def iter_cells(self, stream):
stream.seek(self.hbin_data_offset)
offset = stream.tell()
while offset < self.hbin_data_offset + self.header.size - HBIN_HEADER.sizeof():
hbin_cell_size = Int32sl.parse_stream(stream)
# If the cell size is positive, it means it is unallocated. We are not interested in those on a regular run
if hbin_cell_size >= 0:
continue
bytes_to_read = (hbin_cell_size * -1) - 4
cell_type = Bytes(2).parse_stream(stream)
# Yield the cell
yield Cell(cell_type=cell_type.decode(), offset=stream.tell(), size=bytes_to_read)
# Go to the next cell
offset += stream.tell() + bytes_to_read
def __init__(self, stream):
"""
:param stream: a stream at the start of the hbin block
"""
self.header = HBIN_HEADER.parse_stream(stream)
self.hbin_data_offset = stream.tell()