github.com/mborho/rem@v0.17.0/utils.go (about) 1 // rem - A tool to remember things on the command line. 2 // Copyright (C) 2015 Martin Borho (martin@borho.net) 3 // 4 // This program is free software: you can redistribute it and/or modify 5 // it under the terms of the GNU General Public License as published by 6 // the Free Software Foundation, either version 3 of the License, or 7 // (at your option) any later version. 8 // 9 // This program is distributed in the hope that it will be useful, 10 // but WITHOUT ANY WARRANTY; without even the implied warranty of 11 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 12 // GNU General Public License for more details. 13 // 14 // You should have received a copy of the GNU General Public License 15 // along with this program. If not, see <http://www.gnu.org/licenses/>. 16 17 package main 18 19 import ( 20 "errors" 21 "fmt" 22 "os" 23 "strconv" 24 ) 25 26 func toInt(str string) (int, error) { 27 integer, err := strconv.Atoi(str) 28 if err != nil { 29 return 0, errors.New("Need index number.") 30 } 31 return integer, err 32 } 33 34 func exit(msg error) { 35 fmt.Println(msg) 36 os.Exit(1) 37 }