gotools/formatting/cmd/path2tree/main.go

package main

import (
	"encoding/json"
	"flag"
	"fmt"
	"io/ioutil"
	"os"

	"git.lattuga.net/blallo/gotools/formatting"
)

func showExamples() {
	enc := json.NewEncoder(os.Stderr)
	for i, example := range examples {
		fmt.Fprintf(os.Stderr, "\nExample %d\n\nInput:\n\n", i)
		formatting.PrettyPrint(example)
		fmt.Fprintf(os.Stderr, "\nOutput:\n\n")
		formatting.EncodeJSON(example, enc)
	}
}

func main() {
	filepath := flag.String("file", "", "Path to a file of paths with descriptions")
	flag.Parse()
	var input map[string]string
	if *filepath != "" {
		filecont, err := ioutil.ReadFile(*filepath)
		if err != nil {
			panic(err)
		}
		err = json.Unmarshal(filecont, &input)
		if err != nil {
			panic(err)
		}
	} else {
		fmt.Fprintf(os.Stderr, "Missing input file!\n")
		showExamples()
		os.Exit(1)
	}
	enc := json.NewEncoder(os.Stdout)
	formatting.EncodeJSON(input, enc)
}