text: #! /usr/bin/python2.7
  
  """Mimification and unmimification of mail messages.
  
  Decode quoted-printable parts of a mail message or encode using
  quoted-printable.
  
  Usage:
          mimify(input, output)
          unmimify(input, output, decode_base64 = 0)
  to encode and decode respectively.  Input and output may be the name
  of a file or an open file object.  Only a readline() method is used
  on the input file, only a write() method is used on the output file.
  When using file names, the input and output file names may be the
  same.
  
  Interactive usage:
          mimify.py -e [infile [outfile]]
          mimify.py -d [infile [outfile]]
  to encode and decode respectively.  Infile defaults to standard
  input and outfile to standard output.
  """
  
  # Configure
  MAXLEN = 200    # if lines longer than this, encode as quoted-printable
  CHARSET = 'ISO-8859-1'  # default charset for non-US-ASCII mail
  QUOTE = '> '            # string replies are quoted with
  # End configure
  
  import re
  
  import warnings
  warnings.warn("the mimify module is deprecated; use the email package instead",
                  DeprecationWarning, 2)
  
  __all__ = ["mimify","unmimify","mime_encode_header","mime_decode_header"]
  
  qp = re.compile('^content-transfer-encoding:\\s*quoted-printable', re.I)
  base64_re = re.compile('^content-transfer-encoding:\\s*base64', re.I)
  mp = re.compile('^content-type:.*multipart/.*boundary="?([^;"\n]*)', re.I|re.S)
  chrset = re.compile('^(content-type:.*charset=")(us-ascii|iso-8859-[0-9]+)(".*)', re.I|re.S)
  he = re.compile('^-*\n')
  mime_code = re.compile('=([0-9a-f][0-9a-f])', re.I)
  mime_head = re.compile('=\\?iso-8859-1\\?q\\?([^? \t\n]+)\\?=', re.I)
  repl = re.compile('^subject:\\s+re: ', re.I)
  
  class File:
      """A simple fake file object that knows about limited read-ahead and
      boundaries.  The only supported method is readline()."""
  
      def __init__(self, file, boundary):
          self.file = file
          self.boundary = boundary
          self.peek = None
  
      def readline(self):
          if self.peek is not None:
              return ''
          line = self.file.readline()
          if not line:
              return line
          if self.boundary:
              if line == self.boundary + '\n':
                  self.peek = line
                  return ''
              if line == self.boundary + '--\n':
                  self.peek = line
                  return ''
          return line
  
  class HeaderFile:
      def __init__(self, file):
          self.file = file
          self.peek = None
  
      def readline(self):
          if self.peek is not None:
              line = self.peek
              self.peek = None
          else:
              line = self.file.readline()
          if not line:
              return line
          if he.match(line):
              return line
          while 1:
              self.peek = self.file.readline()
              if len(self.peek) == 0 or \
                 (self.peek[0] != ' ' and self.peek[0] != '\t'):
                  return line
              line = line + self.peek
              self.peek = None
  
  def mime_decode(line):
      """Decode a single line of quoted-printable text to 8bit."""
      newline = ''
      pos = 0
      while 1:
          res = mime_code.search(line, pos)
          if res is None:
              break
          newline = newline + line[pos:res.start(0)] + \
                    chr(int(res.group(1), 16))
          pos = res.end(0)
      return newline + line[pos:]
  
  def mime_decode_header(line):
      """Decode a header line to 8bit."""
      newline = ''
      pos = 0
      while 1:
          res = mime_head.search(line, pos)
          if res is None:
              break
          match = res.group(1)
          # convert underscores to spaces (before =XX conversion!)
          match = ' '.join(match.split('_'))
          newline = newline + line[pos:res.start(0)] + mime_decode(match)
          pos = res.end(0)
      return newline + line[pos:]
  
  def unmimify_part(ifile, ofile, decode_base64 = 0):
      """Convert a quoted-printable part of a MIME mail message to 8bit."""
      multipart = None
      quoted_printable = 0
      is_base64 = 0
      is_repl = 0
      if ifile.boundary and ifile.boundary[:2] == QUOTE:
          prefix = QUOTE
      else:
          prefix = ''
  
      # read header
      hfile = HeaderFile(ifile)
      while 1:
          line = hfile.readline()
          if not line:
              return
          if prefix and line[:len(prefix)] == prefix:
              line = line[len(prefix):]
              pref = prefix
          else:
              pref = ''
          line = mime_decode_header(line)
          if qp.match(line):
              quoted_printable = 1
              continue        # skip this header
          if decode_base64 and base64_re.match(line):
              is_base64 = 1
              continue
          ofile.write(pref + line)
          if not prefix and repl.match(line):
              # we're dealing with a reply message
              is_repl = 1
          mp_res = mp.match(line)
          if mp_res:
              multipart = '--' + mp_res.group(1)
          if he.match(line):
              break
      if is_repl and (quoted_printable or multipart):
          is_repl = 0
  
