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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路由解析类
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*/
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class Route {
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// 路由检测
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public static function check(){
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$depr = C('URL_PATHINFO_DEPR');
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$regx = preg_replace('/\.'.__EXT__.'$/i','',trim($_SERVER['PATH_INFO'],$depr));
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// 分隔符替换 确保路由定义使用统一的分隔符
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if('/' != $depr){
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$regx = str_replace($depr,'/',$regx);
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}
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// URL映射定义（静态路由）
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$maps = C('URL_MAP_RULES');
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if(isset($maps[$regx])) {
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$var = self::parseUrl($maps[$regx]);
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$_GET = array_merge($var, $_GET);
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return true;
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}
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// 动态路由处理
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$routes = C('URL_ROUTE_RULES');
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if(!empty($routes)) {
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foreach ($routes as $rule=>$route){
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if(is_numeric($rule)){
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// 支持 array('rule','adddress',...) 定义路由
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$rule = array_shift($route);
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}
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if(is_array($route) && isset($route[2])){
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// 路由参数
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$options = $route[2];
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if(isset($options['ext']) && __EXT__ != $options['ext']){
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// URL后缀检测
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continue;
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}
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if(isset($options['method']) && REQUEST_METHOD != strtoupper($options['method'])){
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// 请求类型检测
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continue;
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}
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// 自定义检测
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if(!empty($options['callback']) && is_callable($options['callback'])) {
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if(false === call_user_func($options['callback'])) {
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continue;
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}
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}
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}
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if(0===strpos($rule,'/') && preg_match($rule,$regx,$matches)) { // 正则路由
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if($route instanceof \Closure) {
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// 执行闭包
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$result = self::invokeRegx($route, $matches);
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// 如果返回布尔值 则继续执行
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return is_bool($result) ? $result : exit;
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}else{
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return self::parseRegex($matches,$route,$regx);
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}
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}else{ // 规则路由
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$len1 = substr_count($regx,'/');
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$len2 = substr_count($rule,'/');
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if($len1>=$len2 || strpos($rule,'[')) {
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if('$' == substr($rule,-1,1)) {// 完整匹配
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if($len1 != $len2) {
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continue;
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}else{
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$rule = substr($rule,0,-1);
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}
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}
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$match = self::checkUrlMatch($regx,$rule);
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if(false !== $match) {
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if($route instanceof \Closure) {
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// 执行闭包
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$result = self::invokeRule($route, $match);
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// 如果返回布尔值 则继续执行
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return is_bool($result) ? $result : exit;
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}else{
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return self::parseRule($rule,$route,$regx);
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}
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}
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}
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}
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}
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}
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return false;
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}
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// 检测URL和规则路由是否匹配
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private static function checkUrlMatch($regx,$rule) {
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$m1 = explode('/',$regx);
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$m2 = explode('/',$rule);
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$var = array();
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foreach ($m2 as $key=>$val){
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if(0 === strpos($val,'[:')){
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$val = substr($val,1,-1);
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}
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if(':' == substr($val,0,1)) {// 动态变量
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if($pos = strpos($val,'|')){
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// 使用函数过滤
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$val = substr($val,1,$pos-1);
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}
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if(strpos($val,'\\')) {
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$type = substr($val,-1);
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if('d'==$type) {
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if(isset($m1[$key]) && !is_numeric($m1[$key]))
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return false;
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}
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$name = substr($val, 1, -2);
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}elseif($pos = strpos($val,'^')){
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$array = explode('-',substr(strstr($val,'^'),1));
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if(in_array($m1[$key],$array)) {
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return false;
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}
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$name = substr($val, 1, $pos - 1);
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}else{
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$name = substr($val, 1);
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}
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$var[$name] = isset($m1[$key])?$m1[$key]:'';
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}elseif(0 !== strcasecmp($val,$m1[$key])){
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return false;
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}
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}
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// 成功匹配后返回URL中的动态变量数组
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return $var;
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}
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// 解析规范的路由地址
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// 地址格式 [控制器/操作?]参数1=值1&参数2=值2...
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private static function parseUrl($url) {
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$var = array();
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if(false !== strpos($url,'?')) { // [控制器/操作?]参数1=值1&参数2=值2...
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$info = parse_url($url);
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$path = explode('/',$info['path']);
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parse_str($info['query'],$var);
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}elseif(strpos($url,'/')){ // [控制器/操作]
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$path = explode('/',$url);
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}else{ // 参数1=值1&参数2=值2...
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parse_str($url,$var);
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}
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if(isset($path)) {
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$var[C('VAR_ACTION')] = array_pop($path);
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if(!empty($path)) {
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$var[C('VAR_CONTROLLER')] = array_pop($path);
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}
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if(!empty($path)) {
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$var[C('VAR_MODULE')] = array_pop($path);
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}
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}
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return $var;
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}
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// 解析规则路由
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// '路由规则'=>'[控制器/操作]?额外参数1=值1&额外参数2=值2...'
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// '路由规则'=>array('[控制器/操作]','额外参数1=值1&额外参数2=值2...')
