go.yuchanns.xyz/lua

lua

Lua Go binding in purego

Caution

⚠️This library is working in progress 🚧 And APIs are not stable yet, maybe cause breaking changes many times. I make it public only for unlimited GitHub Actions minutes. It is not recommended to use at this moment.

Installation

go get go.yuchanns.xyz/lua

Usage

package main

import (
	"fmt"

	"go.yuchanns.xyz/lua"
)

func main() {
	err := lua.Init("/path/to/lua/dynlib.so")
	if err != nil {
		fmt.Println("Error creating temp file:", err)
		return
	}
	defer lua.Deinit()

	// Create a new Lua state
	L := lua.NewState()
	defer L.Close()

	L.OpenLibs()

	// Load a Lua script
	if err := L.DoString(`print("Hello, Lua!")`); err != nil {
		fmt.Println("Error:", err)
		return
	}

	// Call a Go function from Lua
	L.PushCFunction(lua.NewCallback(func(L *lua.State) int {
		x := L.CheckNumber(1)
		L.PushNumber(x * 2)
		return 1
	}))
	if err := L.SetGlobal("double_number"); err != nil {
		fmt.Println("Error:", err)
		return
	}
	if err := L.DoString(`print(double_number(21))`); err != nil {
		fmt.Println("Error:", err)
		return
	}
}

Development

Clone

git clone --recurse-submodules https://github.com/yuchanns/lua

Build Dependencies

We use luamake to build Lua.

luamake

Run Tests

cd lua54 && go test -v .