MultiplexingFormatMapping.cs source code in C# .NET

Source code for the .NET framework in C#

                        
Code:

                         / 4.0 / 4.0 / untmp / DEVDIV_TFS / Dev10 / Releases / RTMRel / ndp / cdf / src / NetFx35 / System.ServiceModel.Web / System / ServiceModel / Dispatcher / MultiplexingFormatMapping.cs / 1305376 / MultiplexingFormatMapping.cs
                        

                        
                            //------------------------------------------------------------ 
// Copyright (c) Microsoft Corporation.  All rights reserved.
//-----------------------------------------------------------
namespace System.ServiceModel.Dispatcher
{ 
    using System.Net.Mime;
    using System.ServiceModel.Channels; 
    using System.ServiceModel.Web; 
    using System.Text;
 
    abstract class MultiplexingFormatMapping
    {
        protected Encoding writeEncoding;
        protected string writeCharset; 
        protected WebContentTypeMapper contentTypeMapper;
 
        abstract public WebMessageFormat MessageFormat { get; } 
        abstract public WebContentFormat ContentFormat { get; }
        abstract public string DefaultMediaType { get; } 
        abstract protected MessageEncoder Encoder { get; }

        ContentType defaultContentType;
 
        public ContentType DefaultContentType
        { 
            get 
            {
                if (defaultContentType == null) 
                {
                    defaultContentType = new ContentType(this.DefaultMediaType) { CharSet = this.writeCharset };
                }
                return defaultContentType; 
            }
        } 
 
        public MultiplexingFormatMapping(Encoding writeEncoding, WebContentTypeMapper contentTypeMapper)
        { 
            if (writeEncoding == null)
            {
                throw DiagnosticUtility.ExceptionUtility.ThrowHelperArgumentNull("writeEncoding");
            } 
            this.writeEncoding = writeEncoding;
            this.writeCharset = TextEncoderDefaults.EncodingToCharSet(writeEncoding); 
            this.contentTypeMapper = contentTypeMapper; 
        }
 
        public bool CanFormatResponse(ContentType acceptHeaderElement, bool matchCharset, out ContentType contentType)
        {
            if (acceptHeaderElement == null)
            { 
                throw DiagnosticUtility.ExceptionUtility.ThrowHelperArgumentNull("acceptHeaderElement");
            } 
 
            // Scrub the content type so that it is only mediaType and the charset
            string charset = acceptHeaderElement.CharSet; 
            contentType = new ContentType(acceptHeaderElement.MediaType);
            contentType.CharSet = this.DefaultContentType.CharSet;
            string contentTypeStr = contentType.ToString();
 
            if (matchCharset &&
                !string.IsNullOrEmpty(charset) && 
                !string.Equals(charset, this.DefaultContentType.CharSet, StringComparison.OrdinalIgnoreCase)) 
            {
                return false; 
            }

            if (this.contentTypeMapper != null &&
                this.contentTypeMapper.GetMessageFormatForContentType(contentType.MediaType) == this.ContentFormat) 
            {
                return true; 
            } 

            if (this.Encoder.IsContentTypeSupported(contentTypeStr) && 
                (charset == null || contentType.CharSet == this.DefaultContentType.CharSet))
            {
                return true;
            } 
            contentType = null;
            return false; 
        } 
    }
 
}

// File provided for Reference Use Only by Microsoft Corporation (c) 2007.

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