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