def __init__(self, filename):
self.reader = GWCReader(filename)
self.cartridge_data = {}
self.output = "."
def __init__(self, filename):
self.reader = GWCReader(filename)
self.cartridge_data = {}
self.output = "."
class GWCDecompiler:
def __init__(self, filename):
self.reader = GWCReader(filename)
self.cartridge_data = {}
self.output = "."
def decompile(self):
self.read_file_header()
self.read_cartridge_objects()
self.read_cartridge_header()
def set_output(self, output):
self.output = output
def read_file_header(self):
# Read signature value and identifier
if self.reader.read('short') != int('0a02', 16) or \
self.reader.read('string') != 'CART':
raise GWCCorruptedFile
def read_cartridge_objects(self):
nb_objects = self.reader.read('ushort')
objects = []
for i in range(nb_objects):
obj_id = self.reader.read('ushort')
obj_addr = self.reader.read('int')
objects.append((obj_id, obj_addr))
self.cartridge_data['objects'] = objects
def read_cartridge_header(self):
header = {}
# Read length
header['length'] = self.reader.read('int')
# Cartridge location data
header['latitude'] = self.reader.read('double')
header['longitude'] = self.reader.read('double')
header['altitude'] = self.reader.read('double')
# Date of creation
header['date'] = self.reader.read('long')
# Media ID
header['id_splash'] = self.reader.read('short')
header['id_icon'] = self.reader.read('short')
# Cartridge data
header['type'] = self.reader.read('string')
header['player'] = self.reader.read('string')
header['player_id'] = self.reader.read('long')
header['cartridge_name'] = self.reader.read('string')
header['cartridge_guid'] = self.reader.read('string')
header['cartridge_desc'] = self.reader.read('string')
header['starting_location_description'] = self.reader.read('string')
header['version'] = self.reader.read('string')
header['author'] = self.reader.read('string')
header['company'] = self.reader.read('string')
header['recommanded_device'] = self.reader.read('string')
# Completion code
header['completion_length'] = self.reader.read('int')
header['completion_code'] = self.reader.read('string')
self.cartridge_data['header'] = header
def write_lua_bytecode(self, filename='cartridge.luac'):
# Go to the correct position
self.reader.seek(self.cartridge_data['objects'][0][1])
# Read and write the lua bytecode
lua_length = self.reader.read('int')
filepath = os.path.join(self.output, filename)
with open(filepath, 'wb') as f:
f.write(self.reader.read_raw(lua_length))
return filename
def write_media_files(self):
medias = []
for obj_id, obj_addr in self.cartridge_data['objects'][1:]:
# Go to the correct position
self.reader.seek(obj_addr)
# Read valid object byte
valid = self.reader.read('byte')
if valid != 0:
object_type = self.reader.read('int')
object_length = self.reader.read('int')
if object_type in object_types:
object_path = os.path.join(self.output, "media_%s.%s" % (obj_id, object_types[object_type]))
with open(object_path, 'wb') as f:
f.write(self.reader.read_raw(object_length))
medias.append(object_path)
return medias
class GWCDecompiler:
def __init__(self, filename):
self.reader = GWCReader(filename)
self.cartridge_data = {}
self.output = "."
def decompile(self):
self.read_file_header()
self.read_cartridge_objects()
self.read_cartridge_header()
def set_output(self, output):
self.output = output
def read_file_header(self):
# Read signature value and identifier
if self.reader.read('short') != int('0a02', 16) or \
self.reader.read('string') != 'CART':
raise GWCCorruptedFile
def read_cartridge_objects(self):
nb_objects = self.reader.read('ushort')
objects = []
for i in range(nb_objects):
obj_id = self.reader.read('ushort')
obj_addr = self.reader.read('int')
objects.append((obj_id, obj_addr))
self.cartridge_data['objects'] = objects
def read_cartridge_header(self):
header = {}
# Read length
header['length'] = self.reader.read('int')
# Cartridge location data
header['latitude'] = self.reader.read('double')
header['longitude'] = self.reader.read('double')
header['altitude'] = self.reader.read('double')
# Date of creation
header['date'] = self.reader.read('long')
# Media ID
header['id_splash'] = self.reader.read('short')
header['id_icon'] = self.reader.read('short')
# Cartridge data
header['type'] = self.reader.read('string')
header['player'] = self.reader.read('string')
header['player_id'] = self.reader.read('long')
header['cartridge_name'] = self.reader.read('string')
header['cartridge_guid'] = self.reader.read('string')
header['cartridge_desc'] = self.reader.read('string')
header['starting_location_description'] = self.reader.read('string')
header['version'] = self.reader.read('string')
header['author'] = self.reader.read('string')
header['company'] = self.reader.read('string')
header['recommanded_device'] = self.reader.read('string')
# Completion code
header['completion_length'] = self.reader.read('int')
header['completion_code'] = self.reader.read('string')
self.cartridge_data['header'] = header
def write_lua_bytecode(self, filename='cartridge.luac'):
# Go to the correct position
self.reader.seek(self.cartridge_data['objects'][0][1])
# Read and write the lua bytecode
lua_length = self.reader.read('int')
filepath = os.path.join(self.output, filename)
with open(filepath, 'wb') as f:
f.write(self.reader.read_raw(lua_length))
return filename
def write_media_files(self):
medias = []
for obj_id, obj_addr in self.cartridge_data['objects'][1:]:
# Go to the correct position
self.reader.seek(obj_addr)
# Read valid object byte
valid = self.reader.read('byte')
if valid != 0:
object_type = self.reader.read('int')
object_length = self.reader.read('int')
if object_type in object_types:
object_path = os.path.join(
self.output,
"media_%s.%s" % (obj_id, object_types[object_type]))
with open(object_path, 'wb') as f:
f.write(self.reader.read_raw(object_length))
medias.append(object_path)
return medias