mcs/class/Microsoft.Build.Engine/Microsoft.Build.BuildEngine/DirectoryScanner.cs

   1 //
   2 // DirectoryScanner.cs: Class used by BuildItem.
   3 //
   4 // Author:
   5 //   Marek Sieradzki (marek.sieradzki@gmail.com)
   6 //
   7 // (C) 2005 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 #if NET_2_0
  29
  30 using System;
  31 using System.Collections.Generic;
  32 using System.IO;
  33
  34 using Microsoft.Build.Framework;
  35 using Microsoft.Build.Utilities;
  36
  37 namespace Microsoft.Build.BuildEngine {
  38         internal class DirectoryScanner {
  39
  40                 DirectoryInfo   baseDirectory;
  41                 ITaskItem[]     includes, excludes;
  42                 ITaskItem[]     matchedItems;
  43
  44                 static bool _runningOnWindows;
  45
  46                 static DirectoryScanner ()
  47                 {
  48                         PlatformID pid = Environment.OSVersion.Platform;
  49                         _runningOnWindows =((int) pid != 128 && (int) pid != 4 && (int) pid != 6);
  50                 }
  51
  52                 public DirectoryScanner ()
  53                 {
  54                 }
  55
  56                 public void Scan ()
  57                 {
  58                         Dictionary <string, bool> excludedItems;
  59                         List <ITaskItem> includedItems;
  60
  61                         if (includes == null)
  62                                 throw new ArgumentNullException ("Includes");
  63                         if (baseDirectory == null)
  64                                 throw new ArgumentNullException ("BaseDirectory");
  65
  66                         excludedItems = new Dictionary <string, bool> ();
  67                         includedItems = new List <ITaskItem> ();
  68
  69                         if (excludes != null)
  70                                 foreach (ITaskItem excl in excludes)
  71                                         ProcessExclude (excl.ItemSpec, excludedItems);
  72
  73                         foreach (ITaskItem include_item in includes)
  74                                 ProcessInclude (include_item, excludedItems, includedItems);
  75
  76                         matchedItems = includedItems.ToArray ();
  77                 }
  78
  79                 private void ProcessInclude (ITaskItem include_item, Dictionary <string, bool> excludedItems,
  80                                 List <ITaskItem> includedItems)
  81                 {
  82                         string[] separatedPath;
  83                         FileInfo[] fileInfo;
  84
  85                         string name = include_item.ItemSpec;
  86                         if (name.IndexOf ('?') == -1 && name.IndexOf ('*') == -1) {
  87                                 if (!excludedItems.ContainsKey (Path.GetFullPath(name)))
  88                                         includedItems.Add (include_item);
  89                         } else {
  90                                 if (name.Split (Path.DirectorySeparatorChar).Length > name.Split (Path.AltDirectorySeparatorChar).Length) {
  91                                         separatedPath = name.Split (new char [] {Path.DirectorySeparatorChar},
  92                                                         StringSplitOptions.RemoveEmptyEntries);
  93                                 } else {
  94                                         separatedPath = name.Split (new char [] {Path.AltDirectorySeparatorChar},
  95                                                         StringSplitOptions.RemoveEmptyEntries);
  96                                 }
  97                                 if (separatedPath.Length == 1 && separatedPath [0] == String.Empty)
  98                                         return;
  99
 100                                 int offset = 0;
 101                                 if (Path.IsPathRooted (name)) {
 102                                         baseDirectory = new DirectoryInfo (Path.GetPathRoot (name));
 103                                         if (IsRunningOnWindows)
 104                                                 // skip the "drive:"
 105                                                 offset = 1;
 106                                 }
 107
 108                                 string full_path = Path.GetFullPath (Path.Combine (Environment.CurrentDirectory, include_item.ItemSpec));
 109                                 fileInfo = ParseIncludeExclude (separatedPath, offset, baseDirectory);
 110
 111                                 int wildcard_offset = full_path.IndexOf ("**");
 112                                 foreach (FileInfo fi in fileInfo) {
 113                                         if (!excludedItems.ContainsKey (fi.FullName)) {
 114                                                 TaskItem item = new TaskItem (include_item);
 115                                                 item.ItemSpec = fi.FullName;
 116                                                 if (wildcard_offset >= 0) {
 117                                                         string rec_dir = Path.GetDirectoryName (fi.FullName.Substring (wildcard_offset));
 118                                                         if (rec_dir.Length > 0)
 119                                                                 rec_dir += Path.DirectorySeparatorChar;
 120                                                         item.SetMetadata ("RecursiveDir", rec_dir);
 121                                                 }
 122                                                 includedItems.Add (item);
 123                                         }
 124                                 }
 125                         }
 126                 }
 127
 128                 private void ProcessExclude (string name, Dictionary <string, bool> excludedItems)
 129                 {
 130                         string[] separatedPath;
 131                         FileInfo[] fileInfo;
 132
 133                         if (name.IndexOf ('?') == -1 && name.IndexOf ('*') == -1) {
 134                                 if (!excludedItems.ContainsKey (Path.GetFullPath (name)))
