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-rw-r--r--input/prompt.go44
1 files changed, 44 insertions, 0 deletions
diff --git a/input/prompt.go b/input/prompt.go
new file mode 100644
index 00000000..7a059b1a
--- /dev/null
+++ b/input/prompt.go
@@ -0,0 +1,44 @@
+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.Printf("%s [%s]: ", name, preValue)
+ } else {
+ fmt.Printf("%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.Printf("%s is empty\n", name)
+ continue
+ }
+
+ return line, nil
+ }
+}