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293 lines
10 KiB
PHTML
293 lines
10 KiB
PHTML
2 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 Think;
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/**
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* ThinkPHP 视图类
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*/
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class View {
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/**
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* 模板输出变量
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* @var tVar
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* @access protected
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*/
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protected $tVar = array();
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/**
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* 模板主题
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* @var theme
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* @access protected
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*/
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protected $theme = '';
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/**
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* 模板变量赋值
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* @access public
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* @param mixed $name
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* @param mixed $value
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*/
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public function assign($name,$value=''){
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if(is_array($name)) {
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$this->tVar = array_merge($this->tVar,$name);
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}else {
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$this->tVar[$name] = $value;
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}
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}
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/**
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* 取得模板变量的值
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* @access public
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* @param string $name
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* @return mixed
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*/
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public function get($name=''){
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if('' === $name) {
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return $this->tVar;
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}
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return isset($this->tVar[$name])?$this->tVar[$name]:false;
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}
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/**
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* 加载模板和页面输出 可以返回输出内容
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* @access public
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* @param string $templateFile 模板文件名
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* @param string $charset 模板输出字符集
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* @param string $contentType 输出类型
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* @param string $content 模板输出内容
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* @param string $prefix 模板缓存前缀
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* @return mixed
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*/
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public function display($templateFile='',$charset='',$contentType='',$content='',$prefix='') {
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G('viewStartTime');
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// 解析并获取模板内容
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$content = $this->fetch($templateFile,$content,$prefix);
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// 输出模板内容
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$this->render($content,$charset,$contentType);
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}
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/**
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* 输出内容文本可以包括Html
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* @access private
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* @param string $content 输出内容
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* @param string $charset 模板输出字符集
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* @param string $contentType 输出类型
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* @return mixed
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*/
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private function render($content,$charset='',$contentType=''){
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if(empty($charset)) $charset = C('DEFAULT_CHARSET');
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if(empty($contentType)) $contentType = C('TMPL_CONTENT_TYPE');
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// 网页字符编码
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header('Content-Type:'.$contentType.'; charset='.$charset);
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header('Cache-control: '.C('HTTP_CACHE_CONTROL')); // 页面缓存控制
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header('X-Powered-By:ThinkPHP');
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// 输出模板文件
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echo $content;
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}
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/**
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* 解析和获取模板内容 用于输出
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* @access public
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* @param string $templateFile 模板文件名
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* @param string $content 模板输出内容
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* @param string $prefix 模板缓存前缀
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* @return string
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*/
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public function fetch($templateFile='',$content='',$prefix='') {
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if(empty($content)) {
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$templateFile = $this->parseTemplate($templateFile);
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// 模板文件不存在直接返回
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if(!is_file($templateFile)) E(L('_TEMPLATE_NOT_EXIST_').':'.$templateFile);
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}else{
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defined('THEME_PATH') or define('THEME_PATH', $this->getThemePath());
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}
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// 页面缓存
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ob_start();
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ob_implicit_flush(0);
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if('php' == strtolower(C('TMPL_ENGINE_TYPE'))) { // 使用PHP原生模板
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$_content = $content;
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// 模板阵列变量分解成为独立变量
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extract($this->tVar, EXTR_OVERWRITE);
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// 直接载入PHP模板
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empty($_content)?include $templateFile:eval('?>'.$_content);
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}else{
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// 视图解析标签
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$params = array('var'=>$this->tVar,'file'=>$templateFile,'content'=>$content,'prefix'=>$prefix);
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$_content = !empty($content)?:$templateFile;
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if((!empty($content) && $this->checkContentCache($content,$prefix)) || $this->checkCache($templateFile,$prefix)) { // 缓存有效
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//载入模版缓存文件
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Storage::load(C('CACHE_PATH').$prefix.md5($_content).C('TMPL_CACHFILE_SUFFIX'),$this->tVar);
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}else{
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$tpl = Think::instance('Think\\Template');
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// 编译并加载模板文件
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$tpl->fetch($_content,$this->tVar,$prefix);
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}
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}
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// 获取并清空缓存
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$content = ob_get_clean();
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// 内容过滤标签
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// 系统默认的特殊变量替换
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$replace = array(
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'__ROOT__' => __ROOT__, // 当前网站地址
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'__APP__' => __APP__, // 当前应用地址
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'__MODULE__' => __MODULE__,
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'__ACTION__' => __ACTION__, // 当前操作地址
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'__SELF__' => __SELF__, // 当前页面地址
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'__CONTROLLER__'=> __CONTROLLER__,
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'__URL__' => __CONTROLLER__,
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'__PUBLIC__' => __ROOT__.'/Public',// 站点公共目录
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);
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// 允许用户自定义模板的字符串替换
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if(is_array(C('TMPL_PARSE_STRING')) )
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$replace = array_merge($replace,C('TMPL_PARSE_STRING'));
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$content = str_replace(array_keys($replace),array_values($replace),$content);
