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uuid: Remove ulid helper funcs
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parent
c0aba5027c
commit
b656042ba7
45
uuid.lua
45
uuid.lua
@ -45,37 +45,26 @@ local function _now(time_func, ...)
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error("assertion failed: socket can't be found and no time function provided")
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end
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--generate the time part of an ulid
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local function _encode_time(time)
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time = math.floor((time or _now()) * 1000)
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local out = {}
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for i = 10, 1, -1 do
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local mod = time % #_encoding
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out[i] = _encoding[mod + 1]
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time = (time - mod) / #_encoding
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end
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return table.concat(out)
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end
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--generate the random part of an ulid
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local function _encode_random(rng)
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local out = {}
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for i = 1, 16 do
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out[i] = _encoding[math.floor(_random(rng) * #_encoding) + 1]
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end
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return table.concat(out)
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end
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--generate an ULID using this rng at this time
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--generate an ULID using this rng at this time (now by default)
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--see https://github.com/ulid/spec
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--implementation based on https://github.com/Tieske/ulid.lua
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function uuid.ulid(rng, time)
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return _encode_time(time) .. _encode_random(rng)
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time = math.floor((time or _now()) * 1000)
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local time_part = {}
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local random_part = {}
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for i = 10, 1, -1 do
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local mod = time % #_encoding
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time_part[i] = _encoding[mod + 1]
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time = (time - mod) / #_encoding
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end
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for i = 1, 16 do
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random_part[i] = _encoding[math.floor(_random(rng) * #_encoding) + 1]
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end
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return table.concat(time_part) .. table.concat(random_part)
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end
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return uuid
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