Code:
/ Dotnetfx_Win7_3.5.1 / Dotnetfx_Win7_3.5.1 / 3.5.1 / DEVDIV / depot / DevDiv / releases / whidbey / NetFXspW7 / ndp / fx / src / Configuration / System / Configuration / updateconfighost.cs / 1 / updateconfighost.cs
//------------------------------------------------------------------------------ //// Copyright (c) Microsoft Corporation. All rights reserved. // //----------------------------------------------------------------------------- namespace System.Configuration { using System.Collections.Specialized; using System.Configuration.Internal; using System.IO; // // Configuration host that intercepts calls to filename functions // to support SaveAs to an alternate file stream. // internal class UpdateConfigHost : DelegatingConfigHost { private HybridDictionary _streams; // oldStreamname -> StreamUpdate internal UpdateConfigHost(IInternalConfigHost host) { // Delegate to the host provided. Host = host; } // Add a stream to the list of streams to intercept. // // Parameters: // alwaysIntercept - If true, then don't check whether the old stream and the new stream are the same. // SaveAs() will set this to true if oldStreamname is actually referring to a stream // on a remote machine. internal void AddStreamname(string oldStreamname, string newStreamname, bool alwaysIntercept) { // Debug.Assert(!String.IsNullOrEmpty(oldStreamname)); if (String.IsNullOrEmpty(oldStreamname)) { return; } if (!alwaysIntercept && StringUtil.EqualsIgnoreCase(oldStreamname, newStreamname)) { return; } if (_streams == null) { _streams = new HybridDictionary(true); } _streams[oldStreamname] = new StreamUpdate(newStreamname); } // Get the new stream name for a stream if a new name exists, otherwise // return the original stream name. internal string GetNewStreamname(string oldStreamname) { StreamUpdate streamUpdate = GetStreamUpdate(oldStreamname, false); if (streamUpdate != null) { return streamUpdate.NewStreamname; } return oldStreamname; } // // Get the StreamUpdate for a stream. // If alwaysIntercept is true, then the StreamUpdate is // always returned if it exists. // If alwaysIntercept is false, then only return the StreamUpdate // if the new stream has been successfully written to. // private StreamUpdate GetStreamUpdate(string oldStreamname, bool alwaysIntercept) { if (_streams == null) return null; StreamUpdate streamUpdate = (StreamUpdate) _streams[oldStreamname]; if (streamUpdate != null && !alwaysIntercept && !streamUpdate.WriteCompleted) { streamUpdate = null; } return streamUpdate; } public override object GetStreamVersion(string streamName) { StreamUpdate streamUpdate = GetStreamUpdate(streamName, false); if (streamUpdate != null) { return InternalConfigHost.StaticGetStreamVersion(streamUpdate.NewStreamname); } else { return Host.GetStreamVersion(streamName); } } public override Stream OpenStreamForRead(string streamName) { StreamUpdate streamUpdate = GetStreamUpdate(streamName, false); if (streamUpdate != null) { return InternalConfigHost.StaticOpenStreamForRead(streamUpdate.NewStreamname); } else { return Host.OpenStreamForRead(streamName); } } public override Stream OpenStreamForWrite(string streamName, string templateStreamName, ref object writeContext) { // Always attempt to write to the new stream name if it exists. StreamUpdate streamUpdate = GetStreamUpdate(streamName, true); if (streamUpdate != null) { return InternalConfigHost.StaticOpenStreamForWrite(streamUpdate.NewStreamname, templateStreamName, ref writeContext, false); } else { return Host.OpenStreamForWrite(streamName, templateStreamName, ref writeContext); } } public override void WriteCompleted(string streamName, bool success, object writeContext) { StreamUpdate streamUpdate = GetStreamUpdate(streamName, true); if (streamUpdate != null) { InternalConfigHost.StaticWriteCompleted(streamUpdate.NewStreamname, success, writeContext, false); // // Mark the write as having successfully completed, so that subsequent calls // to Read() will use the new stream name. // if (success) { streamUpdate.WriteCompleted = true; } } else { Host.WriteCompleted(streamName, success, writeContext); } } public override bool IsConfigRecordRequired(string configPath) { return true; } public override void DeleteStream(string streamName) { StreamUpdate streamUpdate = GetStreamUpdate(streamName, false); if (streamUpdate != null) { InternalConfigHost.StaticDeleteStream(streamUpdate.NewStreamname); } else { Host.DeleteStream(streamName); } } public override bool IsFile(string streamName) { StreamUpdate streamUpdate = GetStreamUpdate(streamName, false); if (streamUpdate != null) { return InternalConfigHost.StaticIsFile(streamUpdate.NewStreamname); } else { return Host.IsFile(streamName); } } } } // File provided for Reference Use Only by Microsoft Corporation (c) 2007. //------------------------------------------------------------------------------ //// Copyright (c) Microsoft Corporation. All rights reserved. // //----------------------------------------------------------------------------- namespace System.Configuration { using System.Collections.Specialized; using System.Configuration.Internal; using System.IO; // // Configuration host that intercepts calls to filename functions // to support SaveAs to an alternate file stream. // internal class UpdateConfigHost : DelegatingConfigHost { private HybridDictionary _streams; // oldStreamname -> StreamUpdate internal UpdateConfigHost(IInternalConfigHost host) { // Delegate to the host provided. Host = host; } // Add a stream to the list of streams to intercept. // // Parameters: // alwaysIntercept - If true, then don't check whether the old stream and the new stream are the same. // SaveAs() will set this to true if oldStreamname is actually referring to a stream // on a remote machine. internal void AddStreamname(string oldStreamname, string newStreamname, bool alwaysIntercept) { // Debug.Assert(!String.IsNullOrEmpty(oldStreamname)); if (String.IsNullOrEmpty(oldStreamname)) { return; } if (!alwaysIntercept && StringUtil.EqualsIgnoreCase(oldStreamname, newStreamname)) { return; } if (_streams == null) { _streams = new HybridDictionary(true); } _streams[oldStreamname] = new StreamUpdate(newStreamname); } // Get the new stream name for a stream if a new name exists, otherwise // return the original stream name. internal string GetNewStreamname(string oldStreamname) { StreamUpdate streamUpdate = GetStreamