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Writer EPub3 : Added support (#2724)
* Feat: Added Epub3 writer support * Add: Tests * Fix: Code convention * Update: composer.lock file with latest requirement * Update: composer.lock file with latest requirement * Update: composer.lock file with latest requirement * Remove: composer.lock * Update: Code conventions for PHP 8.x & Update: .gitignore to include composer.lock (in support of PR #2722 : Autoload) * Add: Text & Image Element * Improvement of Epub3 elements code * Add: Unit tests for full EPub3 codebase * Fix: Code convention errors for EPub3 Unit tests * Fix: Added the suggestions * Revert: composer.json changes -> Now again included the gd & zip extension * Update: composer.json * Add: Generating Epub samples with adherence to the Epub 3 checking procedures * Fix: Null type error in php8.x runtime * Update: Changelog
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‎.gitignore‎

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/build
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phpunit.xml
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composer.phar
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composer.lock
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vendor
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/report
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/build

‎composer.json‎

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"require": {
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"php": "^7.1|^8.0",
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"ext-dom": "*",
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"ext-gd": "*",
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"ext-gd": "*",
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"ext-zip": "*",
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"ext-json": "*",
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"ext-xml": "*",
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"ext-zip": "*",
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"phpoffice/math": "^0.2"
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},
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"require-dev": {

‎docs/changes/1.x/1.4.0.md‎

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- Writer ODText: Support Default font color by [@MichaelPFrey](https://github.com/MichaelPFrey) in [#2735](https://github.com/PHPOffice/PHPWord/pull/2735)
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- Add basic ruby text (phonetic guide) support for Word2007 and HTML Reader/Writer, RTF Writer, basic support for ODT writing by [@Deadpikle](https://github.com/Deadpikle) in [#2727](https://github.com/PHPOffice/PHPWord/pull/2727)
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- Added Support for Writer Epub3 by [@Sambit003](https://github.com/Sambit003) in [#2724](https://github.com/PHPOffice/PHPWord/pull/2724)
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### Bug fixes
2022

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- Writer ODText: Support for images inside a textRun by [@Progi1984](https://github.com/Progi1984) fixing [#2240](https://github.com/PHPOffice/PHPWord/issues/2240) in [#2668](https://github.com/PHPOffice/PHPWord/pull/2668)

‎samples/Sample_Header.php‎

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}
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// Set writers
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$writers = ['Word2007' => 'docx', 'ODText' => 'odt', 'RTF' => 'rtf', 'HTML' => 'html', 'PDF' => 'pdf'];
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$writers = ['Word2007' => 'docx', 'ODText' => 'odt', 'RTF' => 'rtf', 'HTML' => 'html', 'PDF' => 'pdf', 'EPub3' => 'epub'];
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// Set PDF renderer
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if (null === Settings::getPdfRendererPath()) {

‎src/PhpWord/IOFactory.php‎

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*/
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public static function createWriter(PhpWord $phpWord, $name = 'Word2007')
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{
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if ($name !== 'WriterInterface' && !in_array($name, ['ODText', 'RTF', 'Word2007', 'HTML', 'PDF'], true)) {
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if ($name !== 'WriterInterface' && !in_array($name, ['ODText', 'RTF', 'Word2007', 'HTML', 'PDF', 'EPub3'], true)) {
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throw new Exception("\"{$name}\" is not a valid writer.");
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}
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‎src/PhpWord/Shared/ZipArchive.php‎

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return ($listIndex > -1) ? $listIndex : false;
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}
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/**
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* Add an empty directory to the zip archive (emulate \ZipArchive).
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*
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* @param string $dirname Directory name to add to the zip archive
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*/
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public function addEmptyDir(string $dirname): bool
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{
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// Create a directory entry by adding an empty file with trailing slash
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return $this->addFromString(rtrim($dirname, '/') . '/', '');
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}
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}

‎src/PhpWord/Writer/EPub3.php‎

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<?php
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/**
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* This file is part of PHPWord - A pure PHP library for reading and writing
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* word processing documents.
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*
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* PHPWord is free software distributed under the terms of the GNU Lesser
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* General Public License version 3 as published by the Free Software Foundation.
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*
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* For the full copyright and license information, please read the LICENSE
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* file that was distributed with this source code. For the full list of
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* contributors, visit https://github.com/PHPOffice/PHPWord/contributors.
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*
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* @see https://github.com/PHPOffice/PHPWord
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*
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* @license http://www.gnu.org/licenses/lgpl.txt LGPL version 3
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*/
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namespace PhpOffice\PhpWord\Writer;
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use PhpOffice\PhpWord\PhpWord;
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use PhpOffice\PhpWord\Writer\EPub3\Part\AbstractPart;
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/**
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* EPub3 writer.
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*/
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class EPub3 extends AbstractWriter implements WriterInterface
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{
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/**
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* Create new EPub3 writer.
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*/
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public function __construct(?PhpWord $phpWord = null)
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{
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// Assign PhpWord
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$this->setPhpWord($phpWord);
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// Create parts
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$this->parts = [
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'Mimetype' => 'mimetype',
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'Content' => 'content.opf',
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'Toc' => 'toc.ncx',
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'Styles' => 'styles.css',
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'Manifest' => 'META-INF/container.xml',
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'Nav' => 'nav.xhtml',
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'ContentXhtml' => 'content.xhtml',
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];
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foreach (array_keys($this->parts) as $partName) {
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$partClass = static::class . '\\Part\\' . $partName;
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if (class_exists($partClass)) {
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/** @var WriterPartInterface $part */
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$part = new $partClass($partName === 'Content' || $partName === 'ContentXhtml' ? $phpWord : null);
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$part->setParentWriter($this);
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$this->writerParts[strtolower($partName)] = $part;
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}
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}
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// Set package paths
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$this->mediaPaths = ['image' => 'Images/', 'object' => 'Objects/'];
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}
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/**
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* Save PhpWord to file.
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*/
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public function save(string $filename): void
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{
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$filename = $this->getTempFile($filename);
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$zip = $this->getZipArchive($filename);
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// Add mimetype first without compression
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$zip->addFromString('mimetype', 'application/epub+zip');
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$zip->addEmptyDir('META-INF');
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// Add other files
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foreach ($this->parts as $partName => $fileName) {
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if ($fileName === '') {
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continue;
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}
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$part = $this->getWriterPart($partName);
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if (!$part instanceof AbstractPart) {
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continue;
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}
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$zip->addFromString($fileName, $part->write());
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}
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// Close zip archive
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$zip->close();
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// Cleanup temp file
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$this->cleanupTempFile();
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}
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}

