text: #!/usr/bin/env python
  #
  
  ####
  # Copyright 2000 by Timothy O'Malley <timo@alum.mit.edu>
  #
  #                All Rights Reserved
  #
  # Permission to use, copy, modify, and distribute this software
  # and its documentation for any purpose and without fee is hereby
  # granted, provided that the above copyright notice appear in all
  # copies and that both that copyright notice and this permission
  # notice appear in supporting documentation, and that the name of
  # Timothy O'Malley  not be used in advertising or publicity
  # pertaining to distribution of the software without specific, written
  # prior permission.
  #
  # Timothy O'Malley DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS
  # SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
  # AND FITNESS, IN NO EVENT SHALL Timothy O'Malley BE LIABLE FOR
  # ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
  # WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS,
  # WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS
  # ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
  # PERFORMANCE OF THIS SOFTWARE.
  #
  ####
  #
  # Id: Cookie.py,v 2.29 2000/08/23 05:28:49 timo Exp
  #   by Timothy O'Malley <timo@alum.mit.edu>
  #
  #  Cookie.py is a Python module for the handling of HTTP
  #  cookies as a Python dictionary.  See RFC 2109 for more
  #  information on cookies.
  #
  #  The original idea to treat Cookies as a dictionary came from
  #  Dave Mitchell (davem@magnet.com) in 1995, when he released the
  #  first version of nscookie.py.
  #
  ####
  
  r"""
  Here's a sample session to show how to use this module.
  At the moment, this is the only documentation.
  
  The Basics
  ----------
  
  Importing is easy..
  
     >>> import Cookie
  
  Most of the time you start by creating a cookie.  Cookies come in
  three flavors, each with slightly different encoding semantics, but
  more on that later.
  
     >>> C = Cookie.SimpleCookie()
     >>> C = Cookie.SerialCookie()
     >>> C = Cookie.SmartCookie()
  
  [Note: Long-time users of Cookie.py will remember using
  Cookie.Cookie() to create an Cookie object.  Although deprecated, it
  is still supported by the code.  See the Backward Compatibility notes
  for more information.]
  
  Once you've created your Cookie, you can add values just as if it were
  a dictionary.
  
     >>> C = Cookie.SmartCookie()
     >>> C["fig"] = "newton"
     >>> C["sugar"] = "wafer"
     >>> C.output()
     'Set-Cookie: fig=newton\r\nSet-Cookie: sugar=wafer'
  
  Notice that the printable representation of a Cookie is the
  appropriate format for a Set-Cookie: header.  This is the
  default behavior.  You can change the header and printed
  attributes by using the .output() function
  
     >>> C = Cookie.SmartCookie()
     >>> C["rocky"] = "road"
     >>> C["rocky"]["path"] = "/cookie"
     >>> print C.output(header="Cookie:")
     Cookie: rocky=road; Path=/cookie
     >>> print C.output(attrs=[], header="Cookie:")
     Cookie: rocky=road
  
  The load() method of a Cookie extracts cookies from a string.  In a
  CGI script, you would use this method to extract the cookies from the
  HTTP_COOKIE environment variable.
  
     >>> C = Cookie.SmartCookie()
     >>> C.load("chips=ahoy; vienna=finger")
     >>> C.output()
     'Set-Cookie: chips=ahoy\r\nSet-Cookie: vienna=finger'
  
  The load() method is darn-tootin smart about identifying cookies
  within a string.  Escaped quotation marks, nested semicolons, and other
  such trickeries do not confuse it.
  
     >>> C = Cookie.SmartCookie()
     >>> C.load('keebler="E=everybody; L=\\"Loves\\"; fudge=\\012;";')
     >>> print C
     Set-Cookie: keebler="E=everybody; L=\"Loves\"; fudge=\012;"
  
  Each element of the Cookie also supports all of the RFC 2109
  Cookie attributes.  Here's an example which sets the Path
  attribute.
  
