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package input
import (
"bufio"
"fmt"
"os"
"strings"
"syscall"
"github.com/MichaelMure/git-bug/util/interrupt"
"golang.org/x/crypto/ssh/terminal"
)
func PromptValue(name string, preValue string) (string, error) {
return promptValue(name, preValue, false)
}
func PromptValueRequired(name string, preValue string) (string, error) {
return promptValue(name, preValue, true)
}
func promptValue(name string, preValue string, required bool) (string, error) {
for {
if preValue != "" {
_, _ = fmt.Fprintf(os.Stderr, "%s [%s]: ", name, preValue)
} else {
_, _ = fmt.Fprintf(os.Stderr, "%s: ", name)
}
line, err := bufio.NewReader(os.Stdin).ReadString('\n')
if err != nil {
return "", err
}
line = strings.TrimSpace(line)
if preValue != "" && line == "" {
return preValue, nil
}
if required && line == "" {
_, _ = fmt.Fprintf(os.Stderr, "%s is empty\n", name)
continue
}
return line, nil
}
}
// PromptPassword performs interactive input collection to get the user password
// while halting echo on the controlling terminal.
func PromptPassword() (string, error) {
termState, err := terminal.GetState(int(syscall.Stdin))
if err != nil {
return "", err
}
cancel := interrupt.RegisterCleaner(func() error {
return terminal.Restore(int(syscall.Stdin), termState)
})
defer cancel()
for {
fmt.Print("password: ")
bytePassword, err := terminal.ReadPassword(int(syscall.Stdin))
// new line for coherent formatting, ReadPassword clip the normal new line
// entered by the user
fmt.Println()
if err != nil {
return "", err
}
if len(bytePassword) > 0 {
return string(bytePassword), nil
}
fmt.Println("password is empty")
}
}
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