Proyectos de Subversion Moodle

<?php

namespace PhpOffice\PhpSpreadsheet\Writer\Xlsx;

use PhpOffice\PhpSpreadsheet\Reader\Xlsx\Namespaces;

use PhpOffice\PhpSpreadsheet\Shared\File;

use PhpOffice\PhpSpreadsheet\Shared\XMLWriter;

use PhpOffice\PhpSpreadsheet\Spreadsheet;

use PhpOffice\PhpSpreadsheet\Worksheet\MemoryDrawing;

use PhpOffice\PhpSpreadsheet\Writer\Exception as WriterException;

class ContentTypes extends WriterPart

{

    /**

     * Write content types to XML format.

     *

     * @param bool $includeCharts Flag indicating if we should include drawing details for charts

     *

     * @return string XML Output

     */

    public function writeContentTypes(Spreadsheet $spreadsheet, $includeCharts = false)

    {

        // Create XML writer

        $objWriter = null;

        if ($this->getParentWriter()->getUseDiskCaching()) {

            $objWriter = new XMLWriter(XMLWriter::STORAGE_DISK, $this->getParentWriter()->getDiskCachingDirectory());

        } else {

            $objWriter = new XMLWriter(XMLWriter::STORAGE_MEMORY);

        }

        // XML header

        $objWriter->startDocument('1.0', 'UTF-8', 'yes');

        // Types

        $objWriter->startElement('Types');

        $objWriter->writeAttribute('xmlns', Namespaces::CONTENT_TYPES);

        // Theme

        $this->writeOverrideContentType($objWriter, '/xl/theme/theme1.xml', 'application/vnd.openxmlformats-officedocument.theme+xml');

        // Styles

        $this->writeOverrideContentType($objWriter, '/xl/styles.xml', 'application/vnd.openxmlformats-officedocument.spreadsheetml.styles+xml');

        // Rels

        $this->writeDefaultContentType($objWriter, 'rels', 'application/vnd.openxmlformats-package.relationships+xml');

        // XML

        $this->writeDefaultContentType($objWriter, 'xml', 'application/xml');

        // VML

        $this->writeDefaultContentType($objWriter, 'vml', 'application/vnd.openxmlformats-officedocument.vmlDrawing');

        // Workbook

        if ($spreadsheet->hasMacros()) { //Macros in workbook ?

            // Yes : not standard content but "macroEnabled"

            $this->writeOverrideContentType($objWriter, '/xl/workbook.xml', 'application/vnd.ms-excel.sheet.macroEnabled.main+xml');

            //... and define a new type for the VBA project

            // Better use Override, because we can use 'bin' also for xl\printerSettings\printerSettings1.bin

            $this->writeOverrideContentType($objWriter, '/xl/vbaProject.bin', 'application/vnd.ms-office.vbaProject');

            if ($spreadsheet->hasMacrosCertificate()) {

                // signed macros ?

                // Yes : add needed information

                $this->writeOverrideContentType($objWriter, '/xl/vbaProjectSignature.bin', 'application/vnd.ms-office.vbaProjectSignature');

            }

        } else {

            // no macros in workbook, so standard type

            $this->writeOverrideContentType($objWriter, '/xl/workbook.xml', 'application/vnd.openxmlformats-officedocument.spreadsheetml.sheet.main+xml');

        }

        // DocProps

        $this->writeOverrideContentType($objWriter, '/docProps/app.xml', 'application/vnd.openxmlformats-officedocument.extended-properties+xml');

        $this->writeOverrideContentType($objWriter, '/docProps/core.xml', 'application/vnd.openxmlformats-package.core-properties+xml');

        $customPropertyList = $spreadsheet->getProperties()->getCustomProperties();

        if (!empty($customPropertyList)) {

            $this->writeOverrideContentType($objWriter, '/docProps/custom.xml', 'application/vnd.openxmlformats-officedocument.custom-properties+xml');

        }

        // Worksheets

        $sheetCount = $spreadsheet->getSheetCount();

        for ($i = 0; $i < $sheetCount; ++$i) {

            $this->writeOverrideContentType($objWriter, '/xl/worksheets/sheet' . ($i + 1) . '.xml', 'application/vnd.openxmlformats-officedocument.spreadsheetml.worksheet+xml');

        }

        // Shared strings

        $this->writeOverrideContentType($objWriter, '/xl/sharedStrings.xml', 'application/vnd.openxmlformats-officedocument.spreadsheetml.sharedStrings+xml');

        // Table

        $table = 1;

        for ($i = 0; $i < $sheetCount; ++$i) {

            $tableCount = $spreadsheet->getSheet($i)->getTableCollection()->count();

            for ($t = 1; $t <= $tableCount; ++$t) {

                $this->writeOverrideContentType($objWriter, '/xl/tables/table' . $table++ . '.xml', 'application/vnd.openxmlformats-officedocument.spreadsheetml.table+xml');

            }

        }

        // Add worksheet relationship content types

        $unparsedLoadedData = $spreadsheet->getUnparsedLoadedData();

        $chart = 1;

        for ($i = 0; $i < $sheetCount; ++$i) {

            $drawings = $spreadsheet->getSheet($i)->getDrawingCollection();

            $drawingCount = count($drawings);

            $chartCount = ($includeCharts) ? $spreadsheet->getSheet($i)->getChartCount() : 0;

            $hasUnparsedDrawing = isset($unparsedLoadedData['sheets'][$spreadsheet->getSheet($i)->getCodeName()]['drawingOriginalIds']);

            //    We need a drawing relationship for the worksheet if we have either drawings or charts

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

                $this->writeOverrideContentType($objWriter, '/xl/drawings/drawing' . ($i + 1) . '.xml', 'application/vnd.openxmlformats-officedocument.drawing+xml');

