diff options
Diffstat (limited to 'src/Text/Pandoc/Filter.hs')
| -rw-r--r-- | src/Text/Pandoc/Filter.hs | 30 |
1 files changed, 17 insertions, 13 deletions
diff --git a/src/Text/Pandoc/Filter.hs b/src/Text/Pandoc/Filter.hs index 1209ceeb7..84015ed92 100644 --- a/src/Text/Pandoc/Filter.hs +++ b/src/Text/Pandoc/Filter.hs @@ -19,10 +19,9 @@ module Text.Pandoc.Filter ) where import System.CPUTime (getCPUTime) -import Data.Aeson.TH (deriveJSON, defaultOptions) +import Data.Aeson import GHC.Generics (Generic) -import Text.Pandoc.Class.PandocIO (PandocIO) -import Text.Pandoc.Class.PandocMonad (report, getVerbosity) +import Text.Pandoc.Class (report, getVerbosity, PandocMonad) import Text.Pandoc.Definition (Pandoc) import Text.Pandoc.Options (ReaderOptions) import Text.Pandoc.Logging @@ -30,7 +29,6 @@ import Text.Pandoc.Citeproc (processCitations) import qualified Text.Pandoc.Filter.JSON as JSONFilter import qualified Text.Pandoc.Filter.Lua as LuaFilter import qualified Text.Pandoc.Filter.Path as Path -import Data.YAML import qualified Data.Text as T import System.FilePath (takeExtension) import Control.Applicative ((<|>)) @@ -43,9 +41,9 @@ data Filter = LuaFilter FilePath | CiteprocFilter -- built-in citeproc deriving (Show, Generic) -instance FromYAML Filter where - parseYAML node = - (withMap "Filter" $ \m -> do +instance FromJSON Filter where + parseJSON node = + (withObject "Filter" $ \m -> do ty <- m .: "type" fp <- m .:? "path" let missingPath = fail $ "Expected 'path' for filter of type " ++ show ty @@ -56,7 +54,7 @@ instance FromYAML Filter where "json" -> filterWithPath JSONFilter fp _ -> fail $ "Unknown filter type " ++ show (ty :: T.Text)) node <|> - (withStr "Filter" $ \t -> do + (withText "Filter" $ \t -> do let fp = T.unpack t if fp == "citeproc" then return CiteprocFilter @@ -65,12 +63,20 @@ instance FromYAML Filter where ".lua" -> LuaFilter fp _ -> JSONFilter fp) node +instance ToJSON Filter where + toJSON CiteprocFilter = object [ "type" .= String "citeproc" ] + toJSON (LuaFilter fp) = object [ "type" .= String "lua", + "path" .= String (T.pack fp) ] + toJSON (JSONFilter fp) = object [ "type" .= String "json", + "path" .= String (T.pack fp) ] + -- | Modify the given document using a filter. -applyFilters :: ReaderOptions +applyFilters :: (PandocMonad m, MonadIO m) + => ReaderOptions -> [Filter] -> [String] -> Pandoc - -> PandocIO Pandoc + -> m Pandoc applyFilters ropts filters args d = do expandedFilters <- mapM expandFilterPath filters foldM applyFilter d expandedFilters @@ -92,9 +98,7 @@ applyFilters ropts filters args d = do toMilliseconds picoseconds = picoseconds `div` 1000000000 -- | Expand paths of filters, searching the data directory. -expandFilterPath :: Filter -> PandocIO Filter +expandFilterPath :: (PandocMonad m, MonadIO m) => Filter -> m Filter expandFilterPath (LuaFilter fp) = LuaFilter <$> Path.expandFilterPath fp expandFilterPath (JSONFilter fp) = JSONFilter <$> Path.expandFilterPath fp expandFilterPath CiteprocFilter = return CiteprocFilter - -$(deriveJSON defaultOptions ''Filter) |