package main

import (
	"archive/zip"
	"io"
	"os"
)

func main() {
	f, err := zip.OpenReader(os.Args[1])
	if err != nil {
		panic(err)
	}

	in, err := f.Open(os.Args[2])
	if err != nil {
		panic(err)
	}

	out, err := os.OpenFile(os.Getenv("out"), os.O_CREATE|os.O_RDWR, 0666)
	if err != nil {
		panic(err)
	}

	if _, err := io.Copy(out, in); err != nil {
		panic(err)
	}

	out.Close()
	in.Close()
	f.Close()
}