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diff --git a/vendor/aws/aws-sdk-php/src/S3/MultipartCopy.php b/vendor/aws/aws-sdk-php/src/S3/MultipartCopy.php
new file mode 100644
index 0000000..e78a824
--- /dev/null
+++ b/vendor/aws/aws-sdk-php/src/S3/MultipartCopy.php
@@ -0,0 +1,242 @@
+<?php
+
+namespace Aws\S3;
+
+use Aws\Arn\ArnParser;
+use Aws\Multipart\AbstractUploadManager;
+use Aws\ResultInterface;
+use GuzzleHttp\Psr7;
+
+class MultipartCopy extends AbstractUploadManager
+{
+    use MultipartUploadingTrait;
+
+    /** @var string|array */
+    private $source;
+    /** @var string */
+    private $sourceVersionId;
+    /** @var ResultInterface */
+    private $sourceMetadata;
+
+    /**
+     * Creates a multipart upload for copying an S3 object.
+     *
+     * The valid configuration options are as follows:
+     *
+     * - acl: (string) ACL to set on the object being upload. Objects are
+     *   private by default.
+     * - before_complete: (callable) Callback to invoke before the
+     *   `CompleteMultipartUpload` operation. The callback should have a
+     *   function signature like `function (Aws\Command $command) {...}`.
+     * - before_initiate: (callable) Callback to invoke before the
+     *   `CreateMultipartUpload` operation. The callback should have a function
+     *   signature like `function (Aws\Command $command) {...}`.
+     * - before_upload: (callable) Callback to invoke before `UploadPartCopy`
+     *   operations. The callback should have a function signature like
+     *   `function (Aws\Command $command) {...}`.
+     * - bucket: (string, required) Name of the bucket to which the object is
+     *   being uploaded.
+     * - concurrency: (int, default=int(5)) Maximum number of concurrent
+     *   `UploadPart` operations allowed during the multipart upload.
+     * - key: (string, required) Key to use for the object being uploaded.
+     * - params: (array) An array of key/value parameters that will be applied
+     *   to each of the sub-commands run by the uploader as a base.
+     *   Auto-calculated options will override these parameters. If you need
+     *   more granularity over parameters to each sub-command, use the before_*
+     *   options detailed above to update the commands directly.
+     * - part_size: (int, default=int(5242880)) Part size, in bytes, to use when
+     *   doing a multipart upload. This must between 5 MB and 5 GB, inclusive.
+     * - state: (Aws\Multipart\UploadState) An object that represents the state
+     *   of the multipart upload and that is used to resume a previous upload.
+     *   When this option is provided, the `bucket`, `key`, and `part_size`
+     *   options are ignored.
+     * - source_metadata: (Aws\ResultInterface) An object that represents the
+     *   result of executing a HeadObject command on the copy source.
+     *
+     * @param S3ClientInterface $client Client used for the upload.
+     * @param string|array $source Location of the data to be copied (in the
+     *                       form /<bucket>/<key>).  If the key contains a '?'
+     *                       character, instead pass an array of source_key,
+     *                       source_bucket, and source_version_id.
+     * @param array $config Configuration used to perform the upload.
+     */
+    public function __construct(
+        S3ClientInterface $client,
+        $source,
+        array $config = []
+    ) {
+        if (is_array($source)) {
+            $this->source = $source;
+        } else {
+            $this->source = $this->getInputSource($source);
+        }
+        parent::__construct(
+            $client,
+            array_change_key_case($config) + ['source_metadata' => null]
+        );
+    }
+
+    /**
+     * An alias of the self::upload method.
+     *
+     * @see self::upload
+     */
+    public function copy()
+    {
+        return $this->upload();
+    }
+
+    protected function loadUploadWorkflowInfo()
+    {
+        return [
+            'command' => [
+                'initiate' => 'CreateMultipartUpload',
+                'upload' => 'UploadPartCopy',
+                'complete' => 'CompleteMultipartUpload',
+            ],
+            'id' => [
+                'bucket' => 'Bucket',
+                'key' => 'Key',
+                'upload_id' => 'UploadId',
+            ],
+            'part_num' => 'PartNumber',
+        ];
+    }
+
+    protected function getUploadCommands(callable $resultHandler)
+    {
+        $parts = ceil($this->getSourceSize() / $this->determinePartSize());
+
+        for ($partNumber = 1; $partNumber <= $parts; $partNumber++) {
+            // If we haven't already uploaded this part, yield a new part.
