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-rw-r--r--src/Text/Pandoc/Lua.hs31
-rw-r--r--src/Text/Pandoc/Lua/PandocModule.hs74
-rw-r--r--src/Text/Pandoc/Lua/StackInstances.hs75
3 files changed, 150 insertions, 30 deletions
diff --git a/src/Text/Pandoc/Lua.hs b/src/Text/Pandoc/Lua.hs
index 6fa6b2020..d754b43b8 100644
--- a/src/Text/Pandoc/Lua.hs
+++ b/src/Text/Pandoc/Lua.hs
@@ -15,11 +15,7 @@ You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
-}
-{-# LANGUAGE FlexibleContexts #-}
-{-# LANGUAGE LambdaCase #-}
{-# LANGUAGE OverloadedStrings #-}
-{-# LANGUAGE ScopedTypeVariables #-}
-{-# OPTIONS_GHC -fno-warn-orphans #-}
{- |
Module : Text.Pandoc.Lua
Copyright : Copyright © 2017 Albert Krewinkel
@@ -34,24 +30,23 @@ module Text.Pandoc.Lua ( runLuaFilter ) where
import Control.Monad ( (>=>), when )
import Control.Monad.Trans ( MonadIO(..) )
-import Data.Aeson ( FromJSON(..), ToJSON(..), Result(..), Value, fromJSON )
import Data.HashMap.Lazy ( HashMap )
import Data.Text ( Text, pack, unpack )
import Data.Text.Encoding ( decodeUtf8 )
import Scripting.Lua ( LuaState, StackValue(..) )
-import Scripting.Lua.Aeson ()
+import Scripting.Lua.Aeson ( newstate )
import Text.Pandoc.Definition ( Block(..), Inline(..), Pandoc(..) )
import Text.Pandoc.Lua.PandocModule
+import Text.Pandoc.Lua.StackInstances ()
import Text.Pandoc.Walk
import qualified Data.HashMap.Lazy as HashMap
import qualified Scripting.Lua as Lua
-import qualified Scripting.Lua as LuaAeson
runLuaFilter :: (MonadIO m)
=> FilePath -> [String] -> Pandoc -> m Pandoc
runLuaFilter filterPath args pd = liftIO $ do
- lua <- LuaAeson.newstate
+ lua <- newstate
Lua.openlibs lua
Lua.newtable lua
Lua.setglobal lua "PANDOC_FILTER_FUNCTIONS" -- hack, store functions here
@@ -204,23 +199,3 @@ isLuaFunction lua fnName = do
res <- Lua.isfunction lua (-1)
Lua.pop lua (-1)
return res
-
-maybeFromJson :: (FromJSON a) => Maybe Value -> Maybe a
-maybeFromJson mv = fromJSON <$> mv >>= \case
- Success x -> Just x
- _ -> Nothing
-
-instance StackValue Pandoc where
- push lua = Lua.push lua . toJSON
- peek lua i = maybeFromJson <$> peek lua i
- valuetype _ = Lua.TTABLE
-
-instance StackValue Block where
- push lua = Lua.push lua . toJSON
- peek lua i = maybeFromJson <$> peek lua i
- valuetype _ = Lua.TTABLE
-
-instance StackValue Inline where
- push lua = Lua.push lua . toJSON
- peek lua i = maybeFromJson <$> peek lua i
- valuetype _ = Lua.TTABLE
diff --git a/src/Text/Pandoc/Lua/PandocModule.hs b/src/Text/Pandoc/Lua/PandocModule.hs
index 87d1fa6b9..d0c78f562 100644
--- a/src/Text/Pandoc/Lua/PandocModule.hs
+++ b/src/Text/Pandoc/Lua/PandocModule.hs
@@ -28,11 +28,25 @@ Pandoc module for lua.
module Text.Pandoc.Lua.PandocModule ( pushPandocModule ) where
import Data.ByteString.Char8 ( unpack )
-import Scripting.Lua ( LuaState, call)
+import Data.Default ( Default(..) )
+import Scripting.Lua ( LuaState, call, newtable, push, pushhsfunction, rawset)
+import Text.Pandoc.Class hiding ( readDataFile )
+import Text.Pandoc.Definition ( Pandoc(..), Block(..) )
import Text.Pandoc.Lua.Compat ( loadstring )
+import Text.Pandoc.Lua.StackInstances ()
+import Text.Pandoc.Readers.DocBook ( readDocBook )
+import Text.Pandoc.Readers.HTML ( readHtml )
+import Text.Pandoc.Readers.LaTeX ( readLaTeX )
+import Text.Pandoc.Readers.Native ( readNative )
+import Text.Pandoc.Readers.Markdown ( readMarkdown )
+import Text.Pandoc.Readers.MediaWiki ( readMediaWiki )
+import Text.Pandoc.Readers.Org ( readOrg )
+import Text.Pandoc.Readers.RST ( readRST )
+import Text.Pandoc.Readers.Textile ( readTextile )
+import Text.Pandoc.Readers.TWiki ( readTWiki )
+import Text.Pandoc.Readers.Txt2Tags ( readTxt2Tags )
import Text.Pandoc.Shared ( readDataFile )
-
-- | Push the "pandoc" on the lua stack.