      # read body
      while 1:
          line = ifile.readline()
          if not line:
              return
          line = re.sub(mime_head, '\\1', line)
          if prefix and line[:len(prefix)] == prefix:
              line = line[len(prefix):]
              pref = prefix
          else:
              pref = ''
  ##              if is_repl and len(line) >= 4 and line[:4] == QUOTE+'--' and line[-3:] != '--\n':
  ##                      multipart = line[:-1]
          while multipart:
              if line == multipart + '--\n':
                  ofile.write(pref + line)
                  multipart = None
                  line = None
                  break
              if line == multipart + '\n':
                  ofile.write(pref + line)
                  nifile = File(ifile, multipart)
                  unmimify_part(nifile, ofile, decode_base64)
                  line = nifile.peek
                  if not line:
                      # premature end of file
                      break
                  continue
              # not a boundary between parts
              break
          if line and quoted_printable:
              while line[-2:] == '=\n':
                  line = line[:-2]
                  newline = ifile.readline()
                  if newline[:len(QUOTE)] == QUOTE:
                      newline = newline[len(QUOTE):]
                  line = line + newline
              line = mime_decode(line)
          if line and is_base64 and not pref:
              import base64
              line = base64.decodestring(line)
          if line:
              ofile.write(pref + line)
  
  def unmimify(infile, outfile, decode_base64 = 0):
      """Convert quoted-printable parts of a MIME mail message to 8bit."""
      if type(infile) == type(''):
          ifile = open(infile)
          if type(outfile) == type('') and infile == outfile:
              import os
              d, f = os.path.split(infile)
              os.rename(infile, os.path.join(d, ',' + f))
      else:
          ifile = infile
      if type(outfile) == type(''):
          ofile = open(outfile, 'w')
      else:
          ofile = outfile
      nifile = File(ifile, None)
      unmimify_part(nifile, ofile, decode_base64)
      ofile.flush()
  
  mime_char = re.compile('[=\177-\377]') # quote these chars in body
  mime_header_char = re.compile('[=?\177-\377]') # quote these in header
  
  def mime_encode(line, header):
      """Code a single line as quoted-printable.
      If header is set, quote some extra characters."""
      if header:
          reg = mime_header_char
      else:
          reg = mime_char
      newline = ''
      pos = 0
      if len(line) >= 5 and line[:5] == 'From ':
          # quote 'From ' at the start of a line for stupid mailers
          newline = ('=%02x' % ord('F')).upper()
          pos = 1
      while 1:
          res = reg.search(line, pos)
          if res is None:
              break
          newline = newline + line[pos:res.start(0)] + \
                    ('=%02x' % ord(res.group(0))).upper()
          pos = res.end(0)
      line = newline + line[pos:]
  
      newline = ''
      while len(line) >= 75:
          i = 73
          while line[i] == '=' or line[i-1] == '=':
              i = i - 1
          i = i + 1
          newline = newline + line[:i] + '=\n'
          line = line[i:]
      return newline + line
  
  mime_header = re.compile('([ \t(]|^)([-a-zA-Z0-9_+]*[\177-\377][-a-zA-Z0-9_+\177-\377]*)(?=[ \t)]|\n)')
  
  def mime_encode_header(line):
      """Code a single header line as quoted-printable."""
      newline = ''
      pos = 0
      while 1:
          res = mime_header.search(line, pos)
          if res is None:
              break
          newline = '%s%s%s=?%s?Q?%s?=' % \
                    (newline, line[pos:res.start(0)], res.group(1),
                     CHARSET, mime_encode(res.group(2), 1))
          pos = res.end(0)
      return newline + line[pos:]
  
  mv = re.compile('^mime-version:', re.I)
  cte = re.compile('^content-transfer-encoding:', re.I)
  iso_char = re.compile('[\177-\377]')
  
  def mimify_part(ifile, ofile, is_mime):
      """Convert an 8bit part of a MIME mail message to quoted-printable."""
      has_cte = is_qp = is_base64 = 0
      multipart = None
      must_quote_body = must_quote_header = has_iso_chars = 0
  
      header = []
      header_end = ''
      message = []
      message_end = ''
      # read header
      hfile = HeaderFile(ifile)
      while 1:
          line = hfile.readline()
          if not line:
              break
          if not must_quote_header and iso_char.search(line):
              must_quote_header = 1
          if mv.match(line):
              is_mime = 1
          if cte.match(line):
              has_cte = 1
              if qp.match(line):
                  is_qp = 1
              elif base64_re.match(line):
                  is_base64 = 1
          mp_res = mp.match(line)
          if mp_res:
              multipart = '--' + mp_res.group(1)
          if he.match(line):
              header_end = line
              break
          header.append(line)
  