+            if (!$this->state->hasPartBeenUploaded($partNumber)) {
+                $command = $this->client->getCommand(
+                    $this->info['command']['upload'],
+                    $this->createPart($partNumber, $parts) + $this->getState()->getId()
+                );
+                $command->getHandlerList()->appendSign($resultHandler, 'mup');
+                yield $command;
+            }
+        }
+    }
+
+    private function createPart($partNumber, $partsCount)
+    {
+        $data = [];
+
+        // Apply custom params to UploadPartCopy data
+        $config = $this->getConfig();
+        $params = isset($config['params']) ? $config['params'] : [];
+        foreach ($params as $k => $v) {
+            $data[$k] = $v;
+        }
+        // The source parameter here is usually a string, but can be overloaded as an array
+        // if the key contains a '?' character to specify where the query parameters start
+        if (is_array($this->source)) {
+            $key = str_replace('%2F', '/', rawurlencode($this->source['source_key']));
+            $data['CopySource'] = '/' . $this->source['source_bucket'] . '/' . $key;
+        } else {
+
+            list($bucket, $key) = explode('/', ltrim($this->source, '/'), 2);
+            $data['CopySource'] = '/' . $bucket . '/' . implode(
+            '/',
+            array_map(
+                'urlencode',
+                explode('/', rawurldecode($key))
+            )
+        );
+        }
+        $data['PartNumber'] = $partNumber;
+        if (!empty($this->sourceVersionId)) {
+            $data['CopySource'] .= "?versionId=" . $this->sourceVersionId;
+        }
+
+        $defaultPartSize = $this->determinePartSize();
+        $startByte = $defaultPartSize * ($partNumber - 1);
+        $data['ContentLength'] = $partNumber < $partsCount
+            ? $defaultPartSize
+            : $this->getSourceSize() - ($defaultPartSize * ($partsCount - 1));
+        $endByte = $startByte + $data['ContentLength'] - 1;
+        $data['CopySourceRange'] = "bytes=$startByte-$endByte";
+
+        return $data;
+    }
+
+    protected function extractETag(ResultInterface $result)
+    {
+        return $result->search('CopyPartResult.ETag');
+    }
+
+    protected function getSourceMimeType()
+    {
+        return $this->getSourceMetadata()['ContentType'];
+    }
+
+    protected function getSourceSize()
+    {
+        return $this->getSourceMetadata()['ContentLength'];
+    }
+
+    private function getSourceMetadata()
+    {
+        if (empty($this->sourceMetadata)) {
+            $this->sourceMetadata = $this->fetchSourceMetadata();
+        }
+
+        return $this->sourceMetadata;
+    }
+
+    private function fetchSourceMetadata()
+    {
+        if ($this->config['source_metadata'] instanceof ResultInterface) {
+            return $this->config['source_metadata'];
+        }
+        //if the source variable was overloaded with an array, use the inputs for key and bucket
+        if (is_array($this->source)) {
+            $headParams = [
+                'Key' => $this->source['source_key'],
+                'Bucket' => $this->source['source_bucket']
+            ];
+            if (isset($this->source['source_version_id'])) {
+                $this->sourceVersionId = $this->source['source_version_id'];
+                $headParams['VersionId'] = $this->sourceVersionId;
+            }
+        //otherwise, use the default source parsing behavior
+        } else {
+            list($bucket, $key) = explode('/', ltrim($this->source, '/'), 2);
+            $headParams = [
+                'Bucket' => $bucket,
+                'Key' => $key,
+            ];
+            if (strpos($key, '?')) {
+                list($key, $query) = explode('?', $key, 2);
+                $headParams['Key'] = $key;
+                $query = Psr7\Query::parse($query, false);
+                if (isset($query['versionId'])) {
+                    $this->sourceVersionId = $query['versionId'];
+                    $headParams['VersionId'] = $this->sourceVersionId;
+                }
+            }
+        }
+        return $this->client->headObject($headParams);
+    }
+
+    /**
+     * Get the url decoded input source, starting with a slash if it is not an
+     * ARN to standardize the source location syntax.
+     *
+     * @param string $inputSource The source that was passed to the constructor
+     * @return string The source, starting with a slash if it's not an arn
+     */
+    private function getInputSource($inputSource)
+    {
+        if (ArnParser::isArn($inputSource)) {
+            $sourceBuilder = '';
+        } else {
+            $sourceBuilder = "/";
+        }
+        $sourceBuilder .= ltrim(rawurldecode($inputSource), '/');
+        return $sourceBuilder;
+    }
+
+}