pushPandocModule :: LuaState -> IO ()
pushPandocModule lua = do
@@ -42,7 +56,63 @@ pushPandocModule lua = do
then return ()
else do
call lua 0 1
+ push lua "reader"
+ pushReadersModule lua readers
+ rawset lua (-3)
+
+readers :: [(String, String -> PandocIO Pandoc)]
+readers =
+ [ ("docbook", readDocBook def)
+ , ("html", readHtml def)
+ , ("latex", readLaTeX def)
+ , ("native", readNative def)
+ , ("markdown", readMarkdown def)
+ , ("mediawiki", readMediaWiki def)
+ , ("org", readOrg def)
+ , ("rst", readRST def)
+ , ("textile", readTextile def)
+ , ("twiki", readTWiki def)
+ , ("txt2tags", readTxt2Tags def)
+ ]
-- | Get the string representation of the pandoc module
pandocModuleScript :: IO String
pandocModuleScript = unpack <$> readDataFile Nothing "pandoc.lua"
+
+-- | Push a lua table containing readers of the given formats.
+pushReadersModule :: LuaState
+ -> [(String, String -> PandocIO Pandoc)]
+ -> IO ()
+pushReadersModule lua readerFns = do
+ newtable lua
+ mapM_ (uncurry $ addReaderTable) readerFns
+ where
+ addReaderTable :: String
+ -> (String -> PandocIO Pandoc)
+ -> IO ()
+ addReaderTable formatName readerFn = do
+ let readDoc :: String -> IO Pandoc
+ readDoc s = do
+ res <- runIO $ readerFn s
+ case res of
+ (Left x) -> error (show x)
+ (Right x) -> return x
+ let readBlock :: String -> IO Block
+ readBlock s = do
+ Pandoc _ blks <- readDoc s
+ return $ case blks of
+ x:_ -> x
+ _ -> Null
+ -- Push table containing all functions for this format
+ push lua formatName
+ newtable lua
+ -- set document-reading function
+ push lua "read_doc"
+ pushhsfunction lua readDoc
+ rawset lua (-3)
+ -- set block-reading function
+ push lua "read_block"
+ pushhsfunction lua readBlock
+ rawset lua (-3)
+ -- store table in readers module
+ rawset lua (-3)
diff --git a/src/Text/Pandoc/Lua/StackInstances.hs b/src/Text/Pandoc/Lua/StackInstances.hs
new file mode 100644
index 000000000..0c9addc23
--- /dev/null
+++ b/src/Text/Pandoc/Lua/StackInstances.hs
@@ -0,0 +1,75 @@
+{-
+Copyright © 2012-2015 John MacFarlane <jgm@berkeley.edu>
+ 2017 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
+the Free Software Foundation; either version 2 of the License, or
+(at your option) any later version.
+
+This program is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with this program; if not, write to the Free Software
+Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+-}
+{-# LANGUAGE CPP #-}
+{-# LANGUAGE FlexibleInstances #-}
+{-# LANGUAGE LambdaCase #-}
+#if !MIN_VERSION_base(4,8,0)
+{-# LANGUAGE OverlappingInstances #-}
+#endif
+{-# OPTIONS_GHC -fno-warn-orphans #-}
+{- |
+ Module : Text.Pandoc.Lua.StackInstances
+ Copyright : Copyright © 2017 Albert Krewinkel
+ License : GNU GPL, version 2 or above
+
+ Maintainer : Albert Krewinkel <tarleb+pandoc@moltkeplatz.de>
+ Stability : alpha
+
+StackValue instances for pandoc types.
+-}
+module Text.Pandoc.Lua.StackInstances () where
+
+import Data.Aeson ( FromJSON(..), ToJSON(..), Result(..), Value, fromJSON )
+import Scripting.Lua ( StackValue(..) )
+import Scripting.Lua.Aeson ()
+import Text.Pandoc.Definition ( Block(..), Inline(..), Pandoc(..) )
+
+import qualified Scripting.Lua as Lua
+import qualified Text.Pandoc.UTF8 as UTF8
+
+maybeFromJson :: (FromJSON a) => Maybe Value -> Maybe a
+maybeFromJson mv = fromJSON <$> mv >>= \case
+ Success x -> Just x
+ _ -> Nothing
+
+instance StackValue Pandoc where
+ push lua = Lua.push lua . toJSON
+ peek lua i = maybeFromJson <$> peek lua i
+ valuetype _ = Lua.TTABLE
+
+instance StackValue Block where
+ push lua = Lua.push lua . toJSON
+ peek lua i = maybeFromJson <$> peek lua i
+ valuetype _ = Lua.TTABLE
+
+instance StackValue Inline where
+ push lua = Lua.push lua . toJSON
+ peek lua i = maybeFromJson <$> peek lua i
+ valuetype _ = Lua.TTABLE
+
+#if MIN_VERSION_base(4,8,0)
+instance {-# OVERLAPS #-} StackValue [Char] where
+#else
+instance StackValue [Char] where
+#endif
+ push lua cs = Lua.push lua (UTF8.fromString cs)
+ peek lua i = do
+ res <- Lua.peek lua i
+ return $ UTF8.toString `fmap` res
+ valuetype _ = Lua.TSTRING
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-01 03:08:02 +0000