Cosmetic changes suggested by hlint.

[Lucu.git] / Network / HTTP / Lucu / HttpVersion.hs

diff --git a/Network/HTTP/Lucu/HttpVersion.hs b/Network/HTTP/Lucu/HttpVersion.hs
index 38d0e5b81ad49767621098c06bb499f347bae175..9ad1c0a07ccd964d9cdcee554ff604a5c558856d 100644 (file)
--- a/Network/HTTP/Lucu/HttpVersion.hs
+++ b/Network/HTTP/Lucu/HttpVersion.hs
@@ -1,24 +1,27 @@
--- #prune
-
+{-# LANGUAGE
+    OverloadedStrings
+  , UnicodeSyntax
+  #-}
 -- |Manipulation of HTTP version string.
 module Network.HTTP.Lucu.HttpVersion
     ( HttpVersion(..)
     , httpVersionP
-    , hPutHttpVersion
+    , printHttpVersion
     )
     where
-
-import qualified Data.ByteString.Lazy.Char8 as B
-import           Data.ByteString.Lazy.Char8 (ByteString)
-import           Network.HTTP.Lucu.Parser
-import           System.IO
+import qualified Blaze.Text.Int as BT
+import Control.Applicative
+import Control.Applicative.Unicode
+import Data.Ascii (AsciiBuilder)
+import qualified Data.Ascii as A
+import Data.Attoparsec.Char8
+import Data.Monoid.Unicode
+import Prelude hiding (min)
 
 -- |@'HttpVersion' major minor@ represents \"HTTP\/major.minor\".
-data HttpVersion = HttpVersion Int Int
-                   deriving (Eq)
-
-instance Show HttpVersion where
-    show (HttpVersion maj min) = "HTTP/" ++ show maj ++ "." ++ show min
+data HttpVersion
+    = HttpVersion !Int !Int
+      deriving (Eq, Show)
 
 instance Ord HttpVersion where
     (HttpVersion majA minA) `compare` (HttpVersion majB minB)
@@ -28,18 +31,24 @@ instance Ord HttpVersion where
         | minA < minB = LT
         | otherwise   = EQ
 
-
-httpVersionP :: Parser HttpVersion
-httpVersionP = do string "HTTP/"
-                  major <- many1 digit
-                  char '.'
-                  minor <- many1 digit
-                  return $ HttpVersion (read major) (read minor)
-
-
-hPutHttpVersion :: Handle -> HttpVersion -> IO ()
-hPutHttpVersion h (HttpVersion maj min)
-    = do hPutStr  h "HTTP/"
-         hPutStr  h (show maj)
-         hPutChar h '.'
-         hPutStr  h (show min)
\ No newline at end of file
+httpVersionP ∷ Parser HttpVersion
+httpVersionP = string "HTTP/"
+               *>
+               choice [ string "1.1" *> pure (HttpVersion 1 1)
+                      , string "1.0" *> pure (HttpVersion 1 0)
+                      , HttpVersion <$> decimal ⊛ (char '.' *> decimal)
+                      ]
+
+-- |Convert an 'HttpVersion' to 'AsciiBuilder'.
+printHttpVersion ∷ HttpVersion → AsciiBuilder
+printHttpVersion v
+    = case v of
+        -- 頻出するので高速化
+        HttpVersion 1 0 → A.toAsciiBuilder "HTTP/1.0"
+        HttpVersion 1 1 → A.toAsciiBuilder "HTTP/1.1"
+        -- 一般の場合
+        HttpVersion maj min
+            → A.toAsciiBuilder    "HTTP/"           ⊕
+              A.unsafeFromBuilder (BT.integral maj) ⊕
+              A.toAsciiBuilder    "."               ⊕
+              A.unsafeFromBuilder (BT.integral min)