      # read body
      while 1:
          line = ifile.readline()
          if not line:
              break
          if multipart:
              if line == multipart + '--\n':
                  message_end = line
                  break
              if line == multipart + '\n':
                  message_end = line
                  break
          if is_base64:
              message.append(line)
              continue
          if is_qp:
              while line[-2:] == '=\n':
                  line = line[:-2]
                  newline = ifile.readline()
                  if newline[:len(QUOTE)] == QUOTE:
                      newline = newline[len(QUOTE):]
                  line = line + newline
              line = mime_decode(line)
          message.append(line)
          if not has_iso_chars:
              if iso_char.search(line):
                  has_iso_chars = must_quote_body = 1
          if not must_quote_body:
              if len(line) > MAXLEN:
                  must_quote_body = 1
  
      # convert and output header and body
      for line in header:
          if must_quote_header:
              line = mime_encode_header(line)
          chrset_res = chrset.match(line)
          if chrset_res:
              if has_iso_chars:
                  # change us-ascii into iso-8859-1
                  if chrset_res.group(2).lower() == 'us-ascii':
                      line = '%s%s%s' % (chrset_res.group(1),
                                         CHARSET,
                                         chrset_res.group(3))
              else:
                  # change iso-8859-* into us-ascii
                  line = '%sus-ascii%s' % chrset_res.group(1, 3)
          if has_cte and cte.match(line):
              line = 'Content-Transfer-Encoding: '
              if is_base64:
                  line = line + 'base64\n'
              elif must_quote_body:
                  line = line + 'quoted-printable\n'
              else:
                  line = line + '7bit\n'
          ofile.write(line)
      if (must_quote_header or must_quote_body) and not is_mime:
          ofile.write('Mime-Version: 1.0\n')
          ofile.write('Content-Type: text/plain; ')
          if has_iso_chars:
              ofile.write('charset="%s"\n' % CHARSET)
          else:
              ofile.write('charset="us-ascii"\n')
      if must_quote_body and not has_cte:
          ofile.write('Content-Transfer-Encoding: quoted-printable\n')
      ofile.write(header_end)
  
      for line in message:
          if must_quote_body:
              line = mime_encode(line, 0)
          ofile.write(line)
      ofile.write(message_end)
  
      line = message_end
      while multipart:
          if line == multipart + '--\n':
              # read bit after the end of the last part
              while 1:
                  line = ifile.readline()
                  if not line:
                      return
                  if must_quote_body:
                      line = mime_encode(line, 0)
                  ofile.write(line)
          if line == multipart + '\n':
              nifile = File(ifile, multipart)
              mimify_part(nifile, ofile, 1)
              line = nifile.peek
              if not line:
                  # premature end of file
                  break
              ofile.write(line)
              continue
          # unexpectedly no multipart separator--copy rest of file
          while 1:
              line = ifile.readline()
              if not line:
                  return
              if must_quote_body:
                  line = mime_encode(line, 0)
              ofile.write(line)
  
  def mimify(infile, outfile):
      """Convert 8bit parts of a MIME mail message to quoted-printable."""
      if type(infile) == type(''):
          ifile = open(infile)
          if type(outfile) == type('') and infile == outfile:
              import os
              d, f = os.path.split(infile)
              os.rename(infile, os.path.join(d, ',' + f))
      else:
          ifile = infile
      if type(outfile) == type(''):
          ofile = open(outfile, 'w')
      else:
          ofile = outfile
      nifile = File(ifile, None)
      mimify_part(nifile, ofile, 0)
      ofile.flush()
  
  import sys
  if __name__ == '__main__' or (len(sys.argv) > 0 and sys.argv[0] == 'mimify'):
      import getopt
      usage = 'Usage: mimify [-l len] -[ed] [infile [outfile]]'
  
      decode_base64 = 0
      opts, args = getopt.getopt(sys.argv[1:], 'l:edb')
      if len(args) not in (0, 1, 2):
          print usage
          sys.exit(1)
      if (('-e', '') in opts) == (('-d', '') in opts) or \
         ((('-b', '') in opts) and (('-d', '') not in opts)):
          print usage
          sys.exit(1)
      for o, a in opts:
          if o == '-e':
              encode = mimify
          elif o == '-d':
              encode = unmimify
          elif o == '-l':
              try:
                  MAXLEN = int(a)
              except (ValueError, OverflowError):
                  print usage
                  sys.exit(1)
          elif o == '-b':
              decode_base64 = 1
      if len(args) == 0:
          encode_args = (sys.stdin, sys.stdout)
      elif len(args) == 1:
          encode_args = (args[0], sys.stdout)
      else:
          encode_args = (args[0], args[1])
      if decode_base64:
          encode_args = encode_args + (decode_base64,)
      encode(*encode_args)
  