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vendor/symfony/http-client/Internal/AmpBody.php

@@ -0,0 +1,142 @@
+<?php
+
+/*
+ * This file is part of the Symfony package.
+ *
+ * (c) Fabien Potencier <fabien@symfony.com>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace Symfony\Component\HttpClient\Internal;
+
+use Amp\ByteStream\InputStream;
+use Amp\ByteStream\ResourceInputStream;
+use Amp\Http\Client\RequestBody;
+use Amp\Promise;
+use Amp\Success;
+use Symfony\Component\HttpClient\Exception\TransportException;
+
+/**
+ * @author Nicolas Grekas <p@tchwork.com>
+ *
+ * @internal
+ */
+class AmpBody implements RequestBody, InputStream
+{
+    private $body;
+    private $info;
+    private $onProgress;
+    private $offset = 0;
+    private $length = -1;
+    private $uploaded;
+
+    public function __construct($body, &$info, \Closure $onProgress)
+    {
+        $this->body = $body;
+        $this->info = &$info;
+        $this->onProgress = $onProgress;
+
+        if (\is_resource($body)) {
+            $this->offset = ftell($body);
+            $this->length = fstat($body)['size'];
+            $this->body = new ResourceInputStream($body);
+        } elseif (\is_string($body)) {
+            $this->length = \strlen($body);
+        }
+    }
+
+    public function createBodyStream(): InputStream
+    {
+        if (null !== $this->uploaded) {
+            $this->uploaded = null;
+
+            if (\is_string($this->body)) {
+                $this->offset = 0;
+            } elseif ($this->body instanceof ResourceInputStream) {
+                fseek($this->body->getResource(), $this->offset);
+            }
+        }
+
+        return $this;
+    }
+
+    public function getHeaders(): Promise
+    {
+        return new Success([]);
+    }
+
+    public function getBodyLength(): Promise
+    {
+        return new Success($this->length - $this->offset);
+    }
+
+    public function read(): Promise
+    {
+        $this->info['size_upload'] += $this->uploaded;
+        $this->uploaded = 0;
+        ($this->onProgress)();
+
+        $chunk = $this->doRead();
+        $chunk->onResolve(function ($e, $data) {
+            if (null !== $data) {
+                $this->uploaded = \strlen($data);
+            } else {
+                $this->info['upload_content_length'] = $this->info['size_upload'];
+            }
+        });
+
+        return $chunk;
+    }
+
+    public static function rewind(RequestBody $body): RequestBody
+    {
+        if (!$body instanceof self) {
+            return $body;
+        }
+
+        $body->uploaded = null;
+
+        if ($body->body instanceof ResourceInputStream) {
+            fseek($body->body->getResource(), $body->offset);
+
+            return new $body($body->body, $body->info, $body->onProgress);
+        }
+
+        if (\is_string($body->body)) {
+            $body->offset = 0;
+        }
+
+        return $body;
+    }
+
+    private function doRead(): Promise
+    {
+        if ($this->body instanceof ResourceInputStream) {
+            return $this->body->read();
+        }
+
+        if (null === $this->offset || !$this->length) {
+            return new Success();
+        }
+
+        if (\is_string($this->body)) {
+            $this->offset = null;
+
+            return new Success($this->body);
+        }
+
+        if ('' === $data = ($this->body)(16372)) {
+            $this->offset = null;
+
+            return new Success();
+        }
+
+        if (!\is_string($data)) {
+            throw new TransportException(sprintf('Return value of the "body" option callback must be string, "%s" returned.', get_debug_type($data)));
+        }
+
+        return new Success($data);
+    }
+}