从以前的ar.String_Hash()
变成了StringHash()
1.32又变成啥了? (预处理阶段的)
@actboy168

该不会要require 谁才能使用吧?

local A = 0
local B = 0
local C = 0
local switch = {
[11] = function (byte) C = C + (byte << 24) end,
[10] = function (byte) C = C + (byte << 16) end,
[ 9] = function (byte) C = C + (byte << 8) end,
[ 8] = function (byte) B = B + (byte << 24) end,
[ 7] = function (byte) B = B + (byte << 16) end,
[ 6] = function (byte) B = B + (byte << 8) end,
[ 5] = function (byte) B = B + (byte ) end,
[ 4] = function (byte) A = A + (byte << 24) end,
[ 3] = function (byte) A = A + (byte << 16) end,
[ 2] = function (byte) A = A + (byte << 8) end,
[ 1] = function (byte) A = A + (byte ) end,
}
local function uint32_t (int)
return 0xffffffff & int
end
function string.uint32_t (str)
return string.unpack('I',str)
end
local function encryption(A,B,C)
A = uint32_t(((C)>>13) ~ ((A)-(B)-(C)))
B = uint32_t(((A)<< 8) ~ ((B)-(C)-(A)))
C = uint32_t(((B)>>13) ~ ((C)-(A)-(B)))
A = uint32_t(((C)>>12) ~ ((A)-(B)-(C)))
B = uint32_t(((A)<<16) ~ ((B)-(C)-(A)))
C = uint32_t(((B)>> 5) ~ ((C)-(A)-(B)))
A = uint32_t(((C)>> 3) ~ ((A)-(B)-(C)))
B = uint32_t(((A)<<10) ~ ((B)-(C)-(A)))
C = uint32_t(((B)>>15) ~ ((C)-(A)-(B)))
return A,B,C
end
function StringHash (str)
str = str:sub(1,0x3ff):gsub('/','\\'):upper()
A = 0x9E3779B9
B = 0x9E3779B9
C = 0
local len = str:len()
local pos = 0
while (len >= 12) do
A = uint32_t(A + str:sub(pos + 1,pos + 4 ):uint32_t())
B = uint32_t(B + str:sub(pos + 5,pos + 8 ):uint32_t())
C = uint32_t(C + str:sub(pos + 9,pos + 12):uint32_t())
A,B,C = encryption(A,B,C)
pos = pos + 12
len = len - 12
end
C = C + str:len()
while (len > 0) do
switch[len](str:sub(pos + len,pos + len):byte())
len = len - 1
end
A,B,C = encryption(A,B,C)
return string.unpack('i',string.pack('I',C))
end
抄acb的c版的 lua5.3以上就可以跑了 因为5.3开始才加入位操作符
lua里的位操作符 基本跟c里没什么区别 只有 ^ 在lua里被重载成幂运算 而异或 用 ~ 表示 a~b 同时 ~也表示 非运算符

顶

模拟sh

lua有table还用hash干嘛

快餐预定。