mcs/class/System.Web/System.Web/VirtualPath.cs

   1 //
   2 // System.Web.VirtualPath.cs
   3 //
   4 // Authors:
   5 //   Marek Habersack (mhabersack@novell.com)
   6 //
   7 // (C) 2008 Novell, Inc
   8 //
   9
  10 //
  11 // Permission is hereby granted, free of charge, to any person obtaining
  12 // a copy of this software and associated documentation files (the
  13 // "Software"), to deal in the Software without restriction, including
  14 // without limitation the rights to use, copy, modify, merge, publish,
  15 // distribute, sublicense, and/or sell copies of the Software, and to
  16 // permit persons to whom the Software is furnished to do so, subject to
  17 // the following conditions:
  18 //
  19 // The above copyright notice and this permission notice shall be
  20 // included in all copies or substantial portions of the Software.
  21 //
  22 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  23 // EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  24 // MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  25 // NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
  26 // LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
  27 // OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
  28 // WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  29 //
  30 #if NET_2_0
  31 using System.Web.Util;
  32
  33 namespace System.Web
  34 {
  35         internal class VirtualPath : IDisposable
  36         {
  37                 string _absolute;
  38                 string _appRelative;
  39                 string _appRelativeNotRooted;
  40                 string _extension;
  41                 string _directory;
  42                 string _currentRequestDirectory;
  43                 string _physicalPath;
  44
  45                 public bool IsAbsolute {
  46                         get;
  47                         private set;
  48                 }
  49
  50                 public bool IsRooted {
  51                         get;
  52                         private set;
  53                 }
  54
  55                 public bool IsAppRelative {
  56                         get;
  57                         private set;
  58                 }
  59
  60                 public string Original {
  61                         get;
  62                         private set;
  63                 }
  64
  65                 public string Absolute {
  66                         get {
  67                                 if (IsAbsolute)
  68                                         return Original;
  69
  70                                 if (_absolute == null) {
  71                                         string original = Original;
  72
  73                                         if (!VirtualPathUtility.IsRooted (original))
  74                                                 _absolute = MakeRooted (original);
  75                                         else
  76                                                 _absolute = original;
  77
  78                                         if (VirtualPathUtility.IsAppRelative (_absolute))
  79                                                 _absolute = VirtualPathUtility.ToAbsolute (_absolute);
  80                                 }
  81
  82                                 return _absolute;
  83                         }
  84                 }
  85
  86                 public string AppRelative {
  87                         get {
  88                                 if (IsAppRelative)
  89                                         return Original;
  90
  91                                 if (_appRelative == null) {
  92                                         string original = Original;
  93
  94                                         if (!VirtualPathUtility.IsRooted (original))
  95                                                 _appRelative = MakeRooted (original);
  96                                         else
  97                                                 _appRelative = original;
  98
  99                                         if (VirtualPathUtility.IsAbsolute (_appRelative))
 100                                                 _appRelative = VirtualPathUtility.ToAppRelative (_appRelative);
 101                                 }
 102
 103                                 return _appRelative;
 104                         }
 105                 }
 106
 107                 public string AppRelativeNotRooted {
 108                         get {
 109                                 if (_appRelativeNotRooted == null)
 110                                         _appRelativeNotRooted = AppRelative.Substring (2);
 111
 112                                 return _appRelativeNotRooted;
 113                         }
 114                 }
 115
 116                 public string Extension {
 117                         get {
 118                                 if (_extension == null)
 119                                         _extension = VirtualPathUtility.GetExtension (Original);
 120
 121                                 return _extension;
 122                         }
 123                 }
 124
 125                 public string Directory {
 126                         get {
 127                                 if (_directory == null)
 128                                         _directory = VirtualPathUtility.GetDirectory (Absolute);
 129
 130                                 return _directory;
 131                         }
 132                 }
 133
 134                 public string CurrentRequestDirectory {
 135                         get {
 136                                 if (_currentRequestDirectory != null)
 137                                         return _currentRequestDirectory;
 138
 139                                 HttpContext ctx = HttpContext.Current;
 140                                 HttpRequest req = ctx != null ? ctx.Request : null;
 141                                 if (req != null)
 142                                         return VirtualPathUtility.GetDirectory (req.CurrentExecutionFilePath);
 143
 144                                 return null;
 145                         }
 146
 147                         set { _currentRequestDirectory = value; }
 148                 }
 149
 150                 public string PhysicalPath {
 151                         get {
 152                                 if (_physicalPath != null)
 153                                         return _physicalPath;
 154
 155                                 HttpContext ctx = HttpContext.Current;
 156                                 HttpRequest req = ctx != null ? ctx.Request : null;
 157                                 if (req != null)
 158                                         _physicalPath = req.MapPath (Absolute);
 159                                 else
 160                                         return null;
 161
 162                                 return _physicalPath;
 163                         }
 164                 }
 165
 166                 public VirtualPath (string vpath)
 167                 {
 168                         Original = vpath;
 169
 170                         IsRooted = VirtualPathUtility.IsRooted (vpath);
 171                         IsAbsolute = VirtualPathUtility.IsAbsolute (vpath);
 172                         IsAppRelative = VirtualPathUtility.IsAppRelative (vpath);
 173                 }
 174
 175                 public VirtualPath (string vpath, string baseVirtualDir)
 176                         : this (vpath)
 177                 {
 178                         CurrentRequestDirectory = baseVirtualDir;
 179                 }
 180
 181                 public bool StartsWith (string s)
 182                 {
 183                         return StrUtils.StartsWith (Original, s);
 184                 }
 185
 186                 // Assumes 'original' is NOT rooted
 187                 string MakeRooted (string original)
 188                 {
 189                         string reqdir = CurrentRequestDirectory;
 190
 191                         if (!String.IsNullOrEmpty (reqdir))
 192                                 return VirtualPathUtility.Combine (reqdir, original);
 193                         else
 194                                 return VirtualPathUtility.Combine (HttpRuntime.AppDomainAppVirtualPath, original);
 195                 }
 196
 197                 public void Dispose ()
 198                 {
 199                         _absolute = null;
 200                         _appRelative = null;
 201                         _appRelativeNotRooted = null;
 202                         _extension = null;
 203                         _directory = null;
 204                 }
 205
 206                 public override string ToString ()
 207                 {
 208                         return Original;
 209                 }
 210
 211                 public static VirtualPath PhysicalToVirtual (string physical_path)
 212                 {
 213                         if (String.IsNullOrEmpty (physical_path))
 214                                 return null;
 215
 216                         string appPhysicalPath = HttpRuntime.AppDomainAppPath;
 217                         if (!StrUtils.StartsWith (physical_path, appPhysicalPath))
 218                                 return null;
 219
 220                         string vp = physical_path.Substring (appPhysicalPath.Length - 1);
 221                         if (vp [0] != '/')
 222                                 return null;
 223
 224                         return new VirtualPath (vp);
 225                 }
 226         }
 227 }
 228 #endif