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{- |
Module : MIME.Utils
Copyright : (c) 2007
Maintainer : tse-dev-team@galois.com
Stability : unstable
Portability : GHC
Extracting content from MIME values and types.
-}
module MIME.Utils
( findMultipartNamed -- :: String -> MIMEValue -> Maybe MIMEValue
) where
import MIME.Type
import Data.List ( find )
import Control.Monad ( msum )
-- | Given a parameter name, locate it within a MIME value,
-- returning the corresponding (sub) MIME value.
findMultipartNamed :: String -> MIMEValue -> Maybe MIMEValue
findMultipartNamed nm mv =
case mime_val_content mv of
Multi ms -> msum (map (findMultipartNamed nm) ms)
Single {} -> do cd <- mime_val_disp mv
find (withDispName nm) (dispParams cd)
return mv
where withDispName a (Name b) = a == b
withDispName _ _ = False
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