diff options
Diffstat (limited to 'src/Text/Pandoc/Lua/Module/Utils.hs')
-rw-r--r-- | src/Text/Pandoc/Lua/Module/Utils.hs | 37 |
1 files changed, 30 insertions, 7 deletions
diff --git a/src/Text/Pandoc/Lua/Module/Utils.hs b/src/Text/Pandoc/Lua/Module/Utils.hs index c0d7397ce..f8eb96dc7 100644 --- a/src/Text/Pandoc/Lua/Module/Utils.hs +++ b/src/Text/Pandoc/Lua/Module/Utils.hs @@ -1,5 +1,5 @@ {- -Copyright © 2017 Albert Krewinkel <tarleb+pandoc@moltkeplatz.de> +Copyright © 2017-2018 Albert Krewinkel <tarleb+pandoc@moltkeplatz.de> This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by @@ -17,7 +17,7 @@ Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA -} {- | Module : Text.Pandoc.Lua.Module.Utils - Copyright : Copyright © 2017 Albert Krewinkel + Copyright : Copyright © 2017-2018 Albert Krewinkel License : GNU GPL, version 2 or above Maintainer : Albert Krewinkel <tarleb+pandoc@moltkeplatz.de> @@ -30,22 +30,26 @@ module Text.Pandoc.Lua.Module.Utils ) where import Control.Applicative ((<|>)) +import Data.Default (def) import Foreign.Lua (FromLuaStack, Lua, LuaInteger, NumResults) +import Text.Pandoc.Class (runIO, setUserDataDir) import Text.Pandoc.Definition (Pandoc, Meta, MetaValue, Block, Inline) import Text.Pandoc.Lua.StackInstances () -import Text.Pandoc.Lua.Util (OrNil (OrNil), addFunction) +import Text.Pandoc.Lua.Util (addFunction, popValue) import qualified Data.Digest.Pure.SHA as SHA import qualified Data.ByteString.Lazy as BSL import qualified Foreign.Lua as Lua +import qualified Text.Pandoc.Filter.JSON as JSONFilter import qualified Text.Pandoc.Shared as Shared -- | Push the "pandoc.utils" module to the lua stack. -pushModule :: Lua NumResults -pushModule = do +pushModule :: Maybe FilePath -> Lua NumResults +pushModule mbDatadir = do Lua.newtable addFunction "hierarchicalize" hierarchicalize addFunction "normalize_date" normalizeDate + addFunction "run_json_filter" (runJSONFilter mbDatadir) addFunction "sha1" sha1 addFunction "stringify" stringify addFunction "to_roman_numeral" toRomanNumeral @@ -59,8 +63,27 @@ hierarchicalize = return . Shared.hierarchicalize -- limit years to the range 1601-9999 (ISO 8601 accepts greater than -- or equal to 1583, but MS Word only accepts dates starting 1601). -- Returns nil instead of a string if the conversion failed. -normalizeDate :: String -> Lua (OrNil String) -normalizeDate = return . OrNil . Shared.normalizeDate +normalizeDate :: String -> Lua (Lua.Optional String) +normalizeDate = return . Lua.Optional . Shared.normalizeDate + +-- | Run a JSON filter on the given document. +runJSONFilter :: Maybe FilePath + -> Pandoc + -> FilePath + -> Lua.Optional [String] + -> Lua NumResults +runJSONFilter mbDatadir doc filterFile optArgs = do + args <- case Lua.fromOptional optArgs of + Just x -> return x + Nothing -> do + Lua.getglobal "FORMAT" + (:[]) <$> popValue + filterRes <- Lua.liftIO . runIO $ do + setUserDataDir mbDatadir + JSONFilter.apply def args filterFile doc + case filterRes of + Left err -> Lua.raiseError (show err) + Right d -> (1 :: NumResults) <$ Lua.push d -- | Calculate the hash of the given contents. sha1 :: BSL.ByteString |