{-# LANGUAGE FlexibleContexts #-}
{-# LANGUAGE OverloadedStrings #-}
{-# LANGUAGE TypeApplications #-}
module Text.Pandoc.Lua.Packages
( installPandocPackageSearcher
) where
import Control.Monad (forM_)
import Text.Pandoc.Error (PandocError)
import Text.Pandoc.Lua.PandocLua (PandocLua, liftPandocLua, loadDefaultModule)
import qualified HsLua as Lua
import qualified HsLua.Module.Path as Path
import qualified HsLua.Module.Text as Text
import qualified Text.Pandoc.Lua.Module.Pandoc as Pandoc
import qualified Text.Pandoc.Lua.Module.MediaBag as MediaBag
import qualified Text.Pandoc.Lua.Module.System as System
import qualified Text.Pandoc.Lua.Module.Types as Types
import qualified Text.Pandoc.Lua.Module.Utils as Utils
installPandocPackageSearcher :: PandocLua ()
installPandocPackageSearcher :: PandocLua ()
installPandocPackageSearcher = LuaE PandocError () -> PandocLua ()
forall a. LuaE PandocError a -> PandocLua a
liftPandocLua (LuaE PandocError () -> PandocLua ())
-> LuaE PandocError () -> PandocLua ()
forall a b. (a -> b) -> a -> b
$ do
Name -> LuaE PandocError ()
forall e. LuaError e => Name -> LuaE e ()
Lua.getglobal' Name
"package.searchers"
LuaE PandocError ()
shiftArray
HaskellFunction PandocError -> LuaE PandocError ()
forall e. LuaError e => HaskellFunction e -> LuaE e ()
Lua.pushHaskellFunction (HaskellFunction PandocError -> LuaE PandocError ())
-> HaskellFunction PandocError -> LuaE PandocError ()
forall a b. (a -> b) -> a -> b
$ (String -> PandocLua NumResults) -> HaskellFunction PandocError
forall e a. Exposable e a => a -> HaskellFunction e
Lua.toHaskellFunction String -> PandocLua NumResults
pandocPackageSearcher
StackIndex -> Integer -> LuaE PandocError ()
forall e. LuaError e => StackIndex -> Integer -> LuaE e ()
Lua.rawseti (CInt -> StackIndex
Lua.nth CInt
2) Integer
1
Int -> LuaE PandocError ()
forall e. Int -> LuaE e ()
Lua.pop Int
1
where
shiftArray :: LuaE PandocError ()
shiftArray = [Integer]
-> (Integer -> LuaE PandocError ()) -> LuaE PandocError ()
forall (t :: * -> *) (m :: * -> *) a b.
(Foldable t, Monad m) =>
t a -> (a -> m b) -> m ()
forM_ [Integer
4, Integer
3, Integer
2, Integer
1] ((Integer -> LuaE PandocError ()) -> LuaE PandocError ())
-> (Integer -> LuaE PandocError ()) -> LuaE PandocError ()
forall a b. (a -> b) -> a -> b
$ \Integer
i -> do
StackIndex -> Integer -> LuaE PandocError ()
forall e. LuaError e => StackIndex -> Integer -> LuaE e ()
Lua.rawgeti (-StackIndex
1) Integer
i
StackIndex -> Integer -> LuaE PandocError ()
forall e. LuaError e => StackIndex -> Integer -> LuaE e ()
Lua.rawseti (-StackIndex
2) (Integer
i Integer -> Integer -> Integer
forall a. Num a => a -> a -> a
+ Integer
1)
pandocPackageSearcher :: String -> PandocLua Lua.NumResults
pandocPackageSearcher :: String -> PandocLua NumResults
pandocPackageSearcher String
pkgName =
case String
pkgName of
String
"pandoc" -> HaskellFunction PandocError -> PandocLua NumResults
forall a. Num a => HaskellFunction PandocError -> PandocLua a
pushWrappedHsFun (HaskellFunction PandocError -> PandocLua NumResults)
-> HaskellFunction PandocError -> PandocLua NumResults
forall a b. (a -> b) -> a -> b
$ PandocLua NumResults -> HaskellFunction PandocError
forall e a. Exposable e a => a -> HaskellFunction e
Lua.toHaskellFunction @PandocError PandocLua NumResults
Pandoc.pushModule
String
"pandoc.mediabag" -> Module PandocError -> PandocLua NumResults
pushModuleLoader Module PandocError
MediaBag.documentedModule
String
"pandoc.path" -> Module PandocError -> PandocLua NumResults
pushModuleLoader Module PandocError
forall e. LuaError e => Module e
Path.documentedModule
String
"pandoc.system" -> Module PandocError -> PandocLua NumResults
pushModuleLoader Module PandocError
forall e. LuaError e => Module e
System.documentedModule
String
"pandoc.types" -> Module PandocError -> PandocLua NumResults
pushModuleLoader Module PandocError
Types.documentedModule
String
"pandoc.utils" -> Module PandocError -> PandocLua NumResults
pushModuleLoader Module PandocError
Utils.documentedModule
String
"text" -> Module PandocError -> PandocLua NumResults
pushModuleLoader Module PandocError
forall e. Module e
Text.documentedModule
String
"pandoc.List" -> HaskellFunction PandocError -> PandocLua NumResults
forall a. Num a => HaskellFunction PandocError -> PandocLua a
pushWrappedHsFun (HaskellFunction PandocError -> PandocLua NumResults)
-> (PandocLua NumResults -> HaskellFunction PandocError)
-> PandocLua NumResults
-> PandocLua NumResults
forall b c a. (b -> c) -> (a -> b) -> a -> c
. forall a.
