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117 lines
5.5 KiB
PHTML
117 lines
5.5 KiB
PHTML
5 years ago
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<?php
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// +----------------------------------------------------------------------
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// | ThinkPHP [ WE CAN DO IT JUST THINK IT ]
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// +----------------------------------------------------------------------
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// | Copyright (c) 2006-2014 http://thinkphp.cn All rights reserved.
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// +----------------------------------------------------------------------
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// | Licensed ( http://www.apache.org/licenses/LICENSE-2.0 )
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// +----------------------------------------------------------------------
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// | Author: liu21st <liu21st@gmail.com>
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// +----------------------------------------------------------------------
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namespace Behavior;
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use Think\Storage;
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/**
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* 系统行为扩展：静态缓存读取
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*/
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class ReadHtmlCacheBehavior {
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// 行为扩展的执行入口必须是run
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public function run(&$params){
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// 开启静态缓存
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if(IS_GET && C('HTML_CACHE_ON')) {
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$cacheTime = $this->requireHtmlCache();
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if( false !== $cacheTime && $this->checkHTMLCache(HTML_FILE_NAME,$cacheTime)) { //静态页面有效
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// 读取静态页面输出
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echo Storage::read(HTML_FILE_NAME,'html');
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exit();
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}
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}
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}
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// 判断是否需要静态缓存
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static private function requireHtmlCache() {
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// 分析当前的静态规则
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$htmls = C('HTML_CACHE_RULES'); // 读取静态规则
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if(!empty($htmls)) {
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$htmls = array_change_key_case($htmls);
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// 静态规则文件定义格式 actionName=>array('静态规则','缓存时间','附加规则')
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// 'read'=>array('{id},{name}',60,'md5') 必须保证静态规则的唯一性 和 可判断性
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// 检测静态规则
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$controllerName = strtolower(CONTROLLER_NAME);
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$actionName = strtolower(ACTION_NAME);
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if(isset($htmls[$controllerName.':'.$actionName])) {
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$html = $htmls[$controllerName.':'.$actionName]; // 某个控制器的操作的静态规则
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}elseif(isset($htmls[$controllerName.':'])){// 某个控制器的静态规则
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$html = $htmls[$controllerName.':'];
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}elseif(isset($htmls[$actionName])){
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$html = $htmls[$actionName]; // 所有操作的静态规则
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}elseif(isset($htmls['*'])){
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$html = $htmls['*']; // 全局静态规则
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}
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if(!empty($html)) {
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// 解读静态规则
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$rule = is_array($html)?$html[0]:$html;
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// 以$_开头的系统变量
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$callback = function($match){
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switch($match[1]){
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case '_GET': $var = $_GET[$match[2]]; break;
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case '_POST': $var = $_POST[$match[2]]; break;
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case '_REQUEST': $var = $_REQUEST[$match[2]]; break;
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case '_SERVER': $var = $_SERVER[$match[2]]; break;
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case '_SESSION': $var = $_SESSION[$match[2]]; break;
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case '_COOKIE': $var = $_COOKIE[$match[2]]; break;
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}
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return (count($match) == 4) ? $match[3]($var) : $var;
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};
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$rule = preg_replace_callback('/{\$(_\w+)\.(\w+)(?:\|(\w+))?}/', $callback, $rule);
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// {ID|FUN} GET变量的简写
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$rule = preg_replace_callback('/{(\w+)\|(\w+)}/', function($match){return $match[2]($_GET[$match[1]]);}, $rule);
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$rule = preg_replace_callback('/{(\w+)}/', function($match){return $_GET[$match[1]];}, $rule);
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// 特殊系统变量
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$rule = str_ireplace(
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array('{:controller}','{:action}','{:module}'),
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array(CONTROLLER_NAME,ACTION_NAME,MODULE_NAME),
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$rule);
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// {|FUN} 单独使用函数
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$rule = preg_replace_callback('/{|(\w+)}/', function($match){return $match[1]();},$rule);
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$cacheTime = C('HTML_CACHE_TIME',null,60);
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if(is_array($html)){
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if(!empty($html[2])) $rule = $html[2]($rule); // 应用附加函数
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$cacheTime = isset($html[1])?$html[1]:$cacheTime; // 缓存有效期
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}else{
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$cacheTime = $cacheTime;
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}
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// 当前缓存文件
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define('HTML_FILE_NAME',HTML_PATH . $rule.C('HTML_FILE_SUFFIX',null,'.html'));
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return $cacheTime;
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}
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}
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// 无需缓存
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return false;
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}
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/**
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* 检查静态HTML文件是否有效
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* 如果无效需要重新更新
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* @access public
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* @param string $cacheFile 静态文件名
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* @param integer $cacheTime 缓存有效期
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* @return boolean
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*/
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static public function checkHTMLCache($cacheFile='',$cacheTime='') {
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if(!is_file($cacheFile) && 'sae' != APP_MODE ){
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return false;
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}elseif (filemtime(\Think\Think::instance('Think\View')->parseTemplate()) > Storage::get($cacheFile,'mtime','html')) {
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// 模板文件如果更新静态文件需要更新
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return false;
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}elseif(!is_numeric($cacheTime) && function_exists($cacheTime)){
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return $cacheTime($cacheFile);
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}elseif ($cacheTime != 0 && NOW_TIME > Storage::get($cacheFile,'mtime','html')+$cacheTime) {
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// 文件是否在有效期
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return false;
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}
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//静态文件有效
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return true;
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}
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}
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