Release of v5.1.1-alpha1

Move all banners to GitHub. Adds library phpspreadsheet to JCB. Adds import item example to demo component. Updates the Superpower class with the GetRemote class in the plugin. Ensures the super power autoloader triggers the correct repositories.

libraries/phpspreadsheet/vendor/maennchen/zipstream-php/guides/ContentLength.rst

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+Adding Content-Length header
+=============
+
+Adding a ``Content-Length`` header for ``ZipStream`` can be achieved by
+using the options ``SIMULATION_STRICT`` or ``SIMULATION_LAX`` in the
+``operationMode`` parameter.
+
+In the ``SIMULATION_STRICT`` mode, ``ZipStream`` will not allow to calculate the
+size based on reading the whole file. ``SIMULATION_LAX`` will read the whole
+file if neccessary.
+
+``SIMULATION_STRICT`` is therefore useful to make sure that the size can be
+calculated efficiently.
+
+.. code-block:: php
+    use ZipStream\OperationMode;
+    use ZipStream\ZipStream;
+
+    $zip = new ZipStream(
+        operationMode: OperationMode::SIMULATE_STRICT, // or SIMULATE_LAX
+        defaultEnableZeroHeader: false,
+        sendHttpHeaders: true,
+        outputStream: $stream,
+    );
+
+    // Normally add files
+    $zip->addFile('sample.txt', 'Sample String Data');
+
+    // Use addFileFromCallback and exactSize if you want to defer opening of
+    // the file resource
+    $zip->addFileFromCallback(
+        'sample.txt',
+        exactSize: 18,
+        callback: function () {
+            return fopen('...');
+        }
+    );
+
+    // Read resulting file size
+    $size = $zip->finish();
+    
+    // Tell it to the browser
+    header('Content-Length: '. $size);
+    
+    // Execute the Simulation and stream the actual zip to the client
+    $zip->executeSimulation();
+

libraries/phpspreadsheet/vendor/maennchen/zipstream-php/guides/FlySystem.rst

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+Usage with FlySystem
+===============
+
+For saving or uploading the generated zip, you can use the
+`Flysystem <https://flysystem.thephpleague.com>`_ package, and its many
+adapters.
+
+For that you will need to provide another stream than the ``php://output``
+default one, and pass it to Flysystem ``putStream`` method.
+
+.. code-block:: php
+
+    // Open Stream only once for read and write since it's a memory stream and
+    // the content is lost when closing the stream / opening another one
+    $tempStream = fopen('php://memory', 'w+');
+
+    // Create Zip Archive
+    $zipStream = new ZipStream(
+        outputStream: $tempStream,
+        outputName: 'test.zip',
+    );
+    $zipStream->addFile('test.txt', 'text');
+    $zipStream->finish();
+
+    // Store File
+    // (see Flysystem documentation, and all its framework integration)
+    // Can be any adapter (AWS, Google, Ftp, etc.)
+    $adapter = new Local(__DIR__.'/path/to/folder');
+    $filesystem = new Filesystem($adapter);
+
+    $filesystem->writeStream('test.zip', $tempStream)
+
+    // Close Stream
+    fclose($tempStream);

libraries/phpspreadsheet/vendor/maennchen/zipstream-php/guides/Nginx.rst

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+Usage with nginx
+=============
+
+If you are using nginx as a webserver, it will try to buffer the response.
+So you'll want to disable this with a custom header:
+
+.. code-block:: php
+    header('X-Accel-Buffering: no');
+    # or with the Response class from Symfony
+    $response->headers->set('X-Accel-Buffering', 'no');
+
+Alternatively, you can tweak the
+`fastcgi cache parameters <https://nginx.org/en/docs/http/ngx_http_fastcgi_module.html#fastcgi_buffers>`_
+within nginx config.
+
+See `original issue <https://github.com/maennchen/ZipStream-PHP/issues/77>`_.

