MonoRail/Castle.MonoRail.Framework/Routing/RoutingEngine.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.Routing
  16 {
  17         using System;
  18         using System.Collections;
  19         using System.Collections.Generic;
  20
  21         /// <summary>
  22         /// Pendent
  23         /// </summary>
  24         public class RoutingEngine : IRoutingEngine
  25         {
  26                 private readonly IList rules = ArrayList.Synchronized(new ArrayList());
  27                 private readonly Dictionary<string,IRoutingRule> name2Rule = new Dictionary<string,IRoutingRule>();
  28
  29                 /// <summary>
  30                 /// Adds the specified rule.
  31                 /// </summary>
  32                 /// <param name="rule">The rule.</param>
  33                 public void Add(IRoutingRule rule)
  34                 {
  35                         rules.Add(rule);
  36
  37                         // For really fast access
  38                         name2Rule[rule.RouteName] = rule;
  39                 }
  40
  41                 /// <summary>
  42                 /// Creates the URL.
  43                 /// </summary>
  44                 /// <param name="routeName">Name of the route.</param>
  45                 /// <param name="hostname">The hostname.</param>
  46                 /// <param name="virtualPath">The virtual path.</param>
  47                 /// <param name="parameters">The parameters.</param>
  48                 /// <returns></returns>
  49                 public string CreateUrl(string routeName, string hostname, string virtualPath, IDictionary parameters)
  50                 {
  51                         IRoutingRule rule;
  52
  53                         if (!name2Rule.TryGetValue(routeName, out rule))
  54                         {
  55                                 throw new RailsException("Could not find named route: " + routeName);
  56                         }
  57
  58                         return rule.CreateUrl(hostname, virtualPath, parameters);
  59                 }
  60
  61                 /// <summary>
  62                 /// Finds the match.
  63                 /// </summary>
  64                 /// <param name="hostname"></param>
  65                 /// <param name="virtualPath"></param>
  66                 /// <param name="url">The URL.</param>
  67                 /// <returns></returns>
  68                 public RouteMatch FindMatch(string hostname, string virtualPath, string url)
  69                 {
  70                         if (string.IsNullOrEmpty(url))
  71                         {
  72                                 throw new ArgumentNullException("url", "url cannot be empty nor null");
  73                         }
  74
  75                         if (url[url.Length - 1] == '/')
  76                         {
  77                                 url = url.Substring(0, url.Length - 1);
  78                         }
  79
  80                         if (url[0] == '/')
  81                         {
  82                                 url = url.Substring(1);
  83                         }
  84
  85                         foreach(IRoutingRule rule in rules)
  86                         {
  87                                 RouteMatch match = new RouteMatch(rule.ControllerType, rule.RouteName, rule.Action);
  88
  89                                 if (rule.Matches(hostname, virtualPath, url, match))
  90                                 {
  91                                         return match;
  92                                 }
  93                         }
  94
  95                         return null;
  96                 }
  97         }
  98 }