Add (empty) io library

3 files changed, 29 insertions, 1 deletions

diff --git a/src/linit.js b/src/linit.js
index 3d18e2f..925b55a 100644
--- a/src/linit.js
+++ b/src/linit.js
@@ -10,6 +10,7 @@ const lstrlib  = require('./lstrlib.js');
 const ltablib  = require('./ltablib.js');
 const lutf8lib = require('./lutf8lib.js');
 const ldblib   = require('./ldblib.js');
+const liolib   = require('./liolib.js');
 const loslib   = require('./loslib.js');
 const lualib   = require('./lualib.js');
 
@@ -17,6 +18,7 @@ const loadedlibs = {
     [lualib.LUA_COLIBNAME]:   lcorolib.luaopen_coroutine,
     [lualib.LUA_DBLIBNAME]:   ldblib.luaopen_debug,
     [lualib.LUA_MATHLIBNAME]: lmathlib.luaopen_math,
+    [lualib.LUA_IOLIBNAME]:   liolib.luaopen_io,
     [lualib.LUA_OSLIBNAME]:   loslib.luaopen_os,
     [lualib.LUA_STRLIBNAME]:  lstrlib.luaopen_string,
     [lualib.LUA_TABLIBNAME]:  ltablib.luaopen_table,
diff --git a/src/liolib.js b/src/liolib.js
new file mode 100644
index 0000000..22dc2e8
--- /dev/null
+++ b/src/liolib.js
@@ -0,0 +1,26 @@
+"use strict";
+
+const lua     = require('./lua.js');
+const lauxlib = require('./lauxlib.js');
+
+const iolib = {
+};
+
+const flib = {
+};
+
+const createmeta = function(L) {
+    lauxlib.luaL_newmetatable(L, lauxlib.LUA_FILEHANDLE);  /* create metatable for file handles */
+    lua.lua_pushvalue(L, -1);  /* push metatable */
+    lua.lua_setfield(L, -2, lua.to_luastring("__index", true));  /* metatable.__index = metatable */
+    lauxlib.luaL_setfuncs(L, flib, 0);  /* add file methods to new metatable */
+    lua.lua_pop(L, 1);  /* pop new metatable */
+};
+
+const luaopen_io = function(L) {
+    lauxlib.luaL_newlib(L, iolib);
+    createmeta(L);
+    return 1;
+};
+
+module.exports.luaopen_io = luaopen_io;
diff --git a/src/lualib.js b/src/lualib.js
index 327673e..b0bd253 100644
--- a/src/lualib.js
+++ b/src/lualib.js
@@ -16,7 +16,7 @@ module.exports[LUA_TABLIBNAME] = require("./ltablib.js").luaopen_table;
 
 const LUA_IOLIBNAME = "io";
 module.exports.LUA_IOLIBNAME = LUA_IOLIBNAME;
-// module.exports[LUA_IOLIBNAME] = require("./liolib.js").luaopen_io;
+module.exports[LUA_IOLIBNAME] = require("./liolib.js").luaopen_io;
 
 const LUA_OSLIBNAME = "os";
 module.exports.LUA_OSLIBNAME = LUA_OSLIBNAME;