, joinWith
, quoteStr
, parseWWWFormURLEncoded
+ , show3
)
where
+import Blaze.ByteString.Builder.ByteString as B
+import Blaze.Text.Int as BT
import Control.Monad
import Data.Ascii (Ascii, AsciiBuilder)
import qualified Data.Ascii as A
+import Data.ByteString (ByteString)
import qualified Data.ByteString.Char8 as BS
import Data.List hiding (last)
import Data.Monoid.Unicode
-- |> parseWWWFormURLEncoded "aaa=bbb&ccc=ddd"
-- > ==> [("aaa", "bbb"), ("ccc", "ddd")]
-parseWWWFormURLEncoded ∷ String → [(String, String)]
+parseWWWFormURLEncoded ∷ Ascii → [(ByteString, ByteString)]
parseWWWFormURLEncoded src
- | null src = []
- | otherwise = do pairStr ← splitBy (\ c → c ≡ ';' ∨ c ≡ '&') src
+ -- THINKME: We could gain some performance by using attoparsec
+ -- here.
+ | src ≡ "" = []
+ | otherwise = do pairStr ← splitBy (\ c → c ≡ ';' ∨ c ≡ '&') (A.toString src)
let (key, value) = break (≡ '=') pairStr
return ( unescape key
, unescape $ case value of
val → val
)
where
- unescape ∷ String → String
- unescape = unEscapeString ∘ map plusToSpace
+ unescape ∷ String → ByteString
+ unescape = BS.pack ∘ unEscapeString ∘ map plusToSpace
plusToSpace ∷ Char → Char
plusToSpace '+' = ' '
plusToSpace c = c
+
+-- |> show3 5
+-- > ==> "005"
+show3 ∷ Integral n ⇒ n → AsciiBuilder
+{-# INLINEABLE show3 #-}
+show3 = A.unsafeFromBuilder ∘ go
+ where
+ go i | i ≥ 0 ∧ i < 10 = B.fromByteString "00" ⊕ BT.digit i
+ | i ≥ 0 ∧ i < 100 = B.fromByteString "0" ⊕ BT.integral i
+ | i ≥ 0 ∧ i < 1000 = BT.integral i
+ | otherwise = error ("show3: the integer i must satisfy 0 <= i < 1000: " ⧺ show i)