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|
module Library.Parse (
getLines,
stripReturn,
removeEscChars,
removeQuotes,
separateBy,
isComment,
isNumber,
isName,
output,
fst3,
snd3,
thd3
) where
import Control.Monad( liftM )
import qualified Data.Char as Char
getLines :: FilePath -> IO [String]
getLines = liftM lines . readFile
stripReturn :: String -> String
stripReturn s = if (last s == '\r') then init s else s
removeEscChars :: String -> String
removeEscChars [] = []
removeEscChars (x:[]) = [x]
removeEscChars x = if (head x == '\\')
then (x!!1) : (removeEscChars . (drop 2) $ x)
else (head x) : (removeEscChars . tail $ x)
removeQuotes :: String -> String
removeQuotes = init . tail
separateBy :: Char -> String -> [String]
separateBy char list =
let f x = if (x == char) then ' ' else x
in words . (map f) $ list
isComment :: String -> Bool
isComment = (==) '#' . head
isNumber :: String -> Bool
isNumber ('0':[]) = True
isNumber ('-':ns)
| (ns /= [] && head ns /= '0') = isNumber ns
isNumber n = all (Char.isNumber) n
isName :: String -> Bool
isName s = all ((==) '"') [head s, last s]
output :: [String] -> IO ()
output [] = return ()
output list = do
putStrLn (head list)
output (tail list)
fst3 :: (a,b,c) -> a
fst3 (a,_,_) = a
snd3 :: (a,b,c) -> b
snd3 (_,b,_) = b
thd3 :: (a,b,c) -> c
thd3 (_,_,c) = c
|
