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