mcs/class/System.Configuration/System.Configuration/ConfigurationLocationCollection.cs

   1 //
   2 // System.Configuration.ConfigurationLocation.cs
   3 //
   4 // Authors:
   5 //      Duncan Mak (duncan@ximian.com)
   6 //
   7 // Permission is hereby granted, free of charge, to any person obtaining
   8 // a copy of this software and associated documentation files (the
   9 // "Software"), to deal in the Software without restriction, including
  10 // without limitation the rights to use, copy, modify, merge, publish,
  11 // distribute, sublicense, and/or sell copies of the Software, and to
  12 // permit persons to whom the Software is furnished to do so, subject to
  13 // the following conditions:
  14 //
  15 // The above copyright notice and this permission notice shall be
  16 // included in all copies or substantial portions of the Software.
  17 //
  18 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  19 // EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  20 // MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  21 // NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
  22 // LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
  23 // OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
  24 // WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  25 //
  26 // Copyright (C) 2004 Novell, Inc (http://www.novell.com)
  27 //
  28
  29 #if NET_2_0
  30
  31 using System.Collections;
  32
  33 namespace System.Configuration {
  34
  35         public class ConfigurationLocationCollection : ReadOnlyCollectionBase
  36         {
  37                 internal ConfigurationLocationCollection ()
  38                 {
  39                 }
  40
  41                 public ConfigurationLocation this [int index] {
  42                         get { return InnerList [index] as ConfigurationLocation; }
  43                 }
  44
  45                 internal void Add (ConfigurationLocation loc)
  46                 {
  47                         InnerList.Add (loc);
  48                 }
  49
  50                 internal ConfigurationLocation Find (string location)
  51                 {
  52                         foreach (ConfigurationLocation loc in InnerList)
  53                                 if (String.Compare (loc.Path, location, StringComparison.OrdinalIgnoreCase) == 0)
  54                                         return loc;
  55                         return null;
  56                 }
  57
  58                 internal ConfigurationLocation FindBest (string location)
  59                 {
  60                         if(String.IsNullOrEmpty (location))
  61                                 return null;
  62
  63                         ConfigurationLocation bestMatch = null;
  64                         int locationlen = location.Length;
  65                         int bestmatchlen = 0;
  66
  67                         foreach (ConfigurationLocation loc in InnerList) {
  68                                 string lpath = loc.Path;
  69                                 if (String.IsNullOrEmpty (lpath))
  70                                         continue;
  71
  72                                 int lpathlen = lpath.Length;
  73                                 if (location.StartsWith (lpath, StringComparison.OrdinalIgnoreCase)) {
  74                                         // Exact match always takes precedence
  75                                         if (locationlen == lpathlen)
  76                                                 return loc;
  77
  78                                         // ensure path based comparisons consider full directory names (i.e. so 'admin' does not match an 'administration' path)
  79                                         if(locationlen > lpathlen && location [lpathlen] != '/')
  80                                                 continue;
  81
  82                                         if(bestMatch == null)
  83                                                 bestMatch = loc;
  84                                         else if (bestmatchlen < lpathlen) {
  85                                                 bestMatch = loc;
  86                                                 bestmatchlen = lpathlen;
  87                                         }
  88                                 }
  89                         }
  90
  91                         return bestMatch;
  92                 }
  93         }
  94 }
  95 #endif