niko
266 lines
16 KiB
C#
266 lines
16 KiB
C#
using System;
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namespace System.IO.Compression
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{
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/// <summary>Provides methods and properties used to compress and decompress streams.</summary>
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// Token: 0x0200010A RID: 266
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public class GZipStream : Stream
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{
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/// <summary>Initializes a new instance of the <see cref="T:System.IO.Compression.GZipStream" /> class using the specified stream and <see cref="T:System.IO.Compression.CompressionMode" /> value.</summary>
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/// <param name="stream">The stream to compress or decompress.</param>
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/// <param name="mode">One of the <see cref="T:System.IO.Compression.CompressionMode" /> values that indicates the action to take.</param>
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/// <exception cref="T:System.ArgumentNullException">
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/// <paramref name="stream" /> is null.</exception>
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/// <exception cref="T:System.InvalidOperationException">
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/// <paramref name="stream" /> access right is ReadOnly and <paramref name="mode" /> value is Compress.</exception>
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/// <exception cref="T:System.ArgumentException">
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/// <paramref name="mode" /> is not a valid <see cref="T:System.IO.Compression.CompressionMode" /> enumeration value.-or-<see cref="T:System.IO.Compression.CompressionMode" /> is <see cref="F:System.IO.Compression.CompressionMode.Compress" /> and <see cref="P:System.IO.Stream.CanWrite" /> is false.-or-<see cref="T:System.IO.Compression.CompressionMode" /> is <see cref="F:System.IO.Compression.CompressionMode.Decompress" /> and <see cref="P:System.IO.Stream.CanRead" /> is false.</exception>
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// Token: 0x060009A8 RID: 2472 RVA: 0x00019A44 File Offset: 0x00017C44
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public GZipStream(Stream compressedStream, CompressionMode mode)
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: this(compressedStream, mode, false)
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{
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}
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/// <summary>Initializes a new instance of the <see cref="T:System.IO.Compression.GZipStream" /> class using the specified stream and <see cref="T:System.IO.Compression.CompressionMode" /> value, and a value that specifies whether to leave the stream open.</summary>
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/// <param name="stream">The stream to compress or decompress.</param>
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/// <param name="mode">One of the <see cref="T:System.IO.Compression.CompressionMode" /> values that indicates the action to take.</param>
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/// <param name="leaveOpen">true to leave the stream open; otherwise, false.</param>
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/// <exception cref="T:System.ArgumentNullException">
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/// <paramref name="stream" /> is null.</exception>
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/// <exception cref="T:System.InvalidOperationException">
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/// <paramref name="stream" /> access right is ReadOnly and <paramref name="mode" /> value is Compress. </exception>
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/// <exception cref="T:System.ArgumentException">
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/// <paramref name="mode" /> is not a valid <see cref="T:System.IO.Compression.CompressionMode" /> value.-or-<see cref="T:System.IO.Compression.CompressionMode" /> is <see cref="F:System.IO.Compression.CompressionMode.Compress" /> and <see cref="P:System.IO.Stream.CanWrite" /> is false.-or-<see cref="T:System.IO.Compression.CompressionMode" /> is <see cref="F:System.IO.Compression.CompressionMode.Decompress" /> and <see cref="P:System.IO.Stream.CanRead" /> is false.</exception>
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// Token: 0x060009A9 RID: 2473 RVA: 0x00019A50 File Offset: 0x00017C50
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public GZipStream(Stream compressedStream, CompressionMode mode, bool leaveOpen)
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{
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this.deflateStream = new DeflateStream(compressedStream, mode, leaveOpen, true);
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}
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/// <summary>Releases the unmanaged resources used by the <see cref="T:System.IO.Compression.GZipStream" /> and optionally releases the managed resources.</summary>
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/// <param name="disposing">true to release both managed and unmanaged resources; false to release only unmanaged resources.</param>
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// Token: 0x060009AA RID: 2474 RVA: 0x00019A68 File Offset: 0x00017C68
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protected override void Dispose(bool disposing)
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{
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if (disposing)
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{
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this.deflateStream.Dispose();
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}
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base.Dispose(disposing);
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}
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/// <summary>Reads a number of decompressed bytes into the specified byte array.</summary>
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/// <returns>The number of bytes that were decompressed into the byte array. If the end of the stream has been reached, zero or the number of bytes read is returned.</returns>
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/// <param name="array">The array used to store decompressed bytes.</param>
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/// <param name="offset">The byte offset in <paramref name="array" /> at which the read bytes will be placed.</param>
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/// <param name="count">The number of bytes decompressed.</param>
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/// <exception cref="T:System.ArgumentNullException">
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/// <paramref name="array" /> is null.</exception>
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/// <exception cref="T:System.InvalidOperationException">The <see cref="T:System.IO.Compression.CompressionMode" /> value was Compress when the object was created.- or -The underlying stream does not support reading.</exception>
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/// <exception cref="T:System.ArgumentOutOfRangeException">
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/// <paramref name="offset" /> or <paramref name="count" /> is less than zero.-or-<paramref name="array" /> length minus the index starting point is less than <paramref name="count" />.</exception>
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/// <exception cref="T:System.IO.InvalidDataException">The data is in an invalid format.</exception>
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/// <exception cref="T:System.ObjectDisposedException">The stream is closed.</exception>
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// Token: 0x060009AB RID: 2475 RVA: 0x00019A84 File Offset: 0x00017C84
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public override int Read(byte[] dest, int dest_offset, int count)
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{
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return this.deflateStream.Read(dest, dest_offset, count);
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}
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/// <summary>Writes compressed bytes to the underlying stream from the specified byte array.</summary>
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/// <param name="array">The buffer that contains the data to compress.</param>
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/// <param name="offset">The byte offset in <paramref name="array" /> at which the compressed bytes will be placed.</param>
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/// <param name="count">The number of bytes compressed.</param>
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/// <exception cref="T:System.ObjectDisposedException">The write operation cannot be performed because the stream is closed.</exception>
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// Token: 0x060009AC RID: 2476 RVA: 0x00019A94 File Offset: 0x00017C94
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public override void Write(byte[] src, int src_offset, int count)
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{
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this.deflateStream.Write(src, src_offset, count);
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}
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/// <summary>Flushes the contents of the internal buffer of the current <see cref="T:System.IO.Compression.GZipStream" /> object to the underlying stream.</summary>
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/// <exception cref="T:System.ObjectDisposedException">The stream is closed.</exception>
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/// <PermissionSet>
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/// <IPermission class="System.Security.Permissions.SecurityPermission, mscorlib, Version=2.0.3600.0, Culture=neutral, PublicKeyToken=b77a5c561934e089" version="1" Flags="UnmanagedCode, ControlEvidence" />
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/// </PermissionSet>
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// Token: 0x060009AD RID: 2477 RVA: 0x00019AA4 File Offset: 0x00017CA4
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public override void Flush()
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{
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this.deflateStream.Flush();
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}
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/// <summary>This property is not supported and always throws a <see cref="T:System.NotSupportedException" />.</summary>
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/// <returns>A long value.</returns>
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/// <param name="offset">The location in the stream.</param>
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/// <param name="origin">One of the <see cref="T:System.IO.SeekOrigin" /> values.</param>
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/// <exception cref="T:System.NotSupportedException">This property is not supported on this stream.</exception>
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// Token: 0x060009AE RID: 2478 RVA: 0x00019AB4 File Offset: 0x00017CB4
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public override long Seek(long offset, SeekOrigin origin)
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{
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return this.deflateStream.Seek(offset, origin);
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}
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/// <summary>This property is not supported and always throws a <see cref="T:System.NotSupportedException" />.</summary>
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/// <param name="value">The length of the stream.</param>
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/// <exception cref="T:System.NotSupportedException">This property is not supported on this stream.</exception>
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// Token: 0x060009AF RID: 2479 RVA: 0x00019AC4 File Offset: 0x00017CC4
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public override void SetLength(long value)
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{
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this.deflateStream.SetLength(value);
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}
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/// <summary>Begins an asynchronous read operation.</summary>
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/// <returns>An <see cref="T:System.IAsyncResult" /> object that represents the asynchronous read, which could still be pending.</returns>
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/// <param name="array">The byte array to read the data into.</param>
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/// <param name="offset">The byte offset in <paramref name="array" /> at which to begin writing data read from the stream.</param>
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/// <param name="count">The maximum number of bytes to read.</param>
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/// <param name="asyncCallback">An optional asynchronous callback, to be called when the read is complete.</param>
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/// <param name="asyncState">A user-provided object that distinguishes this particular asynchronous read request from other requests.</param>
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/// <exception cref="T:System.IO.IOException">An asynchronous read past the end of the stream was attempted, or a disk error occurred.</exception>
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/// <exception cref="T:System.ArgumentException">One or more of the arguments is invalid.</exception>
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/// <exception cref="T:System.ObjectDisposedException">Methods were called after the stream was closed.</exception>
