Proyectos de Subversion Moodle

<?php

namespace PhpOffice\PhpSpreadsheet\Writer;

use PhpOffice\PhpSpreadsheet\Calculation\Calculation;

use PhpOffice\PhpSpreadsheet\Calculation\Functions;

use PhpOffice\PhpSpreadsheet\HashTable;

use PhpOffice\PhpSpreadsheet\Spreadsheet;

use PhpOffice\PhpSpreadsheet\Style\Borders;

use PhpOffice\PhpSpreadsheet\Style\Conditional;

use PhpOffice\PhpSpreadsheet\Style\Fill;

use PhpOffice\PhpSpreadsheet\Style\Font;

use PhpOffice\PhpSpreadsheet\Style\NumberFormat;

use PhpOffice\PhpSpreadsheet\Worksheet\BaseDrawing;

use PhpOffice\PhpSpreadsheet\Worksheet\Drawing as WorksheetDrawing;

use PhpOffice\PhpSpreadsheet\Worksheet\MemoryDrawing;

use PhpOffice\PhpSpreadsheet\Writer\Exception as WriterException;

use PhpOffice\PhpSpreadsheet\Writer\Xlsx\Chart;

use PhpOffice\PhpSpreadsheet\Writer\Xlsx\Comments;

use PhpOffice\PhpSpreadsheet\Writer\Xlsx\ContentTypes;

use PhpOffice\PhpSpreadsheet\Writer\Xlsx\DocProps;

use PhpOffice\PhpSpreadsheet\Writer\Xlsx\Drawing;

use PhpOffice\PhpSpreadsheet\Writer\Xlsx\Rels;

use PhpOffice\PhpSpreadsheet\Writer\Xlsx\RelsRibbon;

use PhpOffice\PhpSpreadsheet\Writer\Xlsx\RelsVBA;

use PhpOffice\PhpSpreadsheet\Writer\Xlsx\StringTable;

use PhpOffice\PhpSpreadsheet\Writer\Xlsx\Style;

use PhpOffice\PhpSpreadsheet\Writer\Xlsx\Table;

use PhpOffice\PhpSpreadsheet\Writer\Xlsx\Theme;

use PhpOffice\PhpSpreadsheet\Writer\Xlsx\Workbook;

use PhpOffice\PhpSpreadsheet\Writer\Xlsx\Worksheet;

use ZipArchive;

use ZipStream\Exception\OverflowException;

use ZipStream\ZipStream;

class Xlsx extends BaseWriter

{

    /**

     * Office2003 compatibility.

     *

     * @var bool

     */

    private $office2003compatibility = false;

    /**

     * Private Spreadsheet.

     *

     * @var Spreadsheet

     */

    private $spreadSheet;

    /**

     * Private string table.

     *

     * @var string[]

     */

    private $stringTable = [];

    /**

     * Private unique Conditional HashTable.

     *

     * @var HashTable<Conditional>

     */

    private $stylesConditionalHashTable;

    /**

     * Private unique Style HashTable.

     *

     * @var HashTable<\PhpOffice\PhpSpreadsheet\Style\Style>

     */

    private $styleHashTable;

    /**

     * Private unique Fill HashTable.

     *

     * @var HashTable<Fill>

     */

    private $fillHashTable;

    /**

     * Private unique \PhpOffice\PhpSpreadsheet\Style\Font HashTable.

     *

     * @var HashTable<Font>

     */

    private $fontHashTable;

    /**

     * Private unique Borders HashTable.

     *

     * @var HashTable<Borders>

     */

    private $bordersHashTable;

    /**

     * Private unique NumberFormat HashTable.

     *

     * @var HashTable<NumberFormat>

     */

    private $numFmtHashTable;

    /**

     * Private unique \PhpOffice\PhpSpreadsheet\Worksheet\Worksheet\BaseDrawing HashTable.

     *

     * @var HashTable<BaseDrawing>

     */

    private $drawingHashTable;

    /**

     * Private handle for zip stream.

     *

     * @var ZipStream

     */

    private $zip;

    /**

     * @var Chart

     */

    private $writerPartChart;

    /**

     * @var Comments

     */

    private $writerPartComments;

    /**

     * @var ContentTypes

     */

    private $writerPartContentTypes;

    /**

     * @var DocProps

     */

    private $writerPartDocProps;

    /**

     * @var Drawing

     */

    private $writerPartDrawing;

    /**

     * @var Rels

     */

    private $writerPartRels;

    /**

     * @var RelsRibbon

     */

    private $writerPartRelsRibbon;

    /**

     * @var RelsVBA

     */

    private $writerPartRelsVBA;

    /**

     * @var StringTable

     */

    private $writerPartStringTable;

    /**

     * @var Style

     */

    private $writerPartStyle;

    /**

     * @var Theme

     */

    private $writerPartTheme;

    /**

     * @var Table

     */

    private $writerPartTable;

    /**

     * @var Workbook

     */

    private $writerPartWorkbook;

    /**

     * @var Worksheet

     */

    private $writerPartWorksheet;

    /**

     * Create a new Xlsx Writer.

     */

    public function __construct(Spreadsheet $spreadsheet)

    {

        // Assign PhpSpreadsheet

        $this->setSpreadsheet($spreadsheet);

        $this->writerPartChart = new Chart($this);

        $this->writerPartComments = new Comments($this);

        $this->writerPartContentTypes = new ContentTypes($this);

        $this->writerPartDocProps = new DocProps($this);

        $this->writerPartDrawing = new Drawing($this);

        $this->writerPartRels = new Rels($this);

        $this->writerPartRelsRibbon = new RelsRibbon($this);

        $this->writerPartRelsVBA = new RelsVBA($this);

        $this->writerPartStringTable = new StringTable($this);

        $this->writerPartStyle = new Style($this);

        $this->writerPartTheme = new Theme($this);

        $this->writerPartTable = new Table($this);

        $this->writerPartWorkbook = new Workbook($this);

        $this->writerPartWorksheet = new Worksheet($this);

        // Set HashTable variables

        // @phpstan-ignore-next-line

        $this->bordersHashTable = new HashTable();

        // @phpstan-ignore-next-line

        $this->drawingHashTable = new HashTable();

        // @phpstan-ignore-next-line

        $this->fillHashTable = new HashTable();

        // @phpstan-ignore-next-line

        $this->fontHashTable = new HashTable();

        // @phpstan-ignore-next-line

        $this->numFmtHashTable = new HashTable();

        // @phpstan-ignore-next-line

        $this->styleHashTable = new HashTable();

        // @phpstan-ignore-next-line

        $this->stylesConditionalHashTable = new HashTable();

    }

    public function getWriterPartChart(): Chart

    {

        return $this->writerPartChart;

    }

    public function getWriterPartComments(): Comments

    {

        return $this->writerPartComments;

    }

    public function getWriterPartContentTypes(): ContentTypes

    {

        return $this->writerPartContentTypes;

    }

    public function getWriterPartDocProps(): DocProps

    {

        return $this->writerPartDocProps;

    }

    public function getWriterPartDrawing(): Drawing

    {

        return $this->writerPartDrawing;

    }

    public function getWriterPartRels(): Rels

    {

        return $this->writerPartRels;

    }

    public function getWriterPartRelsRibbon(): RelsRibbon

    {

        return $this->writerPartRelsRibbon;

    }

    public function getWriterPartRelsVBA(): RelsVBA

    {

        return $this->writerPartRelsVBA;

    }

    public function getWriterPartStringTable(): StringTable

    {

        return $this->writerPartStringTable;

    }

    public function getWriterPartStyle(): Style

    {

        return $this->writerPartStyle;

    }

    public function getWriterPartTheme(): Theme

    {

        return $this->writerPartTheme;

    }

    public function getWriterPartTable(): Table

    {

        return $this->writerPartTable;

    }

    public function getWriterPartWorkbook(): Workbook

    {

        return $this->writerPartWorkbook;

    }

    public function getWriterPartWorksheet(): Worksheet

    {

        return $this->writerPartWorksheet;

    }

    /**

     * Save PhpSpreadsheet to file.

     *

     * @param resource|string $filename

     */

    public function save($filename, int $flags = 0): void

    {

        $this->processFlags($flags);

        // garbage collect

        $this->pathNames = [];

        $this->spreadSheet->garbageCollect();

        $saveDebugLog = Calculation::getInstance($this->spreadSheet)->getDebugLog()->getWriteDebugLog();

        Calculation::getInstance($this->spreadSheet)->getDebugLog()->setWriteDebugLog(false);

        $saveDateReturnType = Functions::getReturnDateType();

        Functions::setReturnDateType(Functions::RETURNDATE_EXCEL);

        // Create string lookup table

        $this->stringTable = [];

        for ($i = 0; $i < $this->spreadSheet->getSheetCount(); ++$i) {

            $this->stringTable = $this->getWriterPartStringTable()->createStringTable($this->spreadSheet->getSheet($i), $this->stringTable);

