1: <?php
  2: 
  3: /**
  4:  * This file is part of the Nette Framework (https://nette.org)
  5:  *
  6:  * Copyright (c) 2004 David Grudl (http://davidgrudl.com)
  7:  *
  8:  * For the full copyright and license information, please view
  9:  * the file license.txt that was distributed with this source code.
 10:  * @package Nette\Application
 11:  */
 12: 
 13: 
 14: 
 15: /**
 16:  * The bidirectional route for trivial routing via query string.
 17:  *
 18:  * @author     David Grudl
 19:  * @package Nette\Application
 20:  */
 21: class NSimpleRouter extends NObject implements IRouter
 22: {
 23:     const PRESENTER_KEY = 'presenter';
 24:     const MODULE_KEY = 'module';
 25: 
 26:     /** @var string */
 27:     private $module = '';
 28: 
 29:     /** @var array */
 30:     private $defaults;
 31: 
 32:     /** @var int */
 33:     private $flags;
 34: 
 35: 
 36: 
 37:     /**
 38:      * @param  array   default values
 39:      * @param  int     flags
 40:      */
 41:     public function __construct($defaults = array(), $flags = 0)
 42:     {
 43:         if (is_string($defaults)) {
 44:             $a = strrpos($defaults, ':');
 45:             if (!$a) {
 46:                 throw new InvalidArgumentException("Argument must be array or string in format Presenter:action, '$defaults' given.");
 47:             }
 48:             $defaults = array(
 49:                 self::PRESENTER_KEY => substr($defaults, 0, $a),
 50:                 'action' => $a === strlen($defaults) - 1 ? 'default' : substr($defaults, $a + 1),
 51:             );
 52:         }
 53: 
 54:         if (isset($defaults[self::MODULE_KEY])) {
 55:             $this->module = $defaults[self::MODULE_KEY] . ':';
 56:             unset($defaults[self::MODULE_KEY]);
 57:         }
 58: 
 59:         $this->defaults = $defaults;
 60:         $this->flags = $flags;
 61:     }
 62: 
 63: 
 64: 
 65:     /**
 66:      * Maps HTTP request to a PresenterRequest object.
 67:      * @param  IHttpRequest
 68:      * @return NPresenterRequest|NULL
 69:      */
 70:     public function match(IHttpRequest $httpRequest)
 71:     {
 72:         // combine with precedence: get, (post,) defaults
 73:         $params = $httpRequest->getQuery();
 74:         $params += $this->defaults;
 75: 
 76:         if (!isset($params[self::PRESENTER_KEY])) {
 77:             throw new InvalidStateException('Missing presenter.');
 78:         }
 79: 
 80:         $presenter = $this->module . $params[self::PRESENTER_KEY];
 81:         unset($params[self::PRESENTER_KEY]);
 82: 
 83:         return new NPresenterRequest(
 84:             $presenter,
 85:             $httpRequest->getMethod(),
 86:             $params,
 87:             $httpRequest->getPost(),
 88:             $httpRequest->getFiles(),
 89:             array(NPresenterRequest::SECURED => $httpRequest->isSecured())
 90:         );
 91:     }
 92: 
 93: 
 94: 
 95:     /**
 96:      * Constructs absolute URL from PresenterRequest object.
 97:      * @param  IHttpRequest
 98:      * @param  NPresenterRequest
 99:      * @return string|NULL
100:      */
101:     public function constructUrl(NPresenterRequest $appRequest, IHttpRequest $httpRequest)
102:     {
103:         $params = $appRequest->getParams();
104: 
105:         // presenter name
106:         $presenter = $appRequest->getPresenterName();
107:         if (strncasecmp($presenter, $this->module, strlen($this->module)) === 0) {
108:             $params[self::PRESENTER_KEY] = substr($presenter, strlen($this->module));
109:         } else {
110:             return NULL;
111:         }
112: 
113:         // remove default values; NULL values are retain
114:         foreach ($this->defaults as $key => $value) {
115:             if (isset($params[$key]) && $params[$key] == $value) { // intentionally ==
116:                 unset($params[$key]);
117:             }
118:         }
119: 
120:         $uri = $httpRequest->getUri();
121:         $uri = ($this->flags & self::SECURED ? 'https://' : 'http://') . $uri->getAuthority() . $uri->getScriptPath();
122:         $sep = ini_get('arg_separator.input');
123:         $query = http_build_query($params, '', $sep ? $sep[0] : '&');
124:         if ($query != '') { // intentionally ==
125:             $uri .= '?' . $query;
126:         }
127:         return $uri;
128:     }
129: 
130: 
131: 
132:     /**
133:      * Returns default values.
134:      * @return array
135:      */
136:     public function getDefaults()
137:     {
138:         return $this->defaults;
139:     }
140: 
141: }
142: