/**
* 给出一段文本，为其中的 wiki 关键词加上链接
*
* @param string $text 需要高亮的文本
* @param array $blackList 黑名单，黑名单中的词不会被高亮
* @return string
*/
public static function highlight($text, array $blackList = array())
{
$entryKeyword = new EntryKeyword();
$text = addslashes($text);
$text = preg_replace('/\\n+/', ' ', $text);
$text = trim($text);
$params = '';
if ($blackList) {
$blackList = array_unique($blackList);
array_walk($blackList, function (&$_keyword) {
$_keyword = "'{$_keyword}'";
});
$params = 'keyword NOT IN (' . implode(',', $blackList) . ')';
}
$_keywods = $entryKeyword->find($params);
$searches = array();
foreach ($_keywods as $keywod) {
//$searches[] = '/(?<=>)([^<]*)('.preg_quote($keywod->keyword, '/').')/';
$searches[] = '/(' . preg_quote($keywod->keyword, '/') . ')/';
}
// $text = preg_replace($searches, '$1<a href="/wiki/$2" target="_blank" class="wiki-highlighted-keyword">$2</a>', $text, 1);
$text = preg_replace($searches, '<a href="/wiki/$1" target="_blank" class="wiki-highlighted-keyword" title="点击查看关于「$1」的解释">$1</a>', $text, 1);
// $text = preg_replace('/ +/', '', $text);
$text = stripslashes($text);
return $text;
}
private function initialize()
{
$keywords = EntryKeyword::find();
foreach ($keywords as $keyword) {
if (!isset(self::$keywords[$keyword->keyword])) {
$keywordLength = mb_strlen($keyword->keyword, self::$encoding);
self::$keywords[$keyword->keyword] = true;
self::$maxLength = max(self::$maxLength, $keywordLength);
self::$firstCharCheck[self::mbStrGet($keyword->keyword, 0)] = true;
for ($i = 0; $i < $keywordLength; $i++) {
self::$allCharCheck[self::mbStrGet($keyword->keyword, $i)] = true;
}
}
}
}