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// 输出模板文件
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return $content;
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}
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/**
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* 检查缓存文件是否有效
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* 如果无效则需要重新编译
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* @access public
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* @param string $tmplTemplateFile 模板文件名
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* @return boolean
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*/
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protected function checkCache($tmplTemplateFile,$prefix='') {
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if (!C('TMPL_CACHE_ON')) // 优先对配置设定检测
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return false;
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$tmplCacheFile = C('CACHE_PATH').$prefix.md5($tmplTemplateFile).C('TMPL_CACHFILE_SUFFIX');
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if(!Storage::has($tmplCacheFile)){
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return false;
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}elseif (filemtime($tmplTemplateFile) > Storage::get($tmplCacheFile,'mtime')) {
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// 模板文件如果有更新则缓存需要更新
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return false;
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}elseif (C('TMPL_CACHE_TIME') != 0 && time() > Storage::get($tmplCacheFile,'mtime')+C('TMPL_CACHE_TIME')) {
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// 缓存是否在有效期
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return false;
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}
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// 开启布局模板
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if(C('LAYOUT_ON')) {
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$layoutFile = THEME_PATH.C('LAYOUT_NAME').C('TMPL_TEMPLATE_SUFFIX');
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if(filemtime($layoutFile) > Storage::get($tmplCacheFile,'mtime')) {
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return false;
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}
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}
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// 缓存有效
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return true;
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}
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/**
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* 检查缓存内容是否有效
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* 如果无效则需要重新编译
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* @access public
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* @param string $tmplContent 模板内容
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* @return boolean
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*/
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protected function checkContentCache($tmplContent,$prefix='') {
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if(Storage::has(C('CACHE_PATH').$prefix.md5($tmplContent).C('TMPL_CACHFILE_SUFFIX'))){
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return true;
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}else{
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return false;
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}
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}
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/**
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* 自动定位模板文件
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* @access protected
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* @param string $template 模板文件规则
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* @return string
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*/
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public function parseTemplate($template='') {
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if(is_file($template)) {
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return $template;
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}
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$depr = C('TMPL_FILE_DEPR');
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$template = str_replace(':', $depr, $template);
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// 获取当前模块
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$module = MODULE_NAME;
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if(strpos($template,'@')){ // 跨模块调用模版文件
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list($module,$template) = explode('@',$template);
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}
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// 获取当前主题的模版路径
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defined('THEME_PATH') or define('THEME_PATH', $this->getThemePath($module));
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// 分析模板文件规则
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if('' == $template) {
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// 如果模板文件名为空 按照默认规则定位
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$template = CONTROLLER_NAME . $depr . ACTION_NAME;
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}elseif(false === strpos($template, $depr)){
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$template = CONTROLLER_NAME . $depr . $template;
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}
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$file = THEME_PATH.$template.C('TMPL_TEMPLATE_SUFFIX');
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if(C('TMPL_LOAD_DEFAULTTHEME') && THEME_NAME != C('DEFAULT_THEME') && !is_file($file)){
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// 找不到当前主题模板的时候定位默认主题中的模板
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$file = dirname(THEME_PATH).'/'.C('DEFAULT_THEME').'/'.$template.C('TMPL_TEMPLATE_SUFFIX');
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}
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return $file;
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}
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/**
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* 获取当前的模板路径
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* @access protected
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* @param string $module 模块名
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* @return string
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*/
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protected function getThemePath($module=MODULE_NAME){
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// 获取当前主题名称
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$theme = $this->getTemplateTheme();
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// 获取当前主题的模版路径
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$tmplPath = C('VIEW_PATH'); // 模块设置独立的视图目录
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if(!$tmplPath){
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// 定义TMPL_PATH 则改变全局的视图目录到模块之外
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$tmplPath = defined('TMPL_PATH')? TMPL_PATH.$module.'/' : APP_PATH.$module.'/'.C('DEFAULT_V_LAYER').'/';
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}
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return $tmplPath.$theme;
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}
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/**
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* 设置当前输出的模板主题
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* @access public
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* @param mixed $theme 主题名称
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* @return View
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*/
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public function theme($theme){
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$this->theme = $theme;
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return $this;
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}
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/**
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* 获取当前的模板主题
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* @access private
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* @return string
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*/
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private function getTemplateTheme() {
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if($this->theme) { // 指定模板主题
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$theme = $this->theme;
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}else{
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/* 获取模板主题名称 */
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$theme = C('DEFAULT_THEME');
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if(C('TMPL_DETECT_THEME')) {// 自动侦测模板主题
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$t = C('VAR_TEMPLATE');
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if (isset($_GET[$t])){
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$theme = $_GET[$t];
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}elseif(cookie('think_template')){
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$theme = cookie('think_template');
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}
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if(!in_array($theme,explode(',',C('THEME_LIST')))){
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$theme = C('DEFAULT_THEME');
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}
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cookie('think_template',$theme,864000);
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}
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}
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defined('THEME_NAME') || define('THEME_NAME', $theme); // 当前模板主题名称
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return $theme?$theme . '/':'';
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}
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}
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