diff options
Diffstat (limited to 'src')
-rw-r--r-- | src/Text/Pandoc/Readers/Man.hs | 80 |
1 files changed, 63 insertions, 17 deletions
diff --git a/src/Text/Pandoc/Readers/Man.hs b/src/Text/Pandoc/Readers/Man.hs index 9d40b40fb..df740fa73 100644 --- a/src/Text/Pandoc/Readers/Man.hs +++ b/src/Text/Pandoc/Readers/Man.hs @@ -34,11 +34,13 @@ Conversion of man to 'Pandoc' document. module Text.Pandoc.Readers.Man (readMan) where import Prelude +import Data.Char (toLower) import Data.Default (Default) import Control.Monad (liftM, mzero, guard) +import Control.Monad.Trans (lift) import Control.Monad.Except (throwError) import Text.Pandoc.Class (PandocMonad(..), report) -import Data.Maybe (catMaybes) +import Data.Maybe (catMaybes, isJust) import Data.List (intersperse, intercalate) import qualified Data.Text as T import Text.Pandoc.Builder as B @@ -73,20 +75,18 @@ readMan opts txt = do (Foldable.toList . unGroffTokens $ tokenz) either throwError return eitherdoc - where - - readWithMTokens :: PandocMonad m - => ParserT [GroffToken] ManState m a -- ^ parser - -> ManState -- ^ initial state - -> [GroffToken] -- ^ input - -> m (Either PandocError a) - readWithMTokens parser state input = - let leftF = PandocParsecError . intercalate "\n" $ show <$> input - in mapLeft leftF `liftM` runParserT parser state "source" input +readWithMTokens :: PandocMonad m + => ParserT [GroffToken] ManState m a -- ^ parser + -> ManState -- ^ initial state + -> [GroffToken] -- ^ input + -> m (Either PandocError a) +readWithMTokens parser state input = + let leftF = PandocParsecError . intercalate "\n" $ show <$> input + in mapLeft leftF `liftM` runParserT parser state "source" input - mapLeft :: (a -> c) -> Either a b -> Either c b - mapLeft f (Left x) = Left $ f x - mapLeft _ (Right r) = Right r +mapLeft :: (a -> c) -> Either a b -> Either c b +mapLeft f (Left x) = Left $ f x +mapLeft _ (Right r) = Right r parseMan :: PandocMonad m => ManParser m Pandoc @@ -113,9 +113,55 @@ parseTable :: PandocMonad m => ManParser m Blocks parseTable = do let isMTable (MTable{}) = True isMTable _ = False - MTable _opts _aligns _rows pos <- msatisfy isMTable - report $ SkippedContent "TABLE" pos - return $ B.para (B.text "TABLE") + MTable _opts aligns rows pos <- msatisfy isMTable + case aligns of + [as] -> do + let as' = map (columnTypeToAlignment . columnType) as + if all isJust as' + then do + let alignments = catMaybes as' + let (headerRow', bodyRows') = + case rows of + (h:[x]:bs) + | isHrule x -> (h, bs) + _ -> ([], rows) + headerRow <- mapM parseTableCell headerRow' + bodyRows <- mapM (mapM parseTableCell) bodyRows' + return $ B.table mempty (zip alignments (repeat 0.0)) + headerRow bodyRows + else fallback pos + _ -> fallback pos + + where + + parseTableCell ts = do + st <- getState + let ts' = Foldable.toList $ unGroffTokens ts + res <- lift $ readWithMTokens (mconcat <$> many parseBlock <* eof) st ts' + case res of + Left e -> throwError e + Right x -> return x + + isHrule :: GroffTokens -> Bool + isHrule (GroffTokens ss) = + case Foldable.toList ss of + [MLine [RoffStr [c]]] -> c `elem` ['_','-','='] + _ -> False + + fallback pos = do + report $ SkippedContent "TABLE" pos + return $ B.para (B.text "TABLE") + + columnTypeToAlignment :: Char -> Maybe Alignment + columnTypeToAlignment c = + case toLower c of + 'a' -> Just AlignLeft + 'c' -> Just AlignCenter + 'l' -> Just AlignLeft + 'n' -> Just AlignRight + 'r' -> Just AlignRight + _ -> Nothing + parseNewParagraph :: PandocMonad m => ManParser m Blocks parseNewParagraph = do |