            }

            //    If we have charts, then we need a chart relationship for every individual chart

            if ($chartCount > 0) {

                for ($c = 0; $c < $chartCount; ++$c) {

                    $this->writeOverrideContentType($objWriter, '/xl/charts/chart' . $chart++ . '.xml', 'application/vnd.openxmlformats-officedocument.drawingml.chart+xml');

                }

            }

        }

        // Comments

        for ($i = 0; $i < $sheetCount; ++$i) {

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

                $this->writeOverrideContentType($objWriter, '/xl/comments' . ($i + 1) . '.xml', 'application/vnd.openxmlformats-officedocument.spreadsheetml.comments+xml');

            }

        }

        // Add media content-types

        $aMediaContentTypes = [];

        $mediaCount = $this->getParentWriter()->getDrawingHashTable()->count();

        for ($i = 0; $i < $mediaCount; ++$i) {

            $extension = '';

            $mimeType = '';

            if ($this->getParentWriter()->getDrawingHashTable()->getByIndex($i) instanceof \PhpOffice\PhpSpreadsheet\Worksheet\Drawing) {

                $extension = strtolower($this->getParentWriter()->getDrawingHashTable()->getByIndex($i)->getExtension());

                $mimeType = $this->getImageMimeType($this->getParentWriter()->getDrawingHashTable()->getByIndex($i)->getPath());

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

                $extension = strtolower($this->getParentWriter()->getDrawingHashTable()->getByIndex($i)->getMimeType());

                $extension = explode('/', $extension);

                $extension = $extension[1];

                $mimeType = $this->getParentWriter()->getDrawingHashTable()->getByIndex($i)->getMimeType();

            }

            if (!isset($aMediaContentTypes[$extension])) {

                $aMediaContentTypes[$extension] = $mimeType;

                $this->writeDefaultContentType($objWriter, $extension, $mimeType);

            }

        }

        if ($spreadsheet->hasRibbonBinObjects()) {

            // Some additional objects in the ribbon ?

            // we need to write "Extension" but not already write for media content

            $tabRibbonTypes = array_diff($spreadsheet->getRibbonBinObjects('types') ?? [], array_keys($aMediaContentTypes));

            foreach ($tabRibbonTypes as $aRibbonType) {

                $mimeType = 'image/.' . $aRibbonType; //we wrote $mimeType like customUI Editor

                $this->writeDefaultContentType($objWriter, $aRibbonType, $mimeType);

            }

        }

        $sheetCount = $spreadsheet->getSheetCount();

        for ($i = 0; $i < $sheetCount; ++$i) {

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

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

                    if (!isset($aMediaContentTypes[strtolower($image->getExtension())])) {

                        $aMediaContentTypes[strtolower($image->getExtension())] = $this->getImageMimeType($image->getPath());

                        $this->writeDefaultContentType($objWriter, strtolower($image->getExtension()), $aMediaContentTypes[strtolower($image->getExtension())]);

                    }

                }

            }

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

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

                    if (!$comment->hasBackgroundImage()) {

                        continue;

                    }

                    $bgImage = $comment->getBackgroundImage();

                    $bgImageExtentionKey = strtolower($bgImage->getImageFileExtensionForSave(false));

                    if (!isset($aMediaContentTypes[$bgImageExtentionKey])) {

                        $aMediaContentTypes[$bgImageExtentionKey] = $bgImage->getImageMimeType();

                        $this->writeDefaultContentType($objWriter, $bgImageExtentionKey, $aMediaContentTypes[$bgImageExtentionKey]);

                    }

                }

            }

        }

        // unparsed defaults

        if (isset($unparsedLoadedData['default_content_types'])) {

            foreach ($unparsedLoadedData['default_content_types'] as $extName => $contentType) {

                $this->writeDefaultContentType($objWriter, $extName, $contentType);

            }

        }

        // unparsed overrides

        if (isset($unparsedLoadedData['override_content_types'])) {

            foreach ($unparsedLoadedData['override_content_types'] as $partName => $overrideType) {

                $this->writeOverrideContentType($objWriter, $partName, $overrideType);

            }

        }

        $objWriter->endElement();

        // Return

        return $objWriter->getData();

    }

    /**

     * Get image mime type.

     *

     * @param string $filename Filename

     *

     * @return string Mime Type

     */

    private function getImageMimeType($filename)

    {

        if (File::fileExists($filename)) {

            $image = getimagesize($filename);

            return image_type_to_mime_type((is_array($image) && count($image) >= 3) ? $image[2] : 0);

        }

        throw new WriterException("File $filename does not exist");

    }

    /**

     * Write Default content type.

     *

     * @param string $partName Part name

     * @param string $contentType Content type

     */

    private function writeDefaultContentType(XMLWriter $objWriter, $partName, $contentType): void

    {

        if ($partName != '' && $contentType != '') {

            // Write content type

            $objWriter->startElement('Default');

            $objWriter->writeAttribute('Extension', $partName);

            $objWriter->writeAttribute('ContentType', $contentType);

            $objWriter->endElement();

        } else {

            throw new WriterException('Invalid parameters passed.');

        }

    }

    /**

     * Write Override content type.

     *

     * @param string $partName Part name

     * @param string $contentType Content type

     */

    private function writeOverrideContentType(XMLWriter $objWriter, $partName, $contentType): void

    {

        if ($partName != '' && $contentType != '') {

            // Write content type

            $objWriter->startElement('Override');

            $objWriter->writeAttribute('PartName', $partName);

            $objWriter->writeAttribute('ContentType', $contentType);

            $objWriter->endElement();

        } else {

            throw new WriterException('Invalid parameters passed.');

        }

    }

}