 135                                         excludedItems.Add (Path.GetFullPath (name), true);
 136                         } else {
 137                                 if (name.Split (Path.DirectorySeparatorChar).Length > name.Split (Path.AltDirectorySeparatorChar).Length) {
 138                                         separatedPath = name.Split (new char [] {Path.DirectorySeparatorChar},
 139                                                                         StringSplitOptions.RemoveEmptyEntries);
 140                                 } else {
 141                                         separatedPath = name.Split (new char [] {Path.AltDirectorySeparatorChar},
 142                                                                         StringSplitOptions.RemoveEmptyEntries);
 143                                 }
 144                                 if (separatedPath.Length == 1 && separatedPath [0] == String.Empty)
 145                                         return;
 146
 147                                 int offset = 0;
 148                                 if (Path.IsPathRooted (name)) {
 149                                         baseDirectory = new DirectoryInfo (Path.GetPathRoot (name));
 150                                         if (IsRunningOnWindows)
 151                                                 // skip the "drive:"
 152                                                 offset = 1;
 153                                 }
 154                                 fileInfo = ParseIncludeExclude (separatedPath, offset, baseDirectory);
 155                                 foreach (FileInfo fi in fileInfo)
 156                                         if (!excludedItems.ContainsKey (fi.FullName))
 157                                                 excludedItems.Add (fi.FullName, true);
 158                         }
 159                 }
 160
 161                 private FileInfo[] ParseIncludeExclude (string[] input, int ptr, DirectoryInfo directory)
 162                 {
 163                         if (input.Length > 1 && ptr == 0 && input [0] == String.Empty)
 164                                 ptr++;
 165                         if (input.Length == ptr + 1) {
 166                                 FileInfo[] fi;
 167                                 fi = directory.GetFiles (input [ptr]);
 168                                 return fi;
 169                         } else {
 170                                 DirectoryInfo[] di;
 171                                 FileInfo[] fi;
 172                                 List <FileInfo> fileInfos = new List <FileInfo> ();
 173                                 if (input [ptr] == ".") {
 174                                         di = new DirectoryInfo [1];
 175                                         di [0] = directory;
 176                                 } else if (input [ptr] == "..") {
 177                                         di = new DirectoryInfo [1];
 178                                         di [0] = directory.Parent;
 179                                 } else if (input[ptr] == "**")
 180                                 {
 181                                         // Read this directory and all subdirectories recursive
 182                                         Stack<DirectoryInfo> currentDirectories = new Stack<DirectoryInfo>();
 183                                         currentDirectories.Push(directory);
 184                                         List<DirectoryInfo> allDirectories = new List<DirectoryInfo>();
 185
 186                                         while (currentDirectories.Count > 0)
 187                                         {
 188                                                 DirectoryInfo current = currentDirectories.Pop();
 189                                                 allDirectories.Insert (0, current);
 190                                                 foreach (DirectoryInfo dir in current.GetDirectories())
 191                                                 {
 192                                                         currentDirectories.Push(dir);
 193                                                 }
 194                                         }
 195
 196                                         // No further directories shall be read
 197                                         di = allDirectories.ToArray();
 198                                 } else {
 199                                         di = directory.GetDirectories (input [ptr]);
 200                                 }
 201                                 foreach (DirectoryInfo info in di) {
 202                                         fi = ParseIncludeExclude (input, ptr + 1, info);
 203                                         foreach (FileInfo file in fi)
 204                                                 fileInfos.Add (file);
 205                                 }
 206                                 fi = new FileInfo [fileInfos.Count];
 207                                 int i = 0;
 208                                 foreach (FileInfo file in fileInfos)
 209                                         fi [i++] = file;
 210                                 return fi;
 211                         }
 212                 }
 213
 214                 public DirectoryInfo BaseDirectory {
 215                         get { return baseDirectory; }
 216                         set { baseDirectory = value; }
 217                 }
 218
 219                 public ITaskItem[] Includes {
 220                         get { return includes; }
 221                         set { includes = value; }
 222                 }
 223
 224                 public ITaskItem[] Excludes {
 225                         get { return excludes; }
 226                         set { excludes = value; }
 227                 }
 228
 229                 public ITaskItem[] MatchedItems {
 230                         get { return matchedItems; }
 231                 }
 232
 233                 static bool IsRunningOnWindows {
 234                         get { return _runningOnWindows; }
 235                 }
 236         }
 237 }
 238
 239 #endif