main.go

package main

import (
	"context"
	"errors"
	"fmt"
	"io"
	"log"
	"os"
	"strings"

	"github.com/DavidGamba/go-getoptions"
)

var Logger = log.New(io.Discard, "", log.LstdFlags)

func main() {
	os.Exit(program(os.Args))
}

func program(args []string) int {
	opt := getoptions.New()
	opt.SetUnknownMode(getoptions.Pass)
	opt.Bool("debug", false)
	opt.SetCommandFn(Run)
	opt.HelpCommand("help", opt.Alias("?"))
	remaining, err := opt.Parse(args[1:])
	if err != nil {
		fmt.Fprintf(os.Stderr, "ERROR: %s\n", err)
		return 1
	}
	if opt.Called("debug") {
		Logger.SetOutput(os.Stderr)
	}
	Logger.Println(remaining)

	ctx, cancel, done := getoptions.InterruptContext()
	defer func() { cancel(); <-done }()

	err = opt.Dispatch(ctx, remaining)
	if err != nil {
		if errors.Is(err, getoptions.ErrorHelpCalled) {
			return 1
		}
		fmt.Fprintf(os.Stderr, "ERROR: %s\n", err)
		if errors.Is(err, getoptions.ErrorParsing) {
			fmt.Fprintf(os.Stderr, "\n"+opt.Help())
		}
		return 1
	}
	return 0
}

func Run(ctx context.Context, opt *getoptions.GetOpt, args []string) error {
	Logger.Printf("Running")

	for _, e := range os.Environ() {
		parts := strings.Split(e, "=")
		key := strings.ToLower(parts[0])
		if strings.Contains(key, "key") || strings.Contains(key, "password") || strings.Contains(key, "token") {
			fmt.Printf("%s=%s\n", parts[0], "***")
		} else {
			fmt.Println(e)
		}
	}
	return nil
}