using System;
using System.IO;

namespace Google.Protobuf
{
	// Token: 0x02000013 RID: 19
	internal sealed class LimitedInputStream : Stream
	{
		// Token: 0x06000129 RID: 297 RVA: 0x00007609 File Offset: 0x00005809
		internal LimitedInputStream(Stream proxied, int size)
		{
			this.proxied = proxied;
			this.bytesLeft = size;
		}

		// Token: 0x17000024 RID: 36
		// (get) Token: 0x0600012A RID: 298 RVA: 0x0000324B File Offset: 0x0000144B
		public override bool CanRead
		{
			get
			{
				return true;
			}
		}

		// Token: 0x17000025 RID: 37
		// (get) Token: 0x0600012B RID: 299 RVA: 0x0000761F File Offset: 0x0000581F
		public override bool CanSeek
		{
			get
			{
				return false;
			}
		}

		// Token: 0x17000026 RID: 38
		// (get) Token: 0x0600012C RID: 300 RVA: 0x0000761F File Offset: 0x0000581F
		public override bool CanWrite
		{
			get
			{
				return false;
			}
		}

		// Token: 0x0600012D RID: 301 RVA: 0x00007622 File Offset: 0x00005822
		public override void Flush()
		{
		}

		// Token: 0x17000027 RID: 39
		// (get) Token: 0x0600012E RID: 302 RVA: 0x00007624 File Offset: 0x00005824
		public override long Length
		{
			get
			{
				throw new NotSupportedException();
			}
		}

		// Token: 0x17000028 RID: 40
		// (get) Token: 0x0600012F RID: 303 RVA: 0x00007624 File Offset: 0x00005824
		// (set) Token: 0x06000130 RID: 304 RVA: 0x00007624 File Offset: 0x00005824
		public override long Position
		{
			get
			{
				throw new NotSupportedException();
			}
			set
			{
				throw new NotSupportedException();
			}
		}

		// Token: 0x06000131 RID: 305 RVA: 0x0000762C File Offset: 0x0000582C
		public override int Read(byte[] buffer, int offset, int count)
		{
			if (this.bytesLeft > 0)
			{
				int num = this.proxied.Read(buffer, offset, Math.Min(this.bytesLeft, count));
				this.bytesLeft -= num;
				return num;
			}
			return 0;
		}

		// Token: 0x06000132 RID: 306 RVA: 0x00007624 File Offset: 0x00005824
		public override long Seek(long offset, SeekOrigin origin)
		{
			throw new NotSupportedException();
		}

		// Token: 0x06000133 RID: 307 RVA: 0x00007624 File Offset: 0x00005824
		public override void SetLength(long value)
		{
			throw new NotSupportedException();
		}

		// Token: 0x06000134 RID: 308 RVA: 0x00007624 File Offset: 0x00005824
		public override void Write(byte[] buffer, int offset, int count)
		{
			throw new NotSupportedException();
		}

		// Token: 0x04000048 RID: 72
		private readonly Stream proxied;

		// Token: 0x04000049 RID: 73
		private int bytesLeft;
	}
}