将python对象序列化成php能读取的格式(即能反序列化到对象unserialize)

#coding:utf-8# vim: encoding=utf-8:ft=python:et:sw=4:ts=8:sts=4:## Copyright (c) 2005 Scott Hurring.# Licensed under the GPL (undefined version).  import types, string  """Serialize class for the PHP serialization format.  @version v0.4 BETA@author Scott Hurring; scott at hurring dot com@copyright Copyright (c) 2005 Scott Hurring@license http://opensource.org/licenses/gpl-license.php GNU Public License$Id: PHPSerialize.py,v 1.1 2006/01/08 21:53:19 shurring Exp $  Most recent version can be found at:http://hurring.com/code/python/phpserialize/  Usage:# Create an instance of the serialize engines = PHPSerialize()# serialize some python data into a stringserialized_string = s.serialize(string)# encode a session list (php's session_encode) serialized_string = s.session_encode(list)"""  class PHPSerialize(object):    """    Class to serialize data using the PHP Serialize format.      Usage:    serialized_string = PHPSerialize().serialize(data)    serialized_string = PHPSerialize().session_encode(list)    """      def __init__(self):        pass      def session_encode(self, session):        """Thanks to Ken Restivo for suggesting the addition        of session_encode        """        out = ""        for (k,v) in session.items():            out = out + "%s|%s" % (k, self.serialize(v))        return out      def serialize(self, data):        return self.serialize_value(data)      def is_int(self, data):        """        Determine if a string var looks like an integer        TODO: Make this do what PHP does, instead of a hack        """        try:             int(data)            return True        except:            return False      def serialize_key(self, data):        """        Serialize a key, which follows different rules than when         serializing values.  Many thanks to Todd DeLuca for pointing         out that keys are serialized differently than values!          From http://us2.php.net/manual/en/language.types.array.php        A key may be either an integer or a string.         If a key is the standard representation of an integer, it will be        interpreted as such (i.e. "8" will be interpreted as int 8,        while "08" will be interpreted as "08").         Floats in key are truncated to integer.         """        # Integer, Long, Float, Boolean => integer        if type(data) is types.IntType or type(data) is types.LongType \        or type(data) is types.FloatType or type(data) is types.BooleanType:            return "i:%s;" % int(data)          # String => string or String => int (if string looks like int)        elif type(data) is types.StringType:            if self.is_int(data):                return "i:%s;" % int(data)            else:                return "s:%i:\"%s\";" % (len(data),  data);          # None / NULL => empty string        elif type(data) is types.NoneType:            return "s:0:\"\";"          # I dont know how to serialize this        else:            raise Exception("Unknown / Unhandled key  type (%s)!" % type(data))        def serialize_value(self, data):        """        Serialize a value.        """          # Integer => integer        if type(data) is types.IntType:            return "i:%s;" % data          # Float, Long => double        elif type(data) is types.FloatType or type(data) is types.LongType:            return "d:%s;" % data          # String => string or String => int (if string looks like int)        # Thanks to Todd DeLuca for noticing that PHP strings that        # look like integers are serialized as ints by PHP         elif type(data) is types.StringType:            if self.is_int(data):                return "i:%s;" % int(data)            else:                return "s:%i:\"%s\";" % (len(data), data);          # None / NULL        elif type(data) is types.NoneType:            return "N;";          # Tuple and List => array        # The 'a' array type is the only kind of list supported by PHP.        # array keys are automagically numbered up from 0        elif type(data) is types.ListType or type(data) is types.TupleType:            i = 0            out = []            # All arrays must have keys            for k in data:                out.append(self.serialize_key(i))                out.append(self.serialize_value(k))                i += 1            return "a:%i:{%s}" % (len(data), "".join(out))          # Dict => array        # Dict is the Python analogy of a PHP array        elif type(data) is types.DictType:            out = []            for k in data:                out.append(self.serialize_key(k))                out.append(self.serialize_value(data[k]))            return "a:%i:{%s}" % (len(data), "".join(out))          # Boolean => bool        elif type(data) is types.BooleanType:            return "b:%i;" % (data == 1)          # I dont know how to serialize this        else:            raise Exception("Unknown / Unhandled data type (%s)!" % type(data))        #!/usr/bin/env python2.4# vim: encoding=utf-8:ft=python:et:sw=4:ts=8:sts=4:## Copyright (c) 2005 Scott Hurring.# Licensed under the GPL (undefined version).  import types, string, re  """Unserialize class for the PHP serialization format.  @version v0.4 BETA@author Scott Hurring; scott at hurring dot com@copyright Copyright (c) 2005 Scott Hurring@license http://opensource.org/licenses/gpl-license.php GNU Public License$Id: PHPUnserialize.py,v 1.1 2006/01/08 21:53:19 shurring Exp $  Most recent version can be found at:http://hurring.com/code/python/phpserialize/  Usage:# Create an instance of the unserialize engineu = PHPUnserialize()# unserialize some string into python datadata = u.unserialize(serialized_string)"""  class PHPUnserialize(object):    """    Class to unserialize something from the PHP Serialize format.      Usage:    u = PHPUnserialize()    data = u.unserialize(serialized_string)    """      def __init__(self):        pass      def session_decode(self, data):        """Thanks to Ken Restivo for suggesting the addition        of session_encode        """        session = {}        while len(data) > 0:            m = re.match('^(\w+)\|', data)            if m:                key = m.group(1)                offset = len(key)+1                (dtype, dataoffset, value) = self._unserialize(data, offset)                offset = offset + dataoffset                data = data[offset:]                session[key] = value            else:                # No more stuff to decode                 return session          return session      def unserialize(self, data):        return self._unserialize(data, 0)[2]      def _unserialize(self, data, offset=0):        """        Find the next token and unserialize it.        Recurse on array.          offset = raw offset from start of data          return (type, offset, value)        """          buf = []        dtype = string.lower(data[offset:offset+1])          #print "# dtype =", dtype          # 't:' = 2 chars        dataoffset = offset + 2        typeconvert = lambda x : x        chars = datalength = 0           # int => Integer        if dtype == 'i':            typeconvert = lambda x : int(x)            (chars, readdata) = self.read_until(data, dataoffset, ';')            # +1 for end semicolon            dataoffset += chars + 1           # bool => Boolean        elif dtype == 'b':            typeconvert = lambda x : (int(x) == 1)            (chars, readdata) = self.read_until(data, dataoffset, ';')            # +1 for end semicolon            dataoffset += chars + 1          # double => Floating Point        elif dtype == 'd':            typeconvert = lambda x : float(x)            (chars, readdata) = self.read_until(data, dataoffset, ';')            # +1 for end semicolon            dataoffset += chars + 1          # n => None        elif dtype == 'n':            readdata = None          # s => String        elif dtype == 's':            (chars, stringlength) = self.read_until(data, dataoffset, ':')            # +2 for colons around length field            dataoffset += chars + 2              # +1 for start quote            (chars, readdata) = self.read_chars(data, dataoffset+1, int(stringlength))            # +2 for endquote semicolon            dataoffset += chars + 2              if chars != int(stringlength) != int(readdata):                raise Exception("String length mismatch")          # array => Dict        # If you originally serialized a Tuple or List, it will        # be unserialized as a Dict.  PHP doesn't have tuples or lists,        # only arrays - so everything has to get converted into an array        # when serializing and the original type of the array is lost        elif dtype == 'a':            readdata = {}              # How many keys does this list have?            (chars, keys) = self.read_until(data, dataoffset, ':')            # +2 for colons around length field            dataoffset += chars + 2              # Loop through and fetch this number of key/value pairs            for i in range(0, int(keys)):                # Read the key                (ktype, kchars, key) = self._unserialize(data, dataoffset)                dataoffset += kchars                #print "Key(%i) = (%s, %i, %s) %i" % (i, ktype, kchars, key, dataoffset)                  # Read value of the key                (vtype, vchars, value) = self._unserialize(data, dataoffset)                dataoffset += vchars                #print "Value(%i) = (%s, %i, %s) %i" % (i, vtype, vchars, value, dataoffset)                  # Set the list element                readdata[key] = value                  # +1 for end semicolon            dataoffset += 1            #chars = int(dataoffset) - start          # I don't know how to unserialize this        else:            raise Exception("Unknown / Unhandled data type (%s)!" % dtype)            return (dtype, dataoffset-offset, typeconvert(readdata))      def read_until(self, data, offset, stopchar):        """        Read from data[offset] until you encounter some char 'stopchar'.        """        buf = []        char = data[offset:offset+1]        i = 2        while char != stopchar:            # Consumed all the characters and havent found ';'            if i+offset > len(data):                raise Exception("Invalid")            buf.append(char)            char = data[offset+(i-1):offset+i]            i += 1          # (chars_read, data)        return (len(buf), "".join(buf))      def read_chars(self, data, offset, length):        """        Read 'length' number of chars from data[offset].        """        buf = []        # Account for the starting quote char        #offset += 1        for i in range(0, length):            char = data[offset+(i-1):offset+i]            buf.append(char)          # (chars_read, data)        return (len(buf), "".join(buf))def dumps(data, protocol=None):    return PHPSerialize().serialize(data)  def loads(data):    return PHPUnserialize().unserialize(data)

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