migrate_spip-1.0.0/src/Plugin/SpipRichText/Links.php

<?php

declare(strict_types=1);

namespace Drupal\migrate_spip\Plugin\SpipRichText;

use Drupal\Core\StringTranslation\TranslatableMarkup;
use Drupal\migrate_spip\Attribute\SpipRichText;
use Drupal\migrate_spip\SpipRichTextBase;

/**
 * Manage SPIP links.
 *
 * Need to be executed before lists.
 */
#[SpipRichText(
  id: 'links',
  label: new TranslatableMarkup('Link'),
  weight: -21,
)]
final class Links extends SpipRichTextBase {

  /**
   * {@inheritdoc}
   */
  public function apply(string $text): string {
    return preg_replace(
      [
        // Link with title attribute and language (eq. [label|title{lang}->url]).
        '#\[([^|{-].*?)\|([^{-].*?)\{([^}].*?)}\n*->([^]]+)\n*]#m',
        // Link with title attribute (eq. [label|title->url]).
        '#\[([^|-]+)\|((?!->).*?)\n*->([^]]+)\n*]#m',
        // Link with language (eq. [label{lang}->url]).
        '#\[([^|{-].*?)\{([^}].*?)}\n*->([^]]+)\n*]#m',
        // Link (simple) (eq. [label->url]).
        '#\[((?!->).*?)\n*->([^]].*?)\n*]#m',
        // Link without label (eq. [->url]).
        '#\[->([^]].*?)\n*]#m',
        // Link anchor (eq. [id<-])
        '#\[((?!<-).*?)<-]#m',
      ],
      [
        '<a href="$4" title="$2" lang="$3">$1</a>',
        '<a href="$3" title="$2">$1</a>',
        '<a href="$3" lang="$2">$1</a>',
        '<a href="$2">$1</a>',
        '<a href="$1">$1</a>',
        '<a id="$1"></a>',
      ],
      $text
    );
  }

}