Fixes problem with multi-dimensional files array

Goutte/Client.php

@@ -19,6 +19,7 @@
 use Guzzle\Http\Message\Response as GuzzleResponse;
 use Guzzle\Http\ClientInterface as GuzzleClientInterface;
 use Guzzle\Http\Client as GuzzleClient;
+use Guzzle\Http\Message\EntityEnclosingRequestInterface;
 
 /**
  * Client.
@@ -112,15 +113,7 @@ protected function doRequest($request)
         }
 
         if ('POST' == $request->getMethod()) {
-            $postFiles = array();
-            foreach ($request->getFiles() as $name => $info) {
-                if (isset($info['tmp_name']) && '' !== $info['tmp_name']) {
-                    $postFiles[$name] = $info['tmp_name'];
-                }
-            }
-            if (!empty($postFiles)) {
-                $guzzleRequest->addPostFiles($postFiles);
-            }
+            $this->addPostFiles($guzzleRequest, $request->getFiles());
         }
 
         $guzzleRequest->getCurlOptions()
@@ -144,6 +137,25 @@ protected function doRequest($request)
         return $this->createResponse($response);
     }
 
+    protected function addPostFiles($request, array $files, $arrayName = '')
+    {
+        if (!$request instanceof EntityEnclosingRequestInterface) {
+            return;
+        }
+
+        foreach ($files as $name => $info) {
+            if (!empty($arrayName)) {
+                $name = $arrayName . '[' . $name . ']';
+            }
+
+            if (isset($info['tmp_name']) && '' !== $info['tmp_name']) {
+                $request->addPostFile($name, $info['tmp_name']);
+            } elseif (is_array($info)) {
+                $this->addPostFiles($request, $info, $name);
+            }
+        }
+    }
+
     protected function createResponse(GuzzleResponse $response)
     {
         return new Response($response->getBody(true), $response->getStatusCode(), $response->getHeaders()->getAll());

Goutte/Tests/ClientTest.php

@@ -122,6 +122,30 @@ public function testUsesPostFiles()
         ), $request->getPostFiles());
     }
 
+    public function testUsesPostFilesNestedFields()
+    {
+        $guzzle = $this->getGuzzle();
+        $client = new Client();
+        $client->setClient($guzzle);
+        $files = array(
+            'form' => array(
+                'test' => array(
+                    'name' => 'test.txt',
+                    'tmp_name' => __FILE__
+                ),
+            ),
+        );
+
+        $crawler = $client->request('POST', 'http://www.example.com/', array(), $files);
+        $request = $this->historyPlugin->getLastRequest();
+
+        $this->assertEquals(array(
+            'form[test]' => array(
+                new PostFile('form[test]', __FILE__, 'text/x-php')
+            )
+        ), $request->getPostFiles());
+    }
+
     public function testUsesCurlOptions()
     {
         $guzzle = $this->getGuzzle();