XmlStreamedByteStreamReader.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 / NetFx40 / System.ServiceModel.Channels / System / ServiceModel / Channels / XmlStreamedByteStreamReader.cs / 1305376 / XmlStreamedByteStreamReader.cs
                        

                        
                            //------------------------------------------------------------ 
// Copyright (c) Microsoft Corporation.  All rights reserved.
//-----------------------------------------------------------

namespace System.ServiceModel.Channels 
{
    using System; 
    using System.IO; 
    using System.Runtime;
    using System.Xml; 

    class XmlStreamedByteStreamReader : XmlByteStreamReader
    {
        Stream stream; 

        public XmlStreamedByteStreamReader(Stream stream, XmlDictionaryReaderQuotas quotas) : base(quotas) 
        { 
            Fx.Assert(stream != null, "stream is null");
            this.stream = stream; 
        }

        protected override void OnClose()
        { 
            if (this.stream != null)
            { 
                this.stream.Close(); 
            }
            this.stream = null; 
            base.OnClose();
        }

        public override int ReadContentAsBase64(byte[] buffer, int index, int count) 
        {
            EnsureInContent(); 
            ByteStreamMessageUtility.EnsureByteBoundaries(buffer, index, count); 

            if (count == 0) 
            {
                return 0;
            }
 
            int numBytesRead = stream.Read(buffer, index, count);
            if (numBytesRead == 0) 
            { 
                this.position = ReaderPosition.EndElement;
            } 
            return numBytesRead;
        }

        public override bool TryGetBase64ContentLength(out int length) 
        {
            // in ByteStream encoder, we're not concerned about individual xml nodes 
            // therefore we can just return the entire length of the stream 
            if (!this.IsClosed && this.stream.CanSeek)
            { 
                long streamLength = this.stream.Length;
                if (streamLength <= int.MaxValue)
                {
                    length = (int)streamLength; 
                    return true;
                } 
            } 
            length = -1;
            return false; 
        }

    }
} 

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

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