     >>> C = Cookie.SmartCookie()
     >>> C["oreo"] = "doublestuff"
     >>> C["oreo"]["path"] = "/"
     >>> print C
     Set-Cookie: oreo=doublestuff; Path=/
  
  Each dictionary element has a 'value' attribute, which gives you
  back the value associated with the key.
  
     >>> C = Cookie.SmartCookie()
     >>> C["twix"] = "none for you"
     >>> C["twix"].value
     'none for you'
  
  
  A Bit More Advanced
  -------------------
  
  As mentioned before, there are three different flavors of Cookie
  objects, each with different encoding/decoding semantics.  This
  section briefly discusses the differences.
  
  SimpleCookie
  
  The SimpleCookie expects that all values should be standard strings.
  Just to be sure, SimpleCookie invokes the str() builtin to convert
  the value to a string, when the values are set dictionary-style.
  
     >>> C = Cookie.SimpleCookie()
     >>> C["number"] = 7
     >>> C["string"] = "seven"
     >>> C["number"].value
     '7'
     >>> C["string"].value
     'seven'
     >>> C.output()
     'Set-Cookie: number=7\r\nSet-Cookie: string=seven'
  
  
  SerialCookie
  
  The SerialCookie expects that all values should be serialized using
  cPickle (or pickle, if cPickle isn't available).  As a result of
  serializing, SerialCookie can save almost any Python object to a
  value, and recover the exact same object when the cookie has been
  returned.  (SerialCookie can yield some strange-looking cookie
  values, however.)
  
     >>> C = Cookie.SerialCookie()
     >>> C["number"] = 7
     >>> C["string"] = "seven"
     >>> C["number"].value
     7
     >>> C["string"].value
     'seven'
     >>> C.output()
     'Set-Cookie: number="I7\\012."\r\nSet-Cookie: string="S\'seven\'\\012p1\\012."'
  
  Be warned, however, if SerialCookie cannot de-serialize a value (because
  it isn't a valid pickle'd object), IT WILL RAISE AN EXCEPTION.
  
  
  SmartCookie
  
  The SmartCookie combines aspects of each of the other two flavors.
  When setting a value in a dictionary-fashion, the SmartCookie will
  serialize (ala cPickle) the value *if and only if* it isn't a
  Python string.  String objects are *not* serialized.  Similarly,
  when the load() method parses out values, it attempts to de-serialize
  the value.  If it fails, then it fallsback to treating the value
  as a string.
  
     >>> C = Cookie.SmartCookie()
     >>> C["number"] = 7
     >>> C["string"] = "seven"
     >>> C["number"].value
     7
     >>> C["string"].value
     'seven'
     >>> C.output()
     'Set-Cookie: number="I7\\012."\r\nSet-Cookie: string=seven'
  
  
  Backwards Compatibility
  -----------------------
  
  In order to keep compatibilty with earlier versions of Cookie.py,
  it is still possible to use Cookie.Cookie() to create a Cookie.  In
  fact, this simply returns a SmartCookie.
  
     >>> C = Cookie.Cookie()
     >>> print C.__class__.__name__
     SmartCookie
  
  
  Finis.
  """  #"
  #     ^
  #     |----helps out font-lock
  
  #
  # Import our required modules
  #
  import string
  
  try:
      from cPickle import dumps, loads
  except ImportError:
      from pickle import dumps, loads
  
