1

2024-07-17 09:23:45 +08:00
parent edf9deeb1a
commit 881ac3e056
1001 changed files with 41032 additions and 5452 deletions
--- a/vendor/phpoffice/math/src/Math/Reader/MathML.php
+++ b/vendor/phpoffice/math/src/Math/Reader/MathML.php
@@ -0,0 +1,136 @@
+<?php
+
+namespace PhpOffice\Math\Reader;
+
+use DOMDocument;
+use DOMElement;
+use DOMNode;
+use DOMXPath;
+use PhpOffice\Math\Element;
+use PhpOffice\Math\Exception\InvalidInputException;
+use PhpOffice\Math\Exception\NotImplementedException;
+use PhpOffice\Math\Math;
+
+class MathML implements ReaderInterface
+{
+    /** @var Math */
+    private $math;
+
+    /** @var DOMDocument */
+    private $dom;
+
+    /** @var DOMXpath */
+    private $xpath;
+
+    public function read(string $content): ?Math
+    {
+        $content = str_replace(
+            [
+                '&InvisibleTimes;',
+            ],
+            [
+                '<mchar name="InvisibleTimes"/>',
+            ],
+            $content
+        );
+
+        $this->dom = new DOMDocument();
+        $this->dom->loadXML($content, LIBXML_DTDLOAD);
+
+        $this->math = new Math();
+        $this->parseNode(null, $this->math);
+
+        return $this->math;
+    }
+
+    /**
+     * @param Math|Element\AbstractGroupElement $parent
+     */
+    protected function parseNode(?DOMNode $nodeRowElement, $parent): void
+    {
+        $this->xpath = new DOMXpath($this->dom);
+        foreach ($this->xpath->query('*', $nodeRowElement) ?: [] as $nodeElement) {
+            if ($parent instanceof Element\Semantics
+                && $nodeElement instanceof DOMElement
+                && $nodeElement->nodeName == 'annotation') {
+                $parent->addAnnotation(
+                    $nodeElement->getAttribute('encoding'),
+                    trim($nodeElement->nodeValue)
+                );
+
+                continue;
+            }
+
+            $element = $this->getElement($nodeElement);
+            $parent->add($element);
+
+            if ($element instanceof Element\AbstractGroupElement) {
+                $this->parseNode($nodeElement, $element);
+            }
+        }
+    }
+
+    protected function getElement(DOMNode $nodeElement): Element\AbstractElement
+    {
+        $nodeValue = trim($nodeElement->nodeValue);
+        switch ($nodeElement->nodeName) {
+            case 'mfrac':
+                $nodeList = $this->xpath->query('*', $nodeElement);
+                if ($nodeList && $nodeList->length == 2) {
+                    return new Element\Fraction(
+                        $this->getElement($nodeList->item(0)),
+                        $this->getElement($nodeList->item(1))
+                    );
+                }
+
+                throw new InvalidInputException(sprintf(
+                    '%s : The tag `%s` has not two subelements',
+                    __METHOD__,
+                    $nodeElement->nodeName
+                ));
+            case 'mi':
+                return new Element\Identifier($nodeValue);
+            case 'mn':
+                return new Element\Numeric(floatval($nodeValue));
+            case 'mo':
+                if (empty($nodeValue)) {
+                    $nodeList = $this->xpath->query('*', $nodeElement);
+                    if (
+                        $nodeList
+                        && $nodeList->length == 1
+                        && $nodeList->item(0)->nodeName == 'mchar'
+                        && $nodeList->item(0) instanceof DOMElement
+                        && $nodeList->item(0)->hasAttribute('name')
+                    ) {
+                        $nodeValue = $nodeList->item(0)->getAttribute('name');
+                    }
+                }
+
+                return new Element\Operator($nodeValue);
+            case 'mrow':
+                return new Element\Row();
+            case 'msup':
+                $nodeList = $this->xpath->query('*', $nodeElement);
+                if ($nodeList && $nodeList->length == 2) {
+                    return new Element\Superscript(
+                        $this->getElement($nodeList->item(0)),
+                        $this->getElement($nodeList->item(1))
+                    );
+                }
+
+                throw new InvalidInputException(sprintf(
+                    '%s : The tag `%s` has not two subelements',
+                    __METHOD__,
+                    $nodeElement->nodeName
+                ));
+            case 'semantics':
+                return new Element\Semantics();
+            default:
+                throw new NotImplementedException(sprintf(
+                    '%s : The tag `%s` is not implemented',
+                    __METHOD__,
+                    $nodeElement->nodeName
+                ));
+        }
+    }
+}