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/// <exception cref="T:System.NotSupportedException">The current <see cref="T:System.IO.Compression.GZipStream" /> implementation does not support the read operation.</exception>
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/// <exception cref="T:System.InvalidOperationException">A read operation cannot be performed because the stream is closed.</exception>
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// Token: 0x060009B0 RID: 2480 RVA: 0x00019AD4 File Offset: 0x00017CD4
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public override IAsyncResult BeginRead(byte[] buffer, int offset, int count, AsyncCallback cback, object state)
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{
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return this.deflateStream.BeginRead(buffer, offset, count, cback, state);
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}
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/// <summary>Begins an asynchronous write operation.</summary>
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/// <returns>An <see cref="T:System.IAsyncResult" /> object that represents the asynchronous write, which could still be pending.</returns>
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/// <param name="array">The buffer containing data to write to the current stream.</param>
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/// <param name="offset">The byte offset in <paramref name="array" /> at which to begin writing.</param>
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/// <param name="count">The maximum number of bytes to write.</param>
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/// <param name="asyncCallback">An optional asynchronous callback to be called when the write is complete.</param>
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/// <param name="asyncState">A user-provided object that distinguishes this particular asynchronous write request from other requests.</param>
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/// <exception cref="T:System.InvalidOperationException">The underlying stream is null. -or-The underlying stream is closed.</exception>
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// Token: 0x060009B1 RID: 2481 RVA: 0x00019AE8 File Offset: 0x00017CE8
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public override IAsyncResult BeginWrite(byte[] buffer, int offset, int count, AsyncCallback cback, object state)
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{
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return this.deflateStream.BeginWrite(buffer, offset, count, cback, state);
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}
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/// <summary>Waits for the pending asynchronous read to complete.</summary>
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/// <returns>The number of bytes read from the stream, between zero (0) and the number of bytes you requested. <see cref="T:System.IO.Compression.GZipStream" /> returns zero (0) only at the end of the stream; otherwise, it blocks until at least one byte is available.</returns>
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/// <param name="asyncResult">The reference to the pending asynchronous request to finish.</param>
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/// <exception cref="T:System.ArgumentNullException">
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/// <paramref name="asyncResult" /> is null.</exception>
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/// <exception cref="T:System.ArgumentException">
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/// <paramref name="asyncResult" /> did not originate from a <see cref="M:System.IO.Compression.DeflateStream.BeginRead(System.Byte[],System.Int32,System.Int32,System.AsyncCallback,System.Object)" /> method on the current stream.</exception>
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/// <exception cref="T:System.InvalidOperationException">The end operation cannot be performed because the stream is closed.</exception>
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// Token: 0x060009B2 RID: 2482 RVA: 0x00019AFC File Offset: 0x00017CFC
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public override int EndRead(IAsyncResult async_result)
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{
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return this.deflateStream.EndRead(async_result);
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}
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/// <summary>Handles the end of an asynchronous write operation.</summary>
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/// <param name="asyncResult">The <see cref="T:System.IAsyncResult" /> object that represents the asynchronous call.</param>
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/// <exception cref="T:System.InvalidOperationException">The underlying stream is null. -or-The underlying stream is closed.</exception>
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// Token: 0x060009B3 RID: 2483 RVA: 0x00019B0C File Offset: 0x00017D0C
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public override void EndWrite(IAsyncResult async_result)
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{
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this.deflateStream.EndWrite(async_result);
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}
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/// <summary>Gets a reference to the underlying stream.</summary>
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/// <returns>A stream object that represents the underlying stream.</returns>
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/// <exception cref="T:System.ObjectDisposedException">The underlying stream is closed.</exception>
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/// <PermissionSet>
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/// <IPermission class="System.Security.Permissions.SecurityPermission, mscorlib, Version=2.0.3600.0, Culture=neutral, PublicKeyToken=b77a5c561934e089" version="1" Flags="UnmanagedCode, ControlEvidence" />
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/// </PermissionSet>
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// Token: 0x17000285 RID: 645
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// (get) Token: 0x060009B4 RID: 2484 RVA: 0x00019B1C File Offset: 0x00017D1C
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public Stream BaseStream
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{
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get
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{
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return this.deflateStream.BaseStream;
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}
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}
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/// <summary>Gets a value indicating whether the stream supports reading while decompressing a file.</summary>
