Création d'un UploadedFileResponse qui permet d'envoyer facilement un fichier.

Controller/UploadController.php

@@ -8,6 +8,7 @@
 namespace Irstea\FileUploadBundle\Controller;
 
 use Irstea\FileUploadBundle\Entity\UploadedFile;
+use Irstea\FileUploadBundle\Http\UploadedFileResponse;
 use Irstea\FileUploadBundle\Service\FileManagerInterface;
 use Sensio\Bundle\FrameworkExtraBundle\Configuration\Method;
 use Sensio\Bundle\FrameworkExtraBundle\Configuration\Route;
@@ -17,7 +18,6 @@ use Symfony\Component\HttpFoundation\JsonResponse;
 use Symfony\Component\HttpFoundation\Request;
 use Symfony\Component\HttpFoundation\Response;
 use Symfony\Component\HttpFoundation\ResponseHeaderBag;
-use Symfony\Component\HttpFoundation\StreamedResponse;
 use Symfony\Component\HttpKernel\Exception\BadRequestHttpException;
 use Symfony\Component\HttpKernel\Exception\HttpException;
 use Symfony\Component\HttpKernel\Exception\NotFoundHttpException;
@@ -182,24 +182,8 @@ class UploadController extends Controller
             throw new NotFoundHttpException();
         }
 
-        $response = StreamedResponse::create(function() use($file) { echo $file->getContent(); })
-            ->setPrivate()
-            ->setLastModified($file->getLastModified())
-            ->setEtag($file->getChecksum());
-
-        $response->headers->add(
-            [
-                'Content-Type'        => $file->getMimeType(),
-                'Content-Length'      => $file->getSize(),
-                'Content-Disposition' => $response->headers->makeDisposition(
-                    ResponseHeaderBag::DISPOSITION_ATTACHMENT,
-                    $file->getOriginalFilename()
-                ),
-            ]
-        );
-
+        $response = UploadedFileResponse::create($file, 200, [], false, ResponseHeaderBag::DISPOSITION_ATTACHMENT);
         $response->isNotModified($request);
-
         return $response;
     }
 

