diff options
| -rw-r--r-- | src/Text/Pandoc/Readers/Org.hs | 439 |
1 files changed, 212 insertions, 227 deletions
diff --git a/src/Text/Pandoc/Readers/Org.hs b/src/Text/Pandoc/Readers/Org.hs index f16aed48d..97a15576b 100644 --- a/src/Text/Pandoc/Readers/Org.hs +++ b/src/Text/Pandoc/Readers/Org.hs @@ -1,6 +1,7 @@ {-# LANGUAGE OverloadedStrings #-} {-# LANGUAGE GeneralizedNewtypeDeriving #-} {-# LANGUAGE FlexibleContexts #-} +{-# LANGUAGE ScopedTypeVariables #-} {- Copyright (C) 2014 Albert Krewinkel <tarleb@moltkeplatz.de> @@ -45,34 +46,48 @@ import Text.Pandoc.Shared (compactify', compactify'DL) import Text.TeXMath (readTeX, writePandoc, DisplayType(..)) import qualified Text.TeXMath.Readers.MathML.EntityMap as MathMLEntityMap -import Control.Applicative ( Applicative, pure +import Control.Applicative ( pure , (<$>), (<$), (<*>), (<*), (*>) ) import Control.Arrow (first) -import Control.Monad (foldM, guard, liftM, liftM2, mplus, mzero, when) +import Control.Monad (guard, mplus, mzero, when) import Control.Monad.Reader (Reader, runReader, ask, asks) import Data.Char (isAlphaNum, toLower) import Data.Default -import Data.List (intersperse, isPrefixOf, isSuffixOf) +import Data.List (intersperse, isPrefixOf, isSuffixOf, foldl') import qualified Data.Map as M import Data.Maybe (fromMaybe, isJust) -import Data.Monoid (Monoid, mconcat, mempty, mappend) +import Data.Monoid (mconcat, mempty, mappend) import Network.HTTP (urlEncode) -- | Parse org-mode string and return a Pandoc document. readOrg :: ReaderOptions -- ^ Reader options -> String -- ^ String to parse (assuming @'\n'@ line endings) -> Pandoc -readOrg opts s = readWith parseOrg def{ orgStateOptions = opts } (s ++ "\n\n") +readOrg opts s = runOrg opts s parseOrg -type OrgParser = Parser [Char] OrgParserState +runOrg :: ReaderOptions -> String -> OrgParser a -> a +runOrg opts inp p = fst res + where + imd = readWithM (retState p) def{ orgStateOptions = opts } (inp ++ "\n\n") + res = runReader imd s + s :: OrgParserState + s = snd $ runReader imd s + +retState :: OrgParser a -> OrgParser (a, OrgParserState) +retState p = do + r <- p + s <- getState + return (r, s) + +type OrgParser a = ParserT [Char] OrgParserState (Reader OrgParserState) a parseOrg :: OrgParser Pandoc parseOrg = do blocks' <- parseBlocks st <- getState - let meta = runF (orgStateMeta' st) st + let meta = orgStateMeta st let removeUnwantedBlocks = dropCommentTrees . filter (/= Null) - return $ Pandoc meta $ removeUnwantedBlocks (B.toList $ runF blocks' st) + return $ Pandoc meta $ removeUnwantedBlocks (B.toList $ blocks') -- | Drop COMMENT headers and the document tree below those headers. dropCommentTrees :: [Block] -> [Block] @@ -102,7 +117,7 @@ isHeaderLevelLowerEq n blk = -- Parser State for Org -- -type OrgNoteRecord = (String, F Blocks) +type OrgNoteRecord = (String, Blocks) type OrgNoteTable = [OrgNoteRecord] type OrgBlockAttributes = M.Map String String @@ -121,7 +136,6 @@ data OrgParserState = OrgParserState , orgStateLastStrPos :: Maybe SourcePos , orgStateLinkFormatters :: OrgLinkFormatters , orgStateMeta :: Meta - , orgStateMeta' :: F Meta , orgStateNotes' :: OrgNoteTable } @@ -153,13 +167,13 @@ defaultOrgParserState = OrgParserState , orgStateLastStrPos = Nothing , orgStateLinkFormatters = M.empty , orgStateMeta = nullMeta - , orgStateMeta' = return nullMeta , orgStateNotes' = [] } recordAnchorId :: String -> OrgParser () recordAnchorId i = updateState $ \s -> - s{ orgStateAnchorIds = i : (orgStateAnchorIds s) } + let as = orgStateAnchorIds s in + s{ orgStateAnchorIds = i : as } addBlockAttribute :: String -> String -> OrgParser () addBlockAttribute key val = updateState $ \s -> @@ -238,30 +252,6 @@ parseFromString parser str' = do -- Adaptions and specializations of parsing utilities -- -newtype F a = F { unF :: Reader OrgParserState a - } deriving (Monad, Applicative, Functor) - -runF :: F a -> OrgParserState -> a -runF = runReader . unF - -askF :: F OrgParserState -askF = F ask - -asksF :: (OrgParserState -> a) -> F a -asksF f = F $ asks f - -instance Monoid a => Monoid (F a) where - mempty = return mempty - mappend = liftM2 mappend - mconcat = fmap mconcat . sequence - -trimInlinesF :: F Inlines -> F Inlines -trimInlinesF = liftM trimInlines - -returnF :: a -> OrgParser (F a) -returnF = return . return - - -- | Like @Text.Parsec.Char.newline@, but causes additional state changes. newline :: OrgParser Char newline = @@ -280,10 +270,10 @@ blanklines = -- parsing blocks -- -parseBlocks :: OrgParser (F Blocks) +parseBlocks :: OrgParser Blocks parseBlocks = mconcat <$> manyTill block eof -block :: OrgParser (F Blocks) +block :: OrgParser Blocks block = choice [ mempty <$ blanklines , optionalAttributes $ choice [ orgBlock @@ -294,14 +284,14 @@ block = choice [ mempty <$ blanklines , drawer , specialLine , header - , return <$> hline + , hline , list , latexFragment , noteBlock , paraOrPlain ] <?> "block" -optionalAttributes :: OrgParser (F Blocks) -> OrgParser (F Blocks) +optionalAttributes :: OrgParser Blocks -> OrgParser Blocks optionalAttributes parser = try $ resetBlockAttributes *> parseBlockAttributes *> parser @@ -321,7 +311,7 @@ parseAndAddAttribute key value = do let key' = map toLower key () <$ addBlockAttribute key' value -lookupInlinesAttr :: String -> OrgParser (Maybe (F Inlines)) +lookupInlinesAttr :: String -> OrgParser (Maybe Inlines) lookupInlinesAttr attr = try $ do val <- lookupBlockAttribute attr maybe (return Nothing) @@ -335,20 +325,20 @@ lookupInlinesAttr attr = try $ do type BlockProperties = (Int, String) -- (Indentation, Block-Type) -orgBlock :: OrgParser (F Blocks) +orgBlock :: OrgParser Blocks orgBlock = try $ do blockProp@(_, blkType) <- blockHeaderStart ($ blockProp) $ case blkType of "comment" -> withRaw' (const mempty) - "html" -> withRaw' (return . (B.rawBlock blkType)) - "latex" -> withRaw' (return . (B.rawBlock blkType)) - "ascii" -> withRaw' (return . (B.rawBlock blkType)) - "example" -> withRaw' (return . exampleCode) - "quote" -> withParsed (fmap B.blockQuote) + "html" -> withRaw' (B.rawBlock blkType) + "latex" -> withRaw' (B.rawBlock blkType) + "ascii" -> withRaw' (B.rawBlock blkType) + "example" -> withRaw' exampleCode + "quote" -> withParsed B.blockQuote "verse" -> verseBlock "src" -> codeBlock - _ -> withParsed (fmap $ divWithClass blkType) + _ -> withParsed (divWithClass blkType) blockHeaderStart :: OrgParser (Int, String) blockHeaderStart = try $ (,) <$> indent <*> blockType @@ -356,10 +346,10 @@ blockHeaderStart = try $ (,) <$> indent <*> blockType indent = length <$> many spaceChar blockType = map toLower <$> (stringAnyCase "#+begin_" *> orgArgWord) -withRaw' :: (String -> F Blocks) -> BlockProperties -> OrgParser (F Blocks) +withRaw' :: (String -> Blocks) -> BlockProperties -> OrgParser Blocks withRaw' f blockProp = (ignHeaders *> (f <$> rawBlockContent blockProp)) -withParsed :: (F Blocks -> F Blocks) -> BlockProperties -> OrgParser (F Blocks) +withParsed :: (Blocks -> Blocks) -> BlockProperties -> OrgParser Blocks withParsed f blockProp = (ignHeaders *> (f <$> parsedBlockContent blockProp)) ignHeaders :: OrgParser () @@ -368,11 +358,11 @@ ignHeaders = (() <$ newline) <|> (() <$ anyLine) divWithClass :: String -> Blocks -> Blocks divWithClass cls = B.divWith ("", [cls], []) -verseBlock :: BlockProperties -> OrgParser (F Blocks) +verseBlock :: BlockProperties -> OrgParser Blocks verseBlock blkProp = try $ do ignHeaders content <- rawBlockContent blkProp - fmap B.para . mconcat . intersperse (pure B.linebreak) + B.para . mconcat . intersperse B.linebreak <$> mapM (parseFromString parseInlines) (lines content) exportsCode :: [(String, String)] -> Bool @@ -389,7 +379,7 @@ followingResultsBlock = *> blankline *> (unlines <$> many1 exampleLine)) -codeBlock :: BlockProperties -> OrgParser (F Blocks) +codeBlock :: BlockProperties -> OrgParser Blocks codeBlock blkProp = do skipSpaces (classes, kv) <- codeHeaderArgs <|> (mempty <$ ignHeaders) @@ -399,17 +389,15 @@ codeBlock blkProp = do let includeCode = exportsCode kv let includeResults = exportsResults kv let codeBlck = B.codeBlockWith ( id', classes, kv ) content - labelledBlck <- maybe (pure codeBlck) - (labelDiv codeBlck) + labelledBlck <- maybe codeBlck (labelDiv codeBlck) <$> lookupInlinesAttr "caption" - let resultBlck = pure $ maybe mempty (exampleCode) resultsContent + let resultBlck = maybe mempty exampleCode resultsContent return $ (if includeCode then labelledBlck else mempty) <> (if includeResults then resultBlck else mempty) where labelDiv blk value = - B.divWith nullAttr <$> (mappend <$> labelledBlock value - <*> pure blk) - labelledBlock = fmap (B.plain . B.spanWith ("", ["label"], [])) + B.divWith nullAttr (labelledBlock value <> blk) + labelledBlock = B.plain . B.spanWith ("", ["label"], []) rawBlockContent :: BlockProperties -> OrgParser String rawBlockContent (indent, blockType) = try $ @@ -418,7 +406,7 @@ rawBlockContent (indent, blockType) = try $ indentedLine = try $ ("" <$ blankline) <|> (indentWith indent *> anyLine) blockEnder = try $ indentWith indent *> stringAnyCase ("#+end_" <> blockType) -parsedBlockContent :: BlockProperties -> OrgParser (F Blocks) +parsedBlockContent :: BlockProperties -> OrgParser Blocks parsedBlockContent blkProps = try $ do raw <- rawBlockContent blkProps parseFromString parseBlocks (raw ++ "\n") @@ -509,9 +497,9 @@ commaEscaped (',':cs@('*':_)) = cs commaEscaped (',':cs@('#':'+':_)) = cs commaEscaped cs = cs -example :: OrgParser (F Blocks) +example :: OrgParser Blocks example = try $ do - return . return . exampleCode =<< unlines <$> many1 exampleLine + return . exampleCode =<< unlines <$> many1 exampleLine exampleCode :: String -> Blocks exampleCode = B.codeBlockWith ("", ["example"], []) @@ -520,7 +508,7 @@ exampleLine :: OrgParser String exampleLine = try $ skipSpaces *> string ": " *> anyLine -- Drawers for properties or a logbook -drawer :: OrgParser (F Blocks) +drawer :: OrgParser Blocks drawer = try $ do drawerStart manyTill drawerLine (try drawerEnd) @@ -546,14 +534,12 @@ drawerEnd = try $ -- -- Figures (Image on a line by itself, preceded by name and/or caption) -figure :: OrgParser (F Blocks) +figure :: OrgParser Blocks figure = try $ do (cap, nam) <- nameAndCaption src <- skipSpaces *> selfTarget <* skipSpaces <* P.newline guard (isImageFilename src) - return $ do - cap' <- cap - return $ B.para $ B.image src nam cap' + return $ B.para $ B.image src nam cap where nameAndCaption = do @@ -569,8 +555,8 @@ figure = try $ do -- -- Comments, Options and Metadata -specialLine :: OrgParser (F Blocks) -specialLine = fmap return . try $ metaLine <|> commentLine +specialLine :: OrgParser Blocks +specialLine = try $ metaLine <|> commentLine metaLine :: OrgParser Blocks metaLine = try $ mempty @@ -590,14 +576,14 @@ commentLineStart = try $ mappend <$> many spaceChar <*> string "# " declarationLine :: OrgParser () declarationLine = try $ do key <- metaKey - inlinesF <- metaInlines + inlines <- metaInlines updateState $ \st -> - let meta' = B.setMeta <$> pure key <*> inlinesF <*> pure nullMeta - in st { orgStateMeta' = orgStateMeta' st <> meta' } + let meta' = B.setMeta key inlines nullMeta + in st { orgStateMeta = orgStateMeta st <> meta' } return () -metaInlines :: OrgParser (F MetaValue) -metaInlines = fmap (MetaInlines . B.toList) <$> inlinesTillNewline +metaInlines :: OrgParser MetaValue +metaInlines = (MetaInlines . B.toList) <$> inlinesTillNewline metaKey :: OrgParser String metaKey = map toLower <$> many1 (noneOf ": \n\r") @@ -638,11 +624,11 @@ parseFormat = try $ do -- -- | Headers -header :: OrgParser (F Blocks) +header :: OrgParser Blocks header = try $ do level <- headerStart title <- inlinesTillNewline - return $ B.header level <$> title + return $ B.header level title headerStart :: OrgParser Int headerStart = try $ @@ -666,7 +652,7 @@ hline = try $ do -- Tables -- -data OrgTableRow = OrgContentRow (F [Blocks]) +data OrgTableRow = OrgContentRow [Blocks] | OrgAlignRow [Alignment] | OrgHlineRow @@ -677,13 +663,13 @@ data OrgTable = OrgTable , orgTableRows :: [[Blocks]] } -table :: OrgParser (F Blocks) +table :: OrgParser Blocks table = try $ do lookAhead tableStart do rows <- tableRows - cptn <- fromMaybe (pure "") <$> lookupInlinesAttr "caption" - return $ (<$> cptn) . orgToPandocTable . normalizeTable =<< rowsToTable rows + (cptn :: Inlines) <- fromMaybe "" <$> lookupInlinesAttr "caption" + return $ ($ cptn) . orgToPandocTable . normalizeTable . rowsToTable $ rows orgToPandocTable :: OrgTable -> Inlines @@ -699,11 +685,11 @@ tableRows = try $ many (tableAlignRow <|> tableHline <|> tableContentRow) tableContentRow :: OrgParser OrgTableRow tableContentRow = try $ - OrgContentRow . sequence <$> (tableStart *> manyTill tableContentCell newline) + OrgContentRow <$> (tableStart *> manyTill tableContentCell newline) -tableContentCell :: OrgParser (F Blocks) +tableContentCell :: OrgParser Blocks tableContentCell = try $ - fmap B.plain . trimInlinesF . mconcat <$> many1Till inline endOfCell + B.plain . trimInlines . mconcat <$> many1Till inline endOfCell endOfCell :: OrgParser Char endOfCell = try $ char '|' <|> lookAhead newline @@ -735,8 +721,8 @@ tableHline = try $ OrgHlineRow <$ (tableStart *> char '-' *> anyLine) rowsToTable :: [OrgTableRow] - -> F OrgTable -rowsToTable = foldM (flip rowToContent) zeroTable + -> OrgTable +rowsToTable = foldl' (flip rowToContent) zeroTable where zeroTable = OrgTable 0 mempty mempty mempty normalizeTable :: OrgTable @@ -755,45 +741,43 @@ normalizeTable (OrgTable cols aligns heads lns) = -- line as a header. All other horizontal lines are discarded. rowToContent :: OrgTableRow -> OrgTable - -> F OrgTable + -> OrgTable rowToContent OrgHlineRow t = maybeBodyToHeader t -rowToContent (OrgAlignRow as) t = setLongestRow as =<< setAligns as t -rowToContent (OrgContentRow rf) t = do - rs <- rf - setLongestRow rs =<< appendToBody rs t +rowToContent (OrgAlignRow as) t = setLongestRow as . setAligns as $ t +rowToContent (OrgContentRow rf) t = setLongestRow rf . appendToBody rf $ t setLongestRow :: [a] -> OrgTable - -> F OrgTable + -> OrgTable setLongestRow rs t = - return t{ orgTableColumns = max (length rs) (orgTableColumns t) } + t{ orgTableColumns = max (length rs) (orgTableColumns t) } maybeBodyToHeader :: OrgTable - -> F OrgTable + -> OrgTable maybeBodyToHeader t = case t of OrgTable{ orgTableHeader = [], orgTableRows = b:[] } -> - return t{ orgTableHeader = b , orgTableRows = [] } - _ -> return t + t{ orgTableHeader = b , orgTableRows = [] } + _ -> t appendToBody :: [Blocks] -> OrgTable - -> F OrgTable -appendToBody r t = return t{ orgTableRows = orgTableRows t ++ [r] } + -> OrgTable +appendToBody r t = t{ orgTableRows = orgTableRows t ++ [r] } setAligns :: [Alignment] -> OrgTable - -> F OrgTable -setAligns aligns t = return $ t{ orgTableAlignments = aligns } + -> OrgTable +setAligns aligns t = t{ orgTableAlignments = aligns } -- -- LaTeX fragments -- -latexFragment :: OrgParser (F Blocks) +latexFragment :: OrgParser Blocks latexFragment = try $ do envName <- latexEnvStart content <- mconcat <$> manyTill anyLineNewline (latexEnd envName) - return . return $ B.rawBlock "latex" (content `inLatexEnv` envName) + return $ B.rawBlock "latex" (content `inLatexEnv` envName) where c `inLatexEnv` e = mconcat [ "\\begin{", e, "}\n" , c @@ -823,7 +807,7 @@ latexEnvName = try $ do -- -- Footnote defintions -- -noteBlock :: OrgParser (F Blocks) +noteBlock :: OrgParser Blocks noteBlock = try $ do ref <- noteMarker <* skipSpaces content <- mconcat <$> blocksTillHeaderOrNote @@ -835,37 +819,37 @@ noteBlock = try $ do <|> () <$ lookAhead headerStart) -- Paragraphs or Plain text -paraOrPlain :: OrgParser (F Blocks) +paraOrPlain :: OrgParser Blocks paraOrPlain = try $ do ils <- parseInlines nl <- option False (newline >> return True) try (guard nl >> notFollowedBy (orderedListStart <|> bulletListStart) >> - return (B.para <$> ils)) - <|> (return (B.plain <$> ils)) + (return $ B.para ils)) + <|> (return $ B.plain ils) -inlinesTillNewline :: OrgParser (F Inlines) -inlinesTillNewline = trimInlinesF . mconcat <$> manyTill inline newline +inlinesTillNewline :: OrgParser Inlines +inlinesTillNewline = trimInlines . mconcat <$> manyTill inline newline -- -- list blocks -- -list :: OrgParser (F Blocks) +list :: OrgParser Blocks list = choice [ definitionList, bulletList, orderedList ] <?> "list" -definitionList :: OrgParser (F Blocks) +definitionList :: OrgParser Blocks definitionList = try $ do n <- lookAhead (bulletListStart' Nothing) - fmap B.definitionList . fmap compactify'DL . sequence + B.definitionList . compactify'DL <$> many1 (definitionListItem $ bulletListStart' (Just n)) -bulletList :: OrgParser (F Blocks) +bulletList :: OrgParser Blocks bulletList = try $ do n <- lookAhead (bulletListStart' Nothing) - fmap B.bulletList . fmap compactify' . sequence + B.bulletList . compactify' <$> many1 (listItem (bulletListStart' $ Just n)) -orderedList :: OrgParser (F Blocks) -orderedList = fmap B.orderedList . fmap compactify' . sequence +orderedList :: OrgParser Blocks +orderedList = B.orderedList . compactify' <$> many1 (listItem orderedListStart) genericListStart :: OrgParser String @@ -902,7 +886,7 @@ orderedListStart = genericListStart orderedListMarker where orderedListMarker = mappend <$> many1 digit <*> (pure <$> oneOf ".)") definitionListItem :: OrgParser Int - -> OrgParser (F (Inlines, [Blocks])) + -> OrgParser (Inlines, [Blocks]) definitionListItem parseMarkerGetLength = try $ do markerLength <- parseMarkerGetLength term <- manyTill (noneOf "\n\r") (try $ string "::") @@ -911,12 +895,12 @@ definitionListItem parseMarkerGetLength = try $ do cont <- concat <$> many (listContinuation markerLength) term' <- parseFromString parseInlines term contents' <- parseFromString parseBlocks $ line1 ++ blank ++ cont - return $ (,) <$> term' <*> fmap (:[]) contents' + return (term', [contents']) -- parse raw text for one list item, excluding start marker and continuations listItem :: OrgParser Int - -> OrgParser (F Blocks) + -> OrgParser Blocks listItem start = try $ do markerLength <- try start firstLine <- anyLineNewline @@ -942,7 +926,7 @@ anyLineNewline = (++ "\n") <$> anyLine -- inline -- -inline :: OrgParser (F Inlines) +inline :: OrgParser Inlines inline = choice [ whitespace , linebreak @@ -968,31 +952,31 @@ inline = ] <* (guard =<< newlinesCountWithinLimits) <?> "inline" -parseInlines :: OrgParser (F Inlines) -parseInlines = trimInlinesF . mconcat <$> many1 inline +parseInlines :: OrgParser Inlines +parseInlines = trimInlines . mconcat <$> many1 inline -- treat these as potentially non-text when parsing inline: specialChars :: [Char] specialChars = "\"$'()*+-,./:<=>[\\]^_{|}~" -whitespace :: OrgParser (F Inlines) -whitespace = pure B.space <$ skipMany1 spaceChar +whitespace :: OrgParser Inlines +whitespace = B.space <$ skipMany1 spaceChar <* updateLastPreCharPos <* updateLastForbiddenCharPos <?> "whitespace" -linebreak :: OrgParser (F Inlines) -linebreak = try $ pure B.linebreak <$ string "\\\\" <* skipSpaces <* newline +linebreak :: OrgParser Inlines +linebreak = try $ B.linebreak <$ string "\\\\" <* skipSpaces <* newline -str :: OrgParser (F Inlines) -str = return . B.str <$> many1 (noneOf $ specialChars ++ "\n\r ") +str :: OrgParser Inlines +str = B.str <$> many1 (noneOf $ specialChars ++ "\n\r ") <* updateLastStrPos -- | An endline character that can be treated as a space, not a structural -- break. This should reflect the values of the Emacs variable -- @org-element-pagaraph-separate@. -endline :: OrgParser (F Inlines) +endline :: OrgParser Inlines endline = try $ do newline notFollowedBy blankline @@ -1010,77 +994,72 @@ endline = try $ do decEmphasisNewlinesCount guard =<< newlinesCountWithinLimits updateLastPreCharPos - return . return $ B.space + return $ B.space -cite :: OrgParser (F Inlines) +cite :: OrgParser Inlines cite = try $ do guardEnabled Ext_citations (cs, raw) <- withRaw normalCite - return $ (flip B.cite (B.text raw)) <$> cs + return $ flip B.cite (B.text raw) cs -normalCite :: OrgParser (F [Citation]) +normalCite :: OrgParser [Citation] normalCite = try $ char '[' *> skipSpaces *> citeList <* skipSpaces <* char ']' -citeList :: OrgParser (F [Citation]) -citeList = sequence <$> sepBy1 citation (try $ char ';' *> skipSpaces) +citeList :: OrgParser [Citation] +citeList = sepBy1 citation (try $ char ';' *> skipSpaces) -citation :: OrgParser (F Citation) +citation :: OrgParser Citation citation = try $ do pref <- prefix (suppress_author, key) <- citeKey suff <- suffix - return $ do - x <- pref - y <- suff - return $ Citation{ citationId = key - , citationPrefix = B.toList x - , citationSuffix = B.toList y - , citationMode = if suppress_author - then SuppressAuthor - else NormalCitation - , citationNoteNum = 0 - , citationHash = 0 - } + return $ Citation{ citationId = key + , citationPrefix = B.toList pref + , citationSuffix = B.toList suff + , citationMode = if suppress_author + then SuppressAuthor + else NormalCitation + , citationNoteNum = 0 + , citationHash = 0 + } where - prefix = trimInlinesF . mconcat <$> + prefix = trimInlines . mconcat <$> manyTill inline (char ']' <|> (']' <$ lookAhead citeKey)) suffix = try $ do hasSpace <- option False (notFollowedBy nonspaceChar >> return True) skipSpaces - rest <- trimInlinesF . mconcat <$> + rest <- trimInlines . mconcat <$> many (notFollowedBy (oneOf ";]") *> inline) - return $ if hasSpace - then (B.space <>) <$> rest - else rest + return $ + if hasSpace + then B.space <> rest + else rest -footnote :: OrgParser (F Inlines) +footnote :: OrgParser Inlines footnote = try $ inlineNote <|> referencedNote -inlineNote :: OrgParser (F Inlines) +inlineNote :: OrgParser Inlines inlineNote = try $ do string "[fn:" ref <- many alphaNum char ':' - note <- fmap B.para . trimInlinesF . mconcat <$> many1Till inline (char ']') + note <- B.para . trimInlines . mconcat <$> many1Till inline (char ']') when (not $ null ref) $ addToNotesTable ("fn:" ++ ref, note) - return $ B.note <$> note + return $ B.note note -referencedNote :: OrgParser (F Inlines) +referencedNote :: OrgParser Inlines referencedNote = try $ do ref <- noteMarker - return $ do - notes <- asksF orgStateNotes' + notes <- asks orgStateNotes' + return $ case lookup ref notes of - Nothing -> return $ B.str $ "[" ++ ref ++ "]" - Just contents -> do - st <- askF - let contents' = runF contents st{ orgStateNotes' = [] } - return $ B.note contents' + Just contents -> B.note contents + Nothing -> B.str $ "[" ++ ref ++ "]" noteMarker :: OrgParser String noteMarker = try $ do @@ -1090,37 +1069,37 @@ noteMarker = try $ do <*> many1Till (noneOf "\n\r\t ") (char ']') ] -linkOrImage :: OrgParser (F Inlines) +linkOrImage :: OrgParser Inlines linkOrImage = explicitOrImageLink <|> selflinkOrImage <|> angleLink <|> plainLink <?