phorge-phorge/src/infrastructure/markup/rule/PhabricatorRemarkupRuleDiffusion.php

<?php

/*
 * Copyright 2012 Facebook, Inc.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

/**
 * @group markup
 */
final class PhabricatorRemarkupRuleDiffusion
  extends PhutilRemarkupRule {

  public function apply($text) {
    return preg_replace_callback(
      '@\br([A-Z]+[a-f0-9]+)\b@',
      array($this, 'markupDiffusionLink'),
      $text);
  }

  public function markupDiffusionLink($matches) {
    return $this->getEngine()->storeText(
      '<a href="/r'.$matches[1].'">r'.$matches[1].'</a>');
  }

}