diff options
Diffstat (limited to 'src/Text/Pandoc')
| -rw-r--r-- | src/Text/Pandoc/Readers/Muse.hs | 140 |
1 files changed, 65 insertions, 75 deletions
diff --git a/src/Text/Pandoc/Readers/Muse.hs b/src/Text/Pandoc/Readers/Muse.hs index de7d629bd..abc194769 100644 --- a/src/Text/Pandoc/Readers/Muse.hs +++ b/src/Text/Pandoc/Readers/Muse.hs @@ -42,7 +42,8 @@ module Text.Pandoc.Readers.Muse (readMuse) where import Control.Monad import Control.Monad.Except (throwError) import Data.Char (isLetter) -import Data.List (stripPrefix) +import Data.List (stripPrefix, intercalate) +import Data.List.Split (splitOn) import qualified Data.Map as M import Data.Maybe (fromMaybe) import Data.Text (Text, unpack) @@ -187,17 +188,19 @@ directive = do -- block parsers -- -block :: PandocMonad m => MuseParser m (F Blocks) -block = do - res <- mempty <$ skipMany1 blankline - <|> blockElements - <|> para - skipMany blankline +parseBlock :: PandocMonad m => MuseParser m (F Blocks) +parseBlock = do + res <- blockElements <|> para + optionMaybe blankline trace (take 60 $ show $ B.toList $ runF res defaultParserState) return res +block :: PandocMonad m => MuseParser m (F Blocks) +block = parseBlock <* skipMany blankline + blockElements :: PandocMonad m => MuseParser m (F Blocks) -blockElements = choice [ comment +blockElements = choice [ mempty <$ blankline + , comment , separator , header , example @@ -257,15 +260,26 @@ example = try $ do -- in case opening and/or closing tags are on separate lines. chop :: String -> String chop = lchop . rchop - where lchop s = case s of + +lchop :: String -> String +lchop s = case s of '\n':ss -> ss _ -> s - rchop = reverse . lchop . reverse + +rchop :: String -> String +rchop = reverse . lchop . reverse + +dropSpacePrefix :: [String] -> [String] +dropSpacePrefix lns = + map (drop maxIndent) lns + where flns = filter (not . all (== ' ')) lns + maxIndent = if null flns then maximum (map length lns) else length $ takeWhile (== ' ') $ foldl1 commonPrefix flns exampleTag :: PandocMonad m => MuseParser m (F Blocks) -exampleTag = do +exampleTag = try $ do + many spaceChar (attr, contents) <- htmlElement "example" - return $ return $ B.codeBlockWith attr $ chop contents + return $ return $ B.codeBlockWith attr $ rchop $ intercalate "\n" $ dropSpacePrefix $ splitOn "\n" $ lchop contents literal :: PandocMonad m => MuseParser m (F Blocks) literal = do @@ -309,7 +323,7 @@ verseLine = do verseLines :: PandocMonad m => MuseParser m (F Blocks) verseLines = do - optionMaybe blankline -- Skip blankline after opening tag on separate line + --optionMaybe blankline -- Skip blankline after opening tag on separate line lns <- many verseLine lns' <- mapM (parseFromString' (trimInlinesF . mconcat <$> many inline)) lns return $ B.lineBlock <$> sequence lns' @@ -317,7 +331,7 @@ verseLines = do verseTag :: PandocMonad m => MuseParser m (F Blocks) verseTag = do (_, content) <- htmlElement "verse" - parseFromString verseLines content + parseFromString verseLines (intercalate "\n" $ dropSpacePrefix $ splitOn "\n" $ lchop content) commentTag :: PandocMonad m => MuseParser m (F Blocks) commentTag = parseHtmlContent "comment" anyChar >> return mempty @@ -349,7 +363,7 @@ amuseNoteBlock = try $ do guardEnabled Ext_amuse pos <- getPosition ref <- noteMarker <* spaceChar - content <- listItemContents $ 3 + length ref + content <- listItemContents oldnotes <- stateNotes' <$> getState case M.lookup ref oldnotes of Just _ -> logMessage $ DuplicateNoteReference ref pos @@ -399,11 +413,6 @@ lineBlock = try $ do -- lists -- -listLine :: PandocMonad m => Int -> MuseParser m String -listLine markerLength = try $ do - indentWith markerLength - manyTill anyChar eol - withListContext :: PandocMonad m => MuseParser m a -> MuseParser m a withListContext p = do state <- getState @@ -413,66 +422,47 @@ withListContext p = do updateState (\st -> st {stateParserContext = oldContext}) return parsed -listContinuation :: PandocMonad m => Int -> MuseParser m [String] -listContinuation markerLength = try $ do - result <- many1 $ listLine markerLength - blank <- option id ((++ [""]) <$ blankline) - return $ blank