Add --enable-deletion option to buildindex. If used, buildindex will remove deleted...
[beagle.git] / Util / ArrayFu.cs
blob3fac6c39faac05da6be900892eee8a384ec7120e
1 //
2 // ArrayFu.cs
3 //
4 // Copyright (C) 2005 Novell, Inc.
5 //
7 //
8 // Permission is hereby granted, free of charge, to any person obtaining a copy
9 // of this software and associated documentation files (the "Software"), to deal
10 // in the Software without restriction, including without limitation the rights
11 // to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
12 // copies of the Software, and to permit persons to whom the Software is
13 // furnished to do so, subject to the following conditions:
15 // The above copyright notice and this permission notice shall be included in all
16 // copies or substantial portions of the Software.
18 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
19 // IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
20 // FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
21 // AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
22 // LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
23 // OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
24 // SOFTWARE.
27 using System;
28 using System.Collections;
29 using System.Text;
31 namespace Beagle.Util {
33 public class ArrayFu {
35 public static void IntersectListChanges (IList new_list,
36 IList old_list,
37 out IList added_list,
38 out IList removed_list)
40 added_list = new ArrayList ();
41 removed_list = new ArrayList (old_list);
43 foreach (object obj in new_list) {
44 if (old_list.Contains (obj)) {
45 removed_list.Remove (obj);
46 } else {
47 added_list.Add (obj);
52 // This is designed to be used instead of Array.IndexOf as it reduces
53 // boxing and is therefore more efficient.
54 public static int IndexOfByte (byte [] array, byte target, int start)
56 for (int i = start; i < array.Length; ++i)
57 if (array [i] == target)
58 return i;
59 return -1;
62 public static int IndexOfByte (byte [] array, byte target)
64 return IndexOfByte (array, target, 0);
67 public static int IndexOfString (string [] array, string target, int start)
69 for (int i = start; i < array.Length; ++i)
70 if (array [i] == target)
71 return i;
72 return -1;
75 public static int IndexOfString (string [] array, string target)
77 return IndexOfString (array, target, 0);