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)
in do
-- allow space for a full tab at the end of the buffer
- -- (that's what the max_off thing is for)
- (chunk', 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#))
writeHandle handle handle_
if rc < (0::Int)
then constructErrorAndFail "slurpFile"
- else return (chunk', rc)
+ else return (chunk', rc+1 {-room for sentinel-})
reAllocMem :: Addr -> Int -> IO Addr