# Url.class.php

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    00001 <?php
    00002 /***************************************************************************
    00003  *   Copyright (C) 2007 by Ivan Y. Khvostishkov                            *
    00004  *                                                                         *
    00005  *   This program is free software; you can redistribute it and/or modify  *
    00006  *   it under the terms of the GNU Lesser General Public License as        *
    00007  *   published by the Free Software Foundation; either version 3 of the    *
    00008  *   License, or (at your option) any later version.                       *
    00009  *                                                                         *
    00010  ***************************************************************************/
    00011
    00018     class Url extends GenericUri
    00019     {
    00020         protected $knownSubSchemes  = array(
    00021             'http'      => 'HttpUrl',
    00022             'https'     => 'HttpUrl',
    00023             'ftp'       => 'Url',
    00024             'nntp'      => 'Url',
    00025             'telnet'    => 'Url',
    00026             'gopher'    => 'Url',
    00027             'wais'      => 'Url',
    00028             'file'      => 'Url',
    00029             'prospero'  => 'Url'
    00030         );
    00031
    00035         public static function create()
    00036         {
    00037             return new self;
    00038         }
    00039
    00040         public function getKnownSubSchemes()
    00041         {
    00042             return $this->knownSubSchemes;
    00043         }
    00044
    00045         public function isValid()
    00046         {
    00047             if (!parent::isValid())
    00048                 return false;
    00049
    00050             return
    00051                 ($this->isAbsolute() && $this->getAuthority() !== null)
    00052                 || ($this->isRelative() && $this->getAuthority() === null);
    00053         }
    00054
    00060         public function fixAuthorityFromPath()
    00061         {
    00062             if ($this->scheme && !$this->getAuthority()) {
    00063                 $segments = explode('/', $this->path);
    00064
    00065                 while ($segments && empty($segments[0]))
    00066                     array_shift($segments);
    00067
    00068                 if ($segments) {
    00069                     $this->setAuthority(array_shift($segments));
    00070                     $this->setPath('/'.implode('/', $segments));
    00071                 }
    00072             }
    00073
    00074             return $this;
    00075         }
    00076
    00080         public function fixMistakenPath()
    00081         {
    00082             if ($this->scheme || $this->getAuthority())
    00083                 return $this;
    00084
    00085             $urlSubSchemes = Url::create()->getKnownSubSchemes();
    00086
    00087             $matches = array();
    00088
    00089             if (
    00090                 !preg_match('/^([a-z][a-z0-9.+-]*):(.*)/i', $this->path, $matches)
    00091                 || !isset($urlSubSchemes[strtolower($matches[1])])
    00092             ) {
    00093                 // localhost:80 not a scheme+authority
    00094                 return $this;
    00095             }
    00096
    00097             // but http:anything:80/... and http:/anything:80/.. becomes
    00098             // http://anything:80/...
    00099
    00100             $this->setScheme($matches[1]);
    00101             $this->setPath($matches[2]);
    00102
    00103             $this->fixAuthorityFromPath();
    00104
    00105             return $this;
    00106         }
    00107
    00108         public function toSmallString()
    00109         {
    00110             $result = null;
    00111
    00112             $authority = $this->getAuthority();
    00113
    00114             if ($authority !== null)
    00115                 $result .= $authority;
    00116
    00117             $result .= $this->path;
    00118
    00119             if ($this->query !== null)
    00120                 $result .= '?'.$this->query;
    00121
    00122             if ($this->fragment !== null)
    00123                 $result .= '#'.$this->fragment;
    00124
    00125             return $result;
    00126         }
    00127
    00128         public function normalize()
    00129         {
    00130             parent::normalize();
    00131
    00132             if ($this->getPort() === '')
    00133                 $this->setPort(null);
    00134
    00135             return $this;
    00136         }
    00137     }
    00138 ?>