Файл: vendor/league/commonmark/src/Extension/Footnote/Event/NumberFootnotesListener.php
Строк: 121
<?php
/*
* This file is part of the league/commonmark package.
*
* (c) Colin O'Dell <colinodell@gmail.com>
* (c) Rezo Zero / Ambroise Maupate
*
* For the full copyright and license information, please view the LICENSE
* file that was distributed with this source code.
*/
declare(strict_types=1);
namespace LeagueCommonMarkExtensionFootnoteEvent;
use LeagueCommonMarkEventDocumentParsedEvent;
use LeagueCommonMarkExtensionFootnoteNodeFootnoteRef;
use LeagueCommonMarkReferenceReference;
final class NumberFootnotesListener
{
public function onDocumentParsed(DocumentParsedEvent $event): void
{
$document = $event->getDocument();
$nextCounter = 1;
$usedLabels = [];
$usedCounters = [];
foreach ($document->iterator() as $node) {
if (! $node instanceof FootnoteRef) {
continue;
}
$existingReference = $node->getReference();
$label = $existingReference->getLabel();
$counter = $nextCounter;
$canIncrementCounter = true;
if (array_key_exists($label, $usedLabels)) {
/*
* Reference is used again, we need to point
* to the same footnote. But with a different ID
*/
$counter = $usedCounters[$label];
$label .= '__' . ++$usedLabels[$label];
$canIncrementCounter = false;
}
// rewrite reference title to use a numeric link
$newReference = new Reference(
$label,
$existingReference->getDestination(),
(string) $counter
);
// Override reference with numeric link
$node->setReference($newReference);
$document->getReferenceMap()->add($newReference);
/*
* Store created references in document for
* creating FootnoteBackrefs
*/
$document->data->append($existingReference->getDestination(), $newReference);
$usedLabels[$label] = 1;
$usedCounters[$label] = $nextCounter;
if ($canIncrementCounter) {
$nextCounter++;
}
}
}
}