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import os.path, struct, sys
class StructType(tuple):
def __getitem__(self, value):
return [self] * value
def __call__(self, value, endian='<'):
if isinstance(value, str):
return struct.unpack(endian + tuple.__getitem__(self, 0), value[:tuple.__getitem__(self, 1)])[0]
else:
return struct.pack(endian + tuple.__getitem__(self, 0), value)
class StructException(Exception):
pass
class Struct(object):
__slots__ = ('__attrs__', '__baked__', '__defs__', '__endian__', '__next__', '__sizes__', '__values__')
int8 = StructType(('b', 1))
uint8 = StructType(('B', 1))
int16 = StructType(('h', 2))
uint16 = StructType(('H', 2))
int32 = StructType(('l', 4))
uint32 = StructType(('L', 4))
int64 = StructType(('q', 8))
uint64 = StructType(('Q', 8))
float = StructType(('f', 4))
def string(cls, len, offset=0, encoding=None, stripNulls=False, value=''):
return StructType(('string', (len, offset, encoding, stripNulls, value)))
string = classmethod(string)
LE = '<'
BE = '>'
__endian__ = '<'
def __init__(self, func=None, unpack=None, **kwargs):
self.__defs__ = []
self.__sizes__ = []
self.__attrs__ = []
self.__values__ = {}
self.__next__ = True
self.__baked__ = False
if func == None:
self.__format__()
else:
sys.settrace(self.__trace__)
func()
for name in func.func_code.co_varnames:
value = self.__frame__.f_locals[name]
self.__setattr__(name, value)
self.__baked__ = True
if unpack != None:
if isinstance(unpack, tuple):
self.unpack(*unpack)
else:
self.unpack(unpack)
if len(kwargs):
for name in kwargs:
self.__values__[name] = kwargs[name]
def __trace__(self, frame, event, arg):
self.__frame__ = frame
sys.settrace(None)
def __setattr__(self, name, value):
if name in self.__slots__:
return object.__setattr__(self, name, value)
if self.__baked__ == False:
if not isinstance(value, list):
value = [value]
attrname = name
else:
attrname = '*' + name
self.__values__[name] = None
for sub in value:
if isinstance(sub, Struct):
sub = sub.__class__
try:
if issubclass(sub, Struct):
sub = ('struct', sub)
except TypeError:
pass
type_, size = tuple(sub)
if type_ == 'string':
self.__defs__.append(Struct.string)
self.__sizes__.append(size)
self.__attrs__.append(attrname)
self.__next__ = True
if attrname[0] != '*':
self.__values__[name] = size[3]
elif self.__values__[name] == None:
self.__values__[name] = [size[3] for val in value]
elif type_ == 'struct':
self.__defs__.append(Struct)
self.__sizes__.append(size)
self.__attrs__.append(attrname)
self.__next__ = True
if attrname[0] != '*':
self.__values__[name] = size()
elif self.__values__[name] == None:
self.__values__[name] = [size() for val in value]
else:
if self.__next__:
self.__defs__.append('')
self.__sizes__.append(0)
self.__attrs__.append([])
self.__next__ = False
self.__defs__[-1] += type_
self.__sizes__[-1] += size
self.__attrs__[-1].append(attrname)
if attrname[0] != '*':
self.__values__[name] = 0
elif self.__values__[name] == None:
self.__values__[name] = [0 for val in value]
else:
try:
self.__values__[name] = value
except KeyError:
raise AttributeError(name)
def __getattr__(self, name):
if self.__baked__ == False:
return name
else:
try:
return self.__values__[name]
except KeyError:
raise AttributeError(name)
def __len__(self):
ret = 0
arraypos, arrayname = None, None
for i in range(len(self.__defs__)):
sdef, size, attrs = self.__defs__[i], self.__sizes__[i], self.__attrs__[i]
if sdef == Struct.string:
size, offset, encoding, stripNulls, value = size
if isinstance(size, str):
size = self.__values__[size] + offset
elif sdef == Struct:
if attrs[0] == '*':
if arrayname != attrs:
arrayname = attrs
arraypos = 0
size = len(self.__values__[attrs[1:]][arraypos])
size = len(self.__values__[attrs])
ret += size
return ret
def unpack(self, data, pos=0):
for name in self.__values__:
if not isinstance(self.__values__[name], Struct):
self.__values__[name] = None
elif self.__values__[name].__class__ == list and len(self.__values__[name]) != 0:
if not isinstance(self.__values__[name][0], Struct):
self.__values__[name] = None
arraypos, arrayname = None, None
for i in range(len(self.__defs__)):
sdef, size, attrs = self.__defs__[i], self.__sizes__[i], self.__attrs__[i]
if sdef == Struct.string:
