# This is a generated file! Please edit source .ksy file and use kaitai-struct-compiler to rebuild from pkg_resources import parse_version from .kaitaistruct import __version__ as ks_version, KaitaiStruct, KaitaiStream, BytesIO import collections if parse_version(ks_version) < parse_version('0.7'): raise Exception("Incompatible Kaitai Struct Python API: 0.7 or later is required, but you have %s" % (ks_version)) class Lzh(KaitaiStruct): """LHA (LHarc, LZH) is a file format used by a popular freeware eponymous archiver, created in 1988 by Haruyasu Yoshizaki. Over the years, many ports and implementations were developed, sporting many extensions to original 1988 LZH. File format is pretty simple and essentially consists of a stream of records. """ SEQ_FIELDS = ["entries"] def __init__(self, _io, _parent=None, _root=None): self._io = _io self._parent = _parent self._root = _root if _root else self self._debug = collections.defaultdict(dict) def _read(self): self._debug['entries']['start'] = self._io.pos() self.entries = [] i = 0 while not self._io.is_eof(): if not 'arr' in self._debug['entries']: self._debug['entries']['arr'] = [] self._debug['entries']['arr'].append({'start': self._io.pos()}) _t_entries = self._root.Record(self._io, self, self._root) _t_entries._read() self.entries.append(_t_entries) self._debug['entries']['arr'][len(self.entries) - 1]['end'] = self._io.pos() i += 1 self._debug['entries']['end'] = self._io.pos() class Record(KaitaiStruct): SEQ_FIELDS = ["header_len", "file_record"] def __init__(self, _io, _parent=None, _root=None): self._io = _io self._parent = _parent self._root = _root if _root else self self._debug = collections.defaultdict(dict) def _read(self): self._debug['header_len']['start'] = self._io.pos() self.header_len = self._io.read_u1() self._debug['header_len']['end'] = self._io.pos() if self.header_len > 0: self._debug['file_record']['start'] = self._io.pos() self.file_record = self._root.FileRecord(self._io, self, self._root) self.file_record._read() self._debug['file_record']['end'] = self._io.pos() class FileRecord(KaitaiStruct): SEQ_FIELDS = ["header", "file_uncompr_crc16", "body"] def __init__(self, _io, _parent=None, _root=None): self._io = _io self._parent = _parent self._root = _root if _root else self self._debug = collections.defaultdict(dict) def _read(self): self._debug['header']['start'] = self._io.pos() self._raw_header = self._io.read_bytes((self._parent.header_len - 1)) io = KaitaiStream(BytesIO(self._raw_header)) self.header = self._root.Header(io, self, self._root) self.header._read() self._debug['header']['end'] = self._io.pos() if self.header.header1.lha_level == 0: self._debug['file_uncompr_crc16']['start'] = self._io.pos() self.file_uncompr_crc16 = self._io.read_u2le() self._debug['file_uncompr_crc16']['end'] = self._io.pos() self._debug['body']['start'] = self._io.pos() self.body = self._io.read_bytes(self.header.header1.file_size_compr) self._debug['body']['end'] = self._io.pos() class Header(KaitaiStruct): SEQ_FIELDS = ["header1", "filename_len", "filename", "file_uncompr_crc16", "os", "ext_header_size"] def __init__(self, _io, _parent=None, _root=None): self._io = _io self._parent = _parent self._root = _root if _root else self self._debug = collections.defaultdict(dict) def _read(self): self._debug['header1']['start'] = self._io.pos() self.header1 = self._root.Header1(self._io, self, self._root) self.header1._read() self._debug['header1']['end'] = self._io.pos() if self.header1.lha_level == 0: self._debug['filename_len']['start'] = self._io.pos() self.filename_len = self._io.read_u1() self._debug['filename_len']['end'] = self._io.pos() if self.header1.lha_level == 0: self._debug['filename']['start'] = self._io.pos() self.filename = (self._io.read_bytes(self.filename_len)).decode(u"ASCII") self._debug['filename']['end'] = self._io.pos() if self.header1.lha_level == 2: self._debug['file_uncompr_crc16']['start'] = self._io.pos() self.file_uncompr_crc16 = self._io.read_u2le() self._debug['file_uncompr_crc16']['end'] = self._io.pos() if self.header1.lha_level == 2: self._debug['os']['start'] = self._io.pos() self.os = self._io.read_u1() self._debug['os']['end'] = self._io.pos() if self.header1.lha_level == 2: self._debug['ext_header_size']['start'] = self._io.pos() self.ext_header_size = self._io.read_u2le() self._debug['ext_header_size']['end'] = self._io.pos() class Header1(KaitaiStruct): SEQ_FIELDS = ["header_checksum", "method_id", "file_size_compr", "file_size_uncompr", "file_timestamp", "attr", "lha_level"] def __init__(self, _io, _parent=None, _root=None): self._io = _io self._parent = _parent self._root = _root if _root else self self._debug = collections.defaultdict(dict) def _read(self): self._debug['header_checksum']['start'] = self._io.pos() self.header_checksum = self._io.read_u1() self._debug['header_checksum']['end'] = self._io.pos() self._debug['method_id']['start'] = self._io.pos() self.method_id = (self._io.read_bytes(5)).decode(u"ASCII") self._debug['method_id']['end'] = self._io.pos() self._debug['file_size_compr']['start'] = self._io.pos() self.file_size_compr = self._io.read_u4le() self._debug['file_size_compr']['end'] = self._io.pos() self._debug['file_size_uncompr']['start'] = self._io.pos() self.file_size_uncompr = self._io.read_u4le() self._debug['file_size_uncompr']['end'] = self._io.pos() self._debug['file_timestamp']['start'] = self._io.pos() self.file_timestamp = self._io.read_u4le() self._debug['file_timestamp']['end'] = self._io.pos() self._debug['attr']['start'] = self._io.pos() self.attr = self._io.read_u1() self._debug['attr']['end'] = self._io.pos() self._debug['lha_level']['start'] = self._io.pos() self.lha_level = self._io.read_u1() self._debug['lha_level']['end'] = self._io.pos()