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/// <returns>true if the <see cref="T:System.IO.Compression.CompressionMode" /> value is Decompress, and the underlying stream supports reading and is not closed; otherwise, false.</returns>
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/// <PermissionSet>
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/// <IPermission class="System.Security.Permissions.SecurityPermission, mscorlib, Version=2.0.3600.0, Culture=neutral, PublicKeyToken=b77a5c561934e089" version="1" Flags="UnmanagedCode, ControlEvidence" />
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/// </PermissionSet>
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// Token: 0x17000286 RID: 646
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// (get) Token: 0x060009B5 RID: 2485 RVA: 0x00019B2C File Offset: 0x00017D2C
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public override bool CanRead
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{
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get
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{
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return this.deflateStream.CanRead;
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}
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}
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/// <summary>Gets a value indicating whether the stream supports seeking.</summary>
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/// <returns>false in all cases.</returns>
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// Token: 0x17000287 RID: 647
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// (get) Token: 0x060009B6 RID: 2486 RVA: 0x00019B3C File Offset: 0x00017D3C
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public override bool CanSeek
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{
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get
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{
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return this.deflateStream.CanSeek;
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}
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}
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/// <summary>Gets a value indicating whether the stream supports writing.</summary>
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/// <returns>true if the <see cref="T:System.IO.Compression.CompressionMode" /> value is Compress, and the underlying stream supports writing and is not closed; otherwise, false.</returns>
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/// <PermissionSet>
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/// <IPermission class="System.Security.Permissions.SecurityPermission, mscorlib, Version=2.0.3600.0, Culture=neutral, PublicKeyToken=b77a5c561934e089" version="1" Flags="UnmanagedCode, ControlEvidence" />
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/// </PermissionSet>
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// Token: 0x17000288 RID: 648
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// (get) Token: 0x060009B7 RID: 2487 RVA: 0x00019B4C File Offset: 0x00017D4C
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public override bool CanWrite
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{
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get
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{
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return this.deflateStream.CanWrite;
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}
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}
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/// <summary>This property is not supported and always throws a <see cref="T:System.NotSupportedException" />.</summary>
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/// <returns>A long value.</returns>
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/// <exception cref="T:System.NotSupportedException">This property is not supported on this stream.</exception>
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/// <PermissionSet>
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/// <IPermission class="System.Security.Permissions.SecurityPermission, mscorlib, Version=2.0.3600.0, Culture=neutral, PublicKeyToken=b77a5c561934e089" version="1" Flags="UnmanagedCode, ControlEvidence" />
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/// </PermissionSet>
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// Token: 0x17000289 RID: 649
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// (get) Token: 0x060009B8 RID: 2488 RVA: 0x00019B5C File Offset: 0x00017D5C
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public override long Length
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{
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get
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{
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return this.deflateStream.Length;
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}
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}
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/// <summary>This property is not supported and always throws a <see cref="T:System.NotSupportedException" />.</summary>
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/// <returns>A long value.</returns>
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/// <exception cref="T:System.NotSupportedException">This property is not supported on this stream.</exception>
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/// <PermissionSet>
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/// <IPermission class="System.Security.Permissions.SecurityPermission, mscorlib, Version=2.0.3600.0, Culture=neutral, PublicKeyToken=b77a5c561934e089" version="1" Flags="UnmanagedCode, ControlEvidence" />
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/// </PermissionSet>
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// Token: 0x1700028A RID: 650
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// (get) Token: 0x060009B9 RID: 2489 RVA: 0x00019B6C File Offset: 0x00017D6C
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// (set) Token: 0x060009BA RID: 2490 RVA: 0x00019B7C File Offset: 0x00017D7C
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public override long Position
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{
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get
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{
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return this.deflateStream.Position;
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}
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set
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{
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this.deflateStream.Position = value;
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}
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}
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// Token: 0x04000329 RID: 809
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private DeflateStream deflateStream;
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}
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}
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