Lua: add `pandoc.system` module (#5468)

The `system` Lua module provides utility functions to interact with the
operating- and file system. E.g.

    print(pandoc.system.get_current_directory())

or

    pandoc.system.with_temporary_directory('tikz', function (dir)
      -- write and compile a TikZ file with pdflatex
    end)

1 files changed, 2 insertions, 0 deletions

diff --git a/src/Text/Pandoc/Lua/Packages.hs b/src/Text/Pandoc/Lua/Packages.hs
index fdfa2238a..5f2751f52 100644
--- a/src/Text/Pandoc/Lua/Packages.hs
+++ b/src/Text/Pandoc/Lua/Packages.hs
@@ -25,6 +25,7 @@ import Text.Pandoc.Class (readDataFile, runIO, setUserDataDir)
 import qualified Foreign.Lua as Lua
 import Text.Pandoc.Lua.Module.Pandoc as Pandoc
 import Text.Pandoc.Lua.Module.MediaBag as MediaBag
+import Text.Pandoc.Lua.Module.System as System
 import Text.Pandoc.Lua.Module.Utils as Utils
 
 -- | Parameters used to create lua packages/modules.
@@ -52,6 +53,7 @@ pandocPackageSearcher pkgParams pkgName =
     "pandoc"          -> let datadir = luaPkgDataDir pkgParams
                          in pushWrappedHsFun (Pandoc.pushModule datadir)
     "pandoc.mediabag" -> pushWrappedHsFun MediaBag.pushModule
+    "pandoc.system"   -> pushWrappedHsFun System.pushModule
     "pandoc.utils"    -> let datadir = luaPkgDataDir pkgParams
                          in pushWrappedHsFun (Utils.pushModule datadir)
     _ -> searchPureLuaLoader