MonoRail/Castle.MonoRail.Framework/Helpers/DictHelper.cs

   1 // Copyright 2004-2007 Castle Project - http://www.castleproject.org/
   2 //
   3 // Licensed under the Apache License, Version 2.0 (the "License");
   4 // you may not use this file except in compliance with the License.
   5 // You may obtain a copy of the License at
   6 //
   7 //     http://www.apache.org/licenses/LICENSE-2.0
   8 //
   9 // Unless required by applicable law or agreed to in writing, software
  10 // distributed under the License is distributed on an "AS IS" BASIS,
  11 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  12 // See the License for the specific language governing permissions and
  13 // limitations under the License.
  14
  15 namespace Castle.MonoRail.Framework.Helpers
  16 {
  17         using System;
  18         using System.Collections;
  19         using System.Collections.Specialized;
  20
  21         /// <summary>
  22         /// Helper used to create <see cref="IDictionary"/> instances
  23         /// </summary>
  24         public class DictHelper : AbstractHelper
  25         {
  26                 /// <summary>
  27                 /// Creates an <see cref="IDictionary"/> with entries
  28                 /// infered from the arguments.
  29                 /// <code>
  30                 /// CreateDict( "style=display: none;", "selected" )
  31                 /// </code>
  32                 /// </summary>
  33                 /// <param name="args"></param>
  34                 /// <returns></returns>
  35                 public IDictionary CreateDict(params String[] args)
  36                 {
  37                         return Create(args);
  38                 }
  39
  40                 /// <summary>
  41                 /// Creates a dictionary from specified arguments.
  42                 /// </summary>
  43                 /// <param name="args">The arguments.</param>
  44                 /// <returns></returns>
  45                 public static IDictionary Create(params String[] args)
  46                 {
  47                         IDictionary dict = new HybridDictionary(true);
  48
  49                         foreach(String arg in args)
  50                         {
  51                                 String[] parts = arg.Split('=');
  52
  53                                 if (parts.Length == 1)
  54                                 {
  55                                         dict[arg] = "";
  56                                 }
  57                                 else if (parts.Length == 2)
  58                                 {
  59                                         dict[ parts[0] ] = parts[1];
  60                                 }
  61                                 else
  62                                 {
  63                                         dict[ parts[0] ] = String.Join("=", parts, 1, parts.Length - 1);
  64                                 }
  65                         }
  66
  67                         return dict;
  68                 }
  69
  70                 /// <summary>
  71                 /// Creates a dictionary fros a name value collection.
  72                 /// </summary>
  73                 /// <param name="collection">The collection.</param>
  74                 /// <returns></returns>
  75                 public IDictionary FromNameValueCollection(NameValueCollection collection)
  76                 {
  77                         IDictionary dict = new HybridDictionary(true);
  78
  79                         foreach(string key in collection.AllKeys)
  80                         {
  81                                 if (key == null) continue;
  82                                 dict[key] = collection.GetValues(key);
  83                         }
  84
  85                         return dict;
  86                 }
  87         }
  88 }