Code:
/ Dotnetfx_Win7_3.5.1 / Dotnetfx_Win7_3.5.1 / 3.5.1 / DEVDIV / depot / DevDiv / releases / whidbey / NetFXspW7 / ndp / clr / src / BCL / System / IO / UnmanagedMemoryStreamWrapper.cs / 1 / UnmanagedMemoryStreamWrapper.cs
// ==++== // // Copyright (c) Microsoft Corporation. All rights reserved. // // ==--== /*============================================================ ** ** Class: UnmanagedMemoryStreamWrapper ** ** Purpose: Create a Memorystream over an UnmanagedMemoryStream ** ===========================================================*/ using System; using System.Runtime.InteropServices; using System.Security.Permissions; namespace System.IO { // Needed for backwards compatibility with V1.x usages of the // ResourceManager, where a MemoryStream is now returned as an // UnmanagedMemoryStream from ResourceReader. internal sealed class UnmanagedMemoryStreamWrapper : MemoryStream { private UnmanagedMemoryStream _unmanagedStream; internal UnmanagedMemoryStreamWrapper(UnmanagedMemoryStream stream) { _unmanagedStream = stream; } public override bool CanRead { get { return _unmanagedStream.CanRead; } } public override bool CanSeek { get { return _unmanagedStream.CanSeek; } } public override bool CanWrite { get { return _unmanagedStream.CanWrite; } } protected override void Dispose(bool disposing) { try { if (disposing) _unmanagedStream.Close(); } finally { base.Dispose(disposing); } } public override void Flush() { _unmanagedStream.Flush(); } public override byte[] GetBuffer() { throw new UnauthorizedAccessException(Environment.GetResourceString("UnauthorizedAccess_MemStreamBuffer")); } public override int Capacity { get { return (int) _unmanagedStream.Capacity; } set { throw new IOException(Environment.GetResourceString("IO.IO_FixedCapacity")); } } public override long Length { get { return _unmanagedStream.Length; } } public override long Position { get { return _unmanagedStream.Position; } set { _unmanagedStream.Position = value; } } public override int Read([In, Out] byte[] buffer, int offset, int count) { return _unmanagedStream.Read(buffer, offset, count); } public override int ReadByte() { return _unmanagedStream.ReadByte(); } public override long Seek(long offset, SeekOrigin loc) { return _unmanagedStream.Seek(offset, loc); } public unsafe override byte[] ToArray() { if (!_unmanagedStream._isOpen) __Error.StreamIsClosed(); if (!_unmanagedStream.CanRead) __Error.ReadNotSupported(); byte[] buffer = new byte[_unmanagedStream.Length]; Buffer.memcpy(_unmanagedStream.Pointer, 0, buffer, 0, (int) _unmanagedStream.Length); return buffer; } public override void Write(byte[] buffer, int offset, int count) { _unmanagedStream.Write(buffer, offset, count); } public override void WriteByte(byte value) { _unmanagedStream.WriteByte(value); } // Writes this MemoryStream to another stream. public unsafe override void WriteTo(Stream stream) { if (!_unmanagedStream._isOpen) __Error.StreamIsClosed(); if (!_unmanagedStream.CanRead) __Error.ReadNotSupported(); if (stream==null) throw new ArgumentNullException("stream", Environment.GetResourceString("ArgumentNull_Stream")); byte[] buffer = ToArray(); stream.Write(buffer, 0, buffer.Length); } } } // File provided for Reference Use Only by Microsoft Corporation (c) 2007. // ==++== // // Copyright (c) Microsoft Corporation. All rights reserved. // // ==--== /*============================================================ ** ** Class: UnmanagedMemoryStreamWrapper ** ** Purpose: Create a Memorystream over an UnmanagedMemoryStream ** ===========================================================*/ using System; using System.Runtime.InteropServices; using System.Security.Permissions; namespace System.IO { // Needed for backwards compatibility with V1.x usages of the // ResourceManager, where a MemoryStream is now returned as an // UnmanagedMemoryStream from ResourceReader. internal sealed class UnmanagedMemoryStreamWrapper : MemoryStream { private UnmanagedMemoryStream _unmanagedStream; internal UnmanagedMemoryStreamWrapper(UnmanagedMemoryStream stream) { _unmanagedStream = stream; } public override bool CanRead { get { return _unmanagedStream.CanRead; } } public override bool CanSeek { get { return _unmanagedStream.CanSeek; } } public override bool CanWrite { get { return _unmanagedStream.CanWrite; } } protected override void Dispose(bool disposing) { try { if (disposing) _unmanagedStream.Close(); } finally { base.Dispose(disposing); } } public override void Flush() { _unmanagedStream.Flush(); } public override byte[] GetBuffer() { throw new UnauthorizedAccessException(Environment.GetResourceString("UnauthorizedAccess_MemStreamBuffer")); } public override int Capacity { get { return (int) _unmanagedStream.Capacity; } set { throw new IOException(Environment.GetResourceString("IO.IO_FixedCapacity")); } } public override long Length { get { return _unmanagedStream.Length; } } public override long Position { get { return _unmanagedStream.Position; } set { _unmanagedStream.Position = value; } } public override int Read([In, Out] byte[] buffer, int offset, int count) { return _unmanagedStream.Read(buffer, offset, count); } public override int ReadByte() { return _unmanagedStream.ReadByte(); } public override long Seek(long offset, SeekOrigin loc) { return _unmanagedStream.Seek(offset, loc); } public unsafe override byte[] ToArray() { if (!_unmanagedStream._isOpen) __Error.StreamIsClosed(); if (!_unmanagedStream.CanRead) __Error.ReadNotSupported(); byte[] buffer = new byte[_unmanagedStream.Length]; Buffer.memcpy(_unmanagedStream.Pointer, 0, buffer, 0, (int) _unmanagedStream.Length); return buffer; } public override void Write(byte[] buffer, int offset, int count) { _unmanagedStream.Write(buffer, offset, count); } public override void WriteByte(byte value) { _unmanagedStream.WriteByte(value); } // Writes this MemoryStream to another stream. public unsafe override void WriteTo(Stream stream) { if (!_unmanagedStream._isOpen) __Error.StreamIsClosed(); if (!_unmanagedStream.CanRead) __Error.ReadNotSupported(); if (stream==null) throw new ArgumentNullException("stream", Environment.GetResourceString("ArgumentNull_Stream")); byte[] buffer = ToArray(); stream.Write(buffer, 0, buffer.Length); } } } // File provided for Reference Use Only by Microsoft Corporation (c) 2007.