  import re, warnings
  
  __all__ = ["CookieError","BaseCookie","SimpleCookie","SerialCookie",
             "SmartCookie","Cookie"]
  
  _nulljoin = ''.join
  _semispacejoin = '; '.join
  _spacejoin = ' '.join
  
  #
  # Define an exception visible to External modules
  #
  class CookieError(Exception):
      pass
  
  
  # These quoting routines conform to the RFC2109 specification, which in
  # turn references the character definitions from RFC2068.  They provide
  # a two-way quoting algorithm.  Any non-text character is translated
  # into a 4 character sequence: a forward-slash followed by the
  # three-digit octal equivalent of the character.  Any '\' or '"' is
  # quoted with a preceeding '\' slash.
  #
  # These are taken from RFC2068 and RFC2109.
  #       _LegalChars       is the list of chars which don't require "'s
  #       _Translator       hash-table for fast quoting
  #
  _LegalChars       = string.ascii_letters + string.digits + "!#$%&'*+-.^_`|~"
  _Translator       = {
      '\000' : '\\000',  '\001' : '\\001',  '\002' : '\\002',
      '\003' : '\\003',  '\004' : '\\004',  '\005' : '\\005',
      '\006' : '\\006',  '\007' : '\\007',  '\010' : '\\010',
      '\011' : '\\011',  '\012' : '\\012',  '\013' : '\\013',
      '\014' : '\\014',  '\015' : '\\015',  '\016' : '\\016',
      '\017' : '\\017',  '\020' : '\\020',  '\021' : '\\021',
      '\022' : '\\022',  '\023' : '\\023',  '\024' : '\\024',
      '\025' : '\\025',  '\026' : '\\026',  '\027' : '\\027',
      '\030' : '\\030',  '\031' : '\\031',  '\032' : '\\032',
      '\033' : '\\033',  '\034' : '\\034',  '\035' : '\\035',
      '\036' : '\\036',  '\037' : '\\037',
  
      '"' : '\\"',       '\\' : '\\\\',
  
      '\177' : '\\177',  '\200' : '\\200',  '\201' : '\\201',
      '\202' : '\\202',  '\203' : '\\203',  '\204' : '\\204',
      '\205' : '\\205',  '\206' : '\\206',  '\207' : '\\207',
      '\210' : '\\210',  '\211' : '\\211',  '\212' : '\\212',
      '\213' : '\\213',  '\214' : '\\214',  '\215' : '\\215',
      '\216' : '\\216',  '\217' : '\\217',  '\220' : '\\220',
      '\221' : '\\221',  '\222' : '\\222',  '\223' : '\\223',
      '\224' : '\\224',  '\225' : '\\225',  '\226' : '\\226',
      '\227' : '\\227',  '\230' : '\\230',  '\231' : '\\231',
      '\232' : '\\232',  '\233' : '\\233',  '\234' : '\\234',
      '\235' : '\\235',  '\236' : '\\236',  '\237' : '\\237',
      '\240' : '\\240',  '\241' : '\\241',  '\242' : '\\242',
      '\243' : '\\243',  '\244' : '\\244',  '\245' : '\\245',
      '\246' : '\\246',  '\247' : '\\247',  '\250' : '\\250',
      '\251' : '\\251',  '\252' : '\\252',  '\253' : '\\253',
      '\254' : '\\254',  '\255' : '\\255',  '\256' : '\\256',
      '\257' : '\\257',  '\260' : '\\260',  '\261' : '\\261',
      '\262' : '\\262',  '\263' : '\\263',  '\264' : '\\264',
      '\265' : '\\265',  '\266' : '\\266',  '\267' : '\\267',
      '\270' : '\\270',  '\271' : '\\271',  '\272' : '\\272',
      '\273' : '\\273',  '\274' : '\\274',  '\275' : '\\275',
      '\276' : '\\276',  '\277' : '\\277',  '\300' : '\\300',
      '\301' : '\\301',  '\302' : '\\302',  '\303' : '\\303',
      '\304' : '\\304',  '\305' : '\\305',  '\306' : '\\306',
      '\307' : '\\307',  '\310' : '\\310',  '\311' : '\\311',
      '\312' : '\\312',  '\313' : '\\313',  '\314' : '\\314',
      '\315' : '\\315',  '\316' : '\\316',  '\317' : '\\317',
      '\320' : '\\320',  '\321' : '\\321',  '\322' : '\\322',
      '\323' : '\\323',  '\324' : '\\324',  '\325' : '\\325',
      '\326' : '\\326',  '\327' : '\\327',  '\330' : '\\330',
      '\331' : '\\331',  '\332' : '\\332',  '\333' : '\\333',
      '\334' : '\\334',  '\335' : '\\335',  '\336' : '\\336',
      '\337' : '\\337',  '\340' : '\\340',  '\341' : '\\341',
      '\342' : '\\342',  '\343' : '\\343',  '\344' : '\\344',
      '\345' : '\\345',  '\346' : '\\346',  '\347' : '\\347',
      '\350' : '\\350',  '\351' : '\\351',  '\352' : '\\352',
      '\353' : '\\353',  '\354' : '\\354',  '\355' : '\\355',
      '\356' : '\\356',  '\357' : '\\357',  '\360' : '\\360',
      '\361' : '\\361',  '\362' : '\\362',  '\363' : '\\363',
      '\364' : '\\364',  '\365' : '\\365',  '\366' : '\\366',
      '\367' : '\\367',  '\370' : '\\370',  '\371' : '\\371',
      '\372' : '\\372',  '\373' : '\\373',  '\374' : '\\374',
      '\375' : '\\375',  '\376' : '\\376',  '\377' : '\\377'
      }
  
