blob: 2eac96bf48e3c2a83b797350f8e3dc0c4836c962 (
plain)
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
|
// Archive/Cab/Header.h
#ifndef __ARCHIVE_CAB_HEADER_H
#define __ARCHIVE_CAB_HEADER_H
#include "Common/Types.h"
namespace NArchive {
namespace NCab {
namespace NHeader{
namespace NArchive {
extern UInt32 kSignature;
namespace NFlags
{
const int kPrevCabinet = 0x0001;
const int kNextCabinet = 0x0002;
const int kReservePresent = 0x0004;
}
const UInt32 kArchiveHeaderSize = 36;
/*
struct CBlock
{
UInt32 Signature; // cabinet file signature
UInt32 Reserved1; // reserved
UInt32 Size; // size of this cabinet file in bytes
UInt32 Reserved2; // reserved
UInt32 FileOffset; // offset of the first CFFILE entry
UInt32 Reserved3; // reserved
Byte VersionMinor; // cabinet file format version, minor
Byte VersionMajor; // cabinet file format version, major
UInt16 NumFolders; // number of CFFOLDER entries in this cabinet
UInt16 NumFiles; // number of CFFILE entries in this cabinet
UInt16 Flags; // cabinet file option indicators
UInt16 SetID; // must be the same for all cabinets in a set
UInt16 CabinetNumber; // number of this cabinet file in a set
};
*/
const UInt32 kPerDataSizesHeaderSize = 4;
struct CPerDataSizes
{
UInt16 PerCabinetAreaSize; // (optional) size of per-cabinet reserved area
Byte PerFolderAreaSize; // (optional) size of per-folder reserved area
Byte PerDatablockAreaSize; // (optional) size of per-datablock reserved area
};
/*
Byte abReserve[]; // (optional) per-cabinet reserved area
Byte szCabinetPrev[]; // (optional) name of previous cabinet file
Byte szDiskPrev[]; // (optional) name of previous disk
Byte szCabinetNext[]; // (optional) name of next cabinet file
Byte szDiskNext[]; // (optional) name of next disk
*/
}
namespace NCompressionMethodMajor
{
const Byte kNone = 0;
const Byte kMSZip = 1;
const Byte kQuantum = 2;
const Byte kLZX = 3;
}
const UInt32 kFolderHeaderSize = 8;
struct CFolder
{
UInt32 DataStart; // offset of the first CFDATA block in this folder
UInt16 NumDataBlocks; // number of CFDATA blocks in this folder
Byte CompressionTypeMajor;
Byte CompressionTypeMinor;
// Byte abReserve[]; // (optional) per-folder reserved area
Byte GetCompressionMethod() const { return CompressionTypeMajor & 0xF; }
};
const int kFileNameIsUTFAttributeMask = 0x80;
namespace NFolderIndex
{
const int kContinuedFromPrev = 0xFFFD;
const int kContinuedToNext = 0xFFFE;
const int kContinuedPrevAndNext = 0xFFFF;
inline UInt16 GetRealFolderIndex(UInt16 aNumFolders, UInt16 aFolderIndex)
{
switch(aFolderIndex)
{
case kContinuedFromPrev:
return 0;
case kContinuedToNext:
case kContinuedPrevAndNext:
return aNumFolders - 1;
default:
return aFolderIndex;
}
}
}
const UInt32 kFileHeaderSize = 16;
/*
struct CFile
{
UInt32 UnPackSize; // uncompressed size of this file in bytes
UInt32 UnPackOffset; // uncompressed offset of this file in the folder
UInt16 FolderIndex; // index into the CFFOLDER area
UInt16 PureDate;
UInt16 PureTime; // Time
UInt16 Attributes; // attribute flags for this file
Byte szName[]; // name of this file
};
*/
}}}
#endif
|
