Function EditLoop

internal/editor/editor.go:24–64

EditLoop launches OS-specific editor (VI, notepad.exe or another editor configured through environment variables) It creates a temporary file with 'initial' contents and repeatedly invokes the editor until the provided 'parse' function returns nil result indicating success. The 'parse' function is p

(ctx context.Context, fname, initial string, withComments bool, parse func(updated string) error)

// It creates a temporary file with 'initial' contents and repeatedly invokes the editor until the provided 'parse' function
// returns nil result indicating success. The 'parse' function is passed the contents of edited files without # line comments.
func EditLoop(ctx context.Context, fname, initial string, withComments bool, parse func(updated string) error) error {
	tmpDir, err := os.MkdirTemp("", "kopia")
	if err != nil {
		return errors.Wrap(err, "unable to create temp directory")
	}

	tmpFile := filepath.Join(tmpDir, fname)
	defer os.RemoveAll(tmpDir) //nolint:errcheck

	//nolint:mnd
	if err := os.WriteFile(tmpFile, []byte(initial), 0o600); err != nil {
		return errors.Wrap(err, "unable to write file to edit")
	}

	for {
		if err := EditFile(ctx, tmpFile); err != nil {
			return errors.Wrap(err, "error launching editor")
		}

		txt, err := readAndStripComments(tmpFile, withComments)
		if err != nil {
			return errors.Wrap(err, "error parsing edited file")
		}

		err = parse(txt)
		if err == nil {
			return nil
		}

		log(ctx).Errorf("%v", err)
		fmt.Print("Reopen editor to fix? (Y/n) ")

		var shouldReopen string

		_, _ = fmt.Scanf("%s", &shouldReopen)

		if strings.HasPrefix(strings.ToLower(shouldReopen), "n") {
			return errors.New("aborted")
		}
	}
}

func readAndStripComments(fname string, withComments bool) (string, error) {
	if !withComments {