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authortv <tv@shackspace.de>2015-03-04 20:55:13 +0100
committertv <tv@shackspace.de>2015-03-04 20:55:13 +0100
commitc2506144edbe41f896a54c5cfd7c829f35ec120d (patch)
tree91337b878f245db72b2b09838986915ae2c7fde1 /Codec/MIME/Parse.hs
parenta0fc644165cdcedfc430cb84c38f87fc960515a0 (diff)
mime: use CI
Diffstat (limited to 'Codec/MIME/Parse.hs')
-rw-r--r--Codec/MIME/Parse.hs47
1 files changed, 23 insertions, 24 deletions
diff --git a/Codec/MIME/Parse.hs b/Codec/MIME/Parse.hs
index f9dfeb2..803e4b2 100644
--- a/Codec/MIME/Parse.hs
+++ b/Codec/MIME/Parse.hs
@@ -28,6 +28,8 @@ import Codec.MIME.Type
import Codec.MIME.Decode
import Control.Arrow(second)
+import Data.CaseInsensitive (CI)
+import qualified Data.CaseInsensitive as CI
import Data.Char
import Data.Maybe
import qualified Data.List as L
@@ -44,7 +46,7 @@ doTrace | enableTrace = trace
parseMIMEBody :: [MIMEParam] -> T.Text -> MIMEValue
-parseMIMEBody headers_in body = result { mime_val_headers = headers }
+parseMIMEBody headers body = result { mime_val_headers = headers }
where
result = case mimeType mty of
Multipart{} -> fst (parseMultipart mty body)
@@ -53,7 +55,6 @@ parseMIMEBody headers_in body = result { mime_val_headers = headers }
, mime_val_disp = parseContentDisp headers
, mime_val_content = Single (processBody headers body)
}
- headers = [ MIMEParam (T.toLower k) v | (MIMEParam k v) <- headers_in ]
mty = fromMaybe defaultType
(parseContentType =<< lookupField "content-type" (paramPairs headers))
defaultType :: Type
@@ -66,32 +67,31 @@ parseContentDisp headers =
(processDisp . dropFoldingWSP) =<< lookupField "content-disposition" (paramPairs headers)
where
processDisp t | T.null t = Nothing
- | T.null bs = Just $ Disposition { dispType = toDispType (T.toLower as)
+ | T.null bs = Just $ Disposition { dispType = toDispType as
, dispParams = []
}
- | otherwise = Just $ Disposition { dispType = toDispType (T.toLower as)
+ | otherwise = Just $ Disposition { dispType = toDispType as
, dispParams = processParams (parseParams bs)
}
where (as,bs) = T.break (\ch -> isSpace ch || ch == ';') t
processParams = map procP
where
- procP (MIMEParam as val)
- | "name" == asl = Name val
- | "filename" == asl = Filename val
- | "creation-date" == asl = CreationDate val
- | "modification-date" == asl = ModDate val
- | "read-date" == asl = ReadDate val
- | "size" == asl = Size val
- | otherwise = OtherParam asl val
- where asl = T.toLower as
+ procP (MIMEParam k val)
+ | "name" == k = Name val
+ | "filename" == k = Filename val
+ | "creation-date" == k = CreationDate val
+ | "modification-date" == k = ModDate val
+ | "read-date" == k = ReadDate val
+ | "size" == k = Size val
+ | otherwise = OtherParam k val
toDispType t = if t == "inline" then DispInline
else if t == "attachment" then DispAttachment
else if t == "form-data" then DispFormData
else DispOther t
-paramPairs :: [MIMEParam] -> [(T.Text, T.Text)]
+paramPairs :: [MIMEParam] -> [(CI T.Text, T.Text)]
paramPairs = map paramPair
where
paramPair (MIMEParam a b) = (a,b)
@@ -117,7 +117,7 @@ parseMIMEMessage entity =
parseHeaders :: T.Text -> ([MIMEParam], T.Text)
parseHeaders str =
case findFieldName "" str of
- Left (nm, rs) -> parseFieldValue nm (dropFoldingWSP rs)
+ Left (nm, rs) -> parseFieldValue (CI.mk nm) (dropFoldingWSP rs)
Right body -> ([],body)
where
findFieldName acc t
@@ -183,21 +183,21 @@ parseMIMEType = parseContentType
parseContentType :: T.Text -> Maybe Type
parseContentType str
| T.null minor0 = doTrace ("unable to parse content-type: " ++ show str) $ Nothing
- | otherwise = Just Type { mimeType = toType maj as
+ | otherwise = Just Type { mimeType = toType (CI.mk maj) as
, mimeParams = parseParams (T.dropWhile isHSpace bs)
}
where
(maj, minor0) = T.break (=='/') (dropFoldingWSP str)
minor = T.drop 1 minor0
(as, bs) = T.break (\ ch -> isHSpace ch || isTSpecial ch) minor
- toType a b = case lookupField (T.toLower a) mediaTypes of
+ toType a b = case lookupField a mediaTypes of
Just ctor -> ctor b
_ -> Other a b
parseParams :: T.Text -> [MIMEParam]
parseParams t | T.null t = []
| ';' == T.head t = let (nm_raw, vs0) = T.break (=='=') (dropFoldingWSP $ T.tail t)
- nm = T.toLower nm_raw in
+ nm = CI.mk nm_raw in
if T.null vs0
then []
else let vs = T.tail vs0 in
@@ -211,7 +211,7 @@ parseParams t | T.null t = []
MIMEParam nm val : parseParams (T.dropWhile isHSpace zs)
| otherwise = doTrace ("Codec.MIME.Parse.parseParams: curious param value -- " ++ show t) []
-mediaTypes :: [(T.Text, T.Text -> MIMEType)]
+mediaTypes :: [(CI T.Text, T.Text -> MIMEType)]
mediaTypes =
[ ("multipart", (Multipart . toMultipart))
, ("application", Application)
@@ -222,11 +222,11 @@ mediaTypes =
, ("text", Text)
, ("video", Video)
]
- where toMultipart b = fromMaybe other (lookupField (T.toLower b) multipartTypes)
+ where toMultipart b = fromMaybe other (lookupField (CI.mk b) multipartTypes)
where other | T.isPrefixOf "x-" b = Extension b
| otherwise = OtherMulti b
-multipartTypes :: [(T.Text, Multipart)]
+multipartTypes :: [(CI T.Text, Multipart)]
multipartTypes =
[ ("alternative", Alternative)
, ("byteranges", Byteranges)
@@ -283,7 +283,7 @@ takeUntilCRLF str = go "" str
| otherwise = go (T.take 1 t <> acc) $ T.tail t
-- case in-sensitive lookup of field names or attributes\/parameters.
-lookupField :: T.Text -> [(T.Text,a)] -> Maybe a
+lookupField :: CI T.Text -> [(CI T.Text,a)] -> Maybe a
lookupField n ns =
-- assume that inputs have been mostly normalized already
-- (i.e., lower-cased), but should the lookup fail fall back
@@ -291,6 +291,5 @@ lookupField n ns =
case lookup n ns of
x@Just{} -> x
Nothing ->
- let nl = T.toLower n in
- fmap snd $ L.find ((nl==) . T.toLower . fst) ns
+ fmap snd $ L.find ((n==) . fst) ns