Die Dokumentation für dieses Modul kann unter Modul:TwitterSnowflake/doc erstellt werden
local p = {};
p.snowflakeToDate = function (id_str, format, epoch)
format = format or "!%c"
epoch = epoch or 1288834974
if type(id_str) ~= "string" then error("bad argument #1 (expected string, got " .. type(id_str) .. ")", 2) end
if type(format) ~= "string" then error("bad argument #2 (expected string, got " .. type(format) .. ")", 2) end
if type(epoch) ~= "number" then error("bad argument #3 (expected number, got " .. type(epoch) .. ")", 2) end
local hi, lo = 0, 0
local hiexp = 1
for c in id_str:gmatch "." do
lo = lo * 10 + tostring(c)
if lo >= 2^32 then
hi, lo = hi * 10^hiexp + math.floor(lo / 2^32), lo % 2^32
hiexp = 1
else hiexp = hiexp + 1 end
end
local timestamp = math.floor((hi * 1024 + math.floor(lo / 4194304)) / 1000) + epoch
return os.date(format, timestamp)
end