contentEx = array('Keywords_Plugin','kwparse');
Typecho_Plugin::factory('Widget_Abstract_Contents')->excerptEx = array('Keywords_Plugin','kwparse');
}
/**
* 禁用插件方法,如果禁用失败,直接抛出异常
*
* @static
* @access public
* @return void
* @throws Typecho_Plugin_Exception
*/
public static function deactivate(){}
/**
* 获取插件配置面板
*
* @access public
* @param Typecho_Widget_Helper_Form $form 配置面板
* @return void
*/
public static function config(Typecho_Widget_Helper_Form $form)
{
$keywords = new Typecho_Widget_Helper_Form_Element_Textarea('keywords',NULL,'',_t('关键词链接'),_t('每行1组以"关键词|(半角竖线)链接"形式填写, 可用第2个竖线追加参数:
n代表nofollow标记, e代表external nofollow标记, b代表本窗口打开. 例:
google|http://www.google.com|n 即此链接带nofollow(默认新窗口打开)'));
$keywords->input->setAttribute('style','max-width:400px;height:150px;');
$form->addInput($keywords);
$autolink = new Typecho_Widget_Helper_Form_Element_Checkbox('autolink',array('catslink'=>_t('分类名称'),'tagslink'=>_t('标签名称')),[],_t('自动内链'),_t('将与分类/标签名相同的词替换为分类/标签页链接'));
$form->addInput($autolink);
$nofollow = new Typecho_Widget_Helper_Form_Element_Checkbox('nofollow',
array(1=>_t('nofollow标记')),[],_t('内链设置'));
$form->addInput($nofollow);
$blank = new Typecho_Widget_Helper_Form_Element_Select('blank',
array(0=>_t('本窗口打开'),1=>_t('新窗口打开')),0,'');
$blank->input->setAttribute('style','position:absolute;bottom:11px;left:115px;');
$blank->setAttribute('style','position:relative;');
$form->addInput($blank);
$limits = new Typecho_Widget_Helper_Form_Element_Text('limits',NULL,'1',_t('链接频次'),_t('文中有多个重复关键词时可指定替换为链接的次数'));
$limits->input->setAttribute('style','width:40px;');
$limits->addRule('required',_t('链接次数不能为空'));
$form->addInput($limits->addRule('isInteger',_t('请填写整数数字')));
$pagelinks = new Typecho_Widget_Helper_Form_Element_Radio('pagelinks',array(1=>_t('是'),0=>_t('否')),1,_t('页面使用'),_t('除文章外是否将替换链接效果作用于独立页面内容'));
$form->addInput($pagelinks);
}
/**
* 个人用户的配置面板
*
* @access public
* @param Typecho_Widget_Helper_Form $form
* @return void
*/
public static function personalConfig(Typecho_Widget_Helper_Form $form){}
/**
* 执行数据替换
*
* @access public
* @param string $content
* @return string
*/
public static function kwparse($content,$widget,$lastResult)
{
$content = empty($lastResult) ? $content : $lastResult;
$keywords = self::keywords();
if ($widget instanceof Widget_Archive && $keywords) {
$settings = Helper::options()->plugin('Keywords');
//关闭页面内容替换
if ($widget->is('page') && !$settings->pagelinks) {
return $content;
}
foreach ($keywords as $i=>$row) {
$txt = trim($row['0']);
if ($txt) {
$link = trim($row['1']);
$set = '';
if(isset($row['2'])){$set = trim($row['2']);}
$rel = '';
$open = '_blank';
//处理标记与打开方式
if ($set) {
if (false!==stripos($set,'e')) {
$rel = ' rel="external nofollow"';
} elseif (false!==stripos($set,'n')) {
$rel = ' rel="nofollow"';
}
$open = false!==stripos($set,'b') ? '_self' : $open;
}
$content = false!==strpos($content,$txt)
//正则排除参数和链接
? preg_replace('/(?!<[^>]*)'.$txt.'(?![^<]*(>|<\/[a|sc]))/s'
,''.$txt.'',$content,$settings->limits) : $content;
}
}
}
return $content;
}
/**
* 输出关键词数据
*
* @access private
* @return array
*/
private static function keywords()
{
$settings = Helper::options()->plugin('Keywords');
$autolink = $settings->autolink;
$kwarray = array();
$keyword = trim(Typecho_Common::stripTags($settings->keywords));
if (strpos($keyword,'|')) {
//解析关键词数组
$kwsets = array_filter(preg_split("/(\r|\n|\r\n)/",$keyword));
foreach ($kwsets as $kwset) {
$kwarray[] = explode('|',$kwset);
}
}
if ($autolink) {
$db = Typecho_Db::get();
$nofollow = $settings->nofollow ? 'n' : '';
$blank = $settings->blank ? '' : 'b';
if (in_array('catslink',$autolink)) {
$catselect = $db->select()->from('table.metas')->where('type = ?','category');
$catdata = $db->fetchAll($catselect,array(Typecho_Widget::widget('Widget_Abstract_Metas'),'filter'));
//并入分类链接
$cats = array();
foreach ($catdata as $cat) {
$cats[] = array($cat['name'],$cat['permalink'],$nofollow.$blank);
}
$kwarray = array_merge($kwarray,$cats);
}
if (in_array('tagslink',$autolink)) {
$tagselect = $db->select()->from('table.metas')->where('type = ?','tag');
$tagdata = $db->fetchAll($tagselect,array(Typecho_Widget::widget('Widget_Abstract_Metas'),'filter'));
//并入标签链接
if ($tagdata) {
$tags = array();
foreach ($tagdata as $tag) {
$tags[] = array($tag['name'],$tag['permalink'],$nofollow.$blank);
}
$kwarray = array_merge($kwarray,$tags);
}
}
}
if ($kwarray) {
//优先处理长词
usort($kwarray,array(new Keywords_Plugin,'lsort'));
}
return $kwarray;
}
/**
* 按字符长短排序
*
* @access private
* @return integer
*/
private static function lsort($a,$b) {
return strlen($a['0'])