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// Archive/GZip/Header.h
#ifndef __ARCHIVE_GZIP_HEADER_H
#define __ARCHIVE_GZIP_HEADER_H
#include "Common/Types.h"
namespace NArchive {
namespace NGZip {
extern UInt16 kSignature;
static const UInt32 kSignatureSize = 2;
namespace NFileHeader
{
/*
struct CBlock
{
UInt16 Id;
Byte CompressionMethod;
Byte Flags;
UInt32 Time;
Byte ExtraFlags;
Byte HostOS;
};
*/
namespace NFlags
{
const int kDataIsText = 1 << 0;
const int kHeaderCRCIsPresent = 1 << 1;
const int kExtraIsPresent = 1 << 2;
const int kNameIsPresent = 1 << 3;
const int kComentIsPresent = 1 << 4;
}
namespace NExtraFlags
{
enum EEnum
{
kMaximum = 2,
kFastest = 4
};
}
namespace NCompressionMethod
{
const Byte kDeflate = 8;
}
namespace NHostOS
{
enum EEnum
{
kFAT = 0, // filesystem used by MS-DOS, OS/2, Win32
// pkzip 2.50 (FAT / VFAT / FAT32 file systems)
kAMIGA = 1,
kVMS = 2, // VAX/VMS
kUnix = 3,
kVM_CMS = 4,
kAtari = 5, // what if it's a minix filesystem? [cjh]
kHPFS = 6, // filesystem used by OS/2 (and NT 3.x)
kMac = 7,
kZ_System = 8,
kCPM = 9,
kTOPS20 = 10, // pkzip 2.50 NTFS
kNTFS = 11, // filesystem used by Windows NT
kQDOS = 12, // SMS/QDOS
kAcorn = 13, // Archimedes Acorn RISC OS
kVFAT = 14, // filesystem used by Windows 95, NT
kMVS = 15,
kBeOS = 16, // hybrid POSIX/database filesystem
// BeBOX or PowerMac
kTandem = 17,
kTHEOS = 18,
kUnknown = 255
};
const int kNumHostSystems = 19;
}
}
}}
#endif
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