#! /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 rfc822import sysimport timeimport osimport statimport getoptimport re 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 = re.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: %r\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: %r\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 if __name__ == "__main__":    main()