diff options
Diffstat (limited to 'src/Text/Pandoc/Writers/CslJson.hs')
| -rw-r--r-- | src/Text/Pandoc/Writers/CslJson.hs | 7 |
1 files changed, 4 insertions, 3 deletions
diff --git a/src/Text/Pandoc/Writers/CslJson.hs b/src/Text/Pandoc/Writers/CslJson.hs index a10def95e..395335667 100644 --- a/src/Text/Pandoc/Writers/CslJson.hs +++ b/src/Text/Pandoc/Writers/CslJson.hs @@ -34,15 +34,16 @@ import Control.Monad.Identity import Citeproc.Locale (getLocale) import Citeproc.CslJson import Text.Pandoc.Options (WriterOptions) -import Data.Maybe (mapMaybe) +import Data.Maybe (mapMaybe, fromMaybe) import Data.Aeson.Encode.Pretty (Config (..), Indent (Spaces), NumberFormat (Generic), defConfig, encodePretty') writeCslJson :: PandocMonad m => WriterOptions -> Pandoc -> m Text writeCslJson _opts (Pandoc meta _) = do - let lang = maybe (Lang "en" (Just "US")) parseLang - (lookupMeta "lang" meta >>= metaValueToText) + let lang = fromMaybe (Lang "en" Nothing (Just "US") [] [] []) + (lookupMeta "lang" meta >>= metaValueToText >>= + either (const Nothing) Just . parseLang) locale <- case getLocale lang of Left e -> throwError $ PandocCiteprocError e Right l -> return l |