mcs/class/Microsoft.Build.Tasks/Microsoft.Build.Tasks/Utilities.cs

   1 //
   2 // Utilities.cs:
   3 //
   4 // Author:
   5 //      Ankit Jain (jankit@novell.com)
   6 //
   7 // Copyright (c) 2009 Novell, Inc (http://www.novell.com)
   8 //
   9 // Permission is hereby granted, free of charge, to any person obtaining
  10 // a copy of this software and associated documentation files (the
  11 // "Software"), to deal in the Software without restriction, including
  12 // without limitation the rights to use, copy, modify, merge, publish,
  13 // distribute, sublicense, and/or sell copies of the Software, and to
  14 // permit persons to whom the Software is furnished to do so, subject to
  15 // the following conditions:
  16 //
  17 // The above copyright notice and this permission notice shall be
  18 // included in all copies or substantial portions of the Software.
  19 //
  20 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  21 // EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  22 // MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  23 // NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
  24 // LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
  25 // OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
  26 // WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  27
  28 #if NET_2_0
  29
  30 using System;
  31 using System.IO;
  32 using System.Runtime.InteropServices;
  33
  34 namespace Microsoft.Build.Tasks {
  35         internal static class Utilities {
  36
  37                 public readonly static bool RunningOnMac;
  38                 public readonly static bool RunningOnWindows;
  39
  40                 static Utilities ()
  41                 {
  42                         RunningOnWindows = Path.DirectorySeparatorChar == '\\';
  43                         RunningOnMac = !RunningOnWindows && IsRunningOnMac ();
  44                 }
  45
  46                 [DllImport ("libc")]
  47                 static extern int uname (IntPtr buf);
  48
  49                 //From Managed.Windows.Forms/XplatUI
  50                 static bool IsRunningOnMac ()
  51                 {
  52                         IntPtr buf = IntPtr.Zero;
  53                         try {
  54                                 buf = System.Runtime.InteropServices.Marshal.AllocHGlobal (8192);
  55                                 // This is a hacktastic way of getting sysname from uname ()
  56                                 if (uname (buf) == 0) {
  57                                         string os = System.Runtime.InteropServices.Marshal.PtrToStringAnsi (buf);
  58                                         if (os == "Darwin")
  59                                                 return true;
  60                                 }
  61                         } catch {
  62                         } finally {
  63                                 if (buf != IntPtr.Zero)
  64                                         System.Runtime.InteropServices.Marshal.FreeHGlobal (buf);
  65                         }
  66                         return false;
  67                 }
  68
  69                 internal static string FromMSBuildPath (string relPath)
  70                 {
  71                         if (relPath == null || relPath.Length == 0)
  72                                 return null;
  73
  74                         bool is_windows = Path.DirectorySeparatorChar == '\\';
  75                         string path = relPath;
  76                         if (!is_windows)
  77                                 path = path.Replace ("\\", "/");
  78
  79                         // a path with drive letter is invalid/unusable on non-windows
  80                         if (!is_windows && char.IsLetter (path [0]) && path.Length > 1 && path[1] == ':')
  81                                 return null;
  82
  83                         if (System.IO.File.Exists (path)){
  84                                 return Path.GetFullPath (path);
  85                         }
  86
  87                         if (Path.IsPathRooted (path)) {
  88
  89                                 // Windows paths are case-insensitive. When mapping an absolute path
  90                                 // we can try to find the correct case for the path.
  91
  92                                 string[] names = path.Substring (1).Split ('/');
  93                                 string part = "/";
  94
  95                                 for (int n=0; n<names.Length; n++) {
  96                                         string[] entries;
  97
  98                                         if (names [n] == ".."){
  99                                                 if (part == "/")
 100                                                         return ""; // Can go further back. It's not an existing file
 101                                                 part = Path.GetFullPath (part + "/..");
 102                                                 continue;
 103                                         }
 104
 105                                         entries = Directory.GetFileSystemEntries (part);
 106
 107                                         string fpath = null;
 108                                         foreach (string e in entries) {
 109                                                 if (string.Compare (Path.GetFileName (e), names[n], true) == 0) {
 110                                                         fpath = e;
 111                                                         break;
 112                                                 }
 113                                         }
 114                                         if (fpath == null) {
 115                                                 // Part of the path does not exist. Can't do any more checking.
 116                                                 part = Path.GetFullPath (part);
 117                                                 for (; n < names.Length; n++)
 118                                                         part += "/" + names[n];
 119                                                 return part;
 120                                         }
 121
 122                                         part = fpath;
 123                                 }
 124                                 return Path.GetFullPath (part);
 125                         } else {
 126                                 return Path.GetFullPath (path);
 127                         }
 128                 }
 129
 130         }
 131
 132 }
 133
 134 #endif