diff --git a/prettyjson.dart b/prettyjson.dart
index 0e47d0a..8ea78bc 100644
--- a/prettyjson.dart
+++ b/prettyjson.dart
@@ -3,15 +3,11 @@ import 'dart:io';
 import 'package:args/args.dart';
 
 main(List<String> args) async {
-  final parser = new ArgParser();
-  parser.addFlag('help', abbr: 'h', defaultsTo: false, help: 'Help');
-
-  final parseResult = parser.parse(args);
+  final parseResult = parseArgs(args);
   if (parseResult['help']) {
     print('Print help message for prettyjson.dart');
     return;
   }
-
   final restArgs = parseResult.rest;
 
   final jsonContent = await readContent(restArgs);
@@ -20,6 +16,13 @@ main(List<String> args) async {
   print(encoder.convert(jsonDecoded));
 }
 
+ArgResults parseArgs(List<String> args) {
+  final parser = new ArgParser();
+  parser.addFlag('help', abbr: 'h', defaultsTo: false, help: 'Help');
+
+  return parser.parse(args);
+}
+
 Future<String> readContent(List<String> args) async {
   if (args.length == 0) {
     return readFromStdin();