Add main.go

Author: hioki-daichi

kadai3-2/hioki-daichi/main.go

@@ -0,0 +1,33 @@
+package main
+
+import (
+	"context"
+	"io"
+	"log"
+	"os"
+
+	"github.com/gopherdojo/dojo3/kadai3-2/hioki-daichi/downloading"
+	"github.com/gopherdojo/dojo3/kadai3-2/hioki-daichi/opt"
+	"github.com/gopherdojo/dojo3/kadai3-2/hioki-daichi/termination"
+)
+
+func main() {
+	err := execute(os.Stdout, os.Args[1:])
+	if err != nil {
+		log.Fatal(err)
+	}
+}
+
+func execute(w io.Writer, args []string) error {
+	ctx := context.Background()
+
+	ctx, clean := termination.Listen(ctx, w)
+	defer clean()
+
+	opts, err := opt.Parse(args...)
+	if err != nil {
+		return err
+	}
+
+	return downloading.NewDownloader(w, opts).Download(ctx)
+}