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ContentXhtml
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1<?php
2
3namespace PhpOffice\PhpWord\Writer\EPub3\Part;
4
5use PhpOffice\PhpWord\Element\Text;
6use PhpOffice\PhpWord\Element\TextRun;
7use PhpOffice\PhpWord\PhpWord;
8use XMLWriter;
9
10/**
11 * Class for EPub3 content.xhtml part.
12 */
13class ContentXhtml extends AbstractPart
14{
15    /**
16     * PHPWord object.
17     *
18     * @var ?PhpWord
19     */
20    private $phpWord;
21
22    /**
23     * Constructor.
24     */
25    public function __construct(?PhpWord $phpWord = null)
26    {
27        $this->phpWord = $phpWord;
28    }
29
30    /**
31     * Get XML Writer.
32     *
33     * @return XMLWriter
34     */
35    protected function getXmlWriter()
36    {
37        $xmlWriter = new XMLWriter();
38        $xmlWriter->openMemory();
39
40        return $xmlWriter;
41    }
42
43    /**
44     * Write part content.
45     */
46    public function write(): string
47    {
48        if ($this->phpWord === null) {
49            throw new \PhpOffice\PhpWord\Exception\Exception('No PhpWord assigned.');
50        }
51
52        $xmlWriter = $this->getXmlWriter();
53
54        $xmlWriter->startDocument('1.0', 'UTF-8');
55        $xmlWriter->startElement('html');
56        $xmlWriter->writeAttribute('xmlns', 'http://www.w3.org/1999/xhtml');
57        $xmlWriter->writeAttribute('xmlns:epub', 'http://www.idpf.org/2007/ops');
58        $xmlWriter->startElement('head');
59        $xmlWriter->writeElement('title', $this->phpWord->getDocInfo()->getTitle() ?: 'Untitled');
60        $xmlWriter->endElement(); // head
61        $xmlWriter->startElement('body');
62
63        // Write sections content
64        foreach ($this->phpWord->getSections() as $section) {
65            $xmlWriter->startElement('div');
66            $xmlWriter->writeAttribute('class', 'section');
67
68            foreach ($section->getElements() as $element) {
69                if ($element instanceof TextRun) {
70                    $xmlWriter->startElement('p');
71                    $this->writeTextRun($element, $xmlWriter);
72                    $xmlWriter->endElement(); // p
73                } elseif (method_exists($element, 'getText')) {
74                    $text = $element->getText();
75                    $xmlWriter->startElement('p');
76                    if ($text instanceof TextRun) {
77                        $this->writeTextRun($text, $xmlWriter);
78                    } elseif ($text !== null) {
79                        $xmlWriter->text((string) $text);
80                    }
81                    $xmlWriter->endElement(); // p
82                }
83            }
84
85            $xmlWriter->endElement(); // div
86        }
87
88        $xmlWriter->endElement(); // body
89        $xmlWriter->endElement(); // html
90
91        return $xmlWriter->outputMemory(true);
92    }
93
94    protected function writeTextElement(\PhpOffice\PhpWord\Element\AbstractElement $textElement, XMLWriter $xmlWriter): void
95    {
96        if ($textElement instanceof Text) {
97            $text = $textElement->getText();
98            if ($text !== null) {
99                $xmlWriter->text((string) $text);
100            }
101        } elseif (is_object($textElement) && method_exists($textElement, 'getText')) {
102            $text = $textElement->getText();
103            if ($text instanceof TextRun) {
104                $this->writeTextRun($text, $xmlWriter);
105            } elseif ($text !== null) {
106                $xmlWriter->text((string) $text);
107            }
108        }
109    }
110
111    protected function writeTextRun(TextRun $textRun, XMLWriter $xmlWriter): void
112    {
113        foreach ($textRun->getElements() as $element) {
114            $this->writeTextElement($element, $xmlWriter);
115        }
116    }
117}