gcmd.Scanf supports read line that contains whitespace

os/gcmd/gcmd_scan.go

@@ -17,18 +17,20 @@ import (
 
 // Scan prints <info> to stdout, reads and returns user input, which stops by '\n'.
 func Scan(info ...interface{}) string {
-	var s string
 	fmt.Print(info...)
+	return readline()
+}
+
+// Scanf prints <info> to stdout with <format>, reads and returns user input, which stops by '\n'.
+func Scanf(format string, info ...interface{}) string {
+	fmt.Printf(format, info...)
+	return readline()
+}
+
+func readline() string {
+	var s string
 	reader := bufio.NewReader(os.Stdin)
 	s, _ = reader.ReadString('\n')
 	s = gstr.Trim(s)
 	return s
 }
-
-// Scanf prints <info> to stdout with <format>, reads and returns user input, which stops by '\n'.
-func Scanf(format string, info ...interface{}) string {
-	var s string
-	fmt.Printf(format, info...)
-	fmt.Scanln(&s)
-	return s
-}