        }

        // Create styles dictionaries

        $this->styleHashTable->addFromSource($this->getWriterPartStyle()->allStyles($this->spreadSheet));

        $this->stylesConditionalHashTable->addFromSource($this->getWriterPartStyle()->allConditionalStyles($this->spreadSheet));

        $this->fillHashTable->addFromSource($this->getWriterPartStyle()->allFills($this->spreadSheet));

        $this->fontHashTable->addFromSource($this->getWriterPartStyle()->allFonts($this->spreadSheet));

        $this->bordersHashTable->addFromSource($this->getWriterPartStyle()->allBorders($this->spreadSheet));

        $this->numFmtHashTable->addFromSource($this->getWriterPartStyle()->allNumberFormats($this->spreadSheet));

        // Create drawing dictionary

        $this->drawingHashTable->addFromSource($this->getWriterPartDrawing()->allDrawings($this->spreadSheet));

        $zipContent = [];

        // Add [Content_Types].xml to ZIP file

        $zipContent['[Content_Types].xml'] = $this->getWriterPartContentTypes()->writeContentTypes($this->spreadSheet, $this->includeCharts);

        //if hasMacros, add the vbaProject.bin file, Certificate file(if exists)

        if ($this->spreadSheet->hasMacros()) {

            $macrosCode = $this->spreadSheet->getMacrosCode();

            if ($macrosCode !== null) {

                // we have the code ?

                $zipContent['xl/vbaProject.bin'] = $macrosCode; //allways in 'xl', allways named vbaProject.bin

                if ($this->spreadSheet->hasMacrosCertificate()) {

                    //signed macros ?

                    // Yes : add the certificate file and the related rels file

                    $zipContent['xl/vbaProjectSignature.bin'] = $this->spreadSheet->getMacrosCertificate();

                    $zipContent['xl/_rels/vbaProject.bin.rels'] = $this->getWriterPartRelsVBA()->writeVBARelationships();

                }

            }

        }

        //a custom UI in this workbook ? add it ("base" xml and additional objects (pictures) and rels)

        if ($this->spreadSheet->hasRibbon()) {

            $tmpRibbonTarget = $this->spreadSheet->getRibbonXMLData('target');

            $tmpRibbonTarget = is_string($tmpRibbonTarget) ? $tmpRibbonTarget : '';

            $zipContent[$tmpRibbonTarget] = $this->spreadSheet->getRibbonXMLData('data');

            if ($this->spreadSheet->hasRibbonBinObjects()) {

                $tmpRootPath = dirname($tmpRibbonTarget) . '/';

                $ribbonBinObjects = $this->spreadSheet->getRibbonBinObjects('data'); //the files to write

                if (is_array($ribbonBinObjects)) {

                    foreach ($ribbonBinObjects as $aPath => $aContent) {

                        $zipContent[$tmpRootPath . $aPath] = $aContent;

                    }

                }

                //the rels for files

                $zipContent[$tmpRootPath . '_rels/' . basename($tmpRibbonTarget) . '.rels'] = $this->getWriterPartRelsRibbon()->writeRibbonRelationships($this->spreadSheet);

            }

        }

        // Add relationships to ZIP file

        $zipContent['_rels/.rels'] = $this->getWriterPartRels()->writeRelationships($this->spreadSheet);

        $zipContent['xl/_rels/workbook.xml.rels'] = $this->getWriterPartRels()->writeWorkbookRelationships($this->spreadSheet);

        // Add document properties to ZIP file

        $zipContent['docProps/app.xml'] = $this->getWriterPartDocProps()->writeDocPropsApp($this->spreadSheet);

        $zipContent['docProps/core.xml'] = $this->getWriterPartDocProps()->writeDocPropsCore($this->spreadSheet);

        $customPropertiesPart = $this->getWriterPartDocProps()->writeDocPropsCustom($this->spreadSheet);

        if ($customPropertiesPart !== null) {

            $zipContent['docProps/custom.xml'] = $customPropertiesPart;

        }

        // Add theme to ZIP file

        $zipContent['xl/theme/theme1.xml'] = $this->getWriterPartTheme()->writeTheme($this->spreadSheet);

        // Add string table to ZIP file

        $zipContent['xl/sharedStrings.xml'] = $this->getWriterPartStringTable()->writeStringTable($this->stringTable);

