118 lines
3.6 KiB
C#
118 lines
3.6 KiB
C#
//
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// AcceptEncodingSectionHandler.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.Configuration;
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using System.IO;
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using System.Xml;
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namespace Mono.Http.Configuration
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{
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public class AcceptEncodingSectionHandler : IConfigurationSectionHandler
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{
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public object Create (object parent, object configContext, XmlNode section)
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{
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AcceptEncodingConfig cfg = new AcceptEncodingConfig (parent as AcceptEncodingConfig);
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if (section.Attributes != null && section.Attributes.Count != 0)
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ThrowException ("Unrecognized attribute", section);
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XmlNodeList nodes = section.ChildNodes;
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foreach (XmlNode child in nodes) {
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XmlNodeType ntype = child.NodeType;
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if (ntype == XmlNodeType.Whitespace || ntype == XmlNodeType.Comment)
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continue;
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if (ntype != XmlNodeType.Element)
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ThrowException ("Only elements allowed", child);
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string name = child.Name;
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if (name == "clear") {
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if (child.Attributes != null && child.Attributes.Count != 0)
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ThrowException ("Unrecognized attribute", child);
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cfg.Clear ();
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continue;
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}
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if (name != "add")
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ThrowException ("Unexpected element", child);
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string encoding = ExtractAttributeValue ("encoding", child, false);
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string type = ExtractAttributeValue ("type", child, false);
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string disabled = ExtractAttributeValue ("disabled", child, true);
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if (disabled != null && disabled == "yes")
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continue;
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if (child.Attributes != null && child.Attributes.Count != 0)
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ThrowException ("Unrecognized attribute", child);
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cfg.Add (encoding, type);
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}
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return cfg;
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}
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static void ThrowException (string msg, XmlNode node)
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{
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if (node != null && node.Name != String.Empty)
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msg = msg + " (node name: " + node.Name + ") ";
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throw new ConfigurationException (msg, node);
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}
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static string ExtractAttributeValue (string attKey, XmlNode node, bool optional)
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{
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if (node.Attributes == null) {
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if (optional)
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return null;
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ThrowException ("Required attribute not found: " + attKey, node);
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}
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XmlNode att = node.Attributes.RemoveNamedItem (attKey);
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if (att == null) {
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if (optional)
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return null;
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ThrowException ("Required attribute not found: " + attKey, node);
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}
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string value = att.Value;
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if (value == String.Empty) {
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string opt = optional ? "Optional" : "Required";
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ThrowException (opt + " attribute is empty: " + attKey, node);
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}
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return value;
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}
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}
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}
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