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 namespace Microsoft.Build.BuildEngine {
  35         internal class DirectoryScanner {
  36
  37                 DirectoryInfo   baseDirectory;
  38                 string          includes;
  39                 string          excludes;
  40                 string[]        matchedFilenames;
  41
  42                 public DirectoryScanner ()
  43                 {
  44                 }
  45
  46                 public void Scan ()
  47                 {
  48                         Dictionary <string, bool> excludedItems;
  49                         List <string> includedItems;
  50                         string[] splitInclude, splitExclude;
  51
  52                         if (includes == null)
  53                                 throw new ArgumentNullException ("Includes");
  54                         if (excludes == null)
  55                                 throw new ArgumentNullException ("Excludes");
  56                         if (baseDirectory == null)
  57                                 throw new ArgumentNullException ("BaseDirectory");
  58
  59                         excludedItems = new Dictionary <string, bool> ();
  60                         includedItems = new List <string> ();
  61
  62                         splitInclude = includes.Split (';');
  63                         splitExclude = excludes.Split (';');
  64
  65                         if (excludes != String.Empty) {
  66                                 foreach (string si in splitExclude) {
  67                                         ProcessExclude (si, excludedItems);
  68                                 }
  69                         }
  70                         if (includes != String.Empty) {
  71                                 foreach (string si in splitInclude) {
  72                                         ProcessInclude (si, excludedItems, includedItems);
  73                                 }
  74                         }
  75
  76                         matchedFilenames = includedItems.ToArray ();
  77                 }
  78
  79                 private void ProcessInclude (string name, Dictionary <string, bool> excludedItems, List <string> includedItems)
  80                 {
  81                         string[] separatedPath;
  82                         FileInfo[] fileInfo;
  83
  84                         if (name.IndexOf ('?') == -1 && name.IndexOf ('*') == -1) {
  85                                 if (!excludedItems.ContainsKey (Path.GetFullPath(name)))
  86                                         includedItems.Add (name);
  87                         } else {
  88                                 if (name.Split (Path.DirectorySeparatorChar).Length > name.Split (Path.AltDirectorySeparatorChar).Length) {
  89                                         separatedPath = name.Split (Path.DirectorySeparatorChar);
  90                                 } else {
  91                                         separatedPath = name.Split (Path.AltDirectorySeparatorChar);
  92                                 }
  93                                 if (separatedPath.Length == 1 && separatedPath [0] == String.Empty)
  94                                         return;
  95                                 fileInfo = ParseIncludeExclude (separatedPath, 0, baseDirectory);
  96                                 foreach (FileInfo fi in fileInfo)
  97                                         if (!excludedItems.ContainsKey (fi.FullName))
  98                                                 includedItems.Add (fi.FullName);
  99                         }
 100                 }
 101
 102                 private void ProcessExclude (string name, Dictionary <string, bool> excludedItems)
 103                 {
 104                         string[] separatedPath;
 105                         FileInfo[] fileInfo;
 106
 107                         if (name.IndexOf ('?') == -1 && name.IndexOf ('*') == -1) {
 108                                 if (!excludedItems.ContainsKey (Path.GetFullPath (name)))
 109                                         excludedItems.Add (Path.GetFullPath (name), true);
 110                         } else {
 111                                 if (name.Split (Path.DirectorySeparatorChar).Length > name.Split (Path.AltDirectorySeparatorChar).Length) {
 112                                         separatedPath = name.Split (Path.DirectorySeparatorChar);
 113                                 } else {
 114                                         separatedPath = name.Split (Path.AltDirectorySeparatorChar);
 115                                 }
 116                                 if (separatedPath.Length == 1 && separatedPath [0] == String.Empty)
 117                                         return;
 118                                 fileInfo = ParseIncludeExclude (separatedPath, 0, baseDirectory);
 119                                 foreach (FileInfo fi in fileInfo)
 120                                         if (!excludedItems.ContainsKey (fi.FullName))
 121                                                 excludedItems.Add (fi.FullName, true);
 122                         }
 123                 }
 124
 125                 private FileInfo[] ParseIncludeExclude (string[] input, int ptr, DirectoryInfo directory)
 126                 {
 127                         if (input.Length > 1 && ptr == 0 && input [0] == String.Empty)
 128                                 ptr++;
 129                         if (input.Length == ptr + 1) {
 130                                 FileInfo[] fi;
 131                                 fi = directory.GetFiles (input [ptr]);
 132                                 return fi;
 133                         } else {
 134                                 DirectoryInfo[] di;
 135                                 FileInfo[] fi;
 136                                 List <FileInfo> fileInfos = new List <FileInfo> ();
 137                                 if (input [ptr] == ".") {
 138                                         di = new DirectoryInfo [1];
 139                                         di [0] = directory;
 140                                 } else if (input [ptr] == "..") {
 141                                         di = new DirectoryInfo [1];
 142                                         di [0] = directory.Parent;
 143                                 } else
 144                                         di = directory.GetDirectories (input [ptr]);
 145                                 foreach (DirectoryInfo info in di) {
 146                                         fi = ParseIncludeExclude (input, ptr + 1, info);
 147                                         foreach (FileInfo file in fi)
 148                                                 fileInfos.Add (file);
 149                                 }
 150                                 fi = new FileInfo [fileInfos.Count];
 151                                 int i = 0;
 152                                 foreach (FileInfo file in fileInfos)
 153                                         fi [i++] = file;
 154                                 return fi;
 155                         }
 156                 }
 157
 158                 public DirectoryInfo BaseDirectory {
 159                         get { return baseDirectory; }
 160                         set { baseDirectory = value; }
 161                 }
 162
 163                 public string Includes {
 164                         get { return includes; }
 165                         set { includes = value; }
 166                 }
 167
 168                 public string Excludes {
 169                         get { return excludes; }
 170                         set { excludes = value; }
 171                 }
 172
 173                 public string[] MatchedFilenames {
 174                         get { return matchedFilenames; }
 175                 }
 176
 177         }
 178 }
 179
 180 #endif