79 lines
2.2 KiB
PHP
79 lines
2.2 KiB
PHP
<?php
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/*
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* This file is part of the league/commonmark package.
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*
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* (c) Colin O'Dell <colinodell@gmail.com>
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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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namespace League\CommonMark\Extension\Autolink;
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use League\CommonMark\Event\DocumentParsedEvent;
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use League\CommonMark\Inline\Element\Link;
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use League\CommonMark\Inline\Element\Text;
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final class EmailAutolinkProcessor
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{
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const REGEX = '/([A-Za-z0-9.\-_+]+@[A-Za-z0-9\-_]+\.[A-Za-z0-9\-_.]+)/';
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/**
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* @param DocumentParsedEvent $e
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*
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* @return void
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*/
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public function __invoke(DocumentParsedEvent $e)
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{
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$walker = $e->getDocument()->walker();
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while ($event = $walker->next()) {
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$node = $event->getNode();
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if ($node instanceof Text && !($node->parent() instanceof Link)) {
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self::processAutolinks($node);
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}
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}
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}
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private static function processAutolinks(Text $node): void
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{
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$contents = \preg_split(self::REGEX, $node->getContent(), -1, PREG_SPLIT_DELIM_CAPTURE);
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if ($contents === false || \count($contents) === 1) {
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return;
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}
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$leftovers = '';
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foreach ($contents as $i => $content) {
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if ($i % 2 === 0) {
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$text = $leftovers . $content;
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if ($text !== '') {
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$node->insertBefore(new Text($leftovers . $content));
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}
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$leftovers = '';
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continue;
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}
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// Does the URL end with punctuation that should be stripped?
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if (\substr($content, -1) === '.') {
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// Add the punctuation later
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$content = \substr($content, 0, -1);
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$leftovers = '.';
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}
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// The last character cannot be - or _
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if (\in_array(\substr($content, -1), ['-', '_'])) {
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$node->insertBefore(new Text($content . $leftovers));
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$leftovers = '';
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continue;
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}
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$node->insertBefore(new Link('mailto:' . $content, $content));
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}
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$node->detach();
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}
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}
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