> "link or image" -explicitOrImageLink :: OrgParser (F Inlines) +explicitOrImageLink :: OrgParser Inlines explicitOrImageLink = try $ do char '[' - srcF <- applyCustomLinkFormat =<< possiblyEmptyLinkTarget + src <- applyCustomLinkFormat =<< possiblyEmptyLinkTarget title <- enclosedRaw (char '[') (char ']') title' <- parseFromString (mconcat <$> many inline) title char ']' - return $ do - src <- srcF - if isImageFilename src && isImageFilename title - then pure $ B.link src "" $ B.image title mempty mempty - else linkToInlinesF src =<< title' + alt <- internalLink src title' + return $ + (if isImageFilename src && isImageFilename title + then B.link src "" $ B.image title mempty mempty + else fromMaybe alt (linkToInlines src title')) -selflinkOrImage :: OrgParser (F Inlines) +selflinkOrImage :: OrgParser Inlines selflinkOrImage = try $ do src <- char '[' *> linkTarget <* char ']' - return $ linkToInlinesF src (B.str src) + return $ fromMaybe "" (linkToInlines src (B.str src)) -plainLink :: OrgParser (F Inlines) +plainLink :: OrgParser Inlines plainLink = try $ do (orig, src) <- uri - returnF $ B.link src "" (B.str orig) + return $ B.link src "" (B.str orig) -angleLink :: OrgParser (F Inlines) +angleLink :: OrgParser Inlines angleLink = try $ do char '<' link <- plainLink @@ -1136,26 +1115,31 @@ linkTarget = enclosedByPair '[' ']' (noneOf "\n\r[]") possiblyEmptyLinkTarget :: OrgParser String possiblyEmptyLinkTarget = try linkTarget <|> ("" <$ string "[]") -applyCustomLinkFormat :: String -> OrgParser (F String) +applyCustomLinkFormat :: String -> OrgParser String applyCustomLinkFormat link = do let (linkType, rest) = break (== ':') link - return $ do - formatter <- M.lookup linkType <$> asksF orgStateLinkFormatters - return $ maybe link ($ drop 1 rest) formatter + fmts <- ask + return $ + case M.lookup linkType (orgStateLinkFormatters fmts) of + Just v -> (v (drop 1 rest)) + Nothing -> link -- TODO: might be a lot smarter/cleaner to use parsec and ADTs for this kind -- of parsing. -linkToInlinesF :: String -> Inlines -> F Inlines -linkToInlinesF s = +linkToInlines :: String -> Inlines -> Maybe Inlines +linkToInlines = \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 + _ | null s -> Just . B.link "" "" + _ | isAnchor s -> Just . B.link s "" + _ | isImageFilename s -> const . Just $ B.image s "" "" + _ | isFileLink s -> Just . B.link (dropLinkType s) "" + _ | isUri s -> Just . B.link s "" + _ | isAbsoluteFilePath s -> Just . B.link ("file://" ++ s) "" + _ | isRelativeFilePath s -> Just . B.link s "" + _ -> const Nothing + +isAnchor :: String -> Bool +isAnchor s = "#" `isPrefixOf` s isFileLink :: String -> Bool isFileLink s = ("file:" `isPrefixOf` s) && not ("file://" `isPrefixOf` s) @@ -1184,12 +1168,13 @@ isImageFilename filename = imageExtensions = [ "jpeg" , "jpg" , "png" , "gif" , "svg" ] protocols = [ "file", "http", "https" ] -internalLink :: String -> Inlines -> F Inlines +internalLink :: String -> Inlines -> OrgParser Inlines internalLink link title = do - anchorB <- (link `elem`) <$> asksF orgStateAnchorIds - if anchorB - then return $ B.link ('#':link) "" title - else return $ B.emph title + anchorB <- ask + return $ + if link `elem` (orgStateAnchorIds anchorB) + then B.link ('#':link) "" title + else B.emph title -- | Parse an anchor like @<<anchor-id>>@ and return an empty span with -- @anchor-id@ set as id. Legal anchors in org-mode are defined through @@ -1197,11 +1182,11 @@ internalLink link title = do -- @anchor-id@ contains spaces, we are more restrictive in what is accepted as -- an anchor. -anchor :: OrgParser (F Inlines) +anchor :: OrgParser Inlines anchor = try $ do anchorId <- parseAnchor recordAnchorId anchorId - returnF $ B.spanWith (solidify anchorId, [], []) mempty + return $ B.spanWith (solidify anchorId, [], []) mempty where parseAnchor = string "<<" *> many1 (noneOf "\t\n\r<>\"' ") @@ -1219,7 +1204,7 @@ solidify = map replaceSpecialChar | otherwise = '-' -- | Parses an inline code block and marks it as an babel block. -inlineCodeBlock :: OrgParser (F Inlines) +inlineCodeBlock :: OrgParser Inlines inlineCodeBlock = try $ do string "src_" lang <- many1 orgArgWordChar @@ -1227,7 +1212,7 @@ inlineCodeBlock = try $ do inlineCode <- enclosedByPair '{' '}' (noneOf "\n\r") let attrClasses = [translateLang lang, rundocBlockClass] let