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// Copyright 2014 The gocui Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
package main
import (
"log"
"os"
"plugin"
// "github.com/awesome-gocui/gocui"
)
type Greeter interface {
Greet()
}
var plugGocli *plugin.Plugin
var plugHello *plugin.Plugin
func main() {
log.Println("attempt plugin")
go loadPlugin(plugHello, "../../toolkit/hello.so")
loadPlugin(plugGocli, "../../toolkit/gocli.so")
}
func loadPlugin(plug *plugin.Plugin, name string) {
// load module
// 1. open the so file to load the symbols
plug, err = plugin.Open(name)
if err != nil {
log.Println(err)
os.Exit(1)
}
// 2. look up a symbol (an exported function or variable)
// in this case, variable Greeter
symGreeter, err := plug.Lookup("Greeter")
if err != nil {
log.Println(err)
os.Exit(1)
}
log.Println("symGreater", symGreeter)
// 3. Assert that loaded symbol is of a desired type
// in this case interface type Greeter (defined above)
// var greeter Greeter
greeter, ok := symGreeter.(Greeter)
if !ok {
log.Println("unexpected type from module symbol")
os.Exit(1)
}
// 4. use the module
greeter.Greet()
}
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