‎src/PhpWord/Writer/EPub3/Element/AbstractElement.php‎

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<?php
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/**
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* This file is part of PHPWord - A pure PHP library for reading and writing
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* word processing documents.
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*
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* PHPWord is free software distributed under the terms of the GNU Lesser
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* General Public License version 3 as published by the Free Software Foundation.
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*
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* For the full copyright and license information, please read the LICENSE
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* file that was distributed with this source code. For the full list of
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* contributors, visit https://github.com/PHPOffice/PHPWord/contributors.
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*
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* @see https://github.com/PHPOffice/PHPWord
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*
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* @license http://www.gnu.org/licenses/lgpl.txt LGPL version 3
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*/
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namespace PhpOffice\PhpWord\Writer\EPub3\Element;
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use PhpOffice\PhpWord\Writer\Word2007\Element\AbstractElement as Word2007AbstractElement;
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/**
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* Abstract element writer.
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*
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* @since 0.11.0
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*/
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abstract class AbstractElement extends Word2007AbstractElement
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{
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/**
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* Get class name of writer element based on read element.
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*
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* @param \PhpOffice\PhpWord\Element\AbstractElement $element
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*/
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public static function getElementClass($element): string
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{
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$elementClass = str_replace('PhpOffice\\PhpWord\\Element\\', '', get_class($element));
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$writerClass = 'PhpOffice\\PhpWord\\Writer\\EPub3\\Element\\' . $elementClass;
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if (!class_exists($writerClass)) {
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throw new \PhpOffice\PhpWord\Exception\Exception("Writer element class {$writerClass} not found.");
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}
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return $writerClass;
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}
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}

‎src/PhpWord/Writer/EPub3/Element/Image.php‎

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<?php
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namespace PhpOffice\PhpWord\Writer\EPub3\Element;
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use PhpOffice\PhpWord\Element\Image as ImageElement;
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/**
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* Image element writer for EPub3.
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*/
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class Image extends AbstractElement
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{
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/**
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* Write element.
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*/
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public function write(): void
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{
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$xmlWriter = $this->getXmlWriter();
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$xmlWriter->setIndent(false);
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$element = $this->getElement();
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if (!$element instanceof ImageElement) {
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return;
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}
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$mediaIndex = $element->getMediaIndex();
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$target = 'media/image' . $mediaIndex . '.' . $element->getImageExtension();
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if (!$this->withoutP) {
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$xmlWriter->startElement('p');
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}
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$xmlWriter->startElement('img');
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$xmlWriter->writeAttribute('src', $target);
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$style = '';
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if ($element->getStyle()->getWidth() !== null) {
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$style .= 'width:' . $element->getStyle()->getWidth() . 'px;';
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}
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if ($element->getStyle()->getHeight() !== null) {
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$style .= 'height:' . $element->getStyle()->getHeight() . 'px;';
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}
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if ($style !== '') {
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$xmlWriter->writeAttribute('style', $style);
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}
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$xmlWriter->endElement(); // img
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if (!$this->withoutP) {
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$xmlWriter->endElement(); // p
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}
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}
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}

‎src/PhpWord/Writer/EPub3/Element/Text.php‎

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<?php
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namespace PhpOffice\PhpWord\Writer\EPub3\Element;
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/**
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* Text element writer for EPub3.
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*/
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class Text extends AbstractElement
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{
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/**
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* Write element.
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*/
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public function write(): void
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{
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$xmlWriter = $this->getXmlWriter();
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$xmlWriter->setIndent(true);
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$xmlWriter->setIndentString(' ');
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$element = $this->getElement();
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if (!$element instanceof \PhpOffice\PhpWord\Element\Text) {
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return;
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}
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$fontStyle = $element->getFontStyle();
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$paragraphStyle = $element->getParagraphStyle();
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if (!$this->withoutP) {
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$xmlWriter->startElement('p');
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if (is_string($paragraphStyle) && $paragraphStyle !== '') {
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$xmlWriter->writeAttribute('class', $paragraphStyle);
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}
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}
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if (!empty($fontStyle)) {
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$xmlWriter->startElement('span');
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if (is_string($fontStyle)) {
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$xmlWriter->writeAttribute('class', $fontStyle);
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}
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}
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$xmlWriter->text($element->getText());
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if (!empty($fontStyle)) {
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$xmlWriter->endElement(); // span
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}
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if (!$this->withoutP) {
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$xmlWriter->endElement(); // p
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}
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}
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}

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