Merge pull request yuin#361 from 0x501D/package.config

add package.config

Author: yuin

config.go

@@ -22,15 +22,22 @@ var LuaPath = "LUA_PATH"
 var LuaLDir string
 var LuaPathDefault string
 var LuaOS string
+var LuaDirSep string
+var LuaPathSep = ";"
+var LuaPathMark = "?"
+var LuaExecDir = "!"
+var LuaIgMark = "-"
 
 func init() {
 	if os.PathSeparator == '/' { // unix-like
 		LuaOS = "unix"
 		LuaLDir = "/usr/local/share/lua/5.1"
+		LuaDirSep = "/"
 		LuaPathDefault = "./?.lua;" + LuaLDir + "/?.lua;" + LuaLDir + "/?/init.lua"
 	} else { // windows
 		LuaOS = "windows"
 		LuaLDir = "!\\lua"
+		LuaDirSep = "\\"
 		LuaPathDefault = ".\\?.lua;" + LuaLDir + "\\?.lua;" + LuaLDir + "\\?\\init.lua"
 	}
 }

loadlib.go

@@ -65,6 +65,9 @@ func OpenPackage(L *LState) int {
 	L.SetField(packagemod, "path", LString(loGetPath(LuaPath, LuaPathDefault)))
 	L.SetField(packagemod, "cpath", emptyLString)
 
+	L.SetField(packagemod, "config", LString(LuaDirSep+"\n"+LuaPathSep+
+		"\n"+LuaPathMark+"\n"+LuaExecDir+"\n"+LuaIgMark+"\n"))
+
 	L.Push(packagemod)
 	return 1
 }