  _idmap = ''.join(chr(x) for x in xrange(256))
  
  def _quote(str, LegalChars=_LegalChars,
             idmap=_idmap, translate=string.translate):
      #
      # If the string does not need to be double-quoted,
      # then just return the string.  Otherwise, surround
      # the string in doublequotes and precede quote (with a \)
      # special characters.
      #
      if "" == translate(str, idmap, LegalChars):
          return str
      else:
          return '"' + _nulljoin( map(_Translator.get, str, str) ) + '"'
  # end _quote
  
  
  _OctalPatt = re.compile(r"\\[0-3][0-7][0-7]")
  _QuotePatt = re.compile(r"[\\].")
  
  def _unquote(str):
      # If there aren't any doublequotes,
      # then there can't be any special characters.  See RFC 2109.
      if  len(str) < 2:
          return str
      if str[0] != '"' or str[-1] != '"':
          return str
  
      # We have to assume that we must decode this string.
      # Down to work.
  
      # Remove the "s
      str = str[1:-1]
  
      # Check for special sequences.  Examples:
      #    \012 --> \n
      #    \"   --> "
      #
      i = 0
      n = len(str)
      res = []
      while 0 <= i < n:
          Omatch = _OctalPatt.search(str, i)
          Qmatch = _QuotePatt.search(str, i)
          if not Omatch and not Qmatch:              # Neither matched
              res.append(str[i:])
              break
          # else:
          j = k = -1
          if Omatch: j = Omatch.start(0)
          if Qmatch: k = Qmatch.start(0)
          if Qmatch and ( not Omatch or k < j ):     # QuotePatt matched
              res.append(str[i:k])
              res.append(str[k+1])
              i = k+2
          else:                                      # OctalPatt matched
              res.append(str[i:j])
              res.append( chr( int(str[j+1:j+4], 8) ) )
              i = j+4
      return _nulljoin(res)
  # end _unquote
  
  # The _getdate() routine is used to set the expiration time in
  # the cookie's HTTP header.      By default, _getdate() returns the
  # current time in the appropriate "expires" format for a
  # Set-Cookie header.     The one optional argument is an offset from
  # now, in seconds.      For example, an offset of -3600 means "one hour ago".
  # The offset may be a floating point number.
  #
  
  _weekdayname = ['Mon', 'Tue', 'Wed', 'Thu', 'Fri', 'Sat', 'Sun']
  
