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 \r
  13 using System;\r
  14 \r
  15 namespace System.IO {\r
  16 \r
  17         [Serializable]
  18         public sealed class FileInfo : FileSystemInfo {\r
  19         \r
  20
  21                 private bool exists = false;
  22
  23                 public FileInfo (string path) {\r
  24                         CheckPath (path);\r
  25                 \r
  26                         OriginalPath = path;\r
  27                         FullPath = Path.GetFullPath (path);
  28                         exists = File.Exists (path);
  29                 }\r
  30 \r
  31                 // public properties\r
  32 \r
  33                 public override bool Exists {\r
  34                         get {\r
  35                                 Refresh (false);\r
  36 \r
  37                                 if (stat.Attributes == MonoIO.InvalidFileAttributes)\r
  38                                         return false;\r
  39 \r
  40                                 if ((stat.Attributes & FileAttributes.Directory) != 0)\r
  41                                         return false;\r
  42 \r
  43                                 return exists;
  44                         }\r
  45                 }\r
  46 \r
  47                 public override string Name {\r
  48                         get {\r
  49                                 return Path.GetFileName (FullPath);\r
  50                         }\r
  51                 }\r
  52 \r
  53                 public long Length {\r
  54                         get {\r
  55                                 if (!Exists)\r
  56                                         throw new FileNotFoundException ("Could not find file \"" + OriginalPath + "\".");\r
  57 \r
  58                                 return stat.Length;\r
  59                         }\r
  60                 }\r
  61 \r
  62                 public string DirectoryName {\r
  63                         get {\r
  64                                 return Path.GetDirectoryName (FullPath);\r
  65                         }\r
  66                 }\r
  67 \r
  68                 public DirectoryInfo Directory {\r
  69                         get {\r
  70                                 return new DirectoryInfo (DirectoryName);\r
  71                         }\r
  72                 }\r
  73 \r
  74                 // streamreader methods\r
  75 \r
  76                 public StreamReader OpenText () {\r
  77                         return new StreamReader (Open (FileMode.Open, FileAccess.Read));\r
  78                 }\r
  79 \r
  80                 public StreamWriter CreateText () {\r
  81                         return new StreamWriter (Open (FileMode.Create, FileAccess.Write));\r
  82                 }\r
  83                 \r
  84                 public StreamWriter AppendText () {\r
  85                         return new StreamWriter (Open (FileMode.Append, FileAccess.Write));\r
  86                 }\r
  87 \r
  88                 // filestream methods\r
  89
  90                 public FileStream Create ()
  91                 {
  92                         return File.Create (FullPath);
  93                 }
  94
  95                 \r
  96                 public FileStream OpenRead () {\r
  97                         return Open (FileMode.Open, FileAccess.Read);\r
  98                 }\r
  99 \r
 100                 public FileStream OpenWrite () {\r
 101                         return Open (FileMode.OpenOrCreate, FileAccess.Write);\r
 102                 }\r
 103 \r
 104                 public FileStream Open (FileMode mode) {\r
 105                         return Open (mode, FileAccess.ReadWrite);\r
 106                 }\r
 107 \r
 108                 public FileStream Open (FileMode mode, FileAccess access) {\r
 109                         return Open (mode, access, FileShare.None);\r
 110                 }\r
 111 \r
 112                 public FileStream Open (FileMode mode, FileAccess access, FileShare share) {\r
 113                         return new FileStream (FullPath, mode, access, share);\r
 114                 }\r
 115 \r
 116                 // file methods\r
 117
 118                 public override void Delete () {
 119                         MonoIOError error;
 120
 121                         if (!MonoIO.Exists (FullPath, out error)) {
 122                                 // a weird MS.NET behaviour
 123                                 return;
 124                         }
 125
 126                         if (MonoIO.ExistsDirectory (FullPath, out error)) {
 127                                 throw new UnauthorizedAccessException ("Access to the path \"" + FullPath + "\" is denied.");
 128                         }
 129
 130                         if (!MonoIO.DeleteFile (FullPath, out error)) {
 131                                 throw MonoIO.GetException (OriginalPath,
 132                                                            error);
 133                         }
 134                 }
 135
 136                 public void MoveTo (string dest) {
 137                         if (dest == null)
 138                                 throw new ArgumentNullException ();
 139                         MonoIOError error;
 140                         if (MonoIO.Exists (dest, out error) ||
 141                                 MonoIO.ExistsDirectory (dest, out error))
 142                                 throw new IOException ();
 143                         File.Move (FullPath, dest);
 144                 }
 145
 146                 public FileInfo CopyTo (string path) {\r
 147                         return CopyTo (path, false);\r
 148                 }\r
 149 \r
 150                 public FileInfo CopyTo (string path, bool overwrite) {\r
 151                         string dest = Path.GetFullPath (path);\r
 152
 153                         if (overwrite && File.Exists (path))
 154                                 File.Delete (path);
 155
 156                         File.Copy (FullPath, dest);\r
 157                 \r
 158                         return new FileInfo (dest);\r
 159                 }\r
 160 \r
 161                 public override string ToString () {\r
 162                         return OriginalPath;\r
 163                 }\r
 164         }\r
 165 }\r