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main_js.go
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/
main_js.go
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// +build js
package main
import (
"bytes"
"fmt"
"os"
"github.com/gopherjs/gopherjs/js"
"github.com/nwidger/nintengo/nes"
)
func main() {
options := &nes.Options{
Region: "NTSC",
}
document := js.Global.Get("document")
inputElem := document.Call("createElement", "input")
inputElem.Call("setAttribute", "type", "file")
document.Get("body").Call("appendChild", inputElem)
filec := make(chan *js.Object, 1)
inputElem.Set("onchange", func(event *js.Object) {
filec <- inputElem.Get("files").Index(0)
})
file := <-filec
gamename := file.Get("name").String()
reader := js.Global.Get("FileReader").New()
bufc := make(chan []byte, 1)
reader.Set("onloadend", func(event *js.Object) {
bufc <- js.Global.Get("Uint8Array").New(reader.Get("result")).Interface().([]byte)
})
reader.Call("readAsArrayBuffer", file)
buf := <-bufc
br := bytes.NewReader(buf)
nes, err := nes.NewNESFromReader(gamename, br, options)
if err != nil {
fmt.Fprintf(os.Stderr, "%v\n", err)
return
}
inputElem.Call("remove")
go nes.Run()
}