  _monthname = [None,
                'Jan', 'Feb', 'Mar', 'Apr', 'May', 'Jun',
                'Jul', 'Aug', 'Sep', 'Oct', 'Nov', 'Dec']
  
  def _getdate(future=0, weekdayname=_weekdayname, monthname=_monthname):
      from time import gmtime, time
      now = time()
      year, month, day, hh, mm, ss, wd, y, z = gmtime(now + future)
      return "%s, %02d-%3s-%4d %02d:%02d:%02d GMT" % \
             (weekdayname[wd], day, monthname[month], year, hh, mm, ss)
  
  
  #
  # A class to hold ONE key,value pair.
  # In a cookie, each such pair may have several attributes.
  #       so this class is used to keep the attributes associated
  #       with the appropriate key,value pair.
  # This class also includes a coded_value attribute, which
  #       is used to hold the network representation of the
  #       value.  This is most useful when Python objects are
  #       pickled for network transit.
  #
  
  class Morsel(dict):
      # RFC 2109 lists these attributes as reserved:
      #   path       comment         domain
      #   max-age    secure      version
      #
      # For historical reasons, these attributes are also reserved:
      #   expires
      #
      # This is an extension from Microsoft:
      #   httponly
      #
      # This dictionary provides a mapping from the lowercase
      # variant on the left to the appropriate traditional
      # formatting on the right.
      _reserved = { "expires" : "expires",
                     "path"        : "Path",
                     "comment" : "Comment",
                     "domain"      : "Domain",
                     "max-age" : "Max-Age",
                     "secure"      : "secure",
                     "httponly"  : "httponly",
                     "version" : "Version",
                     }
  
      def __init__(self):
          # Set defaults
          self.key = self.value = self.coded_value = None
  
          # Set default attributes
          for K in self._reserved:
              dict.__setitem__(self, K, "")
      # end __init__
  
      def __setitem__(self, K, V):
          K = K.lower()
          if not K in self._reserved:
              raise CookieError("Invalid Attribute %s" % K)
          dict.__setitem__(self, K, V)
      # end __setitem__
  
      def isReservedKey(self, K):
          return K.lower() in self._reserved
      # end isReservedKey
  
      def set(self, key, val, coded_val,
              LegalChars=_LegalChars,
              idmap=_idmap, translate=string.translate):
          # First we verify that the key isn't a reserved word
          # Second we make sure it only contains legal characters
          if key.lower() in self._reserved:
              raise CookieError("Attempt to set a reserved key: %s" % key)
          if "" != translate(key, idmap, LegalChars):
              raise CookieError("Illegal key value: %s" % key)
  
          # It's a good key, so save it.
          self.key                 = key
          self.value               = val
          self.coded_value         = coded_val
      # end set
  
      def output(self, attrs=None, header = "Set-Cookie:"):
          return "%s %s" % ( header, self.OutputString(attrs) )
  
      __str__ = output
  
      def __repr__(self):
          return '<%s: %s=%s>' % (self.__class__.__name__,
                                  self.key, repr(self.value) )
  
      def js_output(self, attrs=None):
          # Print javascript
          return """
          <script type="text/javascript">
          <!-- begin hiding
          document.cookie = \"%s\";
          // end hiding -->
          </script>
          """ % ( self.OutputString(attrs), )
      # end js_output()
  
      def OutputString(self, attrs=None):
          # Build up our result
          #
          result = []
          RA = result.append
  
          # First, the key=value pair
          RA("%s=%s" % (self.key, self.coded_value))
  
          # Now add any defined attributes
          if attrs is None:
              attrs = self._reserved
          items = self.items()
          items.sort()
          for K,V in items:
              if V == "": continue
              if K not in attrs: continue
              if K == "expires" and type(V) == type(1):
                  RA("%s=%s" % (self._reserved[K], _getdate(V)))
              elif K == "max-age" and type(V) == type(1):
                  RA("%s=%d" % (self._reserved[K], V))
              elif K == "secure":
                  RA(str(self._reserved[K]))
              elif K == "httponly":
                  RA(str(self._reserved[K]))
              else:
                  RA("%s=%s" % (self._reserved[K], V))
  
