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-- ----------------------------------------------------------------------------
--
-- (c) The University of Glasgow 2006
--
-- Fingerprints for recompilation checking and ABI versioning.
--
-- http://hackage.haskell.org/trac/ghc/wiki/Commentary/Compiler/RecompilationAvoidance
--
-- ----------------------------------------------------------------------------
module Fingerprint (
Fingerprint(..), fingerprint0,
readHexFingerprint,
fingerprintData,
fingerprintString
) where
#include "md5.h"
##include "HsVersions.h"
import Numeric ( readHex )
import GHC.Fingerprint
-- useful for parsing the output of 'md5sum', should we want to do that.
readHexFingerprint :: String -> Fingerprint
readHexFingerprint s = Fingerprint w1 w2
where (s1,s2) = splitAt 16 s
[(w1,"")] = readHex s1
[(w2,"")] = readHex (take 16 s2)
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