Created
June 10, 2015 11:35
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-- ./bytestring bart.txt bort.txt | |
import System.Environment | |
import System.Directory | |
import System.IO | |
import Control.Exception | |
import qualified Data.ByteString.Lazy as B | |
main = do | |
(fileName1:fileName2:_) <- getArgs | |
copy fileName1 fileName2 | |
copy source dest = do | |
contents <- B.readFile source | |
bracketOnError | |
(openTempFile "." "temp") | |
(\(tempName, tempHandle) -> do | |
hClose tempHandle | |
removeFile tempName) | |
(\(tempName, tempHandle) -> do | |
B.hPutStr tempHandle contents | |
hClose tempHandle | |
renameFile tempName dest) |
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