1: <?php
  2: 
  3: /**
  4:  * This file is part of the Nette Framework (https://nette.org)
  5:  * Copyright (c) 2004 David Grudl (http://davidgrudl.com)
  6:  * @package Nette\Application\Routers
  7:  */
  8: 
  9: 
 10: 
 11: /**
 12:  * The bidirectional route for trivial routing via query parameters.
 13:  *
 14:  * @author     David Grudl
 15:  *
 16:  * @property-read array $defaults
 17:  * @property-read int $flags
 18:  * @package Nette\Application\Routers
 19:  */
 20: class NSimpleRouter extends NObject implements IRouter
 21: {
 22:     const PRESENTER_KEY = 'presenter';
 23:     const MODULE_KEY = 'module';
 24: 
 25:     /** @var string */
 26:     private $module = '';
 27: 
 28:     /** @var array */
 29:     private $defaults;
 30: 
 31:     /** @var int */
 32:     private $flags;
 33: 
 34: 
 35:     /**
 36:      * @param  array   default values
 37:      * @param  int     flags
 38:      */
 39:     public function __construct($defaults = array(), $flags = 0)
 40:     {
 41:         if (is_string($defaults)) {
 42:             $a = strrpos($defaults, ':');
 43:             if (!$a) {
 44:                 throw new InvalidArgumentException("Argument must be array or string in format Presenter:action, '$defaults' given.");
 45:             }
 46:             $defaults = array(
 47:                 self::PRESENTER_KEY => substr($defaults, 0, $a),
 48:                 'action' => $a === strlen($defaults) - 1 ? NPresenter::DEFAULT_ACTION : substr($defaults, $a + 1),
 49:             );
 50:         }
 51: 
 52:         if (isset($defaults[self::MODULE_KEY])) {
 53:             $this->module = $defaults[self::MODULE_KEY] . ':';
 54:             unset($defaults[self::MODULE_KEY]);
 55:         }
 56: 
 57:         $this->defaults = $defaults;
 58:         $this->flags = $flags;
 59:     }
 60: 
 61: 
 62:     /**
 63:      * Maps HTTP request to a Request object.
 64:      * @return NPresenterRequest|NULL
 65:      */
 66:     public function match(IHttpRequest $httpRequest)
 67:     {
 68:         if ($httpRequest->getUrl()->getPathInfo() !== '') {
 69:             return NULL;
 70:         }
 71:         // combine with precedence: get, (post,) defaults
 72:         $params = $httpRequest->getQuery();
 73:         $params += $this->defaults;
 74: 
 75:         if (!isset($params[self::PRESENTER_KEY]) || !is_string($params[self::PRESENTER_KEY])) {
 76:             return NULL;
 77:         }
 78: 
 79:         $presenter = $this->module . $params[self::PRESENTER_KEY];
 80:         unset($params[self::PRESENTER_KEY]);
 81: 
 82:         return new NPresenterRequest(
 83:             $presenter,
 84:             $httpRequest->getMethod(),
 85:             $params,
 86:             $httpRequest->getPost(),
 87:             $httpRequest->getFiles(),
 88:             array(NPresenterRequest::SECURED => $httpRequest->isSecured())
 89:         );
 90:     }
 91: 
 92: 
 93:     /**
 94:      * Constructs absolute URL from Request object.
 95:      * @return string|NULL
 96:      */
 97:     public function constructUrl(NPresenterRequest $appRequest, NUrl $refUrl)
 98:     {
 99:         if ($this->flags & self::ONE_WAY) {
100:             return NULL;
101:         }
102:         $params = $appRequest->getParameters();
103: 
104:         // presenter name
105:         $presenter = $appRequest->getPresenterName();
106:         if (strncasecmp($presenter, $this->module, strlen($this->module)) === 0) {
107:             $params[self::PRESENTER_KEY] = substr($presenter, strlen($this->module));
108:         } else {
109:             return NULL;
110:         }
111: 
112:         // remove default values; NULL values are retain
113:         foreach ($this->defaults as $key => $value) {
114:             if (isset($params[$key]) && $params[$key] == $value) { // intentionally ==
115:                 unset($params[$key]);
116:             }
117:         }
118: 
119:         $url = ($this->flags & self::SECURED ? 'https://' : 'http://') . $refUrl->getAuthority() . $refUrl->getPath();
120:         $sep = ini_get('arg_separator.input');
121:         $query = http_build_query($params, '', $sep ? $sep[0] : '&');
122:         if ($query != '') { // intentionally ==
123:             $url .= '?' . $query;
124:         }
125:         return $url;
126:     }
127: 
128: 
129:     /**
130:      * Returns default values.
131:      * @return array
132:      */
133:     public function getDefaults()
134:     {
135:         return $this->defaults;
136:     }
137: 
138: 
139:     /**
140:      * Returns flags.
141:      * @return int
142:      */
143:     public function getFlags()
144:     {
145:         return $this->flags;
146:     }
147: 
148: }
149: