From f93607f954c002b251fba4e0b85493e0b2b619b4 Mon Sep 17 00:00:00 2001
From: daurnimator <quae@daurnimator.com>
Date: Tue, 25 Apr 2017 19:01:45 +1000
Subject: Add (empty) io library

---
 README.md     | 22 ++++++++++++++++++++++
 src/linit.js  |  2 ++
 src/liolib.js | 26 ++++++++++++++++++++++++++
 src/lualib.js |  2 +-
 4 files changed, 51 insertions(+), 1 deletion(-)
 create mode 100644 src/liolib.js

diff --git a/README.md b/README.md
index a7f6905..7fc4e98 100644
--- a/README.md
+++ b/README.md
@@ -25,6 +25,28 @@
     - [ ] Package
     - [ ] os
     - [ ] io
+        - [ ] `io.stdin`
+        - [ ] `io.stdout`
+        - [ ] `io.stderr`
+        - [ ] `io.flush()`
+        - [ ] `io.input()`
+        - [ ] `io.lines()`
+        - [ ] `io.open()`
+        - [ ] `io.output()`
+        - [ ] `io.popen()`
+        - [ ] `io.read()`
+        - [ ] `io.tmpfile()`
+        - [ ] `io.type()`
+        - [ ] `io.write()`
+        - [ ] `io.close()`
+        - [ ] `file:flush()`
+        - [ ] `file:lines()`
+        - [ ] `file:read()`
+        - [ ] `file:read()`
+        - [ ] `file:setvbuf()`
+        - [ ] `file:write()`
+        - [ ] `file:__gc()`
+        - [ ] `file:__tostring()`
 - [ ] C API
     - [x] ...
     - [ ] lua_arith
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;
-- 
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