gitee.com/liu-zhao234568/cntest@v1.0.0/cmd/utils/prompt.go (about)

     1  // Copyright 2020 The go-ethereum Authors
     2  // This file is part of go-ethereum.
     3  //
     4  // The go-ethereum library is free software: you can redistribute it and/or modify
     5  // it under the terms of the GNU Lesser 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  // The go-ethereum library 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 Lesser General Public License for more details.
    13  //
    14  // You should have received a copy of the GNU Lesser General Public License
    15  // along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.
    16  
    17  // Package utils contains internal helper functions for go-ethereum commands.
    18  package utils
    19  
    20  import (
    21  	"fmt"
    22  
    23  	"gitee.com/liu-zhao234568/cntest/console/prompt"
    24  )
    25  
    26  // GetPassPhrase displays the given text(prompt) to the user and requests some textual
    27  // data to be entered, but one which must not be echoed out into the terminal.
    28  // The method returns the input provided by the user.
    29  func GetPassPhrase(text string, confirmation bool) string {
    30  	if text != "" {
    31  		fmt.Println(text)
    32  	}
    33  	password, err := prompt.Stdin.PromptPassword("Password: ")
    34  	if err != nil {
    35  		Fatalf("Failed to read password: %v", err)
    36  	}
    37  	if confirmation {
    38  		confirm, err := prompt.Stdin.PromptPassword("Repeat password: ")
    39  		if err != nil {
    40  			Fatalf("Failed to read password confirmation: %v", err)
    41  		}
    42  		if password != confirm {
    43  			Fatalf("Passwords do not match")
    44  		}
    45  	}
    46  	return password
    47  }
    48  
    49  // GetPassPhraseWithList retrieves the password associated with an account, either fetched
    50  // from a list of preloaded passphrases, or requested interactively from the user.
    51  func GetPassPhraseWithList(text string, confirmation bool, index int, passwords []string) string {
    52  	// If a list of passwords was supplied, retrieve from them
    53  	if len(passwords) > 0 {
    54  		if index < len(passwords) {
    55  			return passwords[index]
    56  		}
    57  		return passwords[len(passwords)-1]
    58  	}
    59  	// Otherwise prompt the user for the password
    60  	password := GetPassPhrase(text, confirmation)
    61  	return password
    62  }