Encode File Contents as JSON String

txt2json.go

package main

import (
	"encoding/json"
	"flag"
	"io"
	"io/ioutil"
	"log"
	"os"
)

type Output struct {
	Content string
}

func readFile(configFile string) {
	var err error
	var input = io.ReadCloser(os.Stdin)
	if input, err = os.Open(configFile); err != nil {
		log.Fatalln(err)
	}

	// Read the config file
	jsonBytes, err := ioutil.ReadAll(input)
	input.Close()
	if err != nil {
		log.Fatalln(err)
	}

	f := &Output{
		Content: string(jsonBytes),
	}

	b, _ := json.Marshal(f)
	ioutil.WriteFile("output.txt", b, 0600)

	log.Println("Wrote to file: output.txt")
}

func main() {
	flag.Parse()

	f := flag.Arg(0)
	if f == "" {
		log.Println("File is missing")
		os.Exit(1)
	}

	readFile(f)
}