def load(self):
_path = path.join(self.root_dir, 'database', 'master_card')
with open(_path, 'rb') as _f:
buf = Reader(_f)
count = buf.read_int() # 卡牌数量
offsets = [0] * count
self.cards = cards = [None] * count
for i in range(count):
cards[i] = MACard()
offsets[i] = buf.read_int()
for i, card in enumerate(cards):
buf.seek(offsets[i])
card.load(buf)
class ClassParser:
def __init__(self, file):
self.file = file
self.reader = Reader()
def parse_class(self):
clazz = JavaClass()
self.reader.load_class(self.file)
if self.reader.read_int() != 0xCAFEBABE:
raise Exception('Not a valid Java class file')
clazz.version['minor'] = self.reader.read_short()
clazz.version['major'] = self.reader.read_short()
pool = self.parse_constant_pool(clazz)
clazz.pool = pool
clazz.access_flags = pool.get_value(self.reader.read_short())
clazz.class_name = pool.get_value(self.reader.read_short())
clazz.superclass_name = pool.get_value(self.reader.read_short())
clazz.interfaces = self.parse_interface_table(clazz)
clazz.fields = self.parse_fields(clazz, pool)
clazz.methods = self.parse_methods(clazz, pool)
clazz.attributes = Attribute.parse_attributes(self.reader, pool)
return clazz
def parse_constant_pool(self, clazz):
pool = ConstantPool(self.reader.read_short())
pool.parse(self.reader)
return pool
def parse_interface_table(self, clazz):
size = self.reader.read_short()
for i in range(size):
self.reader.read_byte()
return None
def parse_fields(self, clazz, pool):
fields = []
for i in range(self.reader.read_short()):
field = Field()
field.parse(self.reader, pool)
fields.append(field)
return fields
def parse_methods(self, clazz, pool):
methods = []
for i in range(self.reader.read_short()):
m = Method()
m.parse(self.reader, pool)
methods.append(m)
return methods
