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
- ImportCatalogPart.cs
- TextViewBase.cs
- Helpers.cs
- UIElement.cs
- ResourceAttributes.cs
- TextParagraphProperties.cs
- PropertyChangedEventArgs.cs
- xml.cs
- contentDescriptor.cs
- ResourceManager.cs
- dtdvalidator.cs
- GlyphCache.cs
- EventLogEntryCollection.cs
- SafeNativeMethodsMilCoreApi.cs
- ConnectionPoolManager.cs
- EdmComplexTypeAttribute.cs
- SelectingProviderEventArgs.cs
- XsltInput.cs
- TraceProvider.cs
- ContentValidator.cs
- CompositeDataBoundControl.cs
- InteropBitmapSource.cs
- ClientFormsAuthenticationCredentials.cs
- XmlWellformedWriter.cs
- ParseNumbers.cs
- RichTextBoxAutomationPeer.cs
- TypeConverterAttribute.cs
- PointAnimationBase.cs
- DomainLiteralReader.cs
- EventsTab.cs
- isolationinterop.cs
- SoapClientProtocol.cs
- ProfileProvider.cs
- Axis.cs
- CollectionType.cs
- FixedSOMLineRanges.cs
- EntityReference.cs
- DataGridBoolColumn.cs
- WebPartMenuStyle.cs
- WorkflowView.cs
- LoginView.cs
- WebPartCatalogCloseVerb.cs
- DataGridViewMethods.cs
- PerformanceCountersElement.cs
- WebPartConnectionsCancelVerb.cs
- FrameDimension.cs
- XmlDomTextWriter.cs
- VariantWrapper.cs
- WebPartsPersonalization.cs
- WebResponse.cs
- XmlSchemas.cs
- RowToParametersTransformer.cs
- DataGridViewCellCollection.cs
- ValidationErrorCollection.cs
- PasswordRecovery.cs
- TextBoxBase.cs
- DataTableExtensions.cs
- UnsafeNativeMethods.cs
- DocumentViewerConstants.cs
- ListViewItem.cs
- ToolStripItemImageRenderEventArgs.cs
- DataGridLinkButton.cs
- WebZone.cs
- UnsafeCollabNativeMethods.cs
- TablePattern.cs
- AttributeCollection.cs
- PopupRootAutomationPeer.cs
- TypeDependencyAttribute.cs
- SiteIdentityPermission.cs
- VectorValueSerializer.cs
- SpeakInfo.cs
- OleDbSchemaGuid.cs
- XmlSchemaSimpleContent.cs
- AliasedSlot.cs
- ProxyGenerator.cs
- AssemblyCollection.cs
- XomlCompilerHelpers.cs
- BypassElement.cs
- JoinSymbol.cs
- TextBreakpoint.cs
- MissingManifestResourceException.cs
- ReflectionServiceProvider.cs
- ListChangedEventArgs.cs
- GeneralTransform3DCollection.cs
- DataSourceControl.cs
- Site.cs
- SrgsElement.cs
- StorageMappingItemLoader.cs
- ObjectListCommandEventArgs.cs
- FtpRequestCacheValidator.cs
- RewritingSimplifier.cs
- ConnectionStringsExpressionBuilder.cs
- CodeDirectiveCollection.cs
- UseManagedPresentationBindingElementImporter.cs
- HtmlTableRowCollection.cs
- GestureRecognitionResult.cs
- PackWebRequest.cs
- TextLineBreak.cs
- DbParameterHelper.cs
- StorageTypeMapping.cs