def __init__(self, reader: MemoryViewReader):
self.minor_version = reader.read_u16()
self.major_version = reader.read_u16()
self.constant_pool = ASConstantPool(reader)
self.methods = read_array(reader, ASMethod)
self.metadata = read_array(reader, ASMetadata)
class_count = reader.read_int()
self.instances = read_array(reader, ASInstance, class_count)
self.classes = read_array(reader, ASClass, class_count)
self.scripts = read_array(reader, ASScript)
self.method_bodies = read_array(reader, ASMethodBody)
def parse_swf(input_: Union[memoryview, bytes]) -> Iterable[Tag]:
"""
Parse SWF file and get an iterable of its tags.
"""
reader = MemoryViewReader(input_)
signature = Signature(reader.read_u8())
assert reader.read_u16() == 0x5357
reader.skip(1) # version
reader.skip(4) # file length
reader = decompress(reader, signature)
reader.skip_rect()
reader.skip(4) # frame rate and frame count
return read_tags(reader)
def read_tags(reader: MemoryViewReader) -> Iterable[Tag]:
"""
Read tags from the stream and get an iterable of tags.
"""
while not reader.is_eof():
code_length = reader.read_u16()
length = code_length & 0b111111
if length == 0x3F:
# Long tag header.
length = reader.read_u32()
try:
type_ = TagType(code_length >> 6)
except ValueError:
# Unknown tag type. Skip the tag.
reader.skip(length)
else:
yield Tag(type_=type_, raw=reader.read(length))