108 lines
3.9 KiB
C#
108 lines
3.9 KiB
C#
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//------------------------------------------------------------------------------
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// <copyright file="XmlResolver.cs" company="Microsoft">
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// Copyright (c) Microsoft Corporation. All rights reserved.
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// </copyright>
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// <owner current="true" primary="true">[....]</owner>
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//------------------------------------------------------------------------------
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namespace System.Xml
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{
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using System;
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using System.IO;
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using System.Text;
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using System.Security;
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using System.Security.Permissions;
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#if !SILVERLIGHT
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using System.Net;
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using System.Threading.Tasks;
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#endif
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using System.Runtime.Versioning;
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/// <include file='doc\XmlResolver.uex' path='docs/doc[@for="XmlResolver"]/*' />
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/// <devdoc>
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/// <para>Resolves external XML resources named by a Uniform
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/// Resource Identifier (URI). This class is <see langword='abstract'/>
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/// .</para>
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/// </devdoc>
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public abstract partial class XmlResolver {
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/// <include file='doc\XmlResolver.uex' path='docs/doc[@for="XmlResolver.GetEntity1"]/*' />
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/// <devdoc>
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/// <para>Maps a
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/// URI to an Object containing the actual resource.</para>
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/// </devdoc>
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public abstract Object GetEntity(Uri absoluteUri,
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string role,
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Type ofObjectToReturn);
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/// <include file='doc\XmlResolver.uex' path='docs/doc[@for="XmlResolver.ResolveUri"]/*' />
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/// <devdoc>
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/// <para>[To be supplied.]</para>
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/// </devdoc>
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#if !SILVERLIGHT
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[ResourceExposure(ResourceScope.Machine)]
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[ResourceConsumption(ResourceScope.Machine)]
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#endif
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public virtual Uri ResolveUri(Uri baseUri, string relativeUri) {
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if ( baseUri == null || ( !baseUri.IsAbsoluteUri && baseUri.OriginalString.Length == 0 ) ) {
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Uri uri = new Uri( relativeUri, UriKind.RelativeOrAbsolute );
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#if !SILVERLIGHT // Path.GetFullPath is SecurityCritical
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if ( !uri.IsAbsoluteUri && uri.OriginalString.Length > 0 ) {
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uri = new Uri( Path.GetFullPath( relativeUri ) );
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}
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#endif
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return uri;
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}
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else {
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if (relativeUri == null || relativeUri.Length == 0) {
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return baseUri;
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}
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// relative base Uri
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if ( !baseUri.IsAbsoluteUri ) {
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#if SILVERLIGHT
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// create temporary base for the relative URIs
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Uri tmpBaseUri = new Uri("tmp:///");
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// create absolute base URI with the temporary base
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Uri absBaseUri = new Uri(tmpBaseUri, baseUri.OriginalString);
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// resolve the relative Uri into a new absolute URI
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Uri resolvedAbsUri = new Uri(absBaseUri, relativeUri);
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// make it relative by removing temporary base
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Uri resolvedRelUri = tmpBaseUri.MakeRelativeUri(resolvedAbsUri);
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return resolvedRelUri;
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#else
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throw new NotSupportedException(Res.GetString(Res.Xml_RelativeUriNotSupported));
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#endif
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}
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return new Uri( baseUri, relativeUri );
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}
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}
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#if !SILVERLIGHT
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//UE attension
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/// <include file='doc\XmlResolver.uex' path='docs/doc[@for="XmlResolver.Credentials"]/*' />
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/// <devdoc>
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/// <para>[To be supplied.]</para>
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/// </devdoc>
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public virtual ICredentials Credentials {
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set { }
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}
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#endif
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public virtual bool SupportsType(Uri absoluteUri, Type type) {
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if (absoluteUri == null) {
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throw new ArgumentNullException("absoluteUri");
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}
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if (type == null || type == typeof(Stream)) {
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return true;
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}
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return false;
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}
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}
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}
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