96 lines
3.5 KiB
C#
96 lines
3.5 KiB
C#
//------------------------------------------------------------------------------
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// <copyright file="NameValueSectionHandler.cs" company="Microsoft">
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// Copyright (c) Microsoft Corporation. All rights reserved.
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// </copyright>
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//------------------------------------------------------------------------------
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namespace System.Configuration {
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using System.Collections;
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using System.Collections.Specialized;
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using System.Xml;
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using System.Globalization;
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/// <devdoc>
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/// Simple dictionary config factory
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/// </devdoc>
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public class NameValueSectionHandler : IConfigurationSectionHandler {
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const string defaultKeyAttribute = "key";
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const string defaultValueAttribute = "value";
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/// <devdoc>
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/// <para>[To be supplied.]</para>
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/// </devdoc>
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public object Create(object parent, object context, XmlNode section) {
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return CreateStatic(parent, section, KeyAttributeName, ValueAttributeName);
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}
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internal static object CreateStatic(object parent, XmlNode section) {
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return CreateStatic(parent, section, defaultKeyAttribute, defaultValueAttribute);
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}
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internal static object CreateStatic(object parent, XmlNode section, string keyAttriuteName, string valueAttributeName) {
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ReadOnlyNameValueCollection result;
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// start result off as a shallow clone of the parent
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if (parent == null)
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result = new ReadOnlyNameValueCollection(StringComparer.OrdinalIgnoreCase);
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else {
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ReadOnlyNameValueCollection parentCollection = (ReadOnlyNameValueCollection)parent;
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result = new ReadOnlyNameValueCollection(parentCollection);
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}
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// process XML
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HandlerBase.CheckForUnrecognizedAttributes(section);
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foreach (XmlNode child in section.ChildNodes) {
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// skip whitespace and comments
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if (HandlerBase.IsIgnorableAlsoCheckForNonElement(child))
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continue;
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// handle <set>, <remove>, <clear> tags
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if (child.Name == "add") {
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String key = HandlerBase.RemoveRequiredAttribute(child, keyAttriuteName);
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String value = HandlerBase.RemoveRequiredAttribute(child, valueAttributeName, true/*allowEmptyString*/);
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HandlerBase.CheckForUnrecognizedAttributes(child);
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result[key] = value;
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}
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else if (child.Name == "remove") {
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String key = HandlerBase.RemoveRequiredAttribute(child, keyAttriuteName);
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HandlerBase.CheckForUnrecognizedAttributes(child);
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result.Remove(key);
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}
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else if (child.Name.Equals("clear")) {
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HandlerBase.CheckForUnrecognizedAttributes(child);
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result.Clear();
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}
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else {
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HandlerBase.ThrowUnrecognizedElement(child);
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}
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}
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result.SetReadOnly();
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return result;
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}
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/// <devdoc>
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/// <para>[To be supplied.]</para>
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/// </devdoc>
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protected virtual string KeyAttributeName {
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get { return defaultKeyAttribute;}
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}
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/// <devdoc>
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/// <para>[To be supplied.]</para>
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/// </devdoc>
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protected virtual string ValueAttributeName {
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get { return defaultValueAttribute;}
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}
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}
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}
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