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301 lines
8.8 KiB
301 lines
8.8 KiB
<?php |
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/** |
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* @link http://www.yiiframework.com/ |
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* @copyright Copyright (c) 2008 Yii Software LLC |
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* @license http://www.yiiframework.com/license/ |
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*/ |
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namespace yii\web; |
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use yii\base\Object; |
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use yii\base\InvalidConfigException; |
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/** |
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* UrlRule represents a rule used for parsing and generating URLs. |
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* |
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* @author Qiang Xue <qiang.xue@gmail.com> |
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* @since 2.0 |
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*/ |
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class UrlRule extends Object |
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{ |
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/** |
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* Set [[mode]] with this value to mark that this rule is for URL parsing only |
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*/ |
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const PARSING_ONLY = 1; |
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/** |
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* Set [[mode]] with this value to mark that this rule is for URL creation only |
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*/ |
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const CREATION_ONLY = 2; |
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/** |
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* @var string the pattern used to parse and create the path info part of a URL. |
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* @see host |
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*/ |
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public $pattern; |
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/** |
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* @var string the pattern used to parse and create the host info part of a URL. |
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* @see pattern |
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*/ |
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public $host; |
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/** |
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* @var string the route to the controller action |
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*/ |
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public $route; |
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/** |
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* @var array the default GET parameters (name => value) that this rule provides. |
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* When this rule is used to parse the incoming request, the values declared in this property |
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* will be injected into $_GET. |
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*/ |
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public $defaults = array(); |
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/** |
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* @var string the URL suffix used for this rule. |
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* For example, ".html" can be used so that the URL looks like pointing to a static HTML page. |
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* If not, the value of [[UrlManager::suffix]] will be used. |
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*/ |
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public $suffix; |
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/** |
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* @var string|array the HTTP verb (e.g. GET, POST, DELETE) that this rule should match. |
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* Use array to represent multiple verbs that this rule may match. |
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* If this property is not set, the rule can match any verb. |
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* Note that this property is only used when parsing a request. It is ignored for URL creation. |
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*/ |
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public $verb; |
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/** |
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* @var integer a value indicating if this rule should be used for both request parsing and URL creation, |
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* parsing only, or creation only. |
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* If not set or 0, it means the rule is both request parsing and URL creation. |
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* If it is [[PARSING_ONLY]], the rule is for request parsing only. |
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* If it is [[CREATION_ONLY]], the rule is for URL creation only. |
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*/ |
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public $mode; |
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/** |
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* @var string the template for generating a new URL. This is derived from [[pattern]] and is used in generating URL. |
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*/ |
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private $_template; |
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/** |
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* @var string the regex for matching the route part. This is used in generating URL. |
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*/ |
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private $_routeRule; |
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/** |
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* @var array list of regex for matching parameters. This is used in generating URL. |
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*/ |
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private $_paramRules = array(); |
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/** |
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* @var array list of parameters used in the route. |
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*/ |
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private $_routeParams = array(); |
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/** |
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* Initializes this rule. |
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*/ |
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public function init() |
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{ |
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if ($this->pattern === null) { |
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throw new InvalidConfigException('UrlRule::pattern must be set.'); |
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} |
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if ($this->route === null) { |
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throw new InvalidConfigException('UrlRule::route must be set.'); |
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} |
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if ($this->verb !== null) { |
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if (is_array($this->verb)) { |
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foreach ($this->verb as $i => $verb) { |
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$this->verb[$i] = strtoupper($verb); |
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} |
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} else { |
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$this->verb = array(strtoupper($this->verb)); |
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} |
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} |
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$this->pattern = trim($this->pattern, '/'); |
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if ($this->host !== null) { |
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$this->pattern = rtrim($this->host, '/') . rtrim('/' . $this->pattern, '/') . '/'; |
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} elseif ($this->pattern === '') { |
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$this->_template = ''; |
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$this->pattern = '#^$#u'; |
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return; |
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} else { |
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$this->pattern = '/' . $this->pattern . '/'; |
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} |
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$this->route = trim($this->route, '/'); |
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if (strpos($this->route, '<') !== false && preg_match_all('/<(\w+)>/', $this->route, $matches)) { |
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foreach ($matches[1] as $name) { |
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$this->_routeParams[$name] = "<$name>"; |
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} |
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} |
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$tr = $tr2 = array(); |
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if (preg_match_all('/<(\w+):?([^>]+)?>/', $this->pattern, $matches, PREG_OFFSET_CAPTURE | PREG_SET_ORDER)) { |
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foreach ($matches as $match) { |
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$name = $match[1][0]; |
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$pattern = isset($match[2][0]) ? $match[2][0] : '[^\/]+'; |
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if (isset($this->defaults[$name])) { |
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$length = strlen($match[0][0]); |
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$offset = $match[0][1]; |
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if ($offset > 1 && $this->pattern[$offset - 1] === '/' && $this->pattern[$offset + $length] === '/') { |
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$tr["/<$name>"] = "(/(?P<$name>$pattern))?"; |
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} else { |
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$tr["<$name>"] = "(?P<$name>$pattern)?"; |
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} |
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} else { |
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$tr["<$name>"] = "(?P<$name>$pattern)"; |
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} |
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if (isset($this->_routeParams[$name])) { |
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$tr2["<$name>"] = "(?P<$name>$pattern)"; |
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} else { |
