小幅修正

Plugin.php

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+<?php
+if (!defined('__TYPECHO_ROOT_DIR__')) exit;
+/**
+ * 自动为文章中出现的关键词添加链接
+ * @package Keywords
+ * @author 羽中
+ * @version 1.1.1
+ * @dependence 13.12.12-*
+ * @link http://www.jzwalk.com/archives/net/keywords-for-typecho
+ */
+class Keywords_Plugin implements Typecho_Plugin_Interface
+{
+    /**
+     * 激活插件方法,如果激活失败,直接抛出异常
+     *
+     * @access public
+     * @return void
+     * @throws Typecho_Plugin_Exception
+     */
+    public static function activate(){
+        Typecho_Plugin::factory('Widget_Abstract_Contents')->contentEx = 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('以“关键词”|(英文半角分隔号)“链接”形式填写，每行一组。如：<br/>google|http://www.google.com'));
+		$keywords->input->setAttribute('style', 'width:345px;height:150px;');
+        $form->addInput($keywords);
+        $tagslink = new Typecho_Widget_Helper_Form_Element_Checkbox('tagslink',array('true'=>'自动替换'),NULL,_t('标签链接'),_t('文中若出现与本站标签相同的关键词则自动添加标签页链接'));
+        $form->addInput($tagslink);
+        $limits = new Typecho_Widget_Helper_Form_Element_Text('limits',NULL,"1",_t('链接频率'),_t('文中有多个重复关键词或标签时可限制链接替换次数'));
+        $limits->input->setAttribute('style', 'width:60px');
+        $form->addInput($limits->addRule('isInteger', _t('请填写整数数字')));
+    }
+
+    /**
+     * 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 $form){}   
+
+    public static function kwparse($content,$widget,$lastResult) {
+    	$content = empty($lastResult)?$content:$lastResult;
+    	$settings = Helper::options()->plugin('Keywords');
+    	$limit = $settings->limits;
+    	$db = Typecho_Db::get();
+    	$tagselect = $db->select()->from('table.metas')->where('type = ?', 'tag');
+    	$tagdata = $db->fetchAll($tagselect,array($widget->widget('Widget_Abstract_Metas'),'filter'));
+    	$wlsets = explode("\n", $settings->keywords);
+		if (!empty($settings->keywords)&&true==strchr($settings->keywords, '|')) {
+    		foreach ($wlsets as $wlset) {
+				$wlarray = explode("|", $wlset);
+    			$content = preg_replace('/(?!<[^>]*)('.$wlarray[0].')(?![^<]*>)/i','<a href="'.$wlarray[1].'" target="_blank" title="'.$wlarray[0].'">'.$wlarray[0].'</a>',$content,$limit);
+			}
+    	}
+    	if ($tagdata&&$settings->tagslink) {
+    		foreach ($tagdata as $tag) {
+    			$content = preg_replace('/(?!<[^>]*)('.$tag['name'].')(?![^<]*>)/i','<a href="'.$tag['permalink'].'" target="_blank" title="'.$tag['name'].'">'.$tag['name'].'</a>',$content,$limit);
+    		}
+    	}
+        return $content;
+    }
+}

README.md

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+### Keywords 1.1.1 for Typecho 0.9
+
+详细使用说明和效果演示见blog发布地址: 
+####http://www.jzwalk.com/archives/net/keywords-for-typecho