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// '路由规则'=>'外部地址'
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// '路由规则'=>array('外部地址','重定向代码')
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// 路由规则中 :开头 表示动态变量
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// 外部地址中可以用动态变量 采用 :1 :2 的方式
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// 'news/:month/:day/:id'=>array('News/read?cate=1','status=1'),
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// 'new/:id'=>array('/new.php?id=:1',301), 重定向
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private static function parseRule($rule,$route,$regx) {
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// 获取路由地址规则
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$url = is_array($route)?$route[0]:$route;
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// 获取URL地址中的参数
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$paths = explode('/',$regx);
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// 解析路由规则
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$matches = array();
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$rule = explode('/',$rule);
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foreach ($rule as $item){
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$fun = '';
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if(0 === strpos($item,'[:')){
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$item = substr($item,1,-1);
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}
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if(0===strpos($item,':')) { // 动态变量获取
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if($pos = strpos($item,'|')){
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// 支持函数过滤
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$fun = substr($item,$pos+1);
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$item = substr($item,0,$pos);
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}
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if($pos = strpos($item,'^') ) {
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$var = substr($item,1,$pos-1);
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}elseif(strpos($item,'\\')){
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$var = substr($item,1,-2);
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}else{
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$var = substr($item,1);
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}
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$matches[$var] = !empty($fun)? $fun(array_shift($paths)) : array_shift($paths);
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}else{ // 过滤URL中的静态变量
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array_shift($paths);
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}
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}
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if(0=== strpos($url,'/') || 0===strpos($url,'http')) { // 路由重定向跳转
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if(strpos($url,':')) { // 传递动态参数
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$values = array_values($matches);
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$url = preg_replace_callback('/:(\d+)/', function($match) use($values){ return $values[$match[1] - 1]; }, $url);
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}
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header("Location: $url", true,(is_array($route) && isset($route[1]))?$route[1]:301);
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exit;
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}else{
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// 解析路由地址
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$var = self::parseUrl($url);
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// 解析路由地址里面的动态参数
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$values = array_values($matches);
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foreach ($var as $key=>$val){
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if(0===strpos($val,':')) {
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$var[$key] = $values[substr($val,1)-1];
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}
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}
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$var = array_merge($matches,$var);
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// 解析剩余的URL参数
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if(!empty($paths)) {
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preg_replace_callback('/(\w+)\/([^\/]+)/', function($match) use(&$var){ $var[strtolower($match[1])]=strip_tags($match[2]);}, implode('/',$paths));
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}
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// 解析路由自动传入参数
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if(is_array($route) && isset($route[1])) {
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if(is_array($route[1])){
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$params = $route[1];
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}else{
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parse_str($route[1],$params);
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}
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$var = array_merge($var,$params);
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}
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$_GET = array_merge($var,$_GET);
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}
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return true;
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}
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// 解析正则路由
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// '路由正则'=>'[控制器/操作]?参数1=值1&参数2=值2...'
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// '路由正则'=>array('[控制器/操作]?参数1=值1&参数2=值2...','额外参数1=值1&额外参数2=值2...')
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// '路由正则'=>'外部地址'
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// '路由正则'=>array('外部地址','重定向代码')
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// 参数值和外部地址中可以用动态变量 采用 :1 :2 的方式
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// '/new\/(\d+)\/(\d+)/'=>array('News/read?id=:1&page=:2&cate=1','status=1'),
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// '/new\/(\d+)/'=>array('/new.php?id=:1&page=:2&status=1','301'), 重定向
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private static function parseRegex($matches,$route,$regx) {
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// 获取路由地址规则
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$url = is_array($route)?$route[0]:$route;
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$url = preg_replace_callback('/:(\d+)/', function($match) use($matches){return $matches[$match[1]];}, $url);
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if(0=== strpos($url,'/') || 0===strpos($url,'http')) { // 路由重定向跳转
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header("Location: $url", true,(is_array($route) && isset($route[1]))?$route[1]:301);
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exit;
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}else{
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// 解析路由地址
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$var = self::parseUrl($url);
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// 处理函数
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foreach($var as $key=>$val){
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if(strpos($val,'|')){
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list($val,$fun) = explode('|',$val);
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$var[$key] = $fun($val);
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}
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}
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// 解析剩余的URL参数
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$regx = substr_replace($regx,'',0,strlen($matches[0]));
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if($regx) {
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preg_replace_callback('/(\w+)\/([^\/]+)/', function($match) use(&$var){
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$var[strtolower($match[1])] = strip_tags($match[2]);
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}, $regx);
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}
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// 解析路由自动传入参数
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if(is_array($route) && isset($route[1])) {
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if(is_array($route[1])){
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$params = $route[1];
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}else{
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parse_str($route[1],$params);
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}
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$var = array_merge($var,$params);
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}
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$_GET = array_merge($var,$_GET);
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}
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return true;
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}
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// 执行正则匹配下的闭包方法 支持参数调用
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static private function invokeRegx($closure, $var = array()) {
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$reflect = new \ReflectionFunction($closure);
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$params = $reflect->getParameters();
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$args = array();
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array_shift($var);
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foreach ($params as $param){
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if(!empty($var)) {
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$args[] = array_shift($var);
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}elseif($param->isDefaultValueAvailable()){
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$args[] = $param->getDefaultValue();
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}
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}
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return $reflect->invokeArgs($args);
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}
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// 执行规则匹配下的闭包方法 支持参数调用
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static private function invokeRule($closure, $var = array()) {
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$reflect = new \ReflectionFunction($closure);
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$params = $reflect->getParameters();
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$args = array();
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foreach ($params as $param){
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$name = $param->getName();
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if(isset($var[$name])) {
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$args[] = $var[$name];
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}elseif($param->isDefaultValueAvailable()){
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$args[] = $param->getDefaultValue();
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}
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}
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return $reflect->invokeArgs($args);
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}
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} |