+++ /dev/null
-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 engine
-s = PHPSerialize()
-# serialize some python data into a string
-serialized_string = s.serialize(string)
-# encode a session list (php's session_encode)
-serialized_string = s.session_encode(list)
-
-See README.txt for more information.
-"""
-
-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))
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