76 lines
1.9 KiB
C#
76 lines
1.9 KiB
C#
// Copyright (c) .NET Foundation. All rights reserved.
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// Licensed under the Apache License, Version 2.0. See License.txt in the project root for license information.
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using System;
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using System.IO;
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using System.Threading;
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using System.Threading.Tasks;
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namespace Microsoft.AspNetCore.Mvc
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{
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public class NonSeekableReadStream : Stream
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{
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private Stream _inner;
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public NonSeekableReadStream(byte[] data)
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: this(new MemoryStream(data))
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{
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}
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public NonSeekableReadStream(Stream inner)
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{
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_inner = inner;
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}
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public override bool CanRead => _inner.CanRead;
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public override bool CanSeek => false;
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public override bool CanWrite => false;
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public override long Length
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{
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get { throw new NotSupportedException(); }
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}
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public override long Position
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{
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get { throw new NotSupportedException(); }
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set { throw new NotSupportedException(); }
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}
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public override void Flush()
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{
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throw new NotImplementedException();
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}
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public override long Seek(long offset, SeekOrigin origin)
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{
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throw new NotSupportedException();
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}
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public override void SetLength(long value)
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{
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throw new NotSupportedException();
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}
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public override void Write(byte[] buffer, int offset, int count)
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{
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throw new NotSupportedException();
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}
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public override int Read(byte[] buffer, int offset, int count)
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{
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count = Math.Max(count, 1);
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return _inner.Read(buffer, offset, count);
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}
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public override Task<int> ReadAsync(byte[] buffer, int offset, int count, CancellationToken cancellationToken)
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{
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count = Math.Max(count, 1);
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return _inner.ReadAsync(buffer, offset, count, cancellationToken);
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}
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}
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}
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