diff options
| author | Sean Whitton <spwhitton@spwhitton.name> | 2018-04-24 10:49:04 -0700 |
|---|---|---|
| committer | Sean Whitton <spwhitton@spwhitton.name> | 2018-04-24 10:49:04 -0700 |
| commit | a080dde1efb823e6e25e6ba0ead2afeb76012e43 (patch) | |
| tree | 6165e39a24544d1387a201790541147e0f7478ab /src/Text/Pandoc/UUID.hs | |
| parent | a9ae23fa15d769ab9b05f483c8511e96cc684403 (diff) | |
| parent | de5ee82ed0e287ada3a5b272d8365a04fe8e9f95 (diff) | |
Merge tag 'upstream/2.1.2_dfsg'
Upstream version 2.1.2~dfsg
# gpg: Signature made Tue 24 Apr 2018 10:48:48 AM MST
# gpg: using RSA key 9B917007AE030E36E4FC248B695B7AE4BF066240
# gpg: issuer "spwhitton@spwhitton.name"
# gpg: Good signature from "Sean Whitton <spwhitton@spwhitton.name>" [ultimate]
# Primary key fingerprint: 8DC2 487E 51AB DD90 B5C4 753F 0F56 D055 3B6D 411B
# Subkey fingerprint: 9B91 7007 AE03 0E36 E4FC 248B 695B 7AE4 BF06 6240
Diffstat (limited to 'src/Text/Pandoc/UUID.hs')
| -rw-r--r-- | src/Text/Pandoc/UUID.hs | 30 |
1 files changed, 15 insertions, 15 deletions
diff --git a/src/Text/Pandoc/UUID.hs b/src/Text/Pandoc/UUID.hs index 5d05fa303..4d99324db 100644 --- a/src/Text/Pandoc/UUID.hs +++ b/src/Text/Pandoc/UUID.hs @@ -1,5 +1,5 @@ {- -Copyright (C) 2010-2016 John MacFarlane <jgm@berkeley.edu> +Copyright (C) 2010-2018 John MacFarlane <jgm@berkeley.edu> This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by @@ -18,7 +18,7 @@ Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA {- | Module : Text.Pandoc.UUID - Copyright : Copyright (C) 2010-2016 John MacFarlane + Copyright : Copyright (C) 2010-2018 John MacFarlane License : GNU GPL, version 2 or above Maintainer : John MacFarlane <jgm@berkeley.edu> @@ -29,13 +29,12 @@ UUID generation using Version 4 (random method) described in RFC4122. See http://tools.ietf.org/html/rfc4122 -} -module Text.Pandoc.UUID ( UUID, getRandomUUID ) where +module Text.Pandoc.UUID ( UUID(..), getRandomUUID, getUUID ) where -import Text.Printf ( printf ) -import System.Random ( randomIO ) +import Data.Bits (clearBit, setBit) import Data.Word -import Data.Bits ( setBit, clearBit ) -import Control.Monad ( liftM ) +import System.Random (RandomGen, getStdGen, randoms) +import Text.Printf (printf) data UUID = UUID Word8 Word8 Word8 Word8 Word8 Word8 Word8 Word8 Word8 Word8 Word8 Word8 Word8 Word8 Word8 Word8 @@ -64,14 +63,15 @@ instance Show UUID where printf "%02x" o ++ printf "%02x" p -getRandomUUID :: IO UUID -getRandomUUID = do - let getRN :: a -> IO Word8 - getRN _ = liftM fromIntegral (randomIO :: IO Int) - [a,b,c,d,e,f,g,h,i,j,k,l,m,n,o,p] <- mapM getRN ([1..16] :: [Int]) +getUUID :: RandomGen g => g -> UUID +getUUID gen = + let [a,b,c,d,e,f,g,h,i,j,k,l,m,n,o,p] = take 16 $ randoms gen :: [Word8] -- set variant - let i' = i `setBit` 7 `clearBit` 6 + i' = i `setBit` 7 `clearBit` 6 -- set version (0100 for random) - let g' = g `clearBit` 7 `setBit` 6 `clearBit` 5 `clearBit` 4 - return $ UUID a b c d e f g' h i' j k l m n o p + g' = g `clearBit` 7 `setBit` 6 `clearBit` 5 `clearBit` 4 + in + UUID a b c d e f g' h i' j k l m n o p +getRandomUUID :: IO UUID +getRandomUUID = getUUID <$> getStdGen |