size, offset, encoding, stripNulls, value = size
if isinstance(size, str):
size = self.__values__[size] + offset
temp = data[pos:pos+size]
if len(temp) != size:
raise StructException('Expected %i byte string, got %i' % (size, len(temp)))
if encoding != None:
temp = temp.decode(encoding)
if stripNulls:
temp = temp.rstrip('\0')
if attrs[0] == '*':
name = attrs[1:]
if self.__values__[name] == None:
self.__values__[name] = []
self.__values__[name].append(temp)
else:
self.__values__[attrs] = temp
pos += size
elif sdef == Struct:
if attrs[0] == '*':
if arrayname != attrs:
arrayname = attrs
arraypos = 0
name = attrs[1:]
self.__values__[attrs][arraypos].unpack(data, pos)
pos += len(self.__values__[attrs][arraypos])
arraypos += 1
else:
self.__values__[attrs].unpack(data, pos)
pos += len(self.__values__[attrs])
else:
values = struct.unpack(self.__endian__+sdef, data[pos:pos+size])
pos += size
j = 0
for name in attrs:
if name[0] == '*':
name = name[1:]
if self.__values__[name] == None:
self.__values__[name] = []
self.__values__[name].append(values[j])
else:
self.__values__[name] = values[j]
j += 1
return self
def pack(self):
arraypos, arrayname = None, None
ret = ''
for i in range(len(self.__defs__)):
sdef, size, attrs = self.__defs__[i], self.__sizes__[i], self.__attrs__[i]
if sdef == Struct.string:
size, offset, encoding, stripNulls, value = size
if isinstance(size, str):
size = self.__values__[size]+offset
if attrs[0] == '*':
if arrayname != attrs:
arraypos = 0
arrayname = attrs
temp = self.__values__[attrs[1:]][arraypos]
arraypos += 1
else:
temp = self.__values__[attrs]
if encoding != None:
temp = temp.encode(encoding)
temp = temp[:size]
ret += temp + ('\0' * (size - len(temp)))
elif sdef == Struct:
if attrs[0] == '*':
if arrayname != attrs:
arraypos = 0
arrayname = attrs
ret += self.__values__[attrs[1:]][arraypos].pack()
arraypos += 1
else:
ret += self.__values__[attrs].pack()
else:
values = []
for name in attrs:
if name[0] == '*':
if arrayname != name:
arraypos = 0
arrayname = name
values.append(self.__values__[name[1:]][arraypos])
arraypos += 1
else:
values.append(self.__values__[name])
ret += struct.pack(self.__endian__+sdef, *values)
return ret
def __getitem__(self, value):
return [('struct', self.__class__)] * value
class WiiObject(object):
def load(cls, data, *args, **kwargs):
self = cls()
self._load(data, *args, **kwargs)
return self
load = classmethod(load)
def loadFile(cls, filename, *args, **kwargs):
return cls.load(open(filename, "rb").read(), *args, **kwargs)
loadFile = classmethod(loadFile)
def dump(self, *args, **kwargs):
return self._dump(*args, **kwargs)
def dumpFile(self, filename, *args, **kwargs):
open(filename, "wb").write(self.dump(*args, **kwargs))
return filename
class WiiArchive(WiiObject):
def loadDir(cls, dirname):
self = cls()
self._loadDir(dirname)
return self
loadDir = classmethod(loadDir)
def dumpDir(self, dirname):
if(not os.path.isdir(dirname)):
os.mkdir(dirname)
self._dumpDir(dirname)
return dirname
class WiiHeader(object):
def __init__(self, data):
self.data = data
def addFile(self, filename):
open(filename, "wb").write(self.add())
def removeFile(self, filename):
open(filename, "wb").write(self.remove())
def loadFile(cls, filename, *args, **kwargs):
return cls(open(filename, "rb").read(), *args, **kwargs)
loadFile = classmethod(loadFile)
def align(x, boundary):
while x % boundary != 0:
x += 1
return x
def clamp(var, min, max):
if var < min: var = min
if var > max: var = max
return var
def abs(var):
if var < 0:
var = var + (2 * var)
return var
def hexdump(s, sep=" "): # just dumps hex values
return sep.join(map(lambda x: "%02x" % ord(x), s))
def hexdump2(src, length = 16): # dumps to a "hex editor" style output
result = []
for i in xrange(0, len(src), length):
s = src[i:i + length]
if(len(s) % 4 == 0):
mod = 0
else:
mod = 1
hexa = ''
for j in range((len(s) / 4) + mod):
hexa += ' '.join(["%02X" % ord(x) for x in s[j * 4:j * 4 + 4]])
if(j != ((len(s) / 4) + mod) - 1):
hexa += ' '
printable = s.translate(''.join([(len(repr(chr(x))) == 3) and chr(x) or '.' for x in range(256)]))
result.append("0x%04X %-*s %s\n" % (i, (length * 3) + 2, hexa, printable))
return ''.join(result)
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