libraries/phpspreadsheet/vendor/maennchen/zipstream-php/guides/Options.rst

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+Available options
+===============
+
+Here is the full list of options available to you. You can also have a look at
+``src/ZipStream.php`` file.
+
+.. code-block:: php
+
+    use ZipStream\ZipStream;
+
+    require_once 'vendor/autoload.php';
+
+    $zip = new ZipStream(
+        // Define output stream
+        // (argument is eiter a resource or implementing
+        // `Psr\Http\Message\StreamInterface`)
+        //
+        // Setup with `psr/http-message` & `guzzlehttp/psr7` dependencies
+        // required when using `Psr\Http\Message\StreamInterface`.
+        outputStream: $filePointer,
+
+        // Set the deflate level (default is 6; use -1 to disable it)
+        defaultDeflateLevel: 6,
+
+        // Add a comment to the zip file
+        comment: 'This is a comment.',
+
+        // Send http headers (default is true)
+        sendHttpHeaders: false,
+
+        // HTTP Content-Disposition.
+        // Defaults to 'attachment', where FILENAME is the specified filename.
+        // Note that this does nothing if you are not sending HTTP headers.
+        contentDisposition: 'attachment',
+
+        // Output Name for HTTP Content-Disposition
+        // Defaults to no name
+        outputName: "example.zip",
+
+        // HTTP Content-Type.
+        // Defaults to 'application/x-zip'.
+        // Note that this does nothing if you are not sending HTTP headers.
+        contentType: 'application/x-zip',
+
+        // Set the function called for setting headers.
+        // Default is the `header()` of PHP
+        httpHeaderCallback: header(...),
+
+        // Enable streaming files with single read where general purpose bit 3
+        // indicates local file header contain zero values in crc and size
+        // fields, these appear only after file contents in data descriptor
+        // block.
+        // Set to true if your input stream is remote
+        // (used with addFileFromStream()).
+        // Default is false.
+        defaultEnableZeroHeader: false,
+
+        // Enable zip64 extension, allowing very large archives
+        // (> 4Gb or file count > 64k)
+        // Default is true
+        enableZip64: true,
+
+        // Flush output buffer after every write
+        // Default is false
+        flushOutput: true,
+    );

libraries/phpspreadsheet/vendor/maennchen/zipstream-php/guides/PSR7Streams.rst

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+Usage with PSR 7 Streams
+===============
+
+PSR-7 streams are `standardized streams <https://www.php-fig.org/psr/psr-7/>`_.
+
+ZipStream-PHP supports working with these streams with the function
+``addFileFromPsr7Stream``. 
+
+For all parameters of the function see the API documentation.
+
+Example
+---------------
+
+.. code-block:: php
+
+    $stream = $response->getBody();
+    // add a file named 'streamfile.txt' from the content of the stream
+    $zip->addFileFromPsr7Stream(
+        fileName: 'streamfile.txt',
+        stream: $stream,
+    );

libraries/phpspreadsheet/vendor/maennchen/zipstream-php/guides/StreamOutput.rst

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+Stream Output
+===============
+
+Stream to S3 Bucket
+---------------
+
+.. code-block:: php
+
+    use Aws\S3\S3Client;
+    use Aws\Credentials\CredentialProvider;
+    use ZipStream\ZipStream;
+
+    $bucket = 'your bucket name';
+    $client = new S3Client([
+        'region' => 'your region',
+        'version' => 'latest',
+        'bucketName' => $bucket,
+        'credentials' => CredentialProvider::defaultProvider(),
+    ]);
+    $client->registerStreamWrapper();
+
+    $zipFile = fopen("s3://$bucket/example.zip", 'w');
+
+    $zip = new ZipStream(
+        enableZip64: false,
+        outputStream: $zipFile,
+    );
+
+    $zip->addFile(
+        fileName: 'file1.txt',
+        data: 'File1 data',
+    );
+    $zip->addFile(
+        fileName: 'file2.txt',
+        data: 'File2 data',
+    );
+    $zip->finish();
+
+    fclose($zipFile);