        // Add styles to ZIP file

        $zipContent['xl/styles.xml'] = $this->getWriterPartStyle()->writeStyles($this->spreadSheet);

        // Add workbook to ZIP file

        $zipContent['xl/workbook.xml'] = $this->getWriterPartWorkbook()->writeWorkbook($this->spreadSheet, $this->preCalculateFormulas);

        $chartCount = 0;

        // Add worksheets

        for ($i = 0; $i < $this->spreadSheet->getSheetCount(); ++$i) {

            $zipContent['xl/worksheets/sheet' . ($i + 1) . '.xml'] = $this->getWriterPartWorksheet()->writeWorksheet($this->spreadSheet->getSheet($i), $this->stringTable, $this->includeCharts);

            if ($this->includeCharts) {

                $charts = $this->spreadSheet->getSheet($i)->getChartCollection();

                if (count($charts) > 0) {

                    foreach ($charts as $chart) {

                        $zipContent['xl/charts/chart' . ($chartCount + 1) . '.xml'] = $this->getWriterPartChart()->writeChart($chart, $this->preCalculateFormulas);

                        ++$chartCount;

                    }

                }

            }

        }

        $chartRef1 = 0;

        $tableRef1 = 1;

        // Add worksheet relationships (drawings, ...)

        for ($i = 0; $i < $this->spreadSheet->getSheetCount(); ++$i) {

            // Add relationships

            $zipContent['xl/worksheets/_rels/sheet' . ($i + 1) . '.xml.rels'] = $this->getWriterPartRels()->writeWorksheetRelationships($this->spreadSheet->getSheet($i), ($i + 1), $this->includeCharts, $tableRef1);

            // Add unparsedLoadedData

            $sheetCodeName = $this->spreadSheet->getSheet($i)->getCodeName();

            $unparsedLoadedData = $this->spreadSheet->getUnparsedLoadedData();

            if (isset($unparsedLoadedData['sheets'][$sheetCodeName]['ctrlProps'])) {

                foreach ($unparsedLoadedData['sheets'][$sheetCodeName]['ctrlProps'] as $ctrlProp) {

                    $zipContent[$ctrlProp['filePath']] = $ctrlProp['content'];

                }

            }

            if (isset($unparsedLoadedData['sheets'][$sheetCodeName]['printerSettings'])) {

                foreach ($unparsedLoadedData['sheets'][$sheetCodeName]['printerSettings'] as $ctrlProp) {

                    $zipContent[$ctrlProp['filePath']] = $ctrlProp['content'];

                }

            }

            $drawings = $this->spreadSheet->getSheet($i)->getDrawingCollection();

            $drawingCount = count($drawings);

            if ($this->includeCharts) {

                $chartCount = $this->spreadSheet->getSheet($i)->getChartCount();

            }

            // Add drawing and image relationship parts

            if (($drawingCount > 0) || ($chartCount > 0)) {

                // Drawing relationships

                $zipContent['xl/drawings/_rels/drawing' . ($i + 1) . '.xml.rels'] = $this->getWriterPartRels()->writeDrawingRelationships($this->spreadSheet->getSheet($i), $chartRef1, $this->includeCharts);

                // Drawings

                $zipContent['xl/drawings/drawing' . ($i + 1) . '.xml'] = $this->getWriterPartDrawing()->writeDrawings($this->spreadSheet->getSheet($i), $this->includeCharts);

            } elseif (isset($unparsedLoadedData['sheets'][$sheetCodeName]['drawingAlternateContents'])) {

                // Drawings

                $zipContent['xl/drawings/drawing' . ($i + 1) . '.xml'] = $this->getWriterPartDrawing()->writeDrawings($this->spreadSheet->getSheet($i), $this->includeCharts);

            }

            // Add unparsed drawings

            if (isset($unparsedLoadedData['sheets'][$sheetCodeName]['Drawings'])) {

                foreach ($unparsedLoadedData['sheets'][$sheetCodeName]['Drawings'] as $relId => $drawingXml) {

                    $drawingFile = array_search($relId, $unparsedLoadedData['sheets'][$sheetCodeName]['drawingOriginalIds']);

                    if ($drawingFile !== false) {

                        //$drawingFile = ltrim($drawingFile, '.');

                        //$zipContent['xl' . $drawingFile] = $drawingXml;

                        $zipContent['xl/drawings/drawing' . ($i + 1) . '.xml'] = $drawingXml;

