X-Git-Url: http://git.cielonegro.org/gitweb.cgi?p=Lucu.git;a=blobdiff_plain;f=Network%2FHTTP%2FLucu%2FHeaders.hs;h=2ee9cbb8ce60e39311b496aa2b8ebfe7666e9cbc;hp=400e49b1291d284bd43a0def5f9aff5f2e5955a1;hb=19763f7de78daf2d4c794f4010039f70c7f73994;hpb=b923d454928e3d01134b15d6072b6d3edf7a15ca

diff --git a/Network/HTTP/Lucu/Headers.hs b/Network/HTTP/Lucu/Headers.hs
index 400e49b..2ee9cbb 100644
--- a/Network/HTTP/Lucu/Headers.hs
+++ b/Network/HTTP/Lucu/Headers.hs
@@ -1,92 +1,154 @@
 {-# LANGUAGE
-    BangPatterns
+    FlexibleInstances
   , GeneralizedNewtypeDeriving
+  , MultiParamTypeClasses
+  , TypeSynonymInstances
   , OverloadedStrings
   , UnicodeSyntax
   #-}
+-- |An internal module for HTTP headers.
 module Network.HTTP.Lucu.Headers
     ( Headers
     , HasHeaders(..)
 
-    , toHeaders
-    , fromHeaders
-
-    , headersP
-    , hPutHeaders
+    , headers
+    , printHeaders
     )
     where
-import Control.Applicative
-import Data.Ascii (Ascii, CIAscii)
+import Control.Applicative hiding (empty)
+import Control.Applicative.Unicode hiding ((∅))
+import Control.Arrow
+import Control.Monad
+import Data.Ascii (Ascii, AsciiBuilder, CIAscii)
 import qualified Data.Ascii as A
 import Data.Attoparsec.Char8 as P
-import qualified Data.ByteString as BS
-import Data.Map (Map)
+import Data.List (intersperse)
 import qualified Data.Map as M
+import Data.Collections
+import Data.Collections.BaseInstances ()
 import Data.Monoid
 import Data.Monoid.Unicode
-import Network.HTTP.Lucu.HandleLike
 import Network.HTTP.Lucu.Parser.Http
-import Network.HTTP.Lucu.Utils
+import Prelude hiding (filter, foldr, lookup, null)
 import Prelude.Unicode
 
 newtype Headers
-    = Headers (Map CIAscii Ascii)
-      deriving (Eq, Show, Monoid)
+    = Headers (M.Map CIAscii Ascii)
+      deriving (Eq, Show)
 
 class HasHeaders a where
     getHeaders ∷ a → Headers
     setHeaders ∷ a → Headers → a
 
+    modifyHeaders ∷ (Headers → Headers) → a → a
+    {-# INLINE modifyHeaders #-}
+    modifyHeaders = (setHeaders ⊛) ∘ (∘ getHeaders)
+
     getHeader ∷ CIAscii → a → Maybe Ascii
     {-# INLINE getHeader #-}
-    getHeader !key !a
-        = case getHeaders a of
-            Headers m → M.lookup key m
+    getHeader = (∘ getHeaders) ∘ lookup
+
+    hasHeader ∷ CIAscii → a → Bool
+    {-# INLINE hasHeader #-}
+    hasHeader = (∘ getHeaders) ∘ member
+
+    getCIHeader ∷ CIAscii → a → Maybe CIAscii
+    {-# INLINE getCIHeader #-}
+    getCIHeader = ((A.toCIAscii <$>) ∘) ∘ getHeader
 
     deleteHeader ∷ CIAscii → a → a
     {-# INLINE deleteHeader #-}
-    deleteHeader !key !a
-        = case getHeaders a of
-            Headers m
-              → setHeaders a $ Headers $ M.delete key m
+    deleteHeader = modifyHeaders ∘ delete
 
     setHeader ∷ CIAscii → Ascii → a → a
     {-# INLINE setHeader #-}
-    setHeader !key !val !a
-        = case getHeaders a of
-            Headers m
-              → setHeaders a $ Headers $ M.insert key val m
+    setHeader = (modifyHeaders ∘) ∘ insertWith const
 
