Code:
/ Net / Net / 3.5.50727.3053 / DEVDIV / depot / DevDiv / releases / whidbey / netfxsp / 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
- GetPageNumberCompletedEventArgs.cs
- MethodToken.cs
- SpeechEvent.cs
- CurrentTimeZone.cs
- TabletCollection.cs
- XmlSerializerFactory.cs
- ChangeTracker.cs
- Stackframe.cs
- ResourceExpressionBuilder.cs
- UserMapPath.cs
- _ScatterGatherBuffers.cs
- BufferedReadStream.cs
- ExecutionScope.cs
- EntityDataSourceContextCreatingEventArgs.cs
- IisTraceWebEventProvider.cs
- SoapClientMessage.cs
- StorageMappingItemCollection.cs
- FrameDimension.cs
- __Filters.cs
- SmiEventStream.cs
- LoadedOrUnloadedOperation.cs
- PEFileEvidenceFactory.cs
- WorkflowDefinitionDispenser.cs
- StaticFileHandler.cs
- ServicesUtilities.cs
- Events.cs
- DataGridCellInfo.cs
- ChannelBinding.cs
- UpdatePanelControlTrigger.cs
- UpdatePanelControlTrigger.cs
- DataContractSerializerOperationGenerator.cs
- LookupBindingPropertiesAttribute.cs
- RoutedCommand.cs
- lengthconverter.cs
- WindowsFormsHelpers.cs
- PlatformNotSupportedException.cs
- SafeRightsManagementSessionHandle.cs
- PolyQuadraticBezierSegment.cs
- QilIterator.cs
- WindowsListViewItemCheckBox.cs
- ScalarType.cs
- CoreSwitches.cs
- ThreadInterruptedException.cs
- Geometry3D.cs
- CacheDict.cs
- ButtonBaseAdapter.cs
- AffineTransform3D.cs
- AsyncPostBackErrorEventArgs.cs
- DrawingContextDrawingContextWalker.cs
- DragDeltaEventArgs.cs
- CheckBoxAutomationPeer.cs
- NativeMethodsOther.cs
- RelationshipEnd.cs
- SeparatorAutomationPeer.cs
- CellQuery.cs
- SqlBinder.cs
- ConsumerConnectionPoint.cs
- SecureStringHasher.cs
- ThemeDirectoryCompiler.cs
- WebHttpBinding.cs
- ProxyWebPartManagerDesigner.cs
- TextCompositionManager.cs
- QueryableDataSourceView.cs
- CustomAttributeBuilder.cs
- PowerStatus.cs
- FastEncoderWindow.cs
- DependencyPropertyValueSerializer.cs
- TypeDescriptionProviderAttribute.cs
- BindingNavigatorDesigner.cs
- SQLChars.cs
- DecimalAnimationBase.cs
- EditorPartChrome.cs
- _NegoState.cs
- ListView.cs
- DetailsViewCommandEventArgs.cs
- InvalidOleVariantTypeException.cs
- DesignerProperties.cs
- UTF32Encoding.cs
- AssemblyCache.cs
- UpDownEvent.cs
- GenericUI.cs
- TextLineResult.cs
- AssemblyAttributes.cs
- SafeEventLogWriteHandle.cs
- PagesChangedEventArgs.cs
- EntityDataSourceQueryBuilder.cs
- JournalEntry.cs
- DrawingVisual.cs
- NullableConverter.cs
- PropertyInformation.cs
- ProtocolsConfigurationEntry.cs
- HttpHostedTransportConfiguration.cs
- ADMembershipProvider.cs
- XmlTextAttribute.cs
- SequenceNumber.cs
- Main.cs
- TextElementEnumerator.cs
- PropertyEmitter.cs
- CodeDomSerializerBase.cs
- AnnotationMap.cs