129 lines
3.3 KiB
C#
129 lines
3.3 KiB
C#
//
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// AcceptEncodingConfig.cs
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//
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// Authors:
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// Gonzalo Paniagua Javier (gonzalo@ximian.com)
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//
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// (c) 2003 Ximian, Inc (http://www.ximian.com)
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//
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//
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// Permission is hereby granted, free of charge, to any person obtaining
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// a copy of this software and associated documentation files (the
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// "Software"), to deal in the Software without restriction, including
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// without limitation the rights to use, copy, modify, merge, publish,
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// distribute, sublicense, and/or sell copies of the Software, and to
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// permit persons to whom the Software is furnished to do so, subject to
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// the following conditions:
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//
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// The above copyright notice and this permission notice shall be
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// included in all copies or substantial portions of the Software.
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//
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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// NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
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// LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
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// OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
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// WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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//
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using System;
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using System.Collections;
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using System.Collections.Specialized;
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using System.IO;
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using System.Web;
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namespace Mono.Http.Configuration
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{
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public class AcceptEncodingConfig
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{
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Hashtable tbl = CollectionsUtil.CreateCaseInsensitiveHashtable ();
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public AcceptEncodingConfig () : this (null)
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{
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}
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public AcceptEncodingConfig (AcceptEncodingConfig parent)
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{
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if (parent == null)
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return;
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// FIXME: copy parent's config
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}
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public void Add (string encoding, string type)
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{
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tbl [encoding] = Type.GetType (type);
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}
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public bool SetFilter (HttpResponse response, string acceptEncoding)
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{
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if (acceptEncoding == null)
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return false;
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acceptEncoding = acceptEncoding.Trim ();
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if (acceptEncoding == "")
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return false;
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string [] parts = null;
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if (acceptEncoding.IndexOf (';') != -1)
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parts = acceptEncoding.Split (';');
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else
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parts = acceptEncoding.Split (',');
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string encoding;
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float weight = 0.0f;
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float current = 0.0f;
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Type type = null;
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string name = null;
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int i = 0;
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foreach (string s in parts) {
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encoding = null;
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ParseValue (s, ref encoding, ref weight);
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if (encoding != null && weight > current && tbl.Contains (encoding)) {
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type = tbl [encoding] as Type;
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current = weight;
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name = encoding;
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}
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i++;
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}
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if (type == null)
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return false;
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Stream filter = response.Filter;
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response.Filter = (Stream) Activator.CreateInstance (type, new object [] {filter});
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response.AppendHeader ("Content-Encoding", name);
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return true;
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}
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public void Clear ()
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{
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tbl.Clear ();
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}
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static void ParseValue (string s, ref string encoding, ref float weight)
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{
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//FIXME: make it more spec compliant
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string [] parts = s.Trim ().Split (',');
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if (parts.Length == 1) {
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encoding = parts [0].Trim ();
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weight = 1.0f;
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} else if (parts.Length == 2) {
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encoding = parts [0].Trim ();
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try {
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int i = parts [1].IndexOf ('=');
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if (i != -1)
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weight = Convert.ToSingle (parts [1].Substring (i + 1));
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} catch {
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weight = 0.0f;
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}
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} else {
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//ignore
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}
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}
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}
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}
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