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