mcs/class/corlib/System.IO/FileInfo.cs

   1 //------------------------------------------------------------------------------\r
   2 // \r
   3 // System.IO.FileInfo.cs \r
   4 //\r
   5 // Copyright (C) 2001 Moonlight Enterprises, All Rights Reserved\r
   6 // \r
   7 // Author:         Jim Richardson, develop@wtfo-guru.com\r
   8 //                 Dan Lewis (dihlewis@yahoo.co.uk)\r
   9 // Created:        Monday, August 13, 2001 \r
  10 //\r
  11 //------------------------------------------------------------------------------\r
  12
  13 //
  14 // Copyright (C) 2004 Novell, Inc (http://www.novell.com)
  15 //
  16 // Permission is hereby granted, free of charge, to any person obtaining
  17 // a copy of this software and associated documentation files (the
  18 // "Software"), to deal in the Software without restriction, including
  19 // without limitation the rights to use, copy, modify, merge, publish,
  20 // distribute, sublicense, and/or sell copies of the Software, and to
  21 // permit persons to whom the Software is furnished to do so, subject to
  22 // the following conditions:
  23 //
  24 // The above copyright notice and this permission notice shall be
  25 // included in all copies or substantial portions of the Software.
  26 //
  27 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  28 // EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  29 // MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  30 // NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
  31 // LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
  32 // OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
  33 // WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  34 //
  35 \r
  36 using System;\r
  37 \r
  38 namespace System.IO {\r
  39 \r
  40         [Serializable]\r
  41         public sealed class FileInfo : FileSystemInfo {\r
  42         \r
  43 \r
  44                 private bool exists;\r
  45 \r
  46                 public FileInfo (string path) {\r
  47                         CheckPath (path);\r
  48                 \r
  49                         OriginalPath = path;\r
  50                         FullPath = Path.GetFullPath (path);\r
  51                 }\r
  52                 \r
  53                 internal override void InternalRefresh ()\r
  54                 {\r
  55                         exists = File.Exists (FullPath);\r
  56                 }\r
  57 \r
  58 \r
  59                 // public properties\r
  60 \r
  61                 public override bool Exists {\r
  62                         get {\r
  63                                 Refresh (false);\r
  64 \r
  65                                 if (stat.Attributes == MonoIO.InvalidFileAttributes)\r
  66                                         return false;\r
  67 \r
  68                                 if ((stat.Attributes & FileAttributes.Directory) != 0)\r
  69                                         return false;\r
  70 \r
  71                                 return exists;\r
  72                         }\r
  73                 }\r
  74 \r
  75                 public override string Name {\r
  76                         get {\r
  77                                 return Path.GetFileName (FullPath);\r
  78                         }\r
  79                 }\r
  80 \r
  81                 public long Length {\r
  82                         get {\r
  83                                 if (!Exists)\r
  84                                         throw new FileNotFoundException ("Could not find file \"" + OriginalPath + "\".", OriginalPath);\r
  85 \r
  86                                 return stat.Length;\r
  87                         }\r
  88                 }\r
  89 \r
  90                 public string DirectoryName {\r
  91                         get {\r
  92                                 return Path.GetDirectoryName (FullPath);\r
  93                         }\r
  94                 }\r
  95 \r
  96                 public DirectoryInfo Directory {\r
  97                         get {\r
  98                                 return new DirectoryInfo (DirectoryName);\r
  99                         }\r
 100                 }\r
 101 \r
 102                 // streamreader methods\r
 103 \r
 104                 public StreamReader OpenText () {\r
 105                         return new StreamReader (Open (FileMode.Open, FileAccess.Read));\r
 106                 }\r
 107 \r
 108                 public StreamWriter CreateText () {\r
 109                         return new StreamWriter (Open (FileMode.Create, FileAccess.Write));\r
 110                 }\r
 111                 \r
 112                 public StreamWriter AppendText () {\r
 113                         return new StreamWriter (Open (FileMode.Append, FileAccess.Write));\r
 114                 }\r
 115 \r
 116                 // filestream methods\r
 117 \r
 118                 public FileStream Create ()\r
 119                 {\r
 120                         return File.Create (FullPath);\r
 121                 }\r
 122                 \r
 123                 \r
 124                 public FileStream OpenRead () {\r
 125                         return Open (FileMode.Open, FileAccess.Read);\r
 126                 }\r
 127 \r
 128                 public FileStream OpenWrite () {\r
 129                         return Open (FileMode.OpenOrCreate, FileAccess.Write);\r
 130                 }\r
 131 \r
 132                 public FileStream Open (FileMode mode) {\r
 133                         return Open (mode, FileAccess.ReadWrite);\r
 134                 }\r
 135 \r
 136                 public FileStream Open (FileMode mode, FileAccess access) {\r
 137                         return Open (mode, access, FileShare.None);\r
 138                 }\r
 139 \r
 140                 public FileStream Open (FileMode mode, FileAccess access, FileShare share) {\r
 141                         return new FileStream (FullPath, mode, access, share);\r
 142                 }\r
 143 \r
 144                 // file methods\r
 145 \r
 146                 public override void Delete () {\r
 147                         MonoIOError error;\r
 148                                                 \r
 149                         if (!MonoIO.Exists (FullPath, out error)) {\r
 150                                 // a weird MS.NET behaviour\r
 151                                 return;\r
 152                         }\r
 153 \r
 154                         if (MonoIO.ExistsDirectory (FullPath, out error)) {\r
 155                                 throw new UnauthorizedAccessException ("Access to the path \"" + FullPath + "\" is denied.");\r
 156                         }\r
 157                         \r
 158                         if (!MonoIO.DeleteFile (FullPath, out error)) {\r
 159                                 throw MonoIO.GetException (OriginalPath,\r
 160                                                            error);\r
 161                         }\r
 162                 }\r
 163                 \r
 164                 public void MoveTo (string dest) {\r
 165 \r
 166                         if (dest == null)\r
 167                                 throw new ArgumentNullException ();\r
 168 \r
 169                         if (dest == Name || dest == FullName)\r
 170                                 return;\r
 171 \r
 172                         MonoIOError error;\r
 173                         if (MonoIO.Exists (dest, out error) ||\r
 174                                 MonoIO.ExistsDirectory (dest, out error))\r
 175                                 throw new IOException ();\r
 176                         File.Move (FullPath, dest);\r
 177                         this.FullPath = Path.GetFullPath (dest);\r
 178                 }\r
 179 \r
 180                 public FileInfo CopyTo (string path) {\r
 181                         return CopyTo (path, false);\r
 182                 }\r
 183 \r
 184                 public FileInfo CopyTo (string path, bool overwrite) {\r
 185                         string dest = Path.GetFullPath (path);\r
 186 \r
 187                         if (overwrite && File.Exists (path))\r
 188                                 File.Delete (path);\r
 189 \r
 190                         File.Copy (FullPath, dest);\r
 191                 \r
 192                         return new FileInfo (dest);\r
 193                 }\r
 194 \r
 195                 public override string ToString () {\r
 196                         return OriginalPath;\r
 197                 }\r
 198         }\r
 199 }\r