thinkphp/library/think/View.php

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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
     */