          # Return the result
          return _semispacejoin(result)
      # end OutputString
  # end Morsel class
  
  
  
  #
  # Pattern for finding cookie
  #
  # This used to be strict parsing based on the RFC2109 and RFC2068
  # specifications.  I have since discovered that MSIE 3.0x doesn't
  # follow the character rules outlined in those specs.  As a
  # result, the parsing rules here are less strict.
  #
  
  _LegalCharsPatt  = r"[\w\d!#%&'~_`><@,:/\$\*\+\-\.\^\|\)\(\?\}\{\=]"
  _CookiePattern = re.compile(
      r"(?x)"                       # This is a Verbose pattern
      r"(?P<key>"                   # Start of group 'key'
      ""+ _LegalCharsPatt +"+?"     # Any word of at least one letter, nongreedy
      r")"                          # End of group 'key'
      r"\s*=\s*"                    # Equal Sign
      r"(?P<val>"                   # Start of group 'val'
      r'"(?:[^\\"]|\\.)*"'            # Any doublequoted string
      r"|"                            # or
      ""+ _LegalCharsPatt +"*"        # Any word or empty string
      r")"                          # End of group 'val'
      r"\s*;?"                      # Probably ending in a semi-colon
      )
  
  
  # At long last, here is the cookie class.
  #   Using this class is almost just like using a dictionary.
  # See this module's docstring for example usage.
  #
  class BaseCookie(dict):
      # A container class for a set of Morsels
      #
  
      def value_decode(self, val):
          """real_value, coded_value = value_decode(STRING)
          Called prior to setting a cookie's value from the network
          representation.  The VALUE is the value read from HTTP
          header.
          Override this function to modify the behavior of cookies.
          """
          return val, val
      # end value_encode
  
      def value_encode(self, val):
          """real_value, coded_value = value_encode(VALUE)
          Called prior to setting a cookie's value from the dictionary
          representation.  The VALUE is the value being assigned.
          Override this function to modify the behavior of cookies.
          """
          strval = str(val)
          return strval, strval
      # end value_encode
  
      def __init__(self, input=None):
          if input: self.load(input)
      # end __init__
  
      def __set(self, key, real_value, coded_value):
          """Private method for setting a cookie's value"""
          M = self.get(key, Morsel())
          M.set(key, real_value, coded_value)
          dict.__setitem__(self, key, M)
      # end __set
  
      def __setitem__(self, key, value):
          """Dictionary style assignment."""
          rval, cval = self.value_encode(value)
          self.__set(key, rval, cval)
      # end __setitem__
  
      def output(self, attrs=None, header="Set-Cookie:", sep="\015\012"):
          """Return a string suitable for HTTP."""
          result = []
          items = self.items()
          items.sort()
          for K,V in items:
              result.append( V.output(attrs, header) )
          return sep.join(result)
      # end output
  
      __str__ = output
  
      def __repr__(self):
          L = []
          items = self.items()
          items.sort()
          for K,V in items:
              L.append( '%s=%s' % (K,repr(V.value) ) )
          return '<%s: %s>' % (self.__class__.__name__, _spacejoin(L))
  
      def js_output(self, attrs=None):
          """Return a string suitable for JavaScript."""
          result = []
          items = self.items()
          items.sort()
          for K,V in items:
              result.append( V.js_output(attrs) )
          return _nulljoin(result)
      # end js_output
  
      def load(self, rawdata):
          """Load cookies from a string (presumably HTTP_COOKIE) or
          from a dictionary.  Loading cookies from a dictionary 'd'
          is equivalent to calling:
              map(Cookie.__setitem__, d.keys(), d.values())
          """
          if type(rawdata) == type(""):
              self.__ParseString(rawdata)
          else:
              # self.update() wouldn't call our custom __setitem__
              for k, v in rawdata.items():
                  self[k] = v
          return
      # end load()
  
      def __ParseString(self, str, patt=_CookiePattern):
          i = 0            # Our starting point
          n = len(str)     # Length of string
          M = None         # current morsel
  
          while 0 <= i < n:
              # Start looking for a cookie
              match = patt.search(str, i)
              if not match: break          # No more cookies
  