attrKeyVal = map toRundocAttrib (("language", lang) : opts) - returnF $ B.codeWith ("", attrClasses, attrKeyVal) inlineCode + return $ B.codeWith ("", attrClasses, attrKeyVal) inlineCode enclosedByPair :: Char -- ^ opening char -> Char -- ^ closing char @@ -1235,50 +1220,50 @@ enclosedByPair :: Char -- ^ opening char -> OrgParser [a] enclosedByPair s e p = char s *> many1Till p (char e) -emph :: OrgParser (F Inlines) -emph = fmap B.emph <$> emphasisBetween '/' +emph :: OrgParser Inlines +emph = B.emph <$> emphasisBetween '/' -strong :: OrgParser (F Inlines) -strong = fmap B.strong <$> emphasisBetween '*' +strong :: OrgParser Inlines +strong = B.strong <$> emphasisBetween '*' -strikeout :: OrgParser (F Inlines) -strikeout = fmap B.strikeout <$> emphasisBetween '+' +strikeout :: OrgParser Inlines +strikeout = B.strikeout <$> emphasisBetween '+' -- There is no underline, so we use strong instead. -underline :: OrgParser (F Inlines) -underline = fmap B.strong <$> emphasisBetween '_' +underline :: OrgParser Inlines +underline = B.strong <$> emphasisBetween '_' -verbatim :: OrgParser (F Inlines) -verbatim = return . B.code <$> verbatimBetween '=' +verbatim :: OrgParser Inlines +verbatim = B.code <$> verbatimBetween '=' -code :: OrgParser (F Inlines) -code = return . B.code <$> verbatimBetween '~' +code :: OrgParser Inlines +code = B.code <$> verbatimBetween '~' -subscript :: OrgParser (F Inlines) -subscript = fmap B.subscript <$> try (char '_' *> subOrSuperExpr) +subscript :: OrgParser Inlines +subscript = B.subscript <$> try (char '_' *> subOrSuperExpr) -superscript :: OrgParser (F Inlines) -superscript = fmap B.superscript <$> try (char '^' *> subOrSuperExpr) +superscript :: OrgParser Inlines +superscript = B.superscript <$> try (char '^' *> subOrSuperExpr) -math :: OrgParser (F Inlines) -math = return . B.math <$> choice [ math1CharBetween '$' +math :: OrgParser Inlines +math = B.math <$> choice [ math1CharBetween '$' , mathStringBetween '$' , rawMathBetween "\\(" "\\)" ] -displayMath :: OrgParser (F Inlines) -displayMath = return . B.displayMath <$> choice [ rawMathBetween "\\[" "\\]" +displayMath :: OrgParser Inlines +displayMath = B.displayMath <$> choice [ rawMathBetween "\\[" "\\]" , rawMathBetween "$$" "$$" ] -symbol :: OrgParser (F Inlines) -symbol = return . B.str . (: "") <$> (oneOf specialChars >>= updatePositions) +symbol :: OrgParser Inlines +symbol = B.str . (: "") <$> (oneOf specialChars >>= updatePositions) where updatePositions c = do when (c `elem` emphasisPreChars) updateLastPreCharPos when (c `elem` emphasisForbiddenBorderChars) updateLastForbiddenCharPos return c emphasisBetween :: Char - -> OrgParser (F Inlines) + -> OrgParser Inlines emphasisBetween c = try $ do startEmphasisNewlinesCounting emphasisAllowedNewlines res <- enclosedInlines (emphasisStart c) (emphasisEnd c) @@ -1355,9 +1340,9 @@ mathEnd c = try $ do enclosedInlines :: OrgParser a -> OrgParser b - -> OrgParser (F Inlines) + -> OrgParser Inlines enclosedInlines start end = try $ - trimInlinesF . mconcat <$> enclosed start end inline + trimInlines . mconcat <$> enclosed start end inline enclosedRaw :: OrgParser a -> OrgParser b @@ -1436,7 +1421,7 @@ notAfterForbiddenBorderChar = do return $ lastFBCPos /= Just pos -- | Read a sub- or superscript expression -subOrSuperExpr :: OrgParser (F Inlines) +subOrSuperExpr :: OrgParser Inlines subOrSuperExpr = try $ choice [ id <$> charsInBalanced '{' '}' (noneOf "\n\r") , enclosing ('(', ')') <$> charsInBalanced '(' ')' (noneOf "\n\r") @@ -1451,10 +1436,10 @@ simpleSubOrSuperString = try $ <*> many1 alphaNum ] -inlineLaTeX :: OrgParser (F Inlines) +inlineLaTeX :: OrgParser Inlines inlineLaTeX = try $ do cmd <- inlineLaTeXCommand - maybe mzero returnF $ + maybe mzero return $ parseAsMath cmd `mplus` parseAsMathMLSym cmd `mplus` parseAsInlineLaTeX cmd where parseAsMath :: String -> Maybe Inlines |