Link Menu

This book is available now!
Buy at Amazon US or
Buy at Amazon UK
- PagerSettings.cs
- PropertyToken.cs
- GridItemCollection.cs
- CompatibleIComparer.cs
- ContentElementCollection.cs
- EncoderParameter.cs
- SizeChangedEventArgs.cs
- AnnotationAuthorChangedEventArgs.cs
- SafeNativeMethods.cs
- TranslateTransform3D.cs
- StaticContext.cs
- ToRequest.cs
- DBDataPermissionAttribute.cs
- NullToBooleanConverter.cs
- Matrix.cs
- SoapIgnoreAttribute.cs
- LineBreak.cs
- SetState.cs
- TargetParameterCountException.cs
- TreeNodeBindingCollection.cs
- TypeDescriptorFilterService.cs
- DataErrorValidationRule.cs
- UnionExpr.cs
- HashJoinQueryOperatorEnumerator.cs
- UserControl.cs
- SiteMapNodeCollection.cs
- ObjectViewFactory.cs
- GenericPrincipal.cs
- Table.cs
- ValidationException.cs
- DesignerProperties.cs
- UrlRoutingModule.cs
- COM2ExtendedTypeConverter.cs
- HTMLTextWriter.cs
- ErrorsHelper.cs
- WebPartMovingEventArgs.cs
- GorillaCodec.cs
- ObjectTypeMapping.cs
- ActiveXContainer.cs
- StartUpEventArgs.cs
- CodeTypeDeclarationCollection.cs
- AsymmetricAlgorithm.cs
- XmlILModule.cs
- RemotingConfiguration.cs
- SqlFlattener.cs
- _ShellExpression.cs
- ServiceOperationParameter.cs
- WeakHashtable.cs
- ServiceMetadataContractBehavior.cs
- WebBrowserDocumentCompletedEventHandler.cs
- SelectedDatesCollection.cs
- FullTextBreakpoint.cs
- ResourceWriter.cs
- DbParameterCollection.cs
- EventLog.cs
- DictionaryBase.cs
- SmiEventSink_Default.cs
- StylusSystemGestureEventArgs.cs
- Binding.cs
- UnmanagedHandle.cs
- OperatingSystem.cs
- Line.cs
- PerformanceCounterCategory.cs
- DefaultValueConverter.cs
- RuleProcessor.cs
- ILGenerator.cs
- DataColumnSelectionConverter.cs
- SmtpLoginAuthenticationModule.cs
- SortExpressionBuilder.cs
- XmlSchemaGroupRef.cs
- EpmSourcePathSegment.cs
- CapabilitiesAssignment.cs
- AutomationPropertyInfo.cs
- ValueQuery.cs
- MaskInputRejectedEventArgs.cs
- WebPartMinimizeVerb.cs
- RepeaterItemCollection.cs
- ConsumerConnectionPointCollection.cs
- XmlSchemaInfo.cs
- HMACMD5.cs
- VolatileEnlistmentMultiplexing.cs
- DocumentSequence.cs
- WindowsAuthenticationModule.cs
- EncryptedXml.cs
- ServiceModelConfigurationElementCollection.cs
- HttpStreamFormatter.cs
- AsymmetricKeyExchangeDeformatter.cs
- TabletCollection.cs
- DiscreteKeyFrames.cs
- AssemblyInfo.cs
- NegationPusher.cs
- GeometryValueSerializer.cs
- WebPartConnectionCollection.cs
- XmlReturnReader.cs
- LayoutExceptionEventArgs.cs
- SvcFileManager.cs
- ConnectionStringsExpressionBuilder.cs
- Frame.cs
- FixedTextView.cs
- PlanCompiler.cs