Software /
code /
prosody
Diff
util/uuid.lua @ 1302:4561c6d95339
util.uuid: More uniqueness!
author | Waqas Hussain <waqas20@gmail.com> |
---|---|
date | Thu, 04 Jun 2009 17:41:55 +0500 |
parent | 896:2c0b9e3c11c3 |
child | 1303:2170e2c0d57a |
line wrap: on
line diff
--- a/util/uuid.lua Thu Jun 04 05:54:32 2009 +0500 +++ b/util/uuid.lua Thu Jun 04 17:41:55 2009 +0500 @@ -7,13 +7,28 @@ -- - local m_random = math.random; local tostring = tostring; +local os_time = os.time; +local os_clock = os.clock; +local sha1 = require "util.hashes".sha1; + module "uuid" -function generate() - return tostring(m_random(0, 99999999)); +local last_uniq_time = 0; +local function uniq_time() + local new_uniq_time = os_time(); + if last_uniq_time >= new_uniq_time then new_uniq_time = last_uniq_time + 1; end + last_uniq_time = new_uniq_time; + return new_uniq_time; end -return _M; \ No newline at end of file +local function new_random(x) + return sha1(x..os_clock()..tostring({}), true); +end + +function generate() + return new_random(uniq_time()); +end + +return _M;