result - -listStart :: PandocMonad m => MuseParser m Int -> MuseParser m Int -listStart marker = try $ do - preWhitespace <- length <$> many spaceChar - st <- stateParserContext <$> getState - getPosition >>= \pos -> guard (st == ListItemState || sourceColumn pos /= 1) - markerLength <- marker - void spaceChar <|> eol - return $ preWhitespace + markerLength + 1 - -dropSpacePrefix :: [String] -> [String] -dropSpacePrefix lns = - map (drop maxIndent) lns - where flns = filter (not . all (== ' ')) lns - maxIndent = if null flns then 0 else length $ takeWhile (== ' ') $ foldl1 commonPrefix flns - -listItemContents :: PandocMonad m => Int -> MuseParser m (F Blocks) -listItemContents markerLength = do - firstLine <- manyTill anyChar eol - restLines <- many $ listLine markerLength - blank <- option id ((++ [""]) <$ blankline) - let first = firstLine : blank restLines - rest <- many $ listContinuation markerLength - let allLines = concat (first : rest) - parseFromString (withListContext parseBlocks) $ unlines (dropSpacePrefix allLines) - -listItem :: PandocMonad m => MuseParser m Int -> MuseParser m (F Blocks) -listItem start = try $ do - markerLength <- start - listItemContents markerLength - -bulletListItems :: PandocMonad m => MuseParser m (F [Blocks]) -bulletListItems = sequence <$> many1 (listItem bulletListStart) +listItemContents :: PandocMonad m => MuseParser m (F Blocks) +listItemContents = do + pos <- getPosition + let col = sourceColumn pos - 1 + first <- try $ withListContext parseBlock + rest <- many $ try (skipMany blankline >> indentWith col >> withListContext parseBlock) + return $ mconcat (first : rest) -bulletListStart :: PandocMonad m => MuseParser m Int -bulletListStart = listStart (char '-' >> return 1) +listItem :: PandocMonad m => Int -> MuseParser m () -> MuseParser m (F Blocks) +listItem n p = try $ do + optionMaybe blankline + count n spaceChar + p + void spaceChar <|> lookAhead eol + listItemContents bulletList :: PandocMonad m => MuseParser m (F Blocks) -bulletList = do - listItems <- bulletListItems - return $ B.bulletList <$> listItems - -orderedListStart :: PandocMonad m - => ListNumberStyle - -> ListNumberDelim - -> MuseParser m Int -orderedListStart style delim = listStart (snd <$> withHorizDisplacement (orderedListMarker style delim)) +bulletList = try $ do + many spaceChar + pos <- getPosition + let col = sourceColumn pos + guard $ col /= 1 + char '-' + void spaceChar <|> lookAhead eol + first <- listItemContents + rest <- many $ listItem (col - 1) (void (char '-')) + return $ B.bulletList <$> sequence (first : rest) orderedList :: PandocMonad m => MuseParser m (F Blocks) orderedList = try $ do - p@(_, style, delim) <- lookAhead (many spaceChar *> anyOrderedListMarker <* (eol <|> void spaceChar)) + many spaceChar + pos <- getPosition + let col = sourceColumn pos + guard $ col /= 1 + p@(_, style, delim) <- anyOrderedListMarker guard $ style `elem` [Decimal, LowerAlpha, UpperAlpha, LowerRoman, UpperRoman] guard $ delim == Period - items <- sequence <$> many1 (listItem $ orderedListStart style delim) - return $ B.orderedListWith p <$> items + void spaceChar <|> lookAhead eol + first <- listItemContents + rest <- many $ listItem (col - 1) (void (orderedListMarker style delim)) + return $ B.orderedListWith p <$> sequence (first : rest) definitionListItem :: PandocMonad m => MuseParser m (F (Inlines, [Blocks])) definitionListItem = try $ do @@ -482,7 +472,7 @@ definitionListItem = try $ do string "::" firstLine <- manyTill anyChar eol restLines <- manyTill anyLine endOfListItemElement - let lns = dropWhile (== ' ') firstLine : dropSpacePrefix restLines + let lns = dropWhile (== ' ') firstLine : restLines lineContent <- parseFromString (withListContext parseBlocks) $ unlines lns pure $ do lineContent' <- lineContent term' <- term @@ -501,8 +491,8 @@ definitionListItems = sequence <$> many1 definitionListItem definitionList :: PandocMonad m => MuseParser m (F Blocks) definitionList = do - listItems <- definitionListItems - return $ B.definitionList <$> listItems + items <- definitionListItems + return $ B.definitionList <$> items -- -- tables |