libraries/phpspreadsheet/vendor/maennchen/zipstream-php/guides/Symfony.rst

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+Usage with Symfony
+===============
+
+Overview for using ZipStream in Symfony
+--------
+
+Using ZipStream in Symfony requires use of Symfony's ``StreamedResponse`` when
+used in controller actions.
+
+Wrap your call to the relevant ``ZipStream`` stream method (i.e. ``addFile``,
+``addFileFromPath``, ``addFileFromStream``) in Symfony's ``StreamedResponse``
+function passing in any required arguments for your use case.
+
+Using Symfony's ``StreamedResponse`` will allow Symfony to stream output from
+ZipStream correctly to users' browsers and avoid a corrupted final zip landing
+on the users' end.
+
+Example for using ``ZipStream`` in a controller action to zip stream files
+stored in an AWS S3 bucket by key:
+
+.. code-block:: php
+
+    use Symfony\Component\HttpFoundation\StreamedResponse;
+    use Aws\S3\S3Client;
+    use ZipStream;
+
+    //...
+
+    /**
+    * @Route("/zipstream", name="zipstream")
+    */
+    public function zipStreamAction()
+    {
+        // sample test file on s3
+        $s3keys = array(
+        "ziptestfolder/file1.txt"
+        );
+
+        $s3Client = $this->get('app.amazon.s3'); //s3client service
+        $s3Client->registerStreamWrapper(); //required
+
+        // using StreamedResponse to wrap ZipStream functionality
+        // for files on AWS s3.
+        $response = new StreamedResponse(function() use($s3keys, $s3Client)
+        {
+            // Define suitable options for ZipStream Archive.
+            // this is needed to prevent issues with truncated zip files
+            //initialise zipstream with output zip filename and options.
+            $zip = new ZipStream\ZipStream(
+                outputName: 'test.zip',
+                defaultEnableZeroHeader: true,
+                contentType: 'application/octet-stream',
+            );
+
+            //loop keys - useful for multiple files
+            foreach ($s3keys as $key) {
+                // Get the file name in S3 key so we can save it to the zip
+                //file using the same name.
+                $fileName = basename($key);
+
+                // concatenate s3path.
+                // replace with your bucket name or get from parameters file.
+                $bucket = 'bucketname';
+                $s3path = "s3://" . $bucket . "/" . $key;
+
+                //addFileFromStream
+                if ($streamRead = fopen($s3path, 'r')) {
+                    $zip->addFileFromStream(
+                        fileName: $fileName,
+                        stream: $streamRead,
+                    );
+                } else {
+                    die('Could not open stream for reading');
+                }
+            }
+
+            $zip->finish();
+
+        });
+
+        return $response;
+    }
+
+In the above example, files on AWS S3 are being streamed from S3 to the Symfon
+application via ``fopen`` call when the s3Client has ``registerStreamWrapper``
+applied. This stream is then passed to ``ZipStream`` via the
+``addFileFromStream`` function, which ZipStream then streams as a zip to the
+client browser via Symfony's ``StreamedResponse``. No Zip is created server
+side, which makes this approach a more efficient solution for streaming zips to
+the client browser especially for larger files.
+
+For the above use case you will need to have installed
+`aws/aws-sdk-php-symfony <https://github.com/aws/aws-sdk-php-symfony>`_ to
+support accessing S3 objects in your Symfony web application. This is not
+required for locally stored files on you server you intend to stream via
+``ZipStream``.
+
+See official Symfony documentation for details on
+`Symfony's StreamedResponse <https://symfony.com/doc/current/components/http_foundation.html#streaming-a-response>`_ 
+``Symfony\Component\HttpFoundation\StreamedResponse``.
+
+Note from `S3 documentation <https://docs.aws.amazon.com/sdk-for-php/v3/developer-guide/s3-stream-wrapper.html>`_:
+
+    Streams opened in "r" mode only allow data to be read from the stream, and
+    are not seekable by default. This is so that data can be downloaded from
+    Amazon S3 in a truly streaming manner, where previously read bytes do not
+    need to be buffered into memory. If you need a stream to be seekable, you
+    can pass seekable into the stream context options of a function.
+
+Make sure to configure your S3 context correctly!
+
+Uploading a file
+--------
+
+You need to add correct permissions
+(see `#120 <https://github.com/maennchen/ZipStream-PHP/issues/120>`_)
+
+**example code**
+
+
+.. code-block:: php
+
+    $path = "s3://{$adapter->getBucket()}/{$this->getArchivePath()}";
+
+    // the important bit
+    $outputContext = stream_context_create([
+        's3' => ['ACL' => 'public-read'],
+    ]);
+
+    fopen($path, 'w', null, $outputContext);

libraries/phpspreadsheet/vendor/maennchen/zipstream-php/guides/Varnish.rst

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+Usage with Varnish
+=============
+
+Serving a big zip with varnish in between can cause random stream close.
+This can be solved by adding attached code to the vcl file.
+
+To avoid the problem, add the following to your varnish config file:
+
+.. code-block::
+    sub vcl_recv {
+        # Varnish can’t intercept the discussion anymore
+        # helps for streaming big zips
+        if (req.url ~ "\.(tar|gz|zip|7z|exe)$") {
+            return (pipe);
+        }
+    }
+    # Varnish can’t intercept the discussion anymore
+    # helps for streaming big zips
+    sub vcl_pipe {
+        set bereq.http.connection = "close";
+        return (pipe);
+    }

