Chris@0: <?php
Chris@0: /**
Chris@0:  * Zend Framework (http://framework.zend.com/)
Chris@0:  *
Chris@0:  * @link      http://github.com/zendframework/zf2 for the canonical source repository
Chris@0:  * @copyright Copyright (c) 2005-2015 Zend Technologies USA Inc. (http://www.zend.com)
Chris@0:  * @license   http://framework.zend.com/license/new-bsd New BSD License
Chris@0:  */
Chris@0: 
Chris@0: namespace Zend\Feed;
Chris@0: 
Chris@0: class Uri
Chris@0: {
Chris@0:     /**
Chris@0:      * @var string
Chris@0:      */
Chris@0:     protected $fragment;
Chris@0: 
Chris@0:     /**
Chris@0:      * @var string
Chris@0:      */
Chris@0:     protected $host;
Chris@0: 
Chris@0:     /**
Chris@0:      * @var string
Chris@0:      */
Chris@0:     protected $pass;
Chris@0: 
Chris@0:     /**
Chris@0:      * @var string
Chris@0:      */
Chris@0:     protected $path;
Chris@0: 
Chris@0:     /**
Chris@0:      * @var int
Chris@0:      */
Chris@0:     protected $port;
Chris@0: 
Chris@0:     /**
Chris@0:      * @var string
Chris@0:      */
Chris@0:     protected $query;
Chris@0: 
Chris@0:     /**
Chris@0:      * @var string
Chris@0:      */
Chris@0:     protected $scheme;
Chris@0: 
Chris@0:     /**
Chris@0:      * @var string
Chris@0:      */
Chris@0:     protected $user;
Chris@0: 
Chris@0:     /**
Chris@0:      * @var bool
Chris@0:      */
Chris@0:     protected $valid;
Chris@0: 
Chris@0:     /**
Chris@0:      * Valid schemes
Chris@0:      */
Chris@0:     protected $validSchemes = [
Chris@0:         'http',
Chris@0:         'https',
Chris@0:         'file',
Chris@0:     ];
Chris@0: 
Chris@0:     /**
Chris@0:      * @param  string $uri
Chris@0:      */
Chris@0:     public function __construct($uri)
Chris@0:     {
Chris@0:         $parsed = parse_url($uri);
Chris@0:         if (false === $parsed) {
Chris@0:             $this->valid = false;
Chris@0:             return;
Chris@0:         }
Chris@0: 
Chris@12:         $this->scheme   = isset($parsed['scheme']) ? $parsed['scheme'] : null;
Chris@12:         $this->host     = isset($parsed['host']) ? $parsed['host'] : null;
Chris@12:         $this->port     = isset($parsed['port']) ? $parsed['port'] : null;
Chris@12:         $this->user     = isset($parsed['user']) ? $parsed['user'] : null;
Chris@12:         $this->pass     = isset($parsed['pass']) ? $parsed['pass'] : null;
Chris@12:         $this->path     = isset($parsed['path']) ? $parsed['path'] : null;
Chris@12:         $this->query    = isset($parsed['query']) ? $parsed['query'] : null;
Chris@0:         $this->fragment = isset($parsed['fragment']) ? $parsed['fragment'] : null;
Chris@0:     }
Chris@0: 
Chris@0:     /**
Chris@0:      * Create an instance
Chris@0:      *
Chris@0:      * Useful for chained validations
Chris@0:      *
Chris@0:      * @param  string $uri
Chris@0:      * @return self
Chris@0:      */
Chris@0:     public static function factory($uri)
Chris@0:     {
Chris@0:         return new static($uri);
Chris@0:     }
Chris@0: 
Chris@0:     /**
Chris@0:      * Retrieve the host
Chris@0:      *
Chris@0:      * @return string
Chris@0:      */
Chris@0:     public function getHost()
Chris@0:     {
Chris@0:         return $this->host;
Chris@0:     }
Chris@0: 
Chris@0:     /**
Chris@0:      * Retrieve the URI path
Chris@0:      *
Chris@0:      * @return string
Chris@0:      */
Chris@0:     public function getPath()
Chris@0:     {
Chris@0:         return $this->path;
Chris@0:     }
Chris@0: 
Chris@0:     /**
Chris@0:      * Retrieve the scheme
Chris@0:      *
Chris@0:      * @return string
Chris@0:      */
Chris@0:     public function getScheme()
Chris@0:     {
Chris@0:         return $this->scheme;
Chris@0:     }
Chris@0: 
Chris@0:     /**
Chris@0:      * Is the URI valid?
Chris@0:      *
Chris@0:      * @return bool
Chris@0:      */
Chris@0:     public function isValid()
Chris@0:     {
Chris@0:         if (false === $this->valid) {
Chris@0:             return false;
Chris@0:         }
Chris@0: 
Chris@12:         if ($this->scheme && ! in_array($this->scheme, $this->validSchemes)) {
Chris@0:             return false;
Chris@0:         }
Chris@0: 
Chris@0:         if ($this->host) {
Chris@17:             if ($this->path && 0 !== strpos($this->path, '/')) {
Chris@0:                 return false;
Chris@0:             }
Chris@0:             return true;
Chris@0:         }
Chris@0: 
Chris@0:         // no host, but user and/or port... what?
Chris@0:         if ($this->user || $this->port) {
Chris@0:             return false;
Chris@0:         }
Chris@0: 
Chris@0:         if ($this->path) {
Chris@0:             // Check path-only (no host) URI
Chris@17:             if (0 === strpos($this->path, '//')) {
Chris@0:                 return false;
Chris@0:             }
Chris@0:             return true;
Chris@0:         }
Chris@0: 
Chris@0:         if (! ($this->query || $this->fragment)) {
Chris@0:             // No host, path, query or fragment - this is not a valid URI
Chris@0:             return false;
Chris@0:         }
Chris@0: 
Chris@0:         return true;
Chris@0:     }
Chris@0: 
Chris@0:     /**
Chris@0:      * Is the URI absolute?
Chris@0:      *
Chris@0:      * @return bool
Chris@0:      */
Chris@0:     public function isAbsolute()
Chris@0:     {
Chris@0:         return ($this->scheme !== null);
Chris@0:     }
Chris@0: }