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package input
import (
"bufio"
"fmt"
"os"
"strings"
)
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
}
}
|