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$this->_paramRules[$name] = $pattern === '[^\/]+' ? '' : "#^$pattern$#"; |
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} |
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} |
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} |
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$this->_template = preg_replace('/<(\w+):?([^>]+)?>/', '<$1>', $this->pattern); |
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$this->pattern = '#^' . trim(strtr($this->_template, $tr), '/') . '$#u'; |
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if (!empty($this->_routeParams)) { |
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$this->_routeRule = '#^' . strtr($this->route, $tr2) . '$#u'; |
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} |
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} |
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/** |
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* Parses the given request and returns the corresponding route and parameters. |
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* @param UrlManager $manager the URL manager |
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* @param Request $request the request component |
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* @return array|boolean the parsing result. The route and the parameters are returned as an array. |
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* If false, it means this rule cannot be used to parse this path info. |
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*/ |
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public function parseRequest($manager, $request) |
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{ |
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if ($this->mode === self::CREATION_ONLY) { |
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return false; |
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} |
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if ($this->verb !== null && !in_array($request->getMethod(), $this->verb, true)) { |
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return false; |
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} |
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$pathInfo = $request->getPathInfo(); |
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$suffix = (string)($this->suffix === null ? $manager->suffix : $this->suffix); |
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if ($suffix !== '' && $pathInfo !== '') { |
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$n = strlen($suffix); |
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if (substr($pathInfo, -$n) === $suffix) { |
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$pathInfo = substr($pathInfo, 0, -$n); |
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if ($pathInfo === '') { |
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// suffix alone is not allowed |
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return false; |
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} |
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} elseif ($suffix !== '/') { |
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// we allow the ending '/' to be optional if it is a suffix |
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return false; |
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} |
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} |
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if ($this->host !== null) { |
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$pathInfo = strtolower($request->getHostInfo()) . '/' . $pathInfo; |
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} |
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if (!preg_match($this->pattern, $pathInfo, $matches)) { |
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return false; |
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} |
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foreach ($this->defaults as $name => $value) { |
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if (!isset($matches[$name]) || $matches[$name] === '') { |
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$matches[$name] = $value; |
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} |
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} |
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$params = $this->defaults; |
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$tr = array(); |
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foreach ($matches as $name => $value) { |
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if (isset($this->_routeParams[$name])) { |
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$tr[$this->_routeParams[$name]] = $value; |
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unset($params[$name]); |
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} elseif (isset($this->_paramRules[$name])) { |
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$params[$name] = $value; |
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} |
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} |
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if ($this->_routeRule !== null) { |
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$route = strtr($this->route, $tr); |
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} else { |
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$route = $this->route; |
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} |
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return array($route, $params); |
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} |
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/** |
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* Creates a URL according to the given route and parameters. |
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* @param UrlManager $manager the URL manager |
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* @param string $route the route. It should not have slashes at the beginning or the end. |
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* @param array $params the parameters |
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* @return string|boolean the created URL, or false if this rule cannot be used for creating this URL. |
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*/ |
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public function createUrl($manager, $route, $params) |
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{ |
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if ($this->mode === self::PARSING_ONLY) { |
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return false; |
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} |
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$tr = array(); |
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// match the route part first |
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if ($route !== $this->route) { |
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if ($this->_routeRule !== null && preg_match($this->_routeRule, $route, $matches)) { |
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foreach ($this->_routeParams as $name => $token) { |
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if (isset($this->defaults[$name]) && strcmp($this->defaults[$name], $matches[$name]) === 0) { |
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$tr[$token] = ''; |
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} else { |
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$tr[$token] = $matches[$name]; |
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} |
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} |
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} else { |
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return false; |
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} |
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} |
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// match default params |
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// if a default param is not in the route pattern, its value must also be matched |
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foreach ($this->defaults as $name => $value) { |
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if (isset($this->_routeParams[$name])) { |
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continue; |
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} |
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if (!isset($params[$name])) { |
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return false; |
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} elseif (strcmp($params[$name], $value) === 0) { // strcmp will do string conversion automatically |
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unset($params[$name]); |
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if (isset($this->_paramRules[$name])) { |
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$tr["<$name>"] = ''; |
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} |
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} elseif (!isset($this->_paramRules[$name])) { |
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return false; |
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} |
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} |
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// match params in the pattern |
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foreach ($this->_paramRules as $name => $rule) { |
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if (isset($params[$name]) && ($rule === '' || preg_match($rule, $params[$name]))) { |
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$tr["<$name>"] = urlencode($params[$name]); |
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unset($params[$name]); |
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} elseif (!isset($this->defaults[$name]) || isset($params[$name])) { |
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return false; |
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} |
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} |
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$url = trim(strtr($this->_template, $tr), '/'); |
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if ($this->host !== null) { |
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$pos = strpos($url, '/', 8); |
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if ($pos !== false) { |
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$url = substr($url, 0, $pos) . preg_replace('#/+#', '/', substr($url, $pos)); |
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} |
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} elseif (strpos($url, '//') !== false) { |
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$url = preg_replace('#/+#', '/', $url); |
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} |
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if ($url !== '') { |
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$url .= ($this->suffix === null ? $manager->suffix : $this->suffix); |
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} |
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if (!empty($params)) { |
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$url .= '?' . http_build_query($params); |
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} |
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return $url; |
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} |
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}
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