-- (<http://tools.ietf.org/html/rfc2231>).
module Network.HTTP.Lucu.MIMEParams
( MIMEParams
- , mimeParams
)
where
import Control.Applicative hiding (empty)
import Data.Ascii (Ascii, CIAscii, AsciiBuilder)
import qualified Data.Ascii as A
import Data.Attoparsec.Char8
+import Data.Attoparsec.Parsable
import Data.Bits
+import Data.ByteString (ByteString)
import qualified Data.ByteString.Char8 as BS
import Data.Char
import Data.Collections
section (InitialEncodedParam {..}) = 0
section ep = epSection ep
--- |'Parser' for MIME parameter values.
-mimeParams ∷ Parser MIMEParams
-{-# INLINEABLE mimeParams #-}
-mimeParams = decodeParams =≪ many (try paramP)
+instance Parsable ByteString MIMEParams where
+ {-# INLINEABLE parser #-}
+ parser = decodeParams =≪ many (try parser)
-paramP ∷ Parser ExtendedParam
-paramP = do skipMany lws
- void $ char ';'
- skipMany lws
- epm ← nameP
- void $ char '='
- case epm of
- (name, 0, True)
- → do (charset, payload) ← initialEncodedValue
- return $ InitialEncodedParam name charset payload
- (name, sect, True)
- → do payload ← encodedPayload
- return $ ContinuedEncodedParam name sect payload
- (name, sect, False)
- → do payload ← token <|> quotedStr
- return $ AsciiParam name sect payload
+instance Parsable ByteString ExtendedParam where
+ parser = do skipMany lws
+ void $ char ';'
+ skipMany lws
+ epm ← name
+ void $ char '='
+ case epm of
+ (nm, 0, True)
+ → do (charset, payload) ← initialEncodedValue
+ return $ InitialEncodedParam nm charset payload
+ (nm, sect, True)
+ → do payload ← encodedPayload
+ return $ ContinuedEncodedParam nm sect payload
+ (nm, sect, False)
+ → do payload ← token <|> quotedStr
+ return $ AsciiParam nm sect payload
-nameP ∷ Parser (CIAscii, Integer, Bool)
-nameP = do name ← (cs ∘ A.unsafeFromByteString) <$>
- takeWhile1 (\c → isToken c ∧ c ≢ '*')
- sect ← option 0 $ try (char '*' *> decimal )
- isEncoded ← option False $ try (char '*' *> pure True)
- return (name, sect, isEncoded)
+name ∷ Parser (CIAscii, Integer, Bool)
+name = do nm ← (cs ∘ A.unsafeFromByteString) <$>
+ takeWhile1 (\c → isToken c ∧ c ≢ '*')
+ sect ← option 0 $ try (char '*' *> decimal )
+ isEncoded ← option False $ try (char '*' *> pure True)
+ return (nm, sect, isEncoded)
initialEncodedValue ∷ Parser (CIAscii, BS.ByteString)
initialEncodedValue