Code:
/ 4.0 / 4.0 / DEVDIV_TFS / Dev10 / Releases / RTMRel / ndp / clr / src / BCL / System / IO / UnmanagedMemoryStreamWrapper.cs / 1305376 / 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; using System.Diagnostics.Contracts; 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 { [Pure] get { return _unmanagedStream.CanRead; } } public override bool CanSeek { [Pure] get { return _unmanagedStream.CanSeek; } } public override bool CanWrite { [Pure] 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); } [System.Security.SecuritySafeCritical] // auto-generated 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 (stream==null) throw new ArgumentNullException("stream", Environment.GetResourceString("ArgumentNull_Stream")); Contract.EndContractBlock(); if (!_unmanagedStream._isOpen) __Error.StreamIsClosed(); if (!CanRead) __Error.ReadNotSupported(); 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; using System.Diagnostics.Contracts; 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 { [Pure] get { return _unmanagedStream.CanRead; } } public override bool CanSeek { [Pure] get { return _unmanagedStream.CanSeek; } } public override bool CanWrite { [Pure] 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); } [System.Security.SecuritySafeCritical] // auto-generated 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 (stream==null) throw new ArgumentNullException("stream", Environment.GetResourceString("ArgumentNull_Stream")); Contract.EndContractBlock(); if (!_unmanagedStream._isOpen) __Error.StreamIsClosed(); if (!CanRead) __Error.ReadNotSupported(); 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
- ObjectListDataBindEventArgs.cs
- XmlSchemaNotation.cs
- AsyncDataRequest.cs
- SecuritySessionServerSettings.cs
- ContainerParagraph.cs
- CommentGlyph.cs
- Bold.cs
- XPathScanner.cs
- FixedNode.cs
- XmlParserContext.cs
- SecurityTokenInclusionMode.cs
- ConfigurationPropertyCollection.cs
- HelpProvider.cs
- Adorner.cs
- Focus.cs
- ContainerUIElement3D.cs
- ItemsControl.cs
- ComEventsInfo.cs
- TextTreeText.cs
- XamlTypeMapper.cs
- SetterBase.cs
- OrthographicCamera.cs
- HttpModulesSection.cs
- XmlObjectSerializerContext.cs
- FreezableDefaultValueFactory.cs
- XmlValidatingReaderImpl.cs
- BinaryKeyIdentifierClause.cs
- SafeWaitHandle.cs
- TranslateTransform3D.cs
- ImageDrawing.cs
- EventHandlerList.cs
- TemplateManager.cs
- PositiveTimeSpanValidator.cs
- AssemblyCache.cs
- OutputScope.cs
- glyphs.cs
- XmlSchemaSearchPattern.cs
- ByteStack.cs
- FileLevelControlBuilderAttribute.cs
- AnnotationHelper.cs
- FormsIdentity.cs
- CryptoConfig.cs
- DataGridTablesFactory.cs
- filewebresponse.cs
- SubqueryRules.cs
- odbcmetadatacollectionnames.cs
- InvalidAsynchronousStateException.cs
- LocalTransaction.cs
- TextEffect.cs
- Rect3D.cs
- SpecialTypeDataContract.cs
- MimeFormatExtensions.cs
- tabpagecollectioneditor.cs
- ResourceReader.cs
- SegmentInfo.cs
- CacheDependency.cs
- FormViewDeletedEventArgs.cs
- IndependentAnimationStorage.cs
- StorageSetMapping.cs
- httpserverutility.cs
- StateDesignerConnector.cs
- TrackBarRenderer.cs
- TraceListener.cs
- SystemIPv4InterfaceProperties.cs
- Helpers.cs
- DataView.cs
- FontDialog.cs
- CollectionViewProxy.cs
- QueryContinueDragEvent.cs
- PermissionSetEnumerator.cs
- AssemblyAttributes.cs
- Queue.cs
- ConnectionsZone.cs
- CachingHintValidation.cs
- TreeViewHitTestInfo.cs
- VirtualDirectoryMappingCollection.cs
- TransformationRules.cs
- ColorPalette.cs
- PropertyTab.cs
- SystemIcmpV4Statistics.cs
- Control.cs
- ListDictionary.cs
- FieldDescriptor.cs
- XmlNamespaceManager.cs
- NativeMethods.cs
- OdbcDataAdapter.cs
- LineServicesCallbacks.cs
- DetailsViewDeletedEventArgs.cs
- MemberDomainMap.cs
- ArcSegment.cs
- TemplateBamlTreeBuilder.cs
- SymmetricAlgorithm.cs
- unsafenativemethodsother.cs
- PowerStatus.cs
- XpsPackagingPolicy.cs
- TemplateControlCodeDomTreeGenerator.cs
- BitmapDownload.cs
- Stack.cs
- System.Data.OracleClient_BID.cs
- StringConverter.cs