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-rw-r--r--src/Text/Pandoc/Readers/Org.hs58
1 files changed, 29 insertions, 29 deletions
diff --git a/src/Text/Pandoc/Readers/Org.hs b/src/Text/Pandoc/Readers/Org.hs
index d82541638..3f29d06ef 100644
--- a/src/Text/Pandoc/Readers/Org.hs
+++ b/src/Text/Pandoc/Readers/Org.hs
@@ -1239,37 +1239,37 @@ applyCustomLinkFormat link = do
formatter <- M.lookup linkType <$> asksF orgStateLinkFormatters
return $ maybe link ($ drop 1 rest) formatter
--- TODO: might be a lot smarter/cleaner to use parsec and ADTs for this kind
--- of parsing.
+-- | Take a link and return a function which produces new inlines when given
+-- description inlines.
linkToInlinesF :: String -> Inlines -> F Inlines
-linkToInlinesF s =
+linkToInlinesF linkStr =
+ case linkStr of
+ "" -> pure . B.link mempty "" -- wiki link (empty by convention)
+ ('#':_) -> pure . B.link linkStr "" -- document-local fraction
+ _ -> case cleanLinkString linkStr of
+ (Just cleanedLink) -> if isImageFilename cleanedLink
+ then const . pure $ B.image cleanedLink "" ""
+ else pure . B.link cleanedLink ""
+ Nothing -> internalLink linkStr -- other internal link
+
+-- | Cleanup and canonicalize a string describing a link. Return @Nothing@ if
+-- the string does not appear to be a link.
+cleanLinkString :: String -> Maybe String
+cleanLinkString s =
case s of
- "" -> pure . B.link "" ""
- ('#':_) -> pure . B.link s ""
- _ | isImageFilename s -> const . pure $ B.image s "" ""
- _ | isFileLink s -> pure . B.link (dropLinkType s) ""
- _ | isUri s -> pure . B.link s ""
- _ | isAbsoluteFilePath s -> pure . B.link ("file://" ++ s) ""
- _ | isRelativeFilePath s -> pure . B.link s ""
- _ -> internalLink s
-
-isFileLink :: String -> Bool
-isFileLink s = ("file:" `isPrefixOf` s) && not ("file://" `isPrefixOf` s)
-
-dropLinkType :: String -> String
-dropLinkType = tail . snd . break (== ':')
-
-isRelativeFilePath :: String -> Bool
-isRelativeFilePath s = (("./" `isPrefixOf` s) || ("../" `isPrefixOf` s)) &&
- (':' `notElem` s)
-
-isUri :: String -> Bool
-isUri s = let (scheme, path) = break (== ':') s
- in all (\c -> isAlphaNum c || c `elem` (".-" :: String)) scheme
- && not (null path)
-
-isAbsoluteFilePath :: String -> Bool
-isAbsoluteFilePath = ('/' ==) . head
+ '/':_ -> Just $ "file://" ++ s -- absolute path
+ '.':'/':_ -> Just s -- relative path
+ '.':'.':'/':_ -> Just s -- relative path
+ -- Relative path or URL (file schema)
+ 'f':'i':'l':'e':':':s' -> Just $ if ("//" `isPrefixOf` s') then s else s'
+ _ | isUrl s -> Just s -- URL
+ _ -> Nothing
+ where
+ isUrl :: String -> Bool
+ isUrl cs =
+ let (scheme, path) = break (== ':') cs
+ in all (\c -> isAlphaNum c || c `elem` (".-"::String)) scheme
+ && not (null path)
isImageFilename :: String -> Bool
isImageFilename filename =