                    }

                }

            }

            // Add comment relationship parts

            $legacy = $unparsedLoadedData['sheets'][$this->spreadSheet->getSheet($i)->getCodeName()]['legacyDrawing'] ?? null;

            if (count($this->spreadSheet->getSheet($i)->getComments()) > 0 || $legacy !== null) {

                // VML Comments relationships

                $zipContent['xl/drawings/_rels/vmlDrawing' . ($i + 1) . '.vml.rels'] = $this->getWriterPartRels()->writeVMLDrawingRelationships($this->spreadSheet->getSheet($i));

                // VML Comments

                $zipContent['xl/drawings/vmlDrawing' . ($i + 1) . '.vml'] = $legacy ?? $this->getWriterPartComments()->writeVMLComments($this->spreadSheet->getSheet($i));

            }

            // Comments

            if (count($this->spreadSheet->getSheet($i)->getComments()) > 0) {

                $zipContent['xl/comments' . ($i + 1) . '.xml'] = $this->getWriterPartComments()->writeComments($this->spreadSheet->getSheet($i));

                // Media

                foreach ($this->spreadSheet->getSheet($i)->getComments() as $comment) {

                    if ($comment->hasBackgroundImage()) {

                        $image = $comment->getBackgroundImage();

                        $zipContent['xl/media/' . $image->getMediaFilename()] = $this->processDrawing($image);

                    }

                }

            }

            // Add unparsed relationship parts

            if (isset($unparsedLoadedData['sheets'][$sheetCodeName]['vmlDrawings'])) {

                foreach ($unparsedLoadedData['sheets'][$sheetCodeName]['vmlDrawings'] as $vmlDrawing) {

                    if (!isset($zipContent[$vmlDrawing['filePath']])) {

                        $zipContent[$vmlDrawing['filePath']] = $vmlDrawing['content'];

                    }

                }

            }

            // Add header/footer relationship parts

            if (count($this->spreadSheet->getSheet($i)->getHeaderFooter()->getImages()) > 0) {

                // VML Drawings

                $zipContent['xl/drawings/vmlDrawingHF' . ($i + 1) . '.vml'] = $this->getWriterPartDrawing()->writeVMLHeaderFooterImages($this->spreadSheet->getSheet($i));

                // VML Drawing relationships

                $zipContent['xl/drawings/_rels/vmlDrawingHF' . ($i + 1) . '.vml.rels'] = $this->getWriterPartRels()->writeHeaderFooterDrawingRelationships($this->spreadSheet->getSheet($i));

                // Media

                foreach ($this->spreadSheet->getSheet($i)->getHeaderFooter()->getImages() as $image) {

                    $zipContent['xl/media/' . $image->getIndexedFilename()] = file_get_contents($image->getPath());

                }

            }

            // Add Table parts

            $tables = $this->spreadSheet->getSheet($i)->getTableCollection();

            foreach ($tables as $table) {

                $zipContent['xl/tables/table' . $tableRef1 . '.xml'] = $this->getWriterPartTable()->writeTable($table, $tableRef1++);

            }

        }

        // Add media

        for ($i = 0; $i < $this->getDrawingHashTable()->count(); ++$i) {

            if ($this->getDrawingHashTable()->getByIndex($i) instanceof WorksheetDrawing) {

                $imageContents = null;

                $imagePath = $this->getDrawingHashTable()->getByIndex($i)->getPath();

                if (strpos($imagePath, 'zip://') !== false) {

                    $imagePath = substr($imagePath, 6);

                    $imagePathSplitted = explode('#', $imagePath);

                    $imageZip = new ZipArchive();

                    $imageZip->open($imagePathSplitted[0]);

                    $imageContents = $imageZip->getFromName($imagePathSplitted[1]);

                    $imageZip->close();

                    unset($imageZip);

                } else {

                    $imageContents = file_get_contents($imagePath);

                }

                $zipContent['xl/media/' . $this->getDrawingHashTable()->getByIndex($i)->getIndexedFilename()] = $imageContents;

            } elseif ($this->getDrawingHashTable()->getByIndex($i) instanceof MemoryDrawing) {

                ob_start();

                /** @var callable */

                $callable = $this->getDrawingHashTable()->getByIndex($i)->getRenderingFunction();

                call_user_func(

                    $callable,

                    $this->getDrawingHashTable()->getByIndex($i)->getImageResource()

                );

                $imageContents = ob_get_contents();

                ob_end_clean();

                $zipContent['xl/media/' . $this->getDrawingHashTable()->getByIndex($i)->getIndexedFilename()] = $imageContents;

            }

        }

        Functions::setReturnDateType($saveDateReturnType);

        Calculation::getInstance($this->spreadSheet)->getDebugLog()->setWriteDebugLog($saveDebugLog);

        $this->openFileHandle($filename);

        $this->zip = ZipStream0::newZipStream($this->fileHandle);

        $this->addZipFiles($zipContent);

        // Close file

        try {

            $this->zip->finish();

        } catch (OverflowException $e) {

            throw new WriterException('Could not close resource.');

        }

        $this->maybeCloseFileHandle();

    }

    /**

     * Get Spreadsheet object.

