84 lines
3.0 KiB
C#
84 lines
3.0 KiB
C#
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//------------------------------------------------------------
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// Copyright (c) Microsoft Corporation. All rights reserved.
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//------------------------------------------------------------
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namespace System.ServiceModel.Dispatcher
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{
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using System.Net.Mime;
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using System.ServiceModel.Channels;
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using System.ServiceModel.Web;
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using System.Text;
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abstract class MultiplexingFormatMapping
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{
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protected Encoding writeEncoding;
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protected string writeCharset;
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protected WebContentTypeMapper contentTypeMapper;
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abstract public WebMessageFormat MessageFormat { get; }
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abstract public WebContentFormat ContentFormat { get; }
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abstract public string DefaultMediaType { get; }
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abstract protected MessageEncoder Encoder { get; }
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ContentType defaultContentType;
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public ContentType DefaultContentType
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{
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get
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{
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if (defaultContentType == null)
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{
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defaultContentType = new ContentType(this.DefaultMediaType) { CharSet = this.writeCharset };
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}
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return defaultContentType;
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}
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}
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public MultiplexingFormatMapping(Encoding writeEncoding, WebContentTypeMapper contentTypeMapper)
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{
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if (writeEncoding == null)
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{
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throw DiagnosticUtility.ExceptionUtility.ThrowHelperArgumentNull("writeEncoding");
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}
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this.writeEncoding = writeEncoding;
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this.writeCharset = TextEncoderDefaults.EncodingToCharSet(writeEncoding);
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this.contentTypeMapper = contentTypeMapper;
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}
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public bool CanFormatResponse(ContentType acceptHeaderElement, bool matchCharset, out ContentType contentType)
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{
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if (acceptHeaderElement == null)
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{
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throw DiagnosticUtility.ExceptionUtility.ThrowHelperArgumentNull("acceptHeaderElement");
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}
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// Scrub the content type so that it is only mediaType and the charset
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string charset = acceptHeaderElement.CharSet;
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contentType = new ContentType(acceptHeaderElement.MediaType);
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contentType.CharSet = this.DefaultContentType.CharSet;
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string contentTypeStr = contentType.ToString();
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if (matchCharset &&
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!string.IsNullOrEmpty(charset) &&
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!string.Equals(charset, this.DefaultContentType.CharSet, StringComparison.OrdinalIgnoreCase))
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{
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return false;
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}
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if (this.contentTypeMapper != null &&
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this.contentTypeMapper.GetMessageFormatForContentType(contentType.MediaType) == this.ContentFormat)
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{
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return true;
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}
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if (this.Encoder.IsContentTypeSupported(contentTypeStr) &&
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(charset == null || contentType.CharSet == this.DefaultContentType.CharSet))
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{
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return true;
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}
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contentType = null;
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return false;
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}
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}
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}
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