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Diffstat (limited to 'mediawiki/PHPUnserialize.py')
| -rw-r--r-- | mediawiki/PHPUnserialize.py | 187 |
1 files changed, 0 insertions, 187 deletions
diff --git a/mediawiki/PHPUnserialize.py b/mediawiki/PHPUnserialize.py deleted file mode 100644 index b59c869c..00000000 --- a/mediawiki/PHPUnserialize.py +++ /dev/null @@ -1,187 +0,0 @@ -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 engine -u = PHPUnserialize() -# unserialize some string into python data -data = u.unserialize(serialized_string) - -Please see README.txt for more information. -""" - -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)) |