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:  */
 11: 
 12: namespace Nette\Application;
 13: 
 14: use Nette;
 15: 
 16: 
 17: 
 18: /**
 19:  * The bidirectional route for trivial routing via query string.
 20:  *
 21:  * @author     David Grudl
 22:  */
 23: class SimpleRouter extends Nette\Object implements IRouter
 24: {
 25:     const PRESENTER_KEY = 'presenter';
 26:     const MODULE_KEY = 'module';
 27: 
 28:     /** @var string */
 29:     private $module = '';
 30: 
 31:     /** @var array */
 32:     private $defaults;
 33: 
 34:     /** @var int */
 35:     private $flags;
 36: 
 37: 
 38: 
 39:     /**
 40:      * @param  array   default values
 41:      * @param  int     flags
 42:      */
 43:     public function __construct($defaults = array(), $flags = 0)
 44:     {
 45:         if (is_string($defaults)) {
 46:             $a = strrpos($defaults, ':');
 47:             if (!$a) {
 48:                 throw new \InvalidArgumentException("Argument must be array or string in format Presenter:action, '$defaults' given.");
 49:             }
 50:             $defaults = array(
 51:                 self::PRESENTER_KEY => substr($defaults, 0, $a),
 52:                 'action' => $a === strlen($defaults) - 1 ? 'default' : substr($defaults, $a + 1),
 53:             );
 54:         }
 55: 
 56:         if (isset($defaults[self::MODULE_KEY])) {
 57:             $this->module = $defaults[self::MODULE_KEY] . ':';
 58:             unset($defaults[self::MODULE_KEY]);
 59:         }
 60: 
 61:         $this->defaults = $defaults;
 62:         $this->flags = $flags;
 63:     }
 64: 
 65: 
 66: 
 67:     /**
 68:      * Maps HTTP request to a PresenterRequest object.
 69:      * @param  Nette\Web\IHttpRequest
 70:      * @return PresenterRequest|NULL
 71:      */
 72:     public function match(Nette\Web\IHttpRequest $httpRequest)
 73:     {
 74:         // combine with precedence: get, (post,) defaults
 75:         $params = $httpRequest->getQuery();
 76:         $params += $this->defaults;
 77: 
 78:         if (!isset($params[self::PRESENTER_KEY])) {
 79:             throw new \InvalidStateException('Missing presenter.');
 80:         }
 81: 
 82:         $presenter = $this->module . $params[self::PRESENTER_KEY];
 83:         unset($params[self::PRESENTER_KEY]);
 84: 
 85:         return new PresenterRequest(
 86:             $presenter,
 87:             $httpRequest->getMethod(),
 88:             $params,
 89:             $httpRequest->getPost(),
 90:             $httpRequest->getFiles(),
 91:             array(PresenterRequest::SECURED => $httpRequest->isSecured())
 92:         );
 93:     }
 94: 
 95: 
 96: 
 97:     /**
 98:      * Constructs absolute URL from PresenterRequest object.
 99:      * @param  Nette\Web\IHttpRequest
100:      * @param  PresenterRequest
101:      * @return string|NULL
102:      */
103:     public function constructUrl(PresenterRequest $appRequest, Nette\Web\IHttpRequest $httpRequest)
104:     {
105:         $params = $appRequest->getParams();
106: 
107:         // presenter name
108:         $presenter = $appRequest->getPresenterName();
109:         if (strncasecmp($presenter, $this->module, strlen($this->module)) === 0) {
110:             $params[self::PRESENTER_KEY] = substr($presenter, strlen($this->module));
111:         } else {
112:             return NULL;
113:         }
114: 
115:         // remove default values; NULL values are retain
116:         foreach ($this->defaults as $key => $value) {
117:             if (isset($params[$key]) && $params[$key] == $value) { // intentionally ==
118:                 unset($params[$key]);
119:             }
120:         }
121: 
122:         $uri = $httpRequest->getUri();
123:         $uri = ($this->flags & self::SECURED ? 'https://' : 'http://') . $uri->getAuthority() . $uri->getScriptPath();
124:         $sep = ini_get('arg_separator.input');
125:         $query = http_build_query($params, '', $sep ? $sep[0] : '&');
126:         if ($query != '') { // intentionally ==
127:             $uri .= '?' . $query;
128:         }
129:         return $uri;
130:     }
131: 
132: 
133: 
134:     /**
135:      * Returns default values.
136:      * @return array
137:      */
138:     public function getDefaults()
139:     {
140:         return $this->defaults;
141:     }
142: 
143: }
144: