utils.go

// rem - A tool to remember things on the command line.
// Copyright (C) 2015 Martin Borho (martin@borho.net)
//
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with this program.  If not, see <http://www.gnu.org/licenses/>.

package main

import (
	"errors"
	"fmt"
	"os"
	"strconv"
)

func toInt(str string) (int, error) {
	integer, err := strconv.Atoi(str)
	if err != nil {
		return 0, errors.New("Need index number.")
	}
	return integer, err
}

func exit(msg error) {
	fmt.Println(msg)
	os.Exit(1)
}