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//------------------------------------------------------------
// Copyright (c) Microsoft Corporation. All rights reserved.
//------------------------------------------------------------
namespace System.ServiceModel.Channels
{
using System;
using System.IO;
using System.Net.Http;
using System.Runtime;
using System.Xml;
abstract class XmlStreamedByteStreamReader : XmlByteStreamReader
{
protected XmlStreamedByteStreamReader(XmlDictionaryReaderQuotas quotas)
: base(quotas)
{
}
public static XmlStreamedByteStreamReader Create(Stream stream, XmlDictionaryReaderQuotas quotas)
{
return new StreamXmlStreamedByteStreamReader(stream, quotas);
}
public static XmlStreamedByteStreamReader Create(HttpRequestMessage httpRequestMessage, XmlDictionaryReaderQuotas quotas)
{
return new HttpRequestMessageStreamedBodyReader(httpRequestMessage, quotas);
}
public static XmlStreamedByteStreamReader Create(HttpResponseMessage httpResponseMessage, XmlDictionaryReaderQuotas quotas)
{
return new HttpResponseMessageStreamedBodyReader(httpResponseMessage, quotas);
}
protected override void OnClose()
{
this.ReleaseStream();
base.OnClose();
}
public override int ReadContentAsBase64(byte[] buffer, int index, int count)
{
EnsureInContent();
ByteStreamMessageUtility.EnsureByteBoundaries(buffer, index, count, true);
if (count == 0)
{
return 0;
}
Stream stream = this.GetStream();
int numBytesRead = stream.Read(buffer, index, count);
if (numBytesRead == 0)
{
this.position = ReaderPosition.EndElement;
}
return numBytesRead;
}
protected override byte[] OnToByteArray()
{
throw FxTrace.Exception.AsError(
new InvalidOperationException(SR.GetByteArrayFromStreamContentNotAllowed));
}
protected override Stream OnToStream()
{
Stream result = this.GetStream();
Fx.Assert(result != null, "The inner stream is null. Please check if the reader is closed or the ToStream method was already called before.");
this.ReleaseStream();
return result;
}
protected abstract Stream GetStream();
protected abstract void ReleaseStream();
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
Stream stream = this.GetStream();
if (!this.IsClosed && stream.CanSeek)
{
long streamLength = stream.Length;
if (streamLength <= int.MaxValue)
{
length = (int)streamLength;
return true;
}
}
length = -1;
return false;
}
class StreamXmlStreamedByteStreamReader : XmlStreamedByteStreamReader
{
private Stream stream;
public StreamXmlStreamedByteStreamReader(Stream stream, XmlDictionaryReaderQuotas quotas)
: base(quotas)
{
Fx.Assert(stream != null, "The 'stream' parameter should not be null.");
this.stream = stream;
}
protected override Stream GetStream()
{
return this.stream;
}
protected override void ReleaseStream()
{
this.stream = null;
}
}
class HttpRequestMessageStreamedBodyReader : XmlStreamedByteStreamReader
{
private HttpRequestMessage httpRequestMessage;
public HttpRequestMessageStreamedBodyReader(HttpRequestMessage httpRequestMessage, XmlDictionaryReaderQuotas quotas)
: base(quotas)
{
Fx.Assert(httpRequestMessage != null, "The 'httpRequestMessage' parameter should not be null.");
this.httpRequestMessage = httpRequestMessage;
}
protected override Stream GetStream()
{
if (this.httpRequestMessage == null)
{
return null;
}
HttpContent content = this.httpRequestMessage.Content;
if (content != null)
{
return content.ReadAsStreamAsync().Result;
}
return new MemoryStream(EmptyArray<byte>.Instance);
}
protected override void ReleaseStream()
{
this.httpRequestMessage = null;
}
}
class HttpResponseMessageStreamedBodyReader : XmlStreamedByteStreamReader
{
private HttpResponseMessage httpResponseMessage;
public HttpResponseMessageStreamedBodyReader(HttpResponseMessage httpResponseMessage, XmlDictionaryReaderQuotas quotas)
: base(quotas)
{
Fx.Assert(httpResponseMessage != null, "The 'httpResponseMessage' parameter should not be null.");
this.httpResponseMessage = httpResponseMessage;
}
protected override Stream GetStream()
{
if (this.httpResponseMessage == null)
{
return null;
}
HttpContent content = this.httpResponseMessage.Content;
if (content != null)
{
return content.ReadAsStreamAsync().Result;
}
return new MemoryStream(EmptyArray<byte>.Instance);
}
protected override void ReleaseStream()
{
this.httpResponseMessage = null;
}
}
}
}
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