diff options
| -rw-r--r-- | src/Text/Pandoc/Readers/HTML.hs | 17 |
1 files changed, 12 insertions, 5 deletions
diff --git a/src/Text/Pandoc/Readers/HTML.hs b/src/Text/Pandoc/Readers/HTML.hs index 02ff07e73..b6338aeff 100644 --- a/src/Text/Pandoc/Readers/HTML.hs +++ b/src/Text/Pandoc/Readers/HTML.hs @@ -1,4 +1,5 @@ -{-# LANGUAGE FlexibleContexts, FlexibleInstances, MultiParamTypeClasses #-} +{-# LANGUAGE FlexibleContexts, FlexibleInstances, MultiParamTypeClasses, +ViewPatterns#-} {- Copyright (C) 2006-2014 John MacFarlane <jgm@berkeley.edu> @@ -62,15 +63,18 @@ import Text.TeXMath (readMathML, writeTeX) import Data.Default (Default (..), def) import Control.Monad.Reader (Reader,ask, asks, local, runReader) +import Text.Pandoc.Error + +import Text.Parsec.Error + -- | Convert HTML-formatted string to 'Pandoc' document. readHtml :: ReaderOptions -- ^ Reader options -> String -- ^ String to parse (assumes @'\n'@ line endings) - -> Pandoc + -> Either PandocError Pandoc readHtml opts inp = - case flip runReader def $ runParserT parseDoc (HTMLState def{ stateOptions = opts } []) "source" tags of - Left err' -> error $ "\nError at " ++ show err' - Right result -> result + mapLeft (ParseFailure . getError) . flip runReader def $ + runParserT parseDoc (HTMLState def{ stateOptions = opts } []) "source" tags where tags = stripPrefixes . canonicalizeTags $ parseTagsOptions parseOptions{ optTagPosition = True } inp parseDoc = do @@ -78,6 +82,9 @@ readHtml opts inp = meta <- stateMeta . parserState <$> getState bs' <- replaceNotes (B.toList blocks) return $ Pandoc meta bs' + getError (errorMessages -> ms) = case ms of + [] -> "" + (m:_) -> messageString m replaceNotes :: [Block] -> TagParser [Block] replaceNotes = walkM replaceNotes' |