local ____exports = {}
local CRC32 = {
    0,
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    3993919788,
    2567524794,
    124634137,
    1886057615,
    3915621685,
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    755167117
}
--- From: https://github.com/lancelijade/qqwry.lua/blob/master/crc32.lua
function ____exports.crc32(self, str)
    local count = #str
    local crc = 4294967295
    local i = 1
    while count > 0 do
        local byte = string.byte(str, i)
        local left = crc >> 8
        local crcIndex = (crc & 255 ~ byte) + 1
        local right = CRC32[crcIndex + 1] or 0
        crc = left ~ right
        i = i + 1
        count = count - 1
    end
    crc = crc ~ 4294967295
    return crc
end
return ____exports