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239 lines
6.8 KiB
239 lines
6.8 KiB
<?php
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// +----------------------------------------------------------------------
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// | ThinkPHP [ WE CAN DO IT JUST THINK ]
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// +----------------------------------------------------------------------
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// | Copyright (c) 2006~2018 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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class View
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{
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// 视图实例
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protected static $instance;
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// 模板引擎实例
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public $engine;
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// 模板变量
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protected $data = [];
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// 用于静态赋值的模板变量
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protected static $var = [];
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// 视图输出替换
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protected $replace = [];
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/**
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* 构造函数
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* @access public
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* @param array $engine 模板引擎参数
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* @param array $replace 字符串替换参数
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*/
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public function __construct($engine = [], $replace = [])
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{
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// 初始化模板引擎
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$this->engine($engine);
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// 基础替换字符串
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$request = Request::instance();
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$base = $request->root();
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$root = strpos($base, '.') ? ltrim(dirname($base), DS) : $base;
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if ('' != $root) {
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$root = '/' . ltrim($root, '/');
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}
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$baseReplace = [
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'__ROOT__' => $root,
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'__URL__' => $base . '/' . $request->module() . '/' . Loader::parseName($request->controller()),
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'__STATIC__' => $root . '/static',
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'__CSS__' => $root . '/static/css',
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'__JS__' => $root . '/static/js',
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];
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$this->replace = array_merge($baseReplace, (array) $replace);
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}
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/**
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* 初始化视图
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* @access public
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* @param array $engine 模板引擎参数
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* @param array $replace 字符串替换参数
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* @return object
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*/
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public static function instance($engine = [], $replace = [])
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{
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if (is_null(self::$instance)) {
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self::$instance = new self($engine, $replace);
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}
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return self::$instance;
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}
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/**
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* 模板变量静态赋值
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* @access public
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* @param mixed $name 变量名
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* @param mixed $value 变量值
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* @return void
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*/
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public static function share($name, $value = '')
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{
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if (is_array($name)) {
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self::$var = array_merge(self::$var, $name);
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} else {
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self::$var[$name] = $value;
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}
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}
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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 变量名
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* @param mixed $value 变量值
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* @return $this
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*/
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public function assign($name, $value = '')
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{
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if (is_array($name)) {
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$this->data = array_merge($this->data, $name);
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} else {
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$this->data[$name] = $value;
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}
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return $this;
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}
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/**
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* 设置当前模板解析的引擎
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* @access public
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* @param array|string $options 引擎参数
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* @return $this
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*/
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public function engine($options = [])
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{
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if (is_string($options)) {
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$type = $options;
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$options = [];
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} else {
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$type = !empty($options['type']) ? $options['type'] : 'Think';
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}
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$class = false !== strpos($type, '\\') ? $type : '\\think\\view\\driver\\' . ucfirst($type);
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if (isset($options['type'])) {
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unset($options['type']);
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}
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$this->engine = new $class($options);
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return $this;
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}
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/**
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* 配置模板引擎
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* @access private
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* @param string|array $name 参数名
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* @param mixed $value 参数值
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* @return $this
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*/
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public function config($name, $value = null)
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{
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$this->engine->config($name, $value);
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return $this;
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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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* @param string $template 模板文件名或者内容
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* @param array $vars 模板输出变量
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* @param array $replace 替换内容
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* @param array $config 模板参数
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* @param bool $renderContent 是否渲染内容
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* @return string
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* @throws Exception
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*/
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public function fetch($template = '', $vars = [], $replace = [], $config = [], $renderContent = false)
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{
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// 模板变量
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$vars = array_merge(self::$var, $this->data, $vars);
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// 页面缓存
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ob_start();
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ob_implicit_flush(0);
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// 渲染输出
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try {
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$method = $renderContent ? 'display' : 'fetch';
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// 允许用户自定义模板的字符串替换
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$replace = array_merge($this->replace, $replace, (array) $this->engine->config('tpl_replace_string'));
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$this->engine->config('tpl_replace_string', $replace);
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$this->engine->$method($template, $vars, $config);
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} catch (\Exception $e) {
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ob_end_clean();
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throw $e;
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}
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// 获取并清空缓存
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$content = ob_get_clean();
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// 内容过滤标签
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Hook::listen('view_filter', $content);
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return $content;
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}
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/**
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* 视图内容替换
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* @access public
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* @param string|array $content 被替换内容（支持批量替换）
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* @param string $replace 替换内容
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* @return $this
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*/
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public function replace($content, $replace = '')
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{
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if (is_array($content)) {
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$this->replace = array_merge($this->replace, $content);
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} else {
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$this->replace[$content] = $replace;
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}
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return $this;
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}
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/**
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* 渲染内容输出
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* @access public
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* @param string $content 内容
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* @param array $vars 模板输出变量
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* @param array $replace 替换内容
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* @param array $config 模板参数
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* @return mixed
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*/
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public function display($content, $vars = [], $replace = [], $config = [])
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{
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return $this->fetch($content, $vars, $replace, $config, true);
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}
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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 string $name 变量名
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* @param mixed $value 变量值
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*/
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public function __set($name, $value)
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{
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$this->data[$name] = $value;
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}
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/**
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* 取得模板显示变量的值
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* @access protected
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* @param string $name 模板变量
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* @return mixed
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*/
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public function __get($name)
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{
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return $this->data[$name];
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}
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/**
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* 检测模板变量是否设置
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* @access public
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* @param string $name 模板变量名
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* @return bool
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*/
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public function __isset($name)
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{
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return isset($this->data[$name]);
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}
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}
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