Http/UploadedFileResponse.php

+<?php
+
+/*
+ * Copyright (C) 2015 IRSTEA
+ * All rights reserved.
+ */
+
+namespace Irstea\FileUploadBundle\Http;
+
+use DateTime;
+use Irstea\FileUploadBundle\Entity\UploadedFile;
+use LogicException;
+use SplFileInfo;
+use Symfony\Component\HttpFoundation\File\Exception\FileException;
+use Symfony\Component\HttpFoundation\Request;
+use Symfony\Component\HttpFoundation\Response;
+
+/**
+ * Description of UploadedFileResponse
+ *
+ * Très, très, fortement inspiré de Symfony\Component\HttpFoundation\UploadedFileResponse.
+ *
+ * @author Guillaume Perréal <guillaume.perreal@irstea.fr>
+ */
+class UploadedFileResponse extends Response
+{
+    /**
+     *
+     * @var UploadedFile
+     */
+    protected $file;
+
+    protected $offset = 0;
+
+    protected $maxlen;
+
+    /**
+     * Constructor.
+     *
+     * @param UploadedFile        $file               The file to stream
+     * @param int                 $status             The response status code
+     * @param array               $headers            An array of response headers
+     * @param bool                $public             Files are public by default
+     * @param null|string         $contentDisposition The type of Content-Disposition to set automatically with the filename
+     */
+    public function __construct(UploadedFile $file = null, $status = 200, $headers = array(), $public = true, $contentDisposition = null)
+    {
+        parent::__construct(null, $status, $headers);
+
+        if ($file) {
+            $this->setFile($file, $contentDisposition);
+        }
+
+        if ($public) {
+            $this->setPublic();
+        }
+    }
+
+    /**
+     * @param UploadedFile        $file               The file to stream
+     * @param int                 $status             The response status code
+     * @param array               $headers            An array of response headers
+     * @param bool                $public             Files are public by default
+     * @param null|string         $contentDisposition The type of Content-Disposition to set automatically with the filename
+     *
+     * @return UploadedFileResponse The created response
+     */
+    public static function create($file = null, $status = 200, $headers = array(), $public = true, $contentDisposition = null)
+    {
+        return new static($file, $status, $headers, $public, $contentDisposition);
+    }
+
+
+    /**
+     * Sets the file to stream.
+     *
+     * @param UploadedFile        $file               The file to stream
+     * @param string              $contentDisposition
+     *
+     * @return UploadedFileResponse
+     *
+     * @throws FileException
+     */
+    public function setFile(UploadedFile $file, $contentDisposition = null)
+    {
+        $this->file = $file;
+
+        $this
+            ->setLastModified($this->file->getLastModified())
+            ->setEtag($file->getChecksum());
+
+        if ($contentDisposition) {
+            $this->setContentDisposition($contentDisposition);
+        }
+
+        return $this;
+    }
+
+    /**
+     * Gets the file.
+     *
+     * @return UploadedFile The file to stream
+     */
+    public function getFile()
+    {
+        return $this->file;
+    }
+
+    /**
+     * Sets the Content-Disposition header with the given filename.
+     *
+     * @param string $disposition      ResponseHeaderBag::DISPOSITION_INLINE or ResponseHeaderBag::DISPOSITION_ATTACHMENT
+     * @param string $filename         Optionally use this filename instead of the real name of the file
+     * @param string $filenameFallback A fallback filename, containing only ASCII characters. Defaults to an automatically encoded filename
+     *
+     * @return UploadedFileResponse
+     */
+    public function setContentDisposition($disposition, $filename = '', $filenameFallback = '')
+    {
+        if ($filename === '') {
+            $filename = $this->file->getOriginalFilename();
+        }
+
+        $dispositionHeader = $this->headers->makeDisposition($disposition, $filename, $filenameFallback);
+        $this->headers->set('Content-Disposition', $dispositionHeader);
+
+        return $this;
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function prepare(Request $request)
+    {
+        $this->headers->set('Content-Length', $this->file->getSize());
+
+        if (!$this->headers->has('Accept-Ranges')) {
+            // Only accept ranges on safe HTTP methods
+            $this->headers->set('Accept-Ranges', $request->isMethodSafe() ? 'bytes' : 'none');
+        }
+
+        if (!$this->headers->has('Content-Type')) {
+            $this->headers->set('Content-Type', $this->file->getMimeType() ?: 'application/octet-stream');
+        }
+
+        if ('HTTP/1.0' != $request->server->get('SERVER_PROTOCOL')) {
+            $this->setProtocolVersion('1.1');
+        }
+
+        $this->ensureIEOverSSLCompatibility($request);
+
+        $this->offset = 0;
+        $this->maxlen = -1;
+
+        if ($request->headers->has('Range')) {
+            // Process the range headers.
+            if (!$request->headers->has('If-Range') || $this->getEtag() == $request->headers->get('If-Range')) {
+                $range = $request->headers->get('Range');
+                $fileSize = $this->file->getSize();
+
+                list($start, $end) = explode('-', substr($range, 6), 2) + array(0);
+
+                $end = ('' === $end) ? $fileSize - 1 : (int) $end;
+
+                if ('' === $start) {
+                    $start = $fileSize - $end;
+                    $end = $fileSize - 1;
+                } else {
+                    $start = (int) $start;
+                }
+
+                if ($start <= $end) {
+                    if ($start < 0 || $end > $fileSize - 1) {
+                        $this->setStatusCode(416);
+                    } elseif ($start !== 0 || $end !== $fileSize - 1) {
+                        $this->maxlen = $end < $fileSize ? $end - $start + 1 : -1;
+                        $this->offset = $start;
+
+                        $this->setStatusCode(206);
+                        $this->headers->set('Content-Range', sprintf('bytes %s-%s/%s', $start, $end, $fileSize));
+                        $this->headers->set('Content-Length', $end - $start + 1);
+                    }
+                }
+            }
+        }
+
+        return $this;
+    }
+
+    /**
+     * Sends the file.
+     */
+    public function sendContent()
+    {
+        if (!$this->isSuccessful()) {
+            parent::sendContent();
+
+            return;
+        }
+
+        if (0 === $this->maxlen) {
+            return;
+        }
+
+        $out = fopen('php://output', 'wb');
+        $stream = $this->file->open('rb');
+
+        if(false !== $fileHandle = $stream->cast(STREAM_CAST_AS_STREAM)) {
+            // Utilise stream_copy_to_stream si le Stream nous renvoie un filehandle
+            stream_copy_to_stream($fileHandle, $out, $this->maxlen, $this->offset);
+        } else {
+            // Sinon, on fait ça à la main par blocs de 8ko
+            $stream->seek($this->offset);
+            for($i = floor($this->maxlen / 8192); $i > 0; $i--) {
+                fwrite($out, $stream->read(8192));
+            }
+            $remaining = $this->maxlen % 8192;
+            if($remaining > 0) {
+                fwrite($out, $stream->read($remaining));
+            }
+        }
+
+        $stream->close();
+        fclose($out);
+    }
+
+    /**
+     * {@inheritdoc}
+     *
+     * @throws LogicException when the content is not null
+     */
+    public function setContent($content)
+    {
+        if (null !== $content) {
+            throw new LogicException('The content cannot be set on a UploadedFileResponse instance.');
+        }
+    }
+
+    /**
+     * {@inheritdoc}
+     *
+     * @return false
+     */
+    public function getContent()
+    {
+        return false;
+    }
+}