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using System;
using System.Collections.Generic;
using System.IO;
using System.Threading;
using System.Threading.Tasks;
using MediaBrowser.Model.Services;
using Microsoft.Net.Http.Headers;
namespace Emby.Server.Implementations.HttpServer
{
/// <summary>
/// Class StreamWriter
/// </summary>
public class StreamWriter : IAsyncStreamWriter, IHasHeaders
{
/// <summary>
/// Gets or sets the source stream.
/// </summary>
/// <value>The source stream.</value>
private Stream SourceStream { get; set; }
private byte[] SourceBytes { get; set; }
/// <summary>
/// The _options
/// </summary>
private readonly IDictionary<string, string> _options = new Dictionary<string, string>();
/// <summary>
/// Gets the options.
/// </summary>
/// <value>The options.</value>
public IDictionary<string, string> Headers => _options;
public Action OnComplete { get; set; }
public Action OnError { get; set; }
/// <summary>
/// Initializes a new instance of the <see cref="StreamWriter" /> class.
/// </summary>
/// <param name="source">The source.</param>
/// <param name="contentType">Type of the content.</param>
/// <param name="logger">The logger.</param>
public StreamWriter(Stream source, string contentType)
{
if (string.IsNullOrEmpty(contentType))
{
throw new ArgumentNullException(nameof(contentType));
}
SourceStream = source;
Headers[HeaderNames.ContentType] = contentType;
}
/// <summary>
/// Initializes a new instance of the <see cref="StreamWriter"/> class.
/// </summary>
/// <param name="source">The source.</param>
/// <param name="contentType">Type of the content.</param>
public StreamWriter(byte[] source, string contentType)
{
if (string.IsNullOrEmpty(contentType))
{
throw new ArgumentNullException(nameof(contentType));
}
SourceBytes = source;
Headers[HeaderNames.ContentType] = contentType;
}
public async Task WriteToAsync(Stream responseStream, CancellationToken cancellationToken)
{
try
{
var bytes = SourceBytes;
if (bytes != null)
{
await responseStream.WriteAsync(bytes, 0, bytes.Length).ConfigureAwait(false);
}
else
{
using (var src = SourceStream)
{
await src.CopyToAsync(responseStream).ConfigureAwait(false);
}
}
}
catch
{
if (OnError != null)
{
OnError();
}
throw;
}
finally
{
if (OnComplete != null)
{
OnComplete();
}
}
}
}
}
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