From 7752cacd83c4e392951258bdc8b776d3ed87cf19 Mon Sep 17 00:00:00 2001 From: technorama Date: Thu, 29 Jan 2009 03:20:35 +0000 Subject: * lib/securerandom.rb: new method SecureRandom#uuid git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/branches/ruby_1_8@21869 b2dd03c8-39d4-4d8f-98ff-823fe69b080e --- ChangeLog | 4 ++++ lib/securerandom.rb | 10 ++++++++++ 2 files changed, 14 insertions(+) diff --git a/ChangeLog b/ChangeLog index d137172e5d..84cf2e612f 100644 --- a/ChangeLog +++ b/ChangeLog @@ -1,3 +1,7 @@ +Thu Jan 29 12:18:54 2009 Technorama Ltd. + + * lib/securerandom.rb: new method SecureRandom#uuid + Wed Jan 28 01:16:50 2009 Masatoshi SEKI * lib/erb.rb (def_erb_method): pass the trim_mode [Feature #1032] diff --git a/lib/securerandom.rb b/lib/securerandom.rb index 3fd63e535f..ee9be9bde4 100644 --- a/lib/securerandom.rb +++ b/lib/securerandom.rb @@ -134,4 +134,14 @@ module SecureRandom Math.ldexp(i64 >> (64-Float::MANT_DIG), -Float::MANT_DIG) end end + + # SecureRandom.uuid generates a v4 random UUID. + def self.uuid + str = self.random_bytes(16) + str[6] = (str[6] & 0x0f) | 0x40 + str[8] = (str[8] & 0x3f) | 0x80 + + ary = str.unpack("NnnnnN") + "%08x-%04x-%04x-%04x-%04x%08x" % ary + end end -- cgit v1.2.3