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- <?php
- // +----------------------------------------------------------------------
- // | ThinkPHP [ WE CAN DO IT JUST THINK ]
- // +----------------------------------------------------------------------
- // | Copyright (c) 2006~2018 http://thinkphp.cn All rights reserved.
- // +----------------------------------------------------------------------
- // | Licensed ( http://www.apache.org/licenses/LICENSE-2.0 )
- // +----------------------------------------------------------------------
- // | Author: liu21st <liu21st@gmail.com>
- // +----------------------------------------------------------------------
-
- namespace think;
-
- class View
- {
- // 视图实例
- protected static $instance;
- // 模板引擎实例
- public $engine;
- // 模板变量
- protected $data = [];
- // 用于静态赋值的模板变量
- protected static $var = [];
- // 视图输出替换
- protected $replace = [];
-
- /**
- * 构造函数
- * @access public
- * @param array $engine 模板引擎参数
- * @param array $replace 字符串替换参数
- */
- public function __construct($engine = [], $replace = [])
- {
- // 初始化模板引擎
- $this->engine($engine);
- // 基础替换字符串
- $request = Request::instance();
- $base = $request->root();
- $root = strpos($base, '.') ? ltrim(dirname($base), DS) : $base;
- if ('' != $root) {
- $root = '/' . ltrim($root, '/');
- }
- $baseReplace = [
- '__ROOT__' => $root,
- '__URL__' => $base . '/' . $request->module() . '/' . Loader::parseName($request->controller()),
- '__STATIC__' => $root . '/static',
- '__CSS__' => $root . '/static/css',
- '__JS__' => $root . '/static/js',
- ];
- $this->replace = array_merge($baseReplace, (array) $replace);
- }
-
- /**
- * 初始化视图
- * @access public
- * @param array $engine 模板引擎参数
- * @param array $replace 字符串替换参数
- * @return object
- */
- public static function instance($engine = [], $replace = [])
- {
- if (is_null(self::$instance)) {
- self::$instance = new self($engine, $replace);
- }
- return self::$instance;
- }
-
- /**
- * 模板变量静态赋值
- * @access public
- * @param mixed $name 变量名
- * @param mixed $value 变量值
- * @return void
- */
- public static function share($name, $value = '')
- {
- if (is_array($name)) {
- self::$var = array_merge(self::$var, $name);
- } else {
- self::$var[$name] = $value;
- }
- }
-
- /**
- * 模板变量赋值
- * @access public
- * @param mixed $name 变量名
- * @param mixed $value 变量值
- * @return $this
- */
- public function assign($name, $value = '')
- {
- if (is_array($name)) {
- $this->data = array_merge($this->data, $name);
- } else {
- $this->data[$name] = $value;
- }
- return $this;
- }
-
- /**
- * 设置当前模板解析的引擎
- * @access public
- * @param array|string $options 引擎参数
- * @return $this
- */
- public function engine($options = [])
- {
- if (is_string($options)) {
- $type = $options;
- $options = [];
- } else {
- $type = !empty($options['type']) ? $options['type'] : 'Think';
- }
-
- $class = false !== strpos($type, '\\') ? $type : '\\think\\view\\driver\\' . ucfirst($type);
- if (isset($options['type'])) {
- unset($options['type']);
- }
- $this->engine = new $class($options);
- return $this;
- }
-
- /**
- * 配置模板引擎
- * @access private
- * @param string|array $name 参数名
- * @param mixed $value 参数值
- * @return $this
- */
- public function config($name, $value = null)
- {
- $this->engine->config($name, $value);
- return $this;
- }
-
- /**
- * 解析和获取模板内容 用于输出
- * @param string $template 模板文件名或者内容
- * @param array $vars 模板输出变量
- * @param array $replace 替换内容
- * @param array $config 模板参数
- * @param bool $renderContent 是否渲染内容
- * @return string
- * @throws Exception
- */
- public function fetch($template = '', $vars = [], $replace = [], $config = [], $renderContent = false)
- {
- // 模板变量
- $vars = array_merge(self::$var, $this->data, $vars);
-
- // 页面缓存
- ob_start();
- ob_implicit_flush(0);
-
- // 渲染输出
- try {
- $method = $renderContent ? 'display' : 'fetch';
- // 允许用户自定义模板的字符串替换
- $replace = array_merge($this->replace, $replace, (array) $this->engine->config('tpl_replace_string'));
- $this->engine->config('tpl_replace_string', $replace);
- $this->engine->$method($template, $vars, $config);
- } catch (\Exception $e) {
- ob_end_clean();
- throw $e;
- }
-
- // 获取并清空缓存
- $content = ob_get_clean();
- // 内容过滤标签
- Hook::listen('view_filter', $content);
- return $content;
- }
-
- /**
- * 视图内容替换
- * @access public
- * @param string|array $content 被替换内容(支持批量替换)
- * @param string $replace 替换内容
- * @return $this
- */
- public function replace($content, $replace = '')
- {
- if (is_array($content)) {
- $this->replace = array_merge($this->replace, $content);
- } else {
- $this->replace[$content] = $replace;
- }
- return $this;
- }
-
- /**
- * 渲染内容输出
- * @access public
- * @param string $content 内容
- * @param array $vars 模板输出变量
- * @param array $replace 替换内容
- * @param array $config 模板参数
- * @return mixed
- */
- public function display($content, $vars = [], $replace = [], $config = [])
- {
- return $this->fetch($content, $vars, $replace, $config, true);
- }
-
- /**
- * 模板变量赋值
- * @access public
- * @param string $name 变量名
- * @param mixed $value 变量值
- */
- public function __set($name, $value)
- {
- $this->data[$name] = $value;
- }
-
- /**
- * 取得模板显示变量的值
- * @access protected
- * @param string $name 模板变量
- * @return mixed
- */
- public function __get($name)
- {
- return $this->data[$name];
- }
-
- /**
- * 检测模板变量是否设置
- * @access public
- * @param string $name 模板变量名
- * @return bool
- */
- public function __isset($name)
- {
- return isset($this->data[$name]);
- }
- }
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