Implemented fallback handler.

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

diff --git a/Network/HTTP/Lucu/HttpVersion.hs b/Network/HTTP/Lucu/HttpVersion.hs
index 9b955d37fd9644beb912feb1808a1f2982dd97b9..9bc1b819bc743033440c275d0cde40fa9b9e8bbb 100644 (file)
--- a/Network/HTTP/Lucu/HttpVersion.hs
+++ b/Network/HTTP/Lucu/HttpVersion.hs
@@ -1,16 +1,19 @@
+-- #prune
+
+-- |Manipulation of HTTP version string.
 module Network.HTTP.Lucu.HttpVersion
     ( HttpVersion(..)
-    , httpVersionP    -- Parser HttpVersion
-    , hPutHttpVersion -- Handle -> HttpVersion -> IO ()
+    , httpVersionP
+    , hPutHttpVersion
     )
     where
 
-import qualified Data.ByteString.Lazy.Char8 as B
-import           Data.ByteString.Lazy.Char8 (ByteString)
+import qualified Data.ByteString.Char8 as C8
 import           Network.HTTP.Lucu.Parser
 import           System.IO
 
-data HttpVersion = HttpVersion Int Int
+-- |@'HttpVersion' major minor@ represents \"HTTP\/major.minor\".
+data HttpVersion = HttpVersion !Int !Int
                    deriving (Eq)
 
 instance Show HttpVersion where
@@ -30,12 +33,17 @@ httpVersionP = do string "HTTP/"
                   major <- many1 digit
                   char '.'
                   minor <- many1 digit
-                  return $ HttpVersion (read major) (read minor)
+                  return $ HttpVersion (read' major) (read' minor)
+    where
+      read' "1" = 1 -- この二つが
+      read' "0" = 0 -- 壓倒的に頻出する
+      read' s   = read s
 
 
 hPutHttpVersion :: Handle -> HttpVersion -> IO ()
 hPutHttpVersion h (HttpVersion maj min)
-    = do hPutStr  h "HTTP/"
+    = h `seq`
+      do C8.hPut  h (C8.pack "HTTP/")
          hPutStr  h (show maj)
          hPutChar h '.'
          hPutStr  h (show min)
\ No newline at end of file