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main.go
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main.go
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// +build js,wasm
package main
import (
"errors"
openPGPBridge "github.com/jerson/openpgp-mobile/bridge"
"syscall/js"
)
func Promise(i []js.Value, fn func() (result interface{}, err error)) interface{} {
if len(i) < 1 {
println(errors.New("error: required at least one argument").Error())
return nil
}
callback := i[len(i)-1:][0]
if callback.Type() != js.TypeFunction {
println(errors.New("error: last argument should be a callback(err,result)").Error())
return nil
}
result, err := fn()
if err != nil {
callback.Invoke(err.Error(), js.Null())
return nil
}
callback.Invoke(js.Null(), js.ValueOf(result))
return nil
}
func Call(this js.Value, i []js.Value) interface{} {
return Promise(i, func() (result interface{}, err error) {
length := i[2].Int()
received := make([]byte, length)
js.CopyBytesToGo(received, i[1])
output, err := openPGPBridge.Call(i[0].String(), received)
if err != nil {
return nil, err
}
dst := js.Global().Get("Uint8Array").New(len(output))
js.CopyBytesToJS(dst, output)
return dst, err
})
}
func registerCallbacks() {
js.Global().Set("openPGPBridgeCall", js.FuncOf(Call))
}
func main() {
c := make(chan bool, 0)
registerCallbacks()
<-c
}