X-Git-Url: http://git.cielonegro.org/gitweb.cgi?a=blobdiff_plain;f=Network%2FHTTP%2FLucu%2FMIMEType.hs;h=ab0e06596320d343164211017a8725ada3b9f07b;hb=a362be1c8664306b970c32e1df9b62081498feb1;hp=4128f53b91c3d58fbd560af850c8a6ae16b8f29d;hpb=65a16e9330e797303a5cf8143dcbe135812d526f;p=Lucu.git diff --git a/Network/HTTP/Lucu/MIMEType.hs b/Network/HTTP/Lucu/MIMEType.hs index 4128f53..ab0e065 100644 --- a/Network/HTTP/Lucu/MIMEType.hs +++ b/Network/HTTP/Lucu/MIMEType.hs @@ -2,90 +2,83 @@ OverloadedStrings , UnicodeSyntax #-} -{-# OPTIONS_HADDOCK prune #-} --- |Manipulation of MIME Types. +-- |MIME Types module Network.HTTP.Lucu.MIMEType ( MIMEType(..) + , mkMIMEType + , parseMIMEType , printMIMEType - , mimeTypeP - , mimeTypeListP + , mimeType + , mimeTypeList ) where import Control.Applicative -import Data.Ascii (Ascii, CIAscii) +import Data.Ascii (Ascii, AsciiBuilder, CIAscii) import qualified Data.Ascii as A import Data.Attoparsec.Char8 as P -import qualified Data.ByteString.Char8 as C8 +import Data.Map (Map) import Data.Monoid.Unicode +import Data.Text (Text) import Network.HTTP.Lucu.Parser.Http -import Network.HTTP.Lucu.Utils +import Network.HTTP.Lucu.RFC2231 import Prelude hiding (min) import Prelude.Unicode --- |@'MIMEType' \"major\" \"minor\" [(\"name\", \"value\")]@ --- represents \"major\/minor; name=value\". +-- |@'MIMEType' \"major\" \"minor\" [(\"name\", \"value\"), ...]@ +-- represents \"major\/minor; name=value; ...\". data MIMEType = MIMEType { mtMajor ∷ !CIAscii , mtMinor ∷ !CIAscii - , mtParams ∷ ![ (CIAscii, Ascii) ] - } deriving (Eq, Show) + , mtParams ∷ !(Map CIAscii Text) + } deriving (Eq) + +instance Show MIMEType where + show = A.toString ∘ A.fromAsciiBuilder ∘ printMIMEType + +-- |@'mkMIMEType' major minor@ returns a 'MIMEType' with the given +-- @major@ and @minor@ types but without any parameters. +mkMIMEType ∷ CIAscii → CIAscii → MIMEType +{-# INLINE mkMIMEType #-} +mkMIMEType maj min + = MIMEType maj min (∅) --- |Convert a 'MIMEType' to 'Ascii'. -printMIMEType ∷ MIMEType → Ascii +-- |Convert a 'MIMEType' to an 'AsciiBuilder'. +printMIMEType ∷ MIMEType → AsciiBuilder +{-# INLINEABLE printMIMEType #-} printMIMEType (MIMEType maj min params) - = A.fromAsciiBuilder $ - ( A.toAsciiBuilder (A.fromCIAscii maj) ⊕ - A.toAsciiBuilder "/" ⊕ - A.toAsciiBuilder (A.fromCIAscii min) ⊕ - if null params then - (∅) - else - A.toAsciiBuilder "; " ⊕ - joinWith "; " (map printPair params) - ) - where - printPair ∷ (CIAscii, Ascii) → A.AsciiBuilder - printPair (name, value) - = A.toAsciiBuilder (A.fromCIAscii name) ⊕ - A.toAsciiBuilder "=" ⊕ - if C8.any ((¬) ∘ isToken) (A.toByteString value) then - quoteStr value - else - A.toAsciiBuilder value + = A.toAsciiBuilder (A.fromCIAscii maj) ⊕ + A.toAsciiBuilder "/" ⊕ + A.toAsciiBuilder (A.fromCIAscii min) ⊕ + printMIMEParams params -- |Parse 'MIMEType' from an 'Ascii'. This function throws an -- exception for parse error. parseMIMEType ∷ Ascii → MIMEType +{-# INLINEABLE parseMIMEType #-} parseMIMEType str - = let p = do t ← mimeTypeP - endOfInput - return t - bs = A.toByteString str - in - case parseOnly p bs of - Right t → t - Left err → error ("unparsable MIME Type: " ⧺ C8.unpack bs ⧺ ": " ⧺ err) - -mimeTypeP ∷ Parser MIMEType -mimeTypeP = try $ - do maj ← A.toCIAscii <$> token - _ ← char '/' - min ← A.toCIAscii <$> token - params ← P.many paramP - return $ MIMEType maj min params + = case parseOnly p $ A.toByteString str of + Right t → t + Left err → error ("unparsable MIME Type: " ⧺ A.toString str ⧺ ": " ⧺ err) where - paramP ∷ Parser (CIAscii, Ascii) - paramP = try $ - do skipMany lws - _ ← char ';' - skipMany lws - name ← A.toCIAscii <$> token - _ ← char '=' - value ← token <|> quotedStr - return (name, value) + p ∷ Parser MIMEType + {-# INLINE p #-} + p = do t ← mimeType + endOfInput + return t + +-- |'Parser' for an 'MIMEType'. +mimeType ∷ Parser MIMEType +{-# INLINEABLE mimeType #-} +mimeType = do maj ← A.toCIAscii <$> token + _ ← char '/' + min ← A.toCIAscii <$> token + params ← mimeParams + return $ MIMEType maj min params -mimeTypeListP ∷ Parser [MIMEType] -mimeTypeListP = listOf mimeTypeP +-- |'Parser' for a list of 'MIMEType's. +mimeTypeList ∷ Parser [MIMEType] +{-# INLINE mimeTypeList #-} +mimeTypeList = listOf mimeType