.stderr.write('%s: %s\n' % (arg, msg))
        sts = 1
        continue
      sts = dofile(f) or sts
      f.close()
    else:
      sys.stderr.write('%s: not found\n' % arg)
      sts = 1
  if sts:
    sys.exit(sts)

numeric = regex.compile('[1-9][0-9]*')

def mh(dir):
  sts = 0
  msgs = os.listdir(dir)
  for msg in msgs:
    if numeric.match(msg) != len(msg):
      continue
    fn = os.path.join(dir, msg)
    try:
      f = open(fn)
    except IOError, msg:
      sys.stderr.write('%s: %s\n' % (fn, msg))
      sts = 1
      continue
    sts = message(f) or sts
  return sts

def mmdf(f):
  sts = 0
  while 1:
    line = f.readline()
    if not line:
      break
    if line == '\1\1\1\1\n':
      sts = message(f, line) or sts
    else:
      sys.stderr.write(
        'Bad line in MMFD mailbox: %s\n' % `line`)
  return sts

counter = 0 # for generating unique Message-ID headers

def message(f, delimiter = ''):
  sts = 0
  # Parse RFC822 header
  m = rfc822.Message(f)
  # Write unix header line
  fullname, email = m.getaddr('From')
  tt = m.getdate('Date')
  if tt:
    t = time.mktime(tt)
  else:
    sys.stderr.write(
      'Unparseable date: %s\n' % `m.getheader('Date')`)
    t = os.fstat(f.fileno())[stat.ST_MTIME]
  print 'From', email, time.ctime(t)
  # Copy RFC822 header
  for line in m.headers:
    print line,
  # Invent Message-ID header if none is present
  if not m.has_key('message-id'):
    global counter
    counter = counter + 1
    msgid = "<%s.%d>" % (hex(t), counter)
    sys.stderr.write("Adding Message-ID %s (From %s)\n" %
         (msgid, email))
    print "Message-ID:", msgid
  print
  # Copy body
  while 1:
    line = f.readline()
    if line == delimiter:
      break
    if not line:
      sys.stderr.write('Unexpected EOF in message\n')
      sts = 1
      break
    if line[:5] == 'From ':
      line = '>' + line
    print line,
  # Print trailing newline
  print
  return sts

main()
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