整理代码

parser/port.go

@@ -0,0 +1,23 @@
+package parser
+
+import (
+	"strconv"
+)
+
+func ParsePort(portStr string) (uint16, error) {
+	port, err := strconv.Atoi(portStr)
+
+	if err != nil {
+		return 0, &ParseError{
+			Type:    ErrInvalidPort,
+			Message: portStr,
+		}
+	}
+	if port < 1 || port > 65535 {
+		return 0, &ParseError{
+			Type:    ErrInvalidPort,
+			Message: portStr,
+		}
+	}
+	return uint16(port), nil
+}