1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
|
# 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()
|
