// Custom gets input and calls the given test function with the input to
// check if the input is valid, a true return will return the string.
func Custom(prefix string, test func(string) (string, bool)) (string, error) {
var err error
line := ""
ok := false
term, err := NewTerminal()
if err != nil {
return "", err
}
defer term.Close()
for !ok {
line, err = term.Prompt(prefix + ": ")
if err != nil && err != io.EOF {
se := errors.IsStackError(err)
if se == nil || se.Err != io.EOF {
return "", err
}
}
line, ok = test(line)
}
return line, nil
}
// Password retrieves a password from stdin without echoing it.
func Password(prefix string) (string, error) {
var err error
line := ""
term, err := NewTerminal()
if err != nil {
return "", err
}
defer term.Close()
for line == "" {
line, err = term.Password(prefix + ": ")
if err != nil && err != io.EOF {
se := errors.IsStackError(err)
if se == nil || se.Err != io.EOF {
return "", err
}
}
if line == "" {
log.Fprintln(os.Stderr, "red", prefix, errors.ErrEmpty)
}
}
return line, nil
}
// wrapErr wraps an error with the given service name.
func (watcher *Watcher) wrapErr(err error) error {
if err == nil {
return nil
}
se := errors.IsStackError(err)
if se != nil {
se.Err = errors.Newf(errors.ErrSyncTmpl, watcher.Service.Name, se.Err)
return se
}
return errors.Newf(errors.ErrSyncTmpl, watcher.Service.Name, err)
}