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<?php |
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/** |
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* This file is part of Platform package. |
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* |
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* For the full copyright and license information, please view the LICENSE |
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* file that was distributed with this source code. |
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*/ |
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declare(strict_types=1); |
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namespace Karma\System\Gitter\Message; |
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use Karma\Platform\Ast\CodeNode; |
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use Karma\Platform\Ast\NodeInterface; |
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use Karma\Platform\Ast\NodeList; |
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use Karma\Platform\Ast\TextNode; |
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use Karma\Platform\Ast\UserNode; |
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use Karma\Platform\Io\UserInterface; |
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use Karma\Platform\Ast\Transformer\ParserInterface; |
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/** |
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* Class Parser |
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* @package Karma\System\Gitter\Message |
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*/ |
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class Parser implements ParserInterface |
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{ |
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/** |
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* @var array|UserInterface[] |
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*/ |
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private $mentions = []; |
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/** |
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* @param string $html |
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* @param array|UserInterface[] $mentions |
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* @return NodeList |
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*/ |
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public function parse(string $html, array $mentions): NodeList |
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{ |
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foreach ($mentions as $mention) { |
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$this->mentions[$mention->getName()] = $mention; |
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} |
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$html = $this->removeUnusedTags($html); |
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return new NodeList($this->transformXml($this->createRoot($html))); |
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} |
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/** |
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* @param string $html |
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* @return string |
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*/ |
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private function removeUnusedTags(string $html): string |
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{ |
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return strip_tags($html, '<code><span>'); |
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} |
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/** |
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* @param string $html |
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* @return \DOMNode |
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*/ |
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private function createRoot(string $html): \DOMNode |
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{ |
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$html = mb_convert_encoding($html, 'HTML-ENTITIES', 'UTF-8'); |
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$dom = new \DOMDocument('1.0', 'UTF-8'); |
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$dom->loadHTML('<html>' . $html . '</html>', LIBXML_HTML_NOIMPLIED | LIBXML_HTML_NODEFDTD); |
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return $dom; |
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} |
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/** |
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* @param \DOMNode $root |
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* @return \Generator |
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*/ |
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private function transformXml(\DOMNode $root): \Generator |
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{ |
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if ($root->hasChildNodes()) { |
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/** @var \DOMElement|\DOMText $child */ |
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foreach ($root->childNodes as $child) { |
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yield from $this->transformChildren($child); |
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} |
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} else { |
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yield new TextNode($root->textContent); |
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} |
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} |
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/** |
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* @param \DOMElement|\DOMText $child |
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* @return \Generator |
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*/ |
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private function transformChildren($child): \Generator |
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{ |
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if ($child instanceof \DOMText) { |
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yield new TextNode($child->textContent); |
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} else if ($child->tagName === 'span') { |
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yield $this->parseUser($child); |
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} else if ($child->tagName === 'code') { |
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yield $this->parseCode($child); |
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} else { |
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yield from $this->transformXml($child); |
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} |
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} |
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/** |
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* @param \DOMElement $user |
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* @return UserNode|TextNode|NodeInterface |
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*/ |
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private function parseUser(\DOMElement $user): NodeInterface |
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{ |
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$body = $user->textContent; |
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$name = $user->getAttribute('data-screen-name'); |
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if (!isset($this->mentions[$name])) { |
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return new TextNode($body); |
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} |
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/** @var UserInterface $mention */ |
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$mention = $this->mentions[$name]; |
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return UserNode::fromUserInterface($body, $mention); |
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} |
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/** |
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* @param \DOMElement $code |
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* @return CodeNode |
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*/ |
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private function parseCode(\DOMElement $code): CodeNode |
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{ |
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$body = htmlspecialchars($code->textContent); |
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return new CodeNode($body, $code->getAttribute('class') ?: null); |
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} |
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} |
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KarmaCore /
Gitter-System
It seems like the type of the argument is not accepted by the function/method which you are calling.
In some cases, in particular if PHP’s automatic type-juggling kicks in this might be fine. In other cases, however this might be a bug.
We suggest to add an explicit type cast like in the following example: