<?php
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class LtUrl
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{
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public $configHandle;
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public $routingTable;
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public $baseUrl;
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public function __construct()
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{
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if (! $this->configHandle instanceof LtConfig)
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{
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if (class_exists("LtObjectUtil", false))
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{
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$this->configHandle = LtObjectUtil::singleton("LtConfig");
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}
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else
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{
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$this->configHandle = new LtConfig;
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}
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}
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}
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public function init()
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{
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$this->routingTable = $this->configHandle->get("router.routing_table");
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if (empty($this->routingTable))
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{
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$this->routingTable = array('pattern' => ":module/:action/*",
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'default' => array('module' => 'default', 'action' => 'index'),
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'reqs' => array('module' => '[a-zA-Z0-9\.\-_]+',
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'action' => '[a-zA-Z0-9\.\-_]+'
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),
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'varprefix' => ':',
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'delimiter' => '/',
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'postfix' => '',
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'protocol' => 'PATH_INFO', // REWRITE STANDARD
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);
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}
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$protocol = strtoupper($this->routingTable['protocol']);
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if ('REWRITE' == $protocol)
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{
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$this->baseUrl = pathinfo($_SERVER['SCRIPT_NAME'], PATHINFO_DIRNAME) . '/';
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}
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else if ('STANDARD' == $protocol)
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{
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$this->baseUrl = $_SERVER['PHP_SELF'];
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}
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else
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{
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$this->baseUrl = '';
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}
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}
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public function generate($module, $action, $args = array())
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{
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$args = array_merge(array('module' => $module, 'action' => $action), $args);
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$url = '';
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// $url = $_SERVER['SERVER_PORT'] == '443' ? 'https://' : 'http://';
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// $url .= $_SERVER['HTTP_HOST'];
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// $url .= $_SERVER['SERVER_PORT'] == '80' ? '' : ':'.$_SERVER['SERVER_PORT'];
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$url .= $this->baseUrl;
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$url .= $this->reverseMatchingRoutingTable($args);
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return $url;
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}
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/**
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* 将变量反向匹配路由表, 返回匹配后的url
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*
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* @param array $params
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* @return string
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*/
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public function reverseMatchingRoutingTable($args)
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{
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$ret = $this->routingTable['pattern'];
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$default = $this->routingTable['default'];
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$reqs = $this->routingTable['reqs'];
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$delimiter = $this->routingTable['delimiter'];
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$varprefix = $this->routingTable['varprefix'];
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$postfix = $this->routingTable['postfix'];
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$protocol = strtoupper($this->routingTable['protocol']);
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if ('STANDARD' == $protocol)
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{
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return '?' . http_build_query($args, '', '&');
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}
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$pattern = explode($delimiter, trim($this->routingTable['pattern'], $delimiter));
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foreach($pattern as $k => $v)
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{
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if ($v[0] == $varprefix)
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{
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// 变量
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$varname = substr($v, 1);
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// 匹配变量
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if (isset($args[$varname]))
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{
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$regex = "/^{$reqs[$varname]}\$/i";
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if (preg_match($regex, $args[$varname]))
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{
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$ret = str_replace($v, $args[$varname], $ret);
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unset($args[$varname]);
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}
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}
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else if (isset($default[$varname]))
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{
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$ret = str_replace($v, $default[$varname], $ret);
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}
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}
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else if ($v[0] == '*')
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{
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// 通配符
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$tmp = '';
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foreach($args as $key => $value)
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{
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if (!isset($default[$key]))
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{
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$tmp .= $key . $delimiter . rawurlencode($value) . $delimiter;
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}
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}
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$tmp = rtrim($tmp, $delimiter);
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$ret = str_replace($v, $tmp, $ret);
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$ret = rtrim($ret, $delimiter);
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}
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else
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{
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// 静态
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}
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}
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if ('REWRITE' == $protocol)
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{
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$ret = $ret . $postfix;
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}
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else if ('PATH_INFO' == $protocol)
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{
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$ret = $_SERVER['SCRIPT_NAME'] . $delimiter . $ret . $postfix;
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}
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else
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{
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$ret = $ret . $postfix;
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}
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return $ret;
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}
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}
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