package main

import (
	"bytes"
	"fmt"
	"io"
	"io/ioutil"
	"log"
	"os"

	"gopkg.in/yaml.v2"
)

func main() {
	log.SetFlags(log.Ldate | log.Ltime | log.Lshortfile)
	b, err := ioutil.ReadAll(os.Stdin)
	if err != nil {
		fmt.Fprintf(os.Stderr, "problem reading stdin: %v\n", err)
		os.Exit(1)
	}
	var obj interface{}
	err = yaml.Unmarshal(b, &obj)
	if err != nil {
		fmt.Fprintf(os.Stderr, "issue in decoding: %v\n", err)
		os.Exit(1)
	}
	bs, err := yaml.Marshal(obj)
	if err != nil {
		fmt.Fprintf(os.Stderr, "issue in encoding: %v\n", err)
		os.Exit(1)
	}
	r := bytes.NewReader(bs)
	io.Copy(os.Stdout, r)
}