A very intersting code

[Dracula Wang]

when i look into 7z's code, find this:

namespace NSignature
{
UInt32 kLocalFileHeader = 0x04034B50 + 1;
UInt32 kDataDescriptor = 0x08074B50 + 1;
UInt32 kCentralFileHeader = 0x02014B50 + 1;
UInt32 kEndOfCentralDir = 0x06054B50 + 1;
UInt32 kZip64EndOfCentralDir = 0x06064B50 + 1;
UInt32 kZip64EndOfCentralDirLocator = 0x07064B50 + 1;

class CMarkersInitializer
{
public:
CMarkersInitializer()
{
kLocalFileHeader--;
kDataDescriptor--;
kCentralFileHeader--;
kEndOfCentralDir--;
kZip64EndOfCentralDir--;
kZip64EndOfCentralDirLocator--;
}
};
static CMarkersInitializer g_MarkerInitializer;
}

i really wonder why they did this? do any body have read this code? Thanks

[Dracula Wang]

0x04034B50; 0x08074B50; 0x02014B50; 0x06054B50; 0x06064B50; 0x07064B50; those code are const, why add 1 and then sub 1?

[KarstenK]

I guess for getting the number in the first instance. A second gets it lowered by 1.:~

Greetings from Germany