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Forked from r0l1/confirm.go
Created Feb 3, 2021
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Go (golang): How to ask for user confirmation via command line
/* MIT License
*
* Copyright (c) 2017 Roland Singer [roland.singer@desertbit.com]
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in all
* copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*/
package main
import (
"bufio"
"fmt"
"log"
"os"
"strings"
)
// askForConfirmation asks the user for confirmation. A user must type in "yes" or "no" and
// then press enter. It has fuzzy matching, so "y", "Y", "yes", "YES", and "Yes" all count as
// confirmations. If the input is not recognized, it will ask again. The function does not return
// until it gets a valid response from the user.
func askForConfirmation(s string) bool {
reader := bufio.NewReader(os.Stdin)
for {
fmt.Printf("%s [y/n]: ", s)
response, err := reader.ReadString('\n')
if err != nil {
log.Fatal(err)
}
response = strings.ToLower(strings.TrimSpace(response))
if response == "y" || response == "yes" {
return true
} else if response == "n" || response == "no" {
return false
}
}
}
func main() {
c := askForConfirmation("Do you really want to reset your system?")
if c {
fmt.Println("Sorry dude, I need root rights...")
return
}
}
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