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thinkphp/library/think/route/dispatch/Url.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\route\dispatch;
+
+use think\exception\HttpException;
+use think\Loader;
+use think\route\Dispatch;
+
+class Url extends Dispatch
+{
+    public function init()
+    {
+        // 解析默认的URL规则
+        $result = $this->parseUrl($this->dispatch);
+
+        return (new Module($this->request, $this->rule, $result))->init();
+    }
+
+    public function exec()
+    {}
+
+    /**
+     * 解析URL地址
+     * @access protected
+     * @param  string   $url URL
+     * @return array
+     */
+    protected function parseUrl($url)
+    {
+        $depr = $this->rule->getConfig('pathinfo_depr');
+        $bind = $this->rule->getRouter()->getBind();
+
+        if (!empty($bind) && preg_match('/^[a-z]/is', $bind)) {
+            $bind = str_replace('/', $depr, $bind);
+            // 如果有模块/控制器绑定
+            $url = $bind . ('.' != substr($bind, -1) ? $depr : '') . ltrim($url, $depr);
+        }
+
+        list($path, $var) = $this->rule->parseUrlPath($url);
+        if (empty($path)) {
+            return [null, null, null];
+        }
+
+        // 解析模块
+        $module = $this->rule->getConfig('app_multi_module') ? array_shift($path) : null;
+
+        if ($this->param['auto_search']) {
+            $controller = $this->autoFindController($module, $path);
+        } else {
+            // 解析控制器
+            $controller = !empty($path) ? array_shift($path) : null;
+        }
+
+        if ($controller && !preg_match('/^[A-Za-z0-9][\w|\.]*$/', $controller)) {
+            throw new HttpException(404, 'controller not exists:' . $controller);
+        }
+
+        // 解析操作
+        $action = !empty($path) ? array_shift($path) : null;
+
+        // 解析额外参数
+        if ($path) {
+            if ($this->rule->getConfig('url_param_type')) {
+                $var += $path;
+            } else {
+                preg_replace_callback('/(\w+)\|([^\|]+)/', function ($match) use (&$var) {
+                    $var[$match[1]] = strip_tags($match[2]);
+                }, implode('|', $path));
+            }
+        }
+
+        $panDomain = $this->request->panDomain();
+
+        if ($panDomain && $key = array_search('*', $var)) {
+            // 泛域名赋值
+            $var[$key] = $panDomain;
+        }
+
+        // 设置当前请求的参数
+        $this->request->setRouteVars($var);
+
+        // 封装路由
+        $route = [$module, $controller, $action];
+
+        if ($this->hasDefinedRoute($route, $bind)) {
+            throw new HttpException(404, 'invalid request:' . str_replace('|', $depr, $url));
+        }
+
+        return $route;
+    }
+
+    /**
+     * 检查URL是否已经定义过路由
+     * @access protected
+     * @param  string    $route  路由信息
+     * @param  string    $bind   绑定信息
+     * @return bool
+     */
+    protected function hasDefinedRoute($route, $bind)
+    {
+        list($module, $controller, $action) = $route;
+
+        // 检查地址是否被定义过路由
+        $name = strtolower($module . '/' . Loader::parseName($controller, 1) . '/' . $action);
+
+        $name2 = '';
+
+        if (empty($module) || $module == $bind) {
+            $name2 = strtolower(Loader::parseName($controller, 1) . '/' . $action);
+        }
+
+        $host = $this->request->host(true);
+
+        $method = $this->request->method();
+
+        if ($this->rule->getRouter()->getName($name, $host, $method) || $this->rule->getRouter()->getName($name2, $host, $method)) {
+            return true;
+        }
+
+        return false;
+    }
+
+    /**
+     * 自动定位控制器类
+     * @access protected
+     * @param  string    $module 模块名
+     * @param  array     $path   URL
+     * @return string
+     */
+    protected function autoFindController($module, &$path)
+    {
+        $dir    = $this->app->getAppPath() . ($module ? $module . '/' : '') . $this->rule->getConfig('url_controller_layer');
+        $suffix = $this->app->getSuffix() || $this->rule->getConfig('controller_suffix') ? ucfirst($this->rule->getConfig('url_controller_layer')) : '';
+
+        $item = [];
+        $find = false;
+
+        foreach ($path as $val) {
+            $item[] = $val;
+            $file   = $dir . '/' . str_replace('.', '/', $val) . $suffix . '.php';
+            $file   = pathinfo($file, PATHINFO_DIRNAME) . '/' . Loader::parseName(pathinfo($file, PATHINFO_FILENAME), 1) . '.php';
+            if (is_file($file)) {
+                $find = true;
+                break;
+            } else {
+                $dir .= '/' . Loader::parseName($val);
+            }
+        }
+
+        if ($find) {
+            $controller = implode('.', $item);
+            $path       = array_slice($path, count($item));
+        } else {
+            $controller = array_shift($path);
+        }
+
+        return $controller;
+    }
+
+}