Files
golib/njs-console/prompt.go
Nicolas JUHEL c388f4f985 Inital import
2020-01-04 14:42:49 +01:00

105 lines
2.4 KiB
Go

/*
* MIT License
*
* Copyright (c) 2019 Nicolas JUHEL
*
* 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 njs_console
import (
"bufio"
"fmt"
"net/url"
"os"
"strconv"
"golang.org/x/crypto/ssh/terminal"
)
func printPrompt(text string) {
if text != "" {
ColorPrompt.printf("%s: ", text)
}
}
func PromptString(text string) (string, error) {
var (
scn *bufio.Scanner = bufio.NewScanner(os.Stdin)
res string
err error
)
printPrompt(text)
for scn.Scan() {
res = scn.Text()
err = scn.Err()
break
}
return res, err
}
func PromptInt(text string) (int64, error) {
if str, err := PromptString(text); err != nil {
return 0, err
} else {
return strconv.ParseInt(str, 10, 64)
}
}
func PromptUrl(text string) (*url.URL, error) {
if str, err := PromptString(text); err != nil {
return nil, err
} else {
return url.Parse(str)
}
}
func PromptBool(text string) (bool, error) {
if str, err := PromptString(text); err != nil {
return false, err
} else {
return strconv.ParseBool(str)
}
}
func PromptPassword(text string) (string, error) {
var (
res string
err error
)
printPrompt(text)
res, err = getTerminal().ReadPassword("")
fmt.Printf("\n")
return res, err
}
func getTerminal() *terminal.Terminal {
r := bufio.NewReader(os.Stdin)
w := bufio.NewWriter(os.Stdout)
b := bufio.NewReadWriter(r, w)
return terminal.NewTerminal(b, "")
}