libraries/phpspreadsheet/vendor/maennchen/zipstream-php/guides/index.rst

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+ZipStream PHP
+=============
+
+A fast and simple streaming zip file downloader for PHP. Using this library will
+save you from having to write the Zip to disk. You can directly send it to the
+user, which is much faster. It can work with S3 buckets or any PSR7 Stream.
+
+.. toctree::
+
+   index
+   Symfony
+   Options
+   StreamOutput
+   FlySystem
+   PSR7Streams
+   Nginx
+   Varnish
+   ContentLength
+
+Installation
+---------------
+
+Simply add a dependency on ``maennchen/zipstream-php`` to your project's
+``composer.json`` file if you use Composer to manage the dependencies of your
+project. Use following command to add the package to your project's
+dependencies:
+
+.. code-block:: sh
+   composer require maennchen/zipstream-php
+
+If you want to use``addFileFromPsr7Stream```
+(``Psr\Http\Message\StreamInterface``) or use a stream instead of a
+``resource`` as ``outputStream``, the following dependencies must be installed
+as well:
+
+.. code-block:: sh
+   composer require psr/http-message guzzlehttp/psr7
+
+If ``composer install`` yields the following error, your installation is missing
+the `mbstring extension <https://www.php.net/manual/en/book.mbstring.php>`_,
+either `install it <https://www.php.net/manual/en/mbstring.installation.php>`_
+or run the follwoing command:
+
+.. code-block::
+    Your requirements could not be resolved to an installable set of packages.
+
+    Problem 1
+        - Root composer.json requires PHP extension ext-mbstring * but it is
+          missing from your system. Install or enable PHP's mbstrings extension.
+
+.. code-block:: sh
+   composer require symfony/polyfill-mbstring
+
+Usage Intro
+---------------
+
+Here's a simple example:
+
+.. code-block:: php
+
+   // Autoload the dependencies
+   require 'vendor/autoload.php';
+
+   // create a new zipstream object
+   $zip = new ZipStream\ZipStream(
+      outputName: 'example.zip',
+
+      // enable output of HTTP headers
+      sendHttpHeaders: true,
+   );
+
+   // create a file named 'hello.txt'
+   $zip->addFile(
+      fileName: 'hello.txt',
+      data: 'This is the contents of hello.txt',
+   );
+
+   // add a file named 'some_image.jpg' from a local file 'path/to/image.jpg'
+   $zip->addFileFromPath(
+      fileName: 'some_image.jpg',
+      path: 'path/to/image.jpg',
+   );
+
+   // add a file named 'goodbye.txt' from an open stream resource
+   $filePointer = tmpfile();
+   fwrite($filePointer, 'The quick brown fox jumped over the lazy dog.');
+   rewind($filePointer);
+   $zip->addFileFromStream(
+      fileName: 'goodbye.txt',
+      stream: $filePointer,
+   );
+   fclose($filePointer);
+
+   // add a file named 'streamfile.txt' from the body of a `guzzle` response
+   // Setup with `psr/http-message` & `guzzlehttp/psr7` dependencies required.
+   $zip->addFileFromPsr7Stream(
+      fileName: 'streamfile.txt',
+      stream: $response->getBody(),
+   );
+
+   // finish the zip stream
+   $zip->finish();
+
+You can also add comments, modify file timestamps, and customize (or
+disable) the HTTP headers. It is also possible to specify the storage method
+when adding files, the current default storage method is ``DEFLATE``
+i.e files are stored with Compression mode 0x08.
+
+Known Issues
+---------------
+
+The native Mac OS archive extraction tool prior to macOS 10.15 might not open
+archives in some conditions. A workaround is to disable the Zip64 feature with
+the option ``enableZip64: false``. This limits the archive to 4 Gb and 64k files
+but will allow users on macOS 10.14 and below to open them without issue.
+See `#116 <https://github.com/maennchen/ZipStream-PHP/issues/146>`_.
+
+The linux ``unzip`` utility might not handle properly unicode characters.
+It is recommended to extract with another tool like
+`7-zip <https://www.7-zip.org/>`_.
+See `#146 <https://github.com/maennchen/ZipStream-PHP/issues/146>`_.
+
+It is the responsability of the client code to make sure that files are not
+saved with the same path, as it is not possible for the library to figure it out
+while streaming a zip.
+See `#154 <https://github.com/maennchen/ZipStream-PHP/issues/154>`_.