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<?php |
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/** |
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* @package s9e\TextFormatter |
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* @copyright Copyright (c) 2010-2023 The s9e authors |
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* @license http://www.opensource.org/licenses/mit-license.php The MIT License |
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*/ |
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namespace s9e\TextFormatter\Configurator\TemplateNormalizations; |
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use DOMAttr; |
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use DOMComment; |
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use DOMNode; |
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use DOMText; |
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use s9e\SweetDOM\Document; |
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use s9e\SweetDOM\Element; |
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abstract class AbstractNormalization |
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{ |
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/** |
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* XSL namespace |
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*/ |
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const XMLNS_XSL = 'http://www.w3.org/1999/XSL/Transform'; |
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/** |
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* @var Document Document that holds the template being normalized |
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*/ |
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protected Document $ownerDocument; |
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/** |
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* @var string[] XPath queries used to retrieve nodes of interest |
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*/ |
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protected array $queries = []; |
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/** |
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* Apply this normalization rule to given template |
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* |
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* @param Element $template <xsl:template/> node |
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*/ |
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public function normalize(Element $template): void |
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{ |
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$this->ownerDocument = $template->ownerDocument; |
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foreach ($this->getNodes() as $node) |
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{ |
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// Ignore nodes that have been removed from the document |
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if ($node->parentNode) |
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{ |
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$this->normalizeNode($node); |
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} |
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} |
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$this->reset(); |
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} |
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/** |
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* Create an xsl:text element or a text node in current template |
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* |
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* @param string $content |
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* @return DOMNode |
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*/ |
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protected function createText(string $content): DOMNode |
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{ |
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return (trim($content) === '') |
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? $this->ownerDocument->createXslText($content) |
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: $this->ownerDocument->createTextNode($content); |
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} |
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/** |
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* Create a text node in current template |
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* |
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* @param string $content |
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* @return DOMText |
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*/ |
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protected function createTextNode($content): DOMText |
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{ |
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return $this->ownerDocument->createTextNode($content); |
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} |
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/** |
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* Query and return a list of nodes of interest |
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* |
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* @return DOMNode[] |
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*/ |
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protected function getNodes(): array |
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{ |
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$query = implode(' | ', $this->queries); |
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return ($query === '') ? [] : iterator_to_array($this->ownerDocument->query($query)); |
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} |
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/** |
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* Test whether given node is an XSL element |
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* |
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* @param DOMNode $node |
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* @param string $localName |
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* @return bool |
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*/ |
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protected function isXsl(DOMNode $node, $localName = null) |
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{ |
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return ($node->namespaceURI === self::XMLNS_XSL && (!isset($localName) || $localName === $node->localName)); |
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} |
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/** |
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* Make an ASCII string lowercase |
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* |
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* @param string $str Original string |
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* @return string Lowercased string |
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*/ |
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protected function lowercase($str) |
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{ |
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return strtr($str, 'ABCDEFGHIJKLMNOPQRSTUVWXYZ', 'abcdefghijklmnopqrstuvwxyz'); |
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} |
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/** |
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* Normalize given attribute |
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* |
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* @param DOMAttr $attribute |
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* @return void |
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*/ |
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protected function normalizeAttribute(DOMAttr $attribute) |
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{ |
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} |
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/** |
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* Normalize given element |
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*/ |
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protected function normalizeElement(Element $element): void |
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{ |
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} |
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/** |
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* Normalize given node |
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* |
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* @param DOMNode $node |
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* @return void |
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*/ |
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protected function normalizeNode(DOMNode $node) |
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{ |
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if ($node instanceof Element) |
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{ |
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$this->normalizeElement($node); |
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} |
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elseif ($node instanceof DOMAttr) |
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{ |
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$this->normalizeAttribute($node); |
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} |
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elseif ($node instanceof DOMText) |
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{ |
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$this->normalizeText($node); |
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} |
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} |
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/** |
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* Normalize given text node |
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*/ |
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protected function normalizeText(DOMText $node): void |
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{ |
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} |
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/** |
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* Reset this instance's properties after usage |
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* |
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* @return void |
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*/ |
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protected function reset() |
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{ |
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unset($this->ownerDocument); |
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} |
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} |
s9e /
TextFormatter
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