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comparison util/uuid.lua @ 7063:bc1b375f379e

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Merge 0.10->trunk
author Kim Alvefur <zash@zash.se>
date Fri, 08 Jan 2016 16:21:05 +0100
parents eda0feeaf759
children ec17115e3721
comparison
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7048:b58fd349ddfe 7063:bc1b375f379e
14 local function get_nibbles(n) 14 local function get_nibbles(n)
15 return hex(random_bytes(m_ceil(n/2))):sub(1, n); 15 return hex(random_bytes(m_ceil(n/2))):sub(1, n);
16 end 16 end
17 17
18 local function get_twobits() 18 local function get_twobits()
19 return ("%x"):format(get_nibbles(1):byte() % 4 + 8); 19 return ("%x"):format(random_bytes(1):byte() % 4 + 8);
20 end 20 end
21 21
22 local function generate() 22 local function generate()
23 -- generate RFC 4122 complaint UUIDs (version 4 - random) 23 -- generate RFC 4122 complaint UUIDs (version 4 - random)
24 return get_nibbles(8).."-"..get_nibbles(4).."-4"..get_nibbles(3).."-"..(get_twobits())..get_nibbles(3).."-"..get_nibbles(12); 24 return get_nibbles(8).."-"..get_nibbles(4).."-4"..get_nibbles(3).."-"..(get_twobits())..get_nibbles(3).."-"..get_nibbles(12);