mcs/class/Microsoft.Build.Utilities/Mono.XBuild.Utilities/ReservedNameUtils.cs

   1 //
   2 // ReservedNameUtils.cs
   3 //
   4 // Author:
   5 //   Marek Sieradzki (marek.sieradzki@gmail.com)
   6 //
   7 // (C) 2006 Marek Sieradzki
   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 using System;
  29 using System.Collections;
  30 using System.Collections.Specialized;
  31 using System.IO;
  32 using System.Text;
  33
  34 namespace Mono.XBuild.Utilities {
  35
  36         internal static class ReservedNameUtils {
  37
  38                 static string[] reservedMetadataNames;
  39                 static Hashtable reservedMetadataHash;
  40
  41                 static ReservedNameUtils ()
  42                 {
  43                         reservedMetadataNames = new string [] {
  44                                 "FullPath", "RootDir", "Filename", "Extension", "RelativeDir", "Directory",
  45                                 "RecursiveDir", "Identity", "ModifiedTime", "CreatedTime", "AccessedTime"};
  46                         reservedMetadataHash = CollectionsUtil.CreateCaseInsensitiveHashtable (ReservedMetadataNameCount);
  47                         foreach (string s in reservedMetadataNames) {
  48                                 reservedMetadataHash.Add (s, null);
  49                         }
  50                 }
  51
  52                 public static ICollection ReservedMetadataNames {
  53                         get {
  54                                 return (ICollection) reservedMetadataNames.Clone ();
  55                         }
  56                 }
  57
  58                 public static int ReservedMetadataNameCount {
  59                         get {
  60                                 return reservedMetadataNames.Length;
  61                         }
  62                 }
  63
  64                 public static bool IsReservedMetadataName (string metadataName)
  65                 {
  66                         return reservedMetadataHash.Contains (metadataName);
  67                 }
  68
  69                 public static string GetReservedMetadata (string itemSpec,
  70                                                    string metadataName, IDictionary metadata)
  71                 {
  72                         if (metadataName == null)
  73                                 throw new ArgumentNullException ();
  74
  75                         if (String.IsNullOrEmpty (itemSpec))
  76                                 return String.Empty;
  77
  78                         switch (metadataName.ToLowerInvariant ()) {
  79                         case "fullpath":
  80                                 return Path.GetFullPath (itemSpec);
  81                         case "rootdir":
  82                                 if (Path.IsPathRooted (itemSpec))
  83                                         return Path.GetPathRoot (itemSpec);
  84                                 else
  85                                         return Path.GetPathRoot (Environment.CurrentDirectory);
  86                         case "filename":
  87                                 return Path.GetFileNameWithoutExtension (itemSpec);
  88                         case "extension":
  89                                 return Path.GetExtension (itemSpec);
  90                         case "relativedir":
  91                                 return WithTrailingSlash (AbsoluteToRelativePath (Environment.CurrentDirectory, Path.GetDirectoryName (itemSpec)));
  92                         case "directory":
  93                                 string fullpath = Path.GetFullPath (itemSpec);
  94                                 return WithTrailingSlash (
  95                                          Path.GetDirectoryName (fullpath).Substring (Path.GetPathRoot (fullpath).Length));
  96                         case "recursivedir":
  97                                 if (metadata != null && metadata.Contains ("RecursiveDir"))
  98                                         return (string)metadata ["RecursiveDir"];
  99                                 else
 100                                         return String.Empty;
 101                         case "identity":
 102                                 return Path.Combine (Path.GetDirectoryName (itemSpec), Path.GetFileName (itemSpec));
 103                         case "modifiedtime":
 104                                 if (File.Exists (itemSpec))
 105                                         return File.GetLastWriteTime (itemSpec).ToString ();
 106                                 else if (Directory.Exists (itemSpec))
 107                                         return Directory.GetLastWriteTime (itemSpec).ToString ();
 108                                 else
 109                                         return String.Empty;
 110                         case "createdtime":
 111                                 if (File.Exists (itemSpec))
 112                                         return File.GetCreationTime (itemSpec).ToString ();
 113                                 else if (Directory.Exists (itemSpec))
 114                                         return Directory.GetCreationTime (itemSpec).ToString ();
 115                                 else
 116                                         return String.Empty;
 117                         case "accessedtime":
 118                                 if (File.Exists (itemSpec))
 119                                         return File.GetLastAccessTime (itemSpec).ToString ();
 120                                 else if (Directory.Exists (itemSpec))
 121                                         return Directory.GetLastAccessTime (itemSpec).ToString ();
 122                                 else
 123                                         return String.Empty;
 124                         default:
 125                                 throw new ArgumentException ("Invalid reserved metadata name");
 126                         }
 127                 }
 128
 129                 static string WithTrailingSlash (string path)
 130                 {
 131                         if (String.IsNullOrEmpty (path))
 132                                 return String.Empty;
 133
 134                         if (path.Length > 0)
 135                                 return path + Path.DirectorySeparatorChar;
 136                         else
 137                                 return path;
 138                 }
 139
 140                 readonly static char[] separators = { Path.DirectorySeparatorChar, Path.VolumeSeparatorChar, Path.AltDirectorySeparatorChar };
 141                 static string AbsoluteToRelativePath (string baseDirectoryPath, string absPath)
 142                 {
 143                         if (!Path.IsPathRooted (absPath))
 144                                 return absPath;
 145
 146                         absPath           = Path.GetFullPath (absPath);
 147                         baseDirectoryPath = Path.GetFullPath (baseDirectoryPath.TrimEnd (Path.DirectorySeparatorChar));
 148
 149                         string[] bPath = baseDirectoryPath.Split (separators);
 150                         string[] aPath = absPath.Split (separators);
 151                         int indx = 0;
 152
 153                         for (; indx < System.Math.Min (bPath.Length, aPath.Length); indx++) {
 154                                 if (!bPath[indx].Equals(aPath[indx]))
 155                                         break;
 156                         }
 157
 158                         if (indx == 0)
 159                                 return absPath;
 160
 161                         StringBuilder result = new StringBuilder ();
 162
 163                         for (int i = indx; i < bPath.Length; i++) {
 164                                 result.Append ("..");
 165                                 if (i + 1 < bPath.Length || aPath.Length - indx > 0)
 166                                         result.Append (Path.DirectorySeparatorChar);
 167                         }
 168
 169
 170                         result.Append (String.Join(Path.DirectorySeparatorChar.ToString(), aPath, indx, aPath.Length - indx));
 171                         if (result.Length == 0)
 172                                 return ".";
 173                         return result.ToString ();
 174                 }
 175
 176                 static string RelativeToAbsolutePath (string baseDirectoryPath, string relPath)
 177                 {
 178                         return Path.GetFullPath (Path.Combine (baseDirectoryPath, relPath));
 179                 }
 180         }
 181 }