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  }