yaml2json.go

package main

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

	"github.com/ghodss/yaml"
)

func doMain(filePath string) ([]byte, error) {
	buf, err := ioutil.ReadFile(filePath)
	if err != nil {
		return buf, err
	}
	return yaml.YAMLToJSON(buf)
}

func main() {
	if len(os.Args) != 2 {
		fmt.Fprintln(os.Stderr, "invalid arguments")
		os.Exit(1)
	}
	buf, err := doMain(os.Args[1])
	if err != nil {
		fmt.Fprintf(os.Stderr, "err: %v\n", err)
		os.Exit(1)
	}
	fmt.Println(string(buf))
}