includes/paths.php

   1 <?php
   2 /*=====================================================================*\
   3 || ################################################################### ||
   4 || # ViewSVN [#]version[#]
   5 || # --------------------------------------------------------------- # ||
   6 || # Copyright ©2002-[#]year[#] by Iris Studios, Inc. All Rights Reserved. # ||
   7 || # This file may not be reproduced in any way without permission.  # ||
   8 || # --------------------------------------------------------------- # ||
   9 || # User License Agreement at http://www.iris-studios.com/license/  # ||
  10 || ################################################################### ||
  11 \*=====================================================================*/
  12
  13 /**
  14 * Handles the various methods that are used to navigate
  15 * browser paths
  16 *
  17 * @package      ViewSVN
  18 */
  19
  20 /**
  21 * Path managing class that constructs and parses input
  22 * and output for paths
  23 *
  24 * @package      ViewSVN
  25 * @version      $Id$
  26 */
  27 class Paths
  28 {
  29         /**
  30         * Path manager type
  31         * @var  integer
  32         */
  33         var $type;
  34
  35         /**
  36         * Constructor: determine the type of linking to use
  37         *
  38         * @param        integer Path management type
  39         */
  40         function Paths($type)
  41         {
  42                 global $viewsvn;
  43
  44                 if ($type < 1 OR $type > 2)
  45                 {
  46                         $viewsvn->trigger->error('invalid path management type');
  47                 }
  48
  49                 $this->type = (int)$type;
  50         }
  51
  52         /**
  53         * Constructs a repository browser link
  54         *
  55         * @access       public
  56         *
  57         * @param        string  Base path
  58         * @param        string  Browser path, separated using '/'
  59         *
  60         * @return       string  Link path
  61         */
  62         function out($base, $addpath)
  63         {
  64                 global $viewsvn;
  65
  66                 $url = $this->fetch_arguments($base);
  67                 $addpath = $this->sanitize($addpath);
  68
  69                 // standard URL type
  70                 if ($this->type == 1)
  71                 {
  72                         return $url[0] . '?path=' . $addpath . ($url[1] ? '&amp;' . $url[1] : '');
  73                 }
  74                 // advanced path system
  75                 else if ($this->type == 2)
  76                 {
  77                         return $url[0] . ($addpath{0} != '/' ? '/' : '') . $addpath . ($url[1] ? '?' . $url[1] : '');
  78                 }
  79         }
  80
  81         /**
  82         * Parses an incoming path with the various methods
  83         * and returns a universal form
  84         *
  85         * @access       public
  86         *
  87         * @return       string  Universal path, separated using '/'
  88         */
  89         function parse()
  90         {
  91                 global $viewsvn;
  92
  93                 // standard URL type
  94                 if ($this->type == 1)
  95                 {
  96                         $path = $viewsvn->in['path'];
  97                 }
  98                 // advanced path system
  99                 else if ($this->type == 2)
 100                 {
 101                         if (@$_SERVER['PATH_INFO'])
 102                         {
 103                                 $path = $viewsvn->sanitize($_SERVER['PATH_INFO']);
 104                         }
 105                         else
 106                         {
 107                                 $viewsvn->trigger->error('server does not support type 2 management');
 108                         }
 109                 }
 110
 111                 if (!$path)
 112                 {
 113                         $viewsvn->trigger->error('invalid path sent');
 114                 }
 115
 116                 if (!$viewsvn->repos->verify($this->fetch_repos($path), $this->fetch_path($path)))
 117                 {
 118                         $viewsvn->trigger->error('invalid path');
 119                 }
 120
 121                 return $path;
 122         }
 123
 124         /**
 125         * Create path breadcrumb
 126         *
 127         * @access       public
 128         *
 129         * @param        string  Universal path
 130         *
 131         * @return       string  Breadcrumb HTML
 132         */
 133         function construct_breadcrumb($path, $doslash)
 134         {
 135                 $html = '/ ';
 136                 $itembit = '/';
 137
 138                 $temp = preg_split('#/#', $path, -1, PREG_SPLIT_NO_EMPTY);
 139                 //krsort($temp);
 140
 141                 foreach ($temp AS $item)
 142                 {
 143                         $itembit .= '/' . $item . '/';
 144                         $html .= '<a href="/viewsvn/' . $this->out('browse.php', $itembit) . '">' . $item . '</a> / ';
 145                 }
 146
 147                 return $html;
 148         }
 149
 150         /**
 151         * Returns the name of the repository from a upath
 152         *
 153         * @access       public
 154         *
 155         * @param        string  Universal path
 156         *
 157         * @return       string  Repository name
 158         */
 159         function fetch_repos($path)
 160         {
 161                 $temp = preg_split('#/#', $path, -1, PREG_SPLIT_NO_EMPTY);
 162                 return $temp[0];
 163         }
 164
 165         /**
 166         * Returns the path without the repository from a upath
 167         *
 168         * @access       public
 169         *
 170         * @param        string  Universal path
 171         * @param        bool    Preceding slash
 172         *
 173         * @return       string  Relative path
 174         */
 175         function fetch_path($path, $doslash = false)
 176         {
 177                 $temp = preg_split('#/#', $path, -1, PREG_SPLIT_NO_EMPTY);
 178                 unset($temp[0]);
 179                 return ($doslash ? '/' : '') . implode('/', $temp);
 180         }
 181
 182         /**
 183         * Fetches any URL parameters a link has
 184         *
 185         * @access       public
 186         *
 187         * @param        string  Original URL
 188         *
 189         * @return       array   Two-element array: base path (no trailing '?'), arguments
 190         */
 191         function fetch_arguments($url)
 192         {
 193                 $return = array();
 194
 195                 if (($pos = strpos($url, '?')) !== false)
 196                 {
 197                         $return[0] = substr($url, 0, strlen($url) - $pos + 1);
 198                         $return[1] = substr($url, $pos + 1);
 199                 }
 200                 else
 201                 {
 202                         $return[0] = $url;
 203                         $return[1] = '';
 204                 }
 205
 206                 return $return;
 207         }
 208
 209         /**
 210         * Determines if the root path has been reached
 211         *
 212         * @access       public
 213         *
 214         * @param        string  Universal path
 215         *
 216         * @return       bool    Root of path?
 217         */
 218         function is_root_path($path)
 219         {
 220                 $path = $this->fetch_path($path);
 221                 $temp = preg_split('#/#', $path, -1, PREG_SPLIT_NO_EMPTY);
 222                 if (count($temp) > 0)
 223                 {
 224                         return false;
 225                 }
 226                 else
 227                 {
 228                         return true;
 229                 }
 230         }
 231
 232         /**
 233         * Sanitizes a path for passing
 234         *
 235         * @access       private
 236         *
 237         * @param        string  Path
 238         *
 239         * @return       string  Cleaned string
 240         */
 241         function sanitize($path)
 242         {
 243                 return preg_replace('#[^a-z0-9\./\-_]*#i', '', $path);
 244         }
 245 }
 246
 247 /*=====================================================================*\
 248 || ###################################################################
 249 || # $HeadURL$
 250 || # $Id$
 251 || ###################################################################
 252 \*=====================================================================*/
 253 ?>