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 using System;
  29 using System.Collections;
  30 using System.IO;
  31
  32 namespace Microsoft.Build.BuildEngine {
  33         internal class DirectoryScanner {
  34
  35                 DirectoryInfo   baseDirectory;
  36                 string          includes;
  37                 string          excludes;
  38                 string[]        matchedFilenames;
  39
  40                 public DirectoryScanner ()
  41                 {
  42                 }
  43
  44                 public void Scan ()
  45                 {
  46                         Hashtable temporaryItems;
  47                         string[] splittedInclude, splittedExclude;
  48
  49                         if (includes == null)
  50                                 throw new ArgumentNullException ("Includes");
  51                         if (excludes == null)
  52                                 throw new ArgumentNullException ("Excludes");
  53                         if (baseDirectory == null)
  54                                 throw new ArgumentNullException ("BaseDirectory");
  55
  56                         temporaryItems = new Hashtable ();
  57
  58                         splittedInclude = includes.Split (';');
  59                         splittedExclude = excludes.Split (';');
  60
  61                         foreach (string si in splittedInclude) {
  62                                 ProcessInclude (si, temporaryItems);
  63                         }
  64                         if (excludes != String.Empty) {
  65                                 foreach (string si in splittedExclude) {
  66                                         ProcessExclude (si, temporaryItems);
  67                                 }
  68                         }
  69
  70                         matchedFilenames = new string [temporaryItems.Count];
  71                         int i = 0;
  72                         foreach (DictionaryEntry de in temporaryItems)
  73                                 matchedFilenames [i++] = (string) de.Value;
  74                 }
  75
  76                 private void ProcessInclude (string name, Hashtable temporaryItems)
  77                 {
  78                         string[] separatedPath;
  79                         FileInfo[] fileInfo;
  80
  81                         if (name.IndexOf ('?') == -1 && name.IndexOf ('*') == -1)
  82                                 temporaryItems.Add (Path.GetFullPath (name), name);
  83                         else {
  84                                 if (name.Split (Path.DirectorySeparatorChar).Length > name.Split (Path.AltDirectorySeparatorChar).Length) {
  85                                         separatedPath = name.Split (Path.DirectorySeparatorChar);
  86                                 } else {
  87                                         separatedPath = name.Split (Path.AltDirectorySeparatorChar);
  88                                 }
  89                                 if (separatedPath.Length == 1 && separatedPath [0] == String.Empty)
  90                                         return;
  91                                 fileInfo = ParseIncludeExclude (separatedPath, 0, baseDirectory);
  92                                 foreach (FileInfo fi in fileInfo)
  93                                         temporaryItems.Add (fi.FullName, fi.FullName);
  94                         }
  95                 }
  96
  97                 private void ProcessExclude (string name, Hashtable temporaryItems)
  98                 {
  99                         string[] separatedPath;
 100                         FileInfo[] fileInfo;
 101
 102                         if (name.IndexOf ('?') == -1 && name.IndexOf ('*') == -1) {
 103                                 if (temporaryItems.Contains (Path.GetFullPath (name)))
 104                                         temporaryItems.Remove (Path.GetFullPath (name));
 105                         } else {
 106                                 if (name.Split (Path.DirectorySeparatorChar).Length > name.Split (Path.AltDirectorySeparatorChar).Length) {
 107                                         separatedPath = name.Split (Path.DirectorySeparatorChar);
 108                                 } else {
 109                                         separatedPath = name.Split (Path.AltDirectorySeparatorChar);
 110                                 }
 111                                 if (separatedPath.Length == 1 && separatedPath [0] == String.Empty)
 112                                         return;
 113                                 fileInfo = ParseIncludeExclude (separatedPath, 0, baseDirectory);
 114                                 foreach (FileInfo fi in fileInfo)
 115                                         if (temporaryItems.Contains (fi.FullName))
 116                                                 temporaryItems.Remove (fi.FullName);
 117                         }
 118                 }
 119
 120                 private FileInfo[] ParseIncludeExclude (string[] input, int ptr, DirectoryInfo directory)
 121                 {
 122                         if (input.Length > 1 && ptr == 0 && input [0] == String.Empty)
 123                                 ptr++;
 124                         if (input.Length == ptr + 1) {
 125                                 FileInfo[] fi;
 126                                 fi = directory.GetFiles (input [ptr]);
 127                                 return fi;
 128                         } else {
 129                                 DirectoryInfo[] di;
 130                                 FileInfo[] fi;
 131                                 ArrayList fileInfos = new ArrayList ();
 132                                 if (input [ptr] == ".") {
 133                                         di = new DirectoryInfo [1];
 134                                         di [0] = directory;
 135                                 } else if (input [ptr] == "..") {
 136                                         di = new DirectoryInfo [1];
 137                                         di [0] = directory.Parent;
 138                                 } else
 139                                         di = directory.GetDirectories (input [ptr]);
 140                                 foreach (DirectoryInfo info in di) {
 141                                         fi = ParseIncludeExclude (input, ptr + 1, info);
 142                                         foreach (FileInfo file in fi)
 143                                                 fileInfos.Add (file);
 144                                 }
 145                                 fi = new FileInfo [fileInfos.Count];
 146                                 int i = 0;
 147                                 foreach (FileInfo file in fileInfos)
 148                                         fi [i++] = file;
 149                                 return fi;
 150                         }
 151                 }
 152
 153                 public DirectoryInfo BaseDirectory {
 154                         get { return baseDirectory; }
 155                         set { baseDirectory = value; }
 156                 }
 157
 158                 public string Includes {
 159                         get { return includes; }
 160                         set { includes = value; }
 161                 }
 162
 163                 public string Excludes {
 164                         get { return excludes; }
 165                         set { excludes = value; }
 166                 }
 167
 168                 public string[] MatchedFilenames {
 169                         get { return matchedFilenames; }
 170                 }
 171
 172         }
 173 }