 instance HasHeaders Headers where
     getHeaders   = id
     setHeaders _ = id
 
-toHeaders ∷ [(CIAscii, Ascii)] → Headers
-{-# INLINE toHeaders #-}
-toHeaders = flip mkHeaders (∅)
-
-mkHeaders ∷ [(CIAscii, Ascii)] → Headers → Headers
-mkHeaders []              (Headers m) = Headers m
-mkHeaders ((key, val):xs) (Headers m)
-    = mkHeaders xs $ Headers $
-      case M.lookup key m of
-        Nothing  → M.insert key val m
-        Just old → M.insert key (merge old val) m
+-- |@'insert' (key, val)@ merges @val@ with an existing one if any.
+instance Unfoldable Headers (CIAscii, Ascii) where
+    {-# INLINE insert #-}
+    insert (key, val) (Headers m)
+        = Headers $ insertWith merge key val m
+    {-# INLINE empty #-}
+    empty
+        = Headers empty
+    {-# INLINE singleton #-}
+    singleton v
+        = Headers $ singleton v
+    {-# INLINE insertMany #-}
+    insertMany f (Headers m)
+        = Headers $ insertMany f m
+    {-# INLINE insertManySorted #-}
+    insertManySorted f (Headers m)
+        = Headers $ insertManySorted f m
+
+instance Foldable Headers (CIAscii, Ascii) where
+    {-# INLINE foldr #-}
+    foldr f b (Headers m) = foldr f b m
+
+instance Collection Headers (CIAscii, Ascii) where
+    {-# INLINE filter #-}
+    filter f (Headers m) = Headers $ filter f m
+
+instance Indexed Headers CIAscii Ascii where
+    {-# INLINE index #-}
+    index k (Headers m) = index k m
+    {-# INLINE adjust #-}
+    adjust f k (Headers m) = Headers $ adjust f k m
+    {-# INLINE inDomain #-}
+    inDomain k (Headers m) = inDomain k m
+
+instance Monoid Headers where
+    {-# INLINE mempty #-}
+    mempty = empty
+    {-# INLINE mappend #-}
+    mappend (Headers α) (Headers β)
+        = Headers $ insertManySorted β α
+
+instance Map Headers CIAscii Ascii where
+    {-# INLINE lookup #-}
+    lookup k (Headers m) = lookup k m
+    {-# INLINE insertWith #-}
+    insertWith f k v (Headers m)
+        = Headers $ insertWith f k v m
+    {-# INLINE mapWithKey #-}
+    mapWithKey f (Headers m)
+        = Headers $ mapWithKey f m
+    {-# INLINE unionWith #-}
+    unionWith f (Headers α) (Headers β)
+        = Headers $ unionWith f α β
+    {-# INLINE intersectionWith #-}
+    intersectionWith f (Headers α) (Headers β)
+        = Headers $ intersectionWith f α β
+    {-# INLINE differenceWith #-}
+    differenceWith f (Headers α) (Headers β)
+        = Headers $ differenceWith f α β
+    {-# INLINE isSubmapBy #-}
+    isSubmapBy f (Headers α) (Headers β)
+        = isSubmapBy f α β
+    {-# INLINE isProperSubmapBy #-}
+    isProperSubmapBy f (Headers α) (Headers β)
+        = isProperSubmapBy f α β
+
+instance SortingCollection Headers (CIAscii, Ascii) where
+    {-# INLINE minView #-}
+    minView (Headers m) = second Headers <$> minView m
+
+merge ∷ Ascii → Ascii → Ascii
+{-# INLINE merge #-}
+merge a b
+    | nullA a ∧ nullA b = (∅)
+    | nullA a           = b
+    |           nullA b = a
+    | otherwise         = a ⊕ ", " ⊕ b
     where
-      merge ∷ Ascii → Ascii → Ascii
-      {-# INLINE merge #-}
-      merge a b
-          | nullA a ∧ nullA b = (∅)
-          | nullA a           = b
-          |           nullA b = a
-          | otherwise         = a ⊕ ", " ⊕ b
-
       nullA ∷ Ascii → Bool
       {-# INLINE nullA #-}
-      nullA = BS.null ∘ A.toByteString
-
-fromHeaders ∷ Headers → [(CIAscii, Ascii)]
-fromHeaders (Headers m) = M.toList m
+      nullA = null ∘ A.toByteString
 
 {-
   message-header = field-name ":" [ field-value ]
@@ -99,17 +161,17 @@ fromHeaders (Headers m) = M.toList m
   field-value の先頭および末尾にある LWS は全て削除され、それ以外の
   LWS は單一の SP に變換される。
 -}
-headersP ∷ Parser Headers
-{-# INLINEABLE headersP #-}
-headersP = do xs ← P.many $ try header
-              crlf
-              return $ toHeaders xs
+headers ∷ Parser Headers
+{-# INLINEABLE headers #-}
+headers = do xs ← P.many header
+             crlf
+             return $ fromFoldable xs
     where
       header ∷ Parser (CIAscii, Ascii)
       header = do name ← A.toCIAscii <$> token
-                  _    ← char ':'
+                  void $ char ':'
                   skipMany lws
-                  values ← sepBy content (try lws)
+                  values ← content `sepBy` try lws
                   skipMany (try lws)
                   crlf
                   return (name, joinValues values)
@@ -118,19 +180,23 @@ headersP = do xs ← P.many $ try header
       {-# INLINE content #-}
       content = A.unsafeFromByteString
                 <$>
-                takeWhile1 (\c → ((¬) (isSPHT c)) ∧ isText c)
+                takeWhile1 (\c → isText c ∧ c ≢ '\x20')
 
       joinValues ∷ [Ascii] → Ascii
       {-# INLINE joinValues #-}
-      joinValues = A.fromAsciiBuilder ∘ joinWith "\x20" ∘ map A.toAsciiBuilder
-
-hPutHeaders ∷ HandleLike h => h → Headers → IO ()
-hPutHeaders !h !(Headers m)
-    = mapM_ putH (M.toList m) >> hPutBS h "\r\n"
+      joinValues = A.fromAsciiBuilder
+                   ∘ mconcat
+                   ∘ intersperse (A.toAsciiBuilder "\x20")
+                   ∘ map A.toAsciiBuilder
+
+printHeaders ∷ Headers → AsciiBuilder
+printHeaders (Headers m)
+    = mconcat (map printHeader (fromFoldable m)) ⊕
+      A.toAsciiBuilder "\x0D\x0A"
     where
-      putH ∷ (CIAscii, Ascii) → IO ()
-      putH (!name, !value)
-          = do hPutBS h (A.ciToByteString name)
-               hPutBS h ": "
-               hPutBS h (A.toByteString value)
-               hPutBS h "\r\n"
+      printHeader ∷ (CIAscii, Ascii) → AsciiBuilder
+      printHeader (name, value)
+          = A.toAsciiBuilder (A.fromCIAscii name) ⊕
+            A.toAsciiBuilder ": "                 ⊕
+            A.toAsciiBuilder value                ⊕
+            A.toAsciiBuilder "\x0D\x0A"