+manyChar :: Parser Char -> Parser Lazy.ByteString
+manyChar !p = Parser $!
+ do state <- get
+ case scan' state 0 of
+ Success len
+ -> do let (bs, rest) = B.splitAt len (pstInput state)
+ state' = state { pstInput = rest }
+ put state'
+ return $ Success bs
+ ReachedEOF
+ -> if pstIsEOFFatal state then
+ return ReachedEOF
+ else
+ error "internal error"
+ _ -> error "internal error"
+ where
+ scan' :: ParserState -> Int64 -> ParserResult Int64
+ scan' !st !soFar
+ = case runState (runParser p) st of
+ (Success _ , st') -> scan' st' (soFar + 1)
+ (IllegalInput, _ ) -> Success soFar
+ (ReachedEOF , _ ) -> if pstIsEOFFatal st then
+ ReachedEOF
+ else
+ Success soFar
+