code.vegaprotocol.io/vega@v0.79.0/cmd/vegawallet/commands/flags/force.go (about)

     1  // Copyright (C) 2023 Gobalsky Labs Limited
     2  //
     3  // This program is free software: you can redistribute it and/or modify
     4  // it under the terms of the GNU Affero General Public License as
     5  // published by the Free Software Foundation, either version 3 of the
     6  // License, or (at your option) any later version.
     7  //
     8  // This program is distributed in the hope that it will be useful,
     9  // but WITHOUT ANY WARRANTY; without even the implied warranty of
    10  // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    11  // GNU Affero General Public License for more details.
    12  //
    13  // You should have received a copy of the GNU Affero General Public License
    14  // along with this program.  If not, see <http://www.gnu.org/licenses/>.
    15  
    16  package flags
    17  
    18  import (
    19  	"bufio"
    20  	"fmt"
    21  	"os"
    22  	"strings"
    23  )
    24  
    25  func AreYouSure() bool {
    26  	return YesOrNo("Are you sure?")
    27  }
    28  
    29  func DoYouApproveTx() bool {
    30  	return YesOrNo("Do you approve this transaction?")
    31  }
    32  
    33  func YesOrNo(question string) bool {
    34  	reader := bufio.NewReader(os.Stdin)
    35  	defer fmt.Println()
    36  	for {
    37  		fmt.Print(question + " (y/n) ") //nolint:forbidigo
    38  
    39  		answer, err := reader.ReadString('\n')
    40  		if err != nil {
    41  			panic(fmt.Errorf("couldn't read input: %w", err))
    42  		}
    43  
    44  		answer = strings.ToLower(strings.Trim(answer, " \r\n\t"))
    45  
    46  		switch answer {
    47  		case "yes", "y":
    48  			return true
    49  		case "no", "n":
    50  			return false
    51  		default:
    52  			fmt.Printf("invalid answer %q, expect \"yes\" or \"no\"\n", answer) //nolint:forbidigo
    53  		}
    54  	}
    55  }