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92 lines
4.1 KiB
92 lines
4.1 KiB
<?php
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/**
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* @license MIT
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* Copyright 2017 Dustin Wilson, J. King, et al.
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* See LICENSE and AUTHORS files for details
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*/
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declare(strict_types=1);
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namespace MensBeam\HTML\DOM;
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use MensBeam\HTML\DOM\InnerNode\{
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Document as InnerDocument,
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Reflection
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};
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use MensBeam\HTML\Parser;
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/**
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* Not in standard. Exists so Document and Element can share some properties and
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* methods. For instance, getElementsByClassName is mentioned in the standard in
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* both the Document and Element interfaces.
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*/
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trait DocumentOrElement {
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public function getElementsByTagName(string $qualifiedName): HTMLCollection {
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// HTMLCollections cannot be created from their constructors normally.
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return Reflection::createFromProtectedConstructor(__NAMESPACE__ . '\\HTMLCollection', (!$this instanceof Document) ? $this->innerNode->ownerDocument : $this->innerNode, $this->innerNode->getElementsByTagNameNS(null, $qualifiedName));
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}
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public function getElementsByTagNameNS(?string $namespace = null, string $localName): HTMLCollection {
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// If an HTML document and the namespace is the HTML namespace change it to null
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// before running internally because HTML nodes are stored with null namespaces
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// because of bugs in PHP DOM.
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if ($namespace === Parser::HTML_NAMESPACE && (($this instanceof Document && !$this instanceof XMLDocument) || !$this->ownerDocument instanceof XMLDocument)) {
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$namespace = null;
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}
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// HTMLCollections cannot be created from their constructors normally.
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return Reflection::createFromProtectedConstructor(__NAMESPACE__ . '\\HTMLCollection', (!$this instanceof Document) ? $this->innerNode->ownerDocument : $this->innerNode, $this->innerNode->getElementsByTagNameNS($namespace, $localName));
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}
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protected function validateAndExtract(string $qualifiedName, ?string $namespace = null): array {
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# To validate and extract a namespace and qualifiedName, run these steps:
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# 1. If namespace is the empty string, set it to null.
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if ($namespace === '') {
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$namespace = null;
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}
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# 2. Validate qualifiedName.
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# To validate a qualifiedName, throw an "InvalidCharacterError" DOMException if
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# qualifiedName does not match the QName production.
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if (preg_match(InnerDocument::QNAME_PRODUCTION_REGEX, $qualifiedName) !== 1) {
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throw new DOMException(DOMException::INVALID_CHARACTER);
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}
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# 3. Let prefix be null.
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$prefix = null;
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# 4. Let localName be qualifiedName.
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$localName = $qualifiedName;
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# 5. If qualifiedName contains a ":" (U+003E), then split the string on it and
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# set prefix to the part before and localName to the part after.
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if (strpos($qualifiedName, ':') !== false) {
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$temp = explode(':', $qualifiedName, 2);
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$prefix = $temp[0];
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$prefix = ($prefix !== '') ? $prefix : null;
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$localName = $temp[1];
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}
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# 6. If prefix is non-null and namespace is null, then throw a "NamespaceError" DOMException.
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# 7. If prefix is "xml" and namespace is not the XML namespace, then throw a "NamespaceError" DOMException.
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# 8. If either qualifiedName or prefix is "xmlns" and namespace is not the XMLNS
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# namespace, then throw a "NamespaceError" DOMException.
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# 9. If namespace is the XMLNS namespace and neither qualifiedName nor prefix is
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# "xmlns", then throw a "NamespaceError" DOMException.
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if (
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($prefix !== null && $namespace === null) ||
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($prefix === 'xml' && $namespace !== Parser::XML_NAMESPACE) ||
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(($qualifiedName === 'xmlns' || $prefix === 'xmlns') && $namespace !== Parser::XMLNS_NAMESPACE) ||
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($namespace === Parser::XMLNS_NAMESPACE && $qualifiedName !== 'xmlns' && $prefix !== 'xmlns')
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) {
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throw new DOMException(DOMException::NAMESPACE_ERROR);
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}
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# 10. Return namespace, prefix, and localName.
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return [
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'namespace' => $namespace,
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'prefix' => $prefix,
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'localName' => $localName
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];
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}
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}
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