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