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