              K,V = match.group("key"), match.group("val")
              i = match.end(0)
  
              # Parse the key, value in case it's metainfo
              if K[0] == "$":
                  # We ignore attributes which pertain to the cookie
                  # mechanism as a whole.  See RFC 2109.
                  # (Does anyone care?)
                  if M:
                      M[ K[1:] ] = V
              elif K.lower() in Morsel._reserved:
                  if M:
                      M[ K ] = _unquote(V)
              else:
                  rval, cval = self.value_decode(V)
                  self.__set(K, rval, cval)
                  M = self[K]
      # end __ParseString
  # end BaseCookie class
  
  class SimpleCookie(BaseCookie):
      """SimpleCookie
      SimpleCookie supports strings as cookie values.  When setting
      the value using the dictionary assignment notation, SimpleCookie
      calls the builtin str() to convert the value to a string.  Values
      received from HTTP are kept as strings.
      """
      def value_decode(self, val):
          return _unquote( val ), val
      def value_encode(self, val):
          strval = str(val)
          return strval, _quote( strval )
  # end SimpleCookie
  
  class SerialCookie(BaseCookie):
      """SerialCookie
      SerialCookie supports arbitrary objects as cookie values. All
      values are serialized (using cPickle) before being sent to the
      client.  All incoming values are assumed to be valid Pickle
      representations.  IF AN INCOMING VALUE IS NOT IN A VALID PICKLE
      FORMAT, THEN AN EXCEPTION WILL BE RAISED.
  
      Note: Large cookie values add overhead because they must be
      retransmitted on every HTTP transaction.
  
      Note: HTTP has a 2k limit on the size of a cookie.  This class
      does not check for this limit, so be careful!!!
      """
      def __init__(self, input=None):
          warnings.warn("SerialCookie class is insecure; do not use it",
                        DeprecationWarning)
          BaseCookie.__init__(self, input)
      # end __init__
      def value_decode(self, val):
          # This could raise an exception!
          return loads( _unquote(val) ), val
      def value_encode(self, val):
          return val, _quote( dumps(val) )
  # end SerialCookie
  
  class SmartCookie(BaseCookie):
      """SmartCookie
      SmartCookie supports arbitrary objects as cookie values.  If the
      object is a string, then it is quoted.  If the object is not a
      string, however, then SmartCookie will use cPickle to serialize
      the object into a string representation.
  
      Note: Large cookie values add overhead because they must be
      retransmitted on every HTTP transaction.
  
      Note: HTTP has a 2k limit on the size of a cookie.  This class
      does not check for this limit, so be careful!!!
      """
      def __init__(self, input=None):
          warnings.warn("Cookie/SmartCookie class is insecure; do not use it",
                        DeprecationWarning)
          BaseCookie.__init__(self, input)
      # end __init__
      def value_decode(self, val):
          strval = _unquote(val)
          try:
              return loads(strval), val
          except:
              return strval, val
      def value_encode(self, val):
          if type(val) == type(""):
              return val, _quote(val)
          else:
              return val, _quote( dumps(val) )
  # end SmartCookie
  
  
  ###########################################################
  # Backwards Compatibility:  Don't break any existing code!
  
  # We provide Cookie() as an alias for SmartCookie()
  Cookie = SmartCookie
  
  #
  ###########################################################
  
  def _test():
      import doctest, Cookie
      return doctest.testmod(Cookie)
  
  if __name__ == "__main__":
      _test()
  
  
  #Local Variables:
  #tab-width: 4
  #end:
  