     *

     * @return Spreadsheet

     */

    public function getSpreadsheet()

    {

        return $this->spreadSheet;

    }

    /**

     * Set Spreadsheet object.

     *

     * @param Spreadsheet $spreadsheet PhpSpreadsheet object

     *

     * @return $this

     */

    public function setSpreadsheet(Spreadsheet $spreadsheet)

    {

        $this->spreadSheet = $spreadsheet;

        return $this;

    }

    /**

     * Get string table.

     *

     * @return string[]

     */

    public function getStringTable()

    {

        return $this->stringTable;

    }

    /**

     * Get Style HashTable.

     *

     * @return HashTable<\PhpOffice\PhpSpreadsheet\Style\Style>

     */

    public function getStyleHashTable()

    {

        return $this->styleHashTable;

    }

    /**

     * Get Conditional HashTable.

     *

     * @return HashTable<Conditional>

     */

    public function getStylesConditionalHashTable()

    {

        return $this->stylesConditionalHashTable;

    }

    /**

     * Get Fill HashTable.

     *

     * @return HashTable<Fill>

     */

    public function getFillHashTable()

    {

        return $this->fillHashTable;

    }

    /**

     * Get \PhpOffice\PhpSpreadsheet\Style\Font HashTable.

     *

     * @return HashTable<Font>

     */

    public function getFontHashTable()

    {

        return $this->fontHashTable;

    }

    /**

     * Get Borders HashTable.

     *

     * @return HashTable<Borders>

     */

    public function getBordersHashTable()

    {

        return $this->bordersHashTable;

    }

    /**

     * Get NumberFormat HashTable.

     *

     * @return HashTable<NumberFormat>

     */

    public function getNumFmtHashTable()

    {

        return $this->numFmtHashTable;

    }

    /**

     * Get \PhpOffice\PhpSpreadsheet\Worksheet\Worksheet\BaseDrawing HashTable.

     *

     * @return HashTable<BaseDrawing>

     */

    public function getDrawingHashTable()

    {

        return $this->drawingHashTable;

    }

    /**

     * Get Office2003 compatibility.

     *

     * @return bool

     */

    public function getOffice2003Compatibility()

    {

        return $this->office2003compatibility;

    }

    /**

     * Set Office2003 compatibility.

     *

     * @param bool $office2003compatibility Office2003 compatibility?

     *

     * @return $this

     */

    public function setOffice2003Compatibility($office2003compatibility)

    {

        $this->office2003compatibility = $office2003compatibility;

        return $this;

    }

    /** @var array */

    private $pathNames = [];

    private function addZipFile(string $path, string $content): void

    {

        if (!in_array($path, $this->pathNames)) {

            $this->pathNames[] = $path;

            $this->zip->addFile($path, $content);

        }

    }

    private function addZipFiles(array $zipContent): void

    {

        foreach ($zipContent as $path => $content) {

            $this->addZipFile($path, $content);

        }

    }

    /**

     * @return mixed

     */

    private function processDrawing(WorksheetDrawing $drawing)

    {

        $data = null;

        $filename = $drawing->getPath();

        $imageData = getimagesize($filename);

        if (!empty($imageData)) {

            switch ($imageData[2]) {

                case 1: // GIF, not supported by BIFF8, we convert to PNG

                    $image = imagecreatefromgif($filename);

                    if ($image !== false) {

                        ob_start();

                        imagepng($image);

                        $data = ob_get_contents();

                        ob_end_clean();

                    }

                    break;

                case 2: // JPEG

                    $data = file_get_contents($filename);

                    break;

                case 3: // PNG

                    $data = file_get_contents($filename);

                    break;

                case 6: // Windows DIB (BMP), we convert to PNG

                    $image = imagecreatefrombmp($filename);

                    if ($image !== false) {

                        ob_start();

                        imagepng($image);

                        $data = ob_get_contents();

                        ob_end_clean();

                    }

                    break;

            }

        }

        return $data;

    }

}