Exposable PandocError a =>
a -> HaskellFunction PandocError
forall e a. Exposable e a => a -> HaskellFunction e
Lua.toHaskellFunction @PandocError (PandocLua NumResults -> PandocLua NumResults)
-> PandocLua NumResults -> PandocLua NumResults
forall a b. (a -> b) -> a -> b
$
String -> PandocLua NumResults
loadDefaultModule String
pkgName
String
_ -> PandocLua NumResults
reportPandocSearcherFailure
where
pushModuleLoader :: Module PandocError -> PandocLua NumResults
pushModuleLoader Module PandocError
mdl = HaskellFunction PandocError -> PandocLua NumResults
forall a. LuaE PandocError a -> PandocLua a
liftPandocLua (HaskellFunction PandocError -> PandocLua NumResults)
-> HaskellFunction PandocError -> PandocLua NumResults
forall a b. (a -> b) -> a -> b
$ do
HaskellFunction PandocError -> LuaE PandocError ()
forall e. LuaError e => HaskellFunction e -> LuaE e ()
Lua.pushHaskellFunction (HaskellFunction PandocError -> LuaE PandocError ())
-> HaskellFunction PandocError -> LuaE PandocError ()
forall a b. (a -> b) -> a -> b
$
CInt -> NumResults
Lua.NumResults CInt
1 NumResults -> LuaE PandocError () -> HaskellFunction PandocError
forall (f :: * -> *) a b. Functor f => a -> f b -> f a
<$ Module PandocError -> LuaE PandocError ()
forall e. LuaError e => Module e -> LuaE e ()
Lua.pushModule @PandocError Module PandocError
mdl
NumResults -> HaskellFunction PandocError
forall (m :: * -> *) a. Monad m => a -> m a
return (CInt -> NumResults
Lua.NumResults CInt
1)
pushWrappedHsFun :: HaskellFunction PandocError -> PandocLua a
pushWrappedHsFun HaskellFunction PandocError
f = LuaE PandocError a -> PandocLua a
forall a. LuaE PandocError a -> PandocLua a
liftPandocLua (LuaE PandocError a -> PandocLua a)
-> LuaE PandocError a -> PandocLua a
forall a b. (a -> b) -> a -> b
$ do
HaskellFunction PandocError -> LuaE PandocError ()
forall e. LuaError e => HaskellFunction e -> LuaE e ()
Lua.pushHaskellFunction HaskellFunction PandocError
f
a -> LuaE PandocError a
forall (m :: * -> *) a. Monad m => a -> m a
return a
1
reportPandocSearcherFailure :: PandocLua NumResults
reportPandocSearcherFailure = HaskellFunction PandocError -> PandocLua NumResults
forall a. LuaE PandocError a -> PandocLua a
liftPandocLua (HaskellFunction PandocError -> PandocLua NumResults)
-> HaskellFunction PandocError -> PandocLua NumResults
forall a b. (a -> b) -> a -> b
$ do
String -> LuaE PandocError ()
forall a e. (Pushable a, LuaError e) => a -> LuaE e ()
Lua.push (String
"\n\t" String -> String -> String
forall a. Semigroup a => a -> a -> a
<> String
pkgName String -> String -> String
forall a. Semigroup a => a -> a -> a
<> String
" is not one of pandoc's default packages")
NumResults -> HaskellFunction PandocError
forall (m :: * -> *) a. Monad m => a -> m a
return (CInt -> NumResults
Lua.NumResults CInt
1)