\begin{code}
#if __GLASGOW_HASKELL__ < 303
-ioError = fail
mayBlock fo thing = thing
writeCharOffAddr :: Addr -> Int -> Char -> IO ()
(\ handle ->
do sz <- hFileSize handle
if sz > toInteger (maxBound::Int)
- then ioError (userError "slurpFile: file too big")
+ then IOERROR (userError "slurpFile: file too big")
else do
let sz_i = fromInteger sz
sz_i' = (sz_i * 12) `div` 10 -- add 20% for tabs
trySlurp :: Handle -> Int -> Addr -> IO (Addr, Int)
trySlurp handle sz_i chunk =
-#if __GLASGOW_HASKELL__ >= 303
+#if __GLASGOW_HASKELL__ == 303
+ wantReadableHandle "hGetChar" handle >>= \ handle_ ->
+ let fo = haFO__ handle_ in
+#elif __GLASGOW_HASKELL__ > 303
wantReadableHandle "hGetChar" handle $ \ handle_ ->
let fo = haFO__ handle_ in
#else
tAB_SIZE = 8#
- slurpFile :: Int# -> Int# -> Addr -> Int# -> Int# -> IO Int
+ slurpFile :: Int# -> Int# -> Addr -> Int# -> Int# -> IO (Addr, Int)
slurpFile c off chunk chunk_sz max_off = slurp c off
where
- slurp :: Int# -> Int# -> IO Int
+ slurp :: Int# -> Int# -> IO (Addr, Int)
slurp c off | off >=# max_off = do
let new_sz = chunk_sz *# 2#
chunk' <- reAllocMem chunk (I# new_sz)
- slurpFile c off chunk' new_sz (new_sz -# tAB_SIZE)
+ slurpFile c off chunk' new_sz (new_sz -# (tAB_SIZE +# 1#))
slurp c off = do
intc <- mayBlock fo (_ccall_ fileGetc fo)
if intc == ((-1)::Int)
then do errtype <- getErrType
if errtype == (ERR_EOF :: Int)
- then return (I# off)
+ then return (chunk, I# off)
else constructErrorAndFail "slurpFile"
else case chr intc of
'\t' -> tabIt c off
| otherwise = c +# 1#
slurp c' (off +# 1#)
- tabIt :: Int# -> Int# -> IO Int
+ tabIt :: Int# -> Int# -> IO (Addr, Int)
-- can't run out of buffer in here, because we reserved an
-- extra tAB_SIZE bytes at the end earlier.
tabIt c off = do
in do
-- allow space for a full tab at the end of the buffer
- -- (that's what the max_off thing is for)
- rc <- slurpFile 0# 0# chunk chunk_sz (chunk_sz -# tAB_SIZE)
+ -- (that's what the max_off thing is for),
+ -- and add 1 to allow room for the final sentinel \NUL at
+ -- the end of the file.
+ (chunk', rc) <- slurpFile 0# 0# chunk chunk_sz (chunk_sz -# (tAB_SIZE +# 1#))
+#if __GLASGOW_HASKELL__ < 404
writeHandle handle handle_
+#endif
if rc < (0::Int)
then constructErrorAndFail "slurpFile"
- else return (chunk, rc)
+ else return (chunk', rc+1 {-room for sentinel-})
reAllocMem :: Addr -> Int -> IO Addr
reAllocMem ptr sz = do
chunk <- _ccall_ realloc ptr sz
if chunk == nullAddr
-#if __GLASGOW_HASKELL__ < 303
- then fail (userError "reAllocMem")
-#else
+#if __GLASGOW_HASKELL__ >= 400
then fail "reAllocMem"
+#else
+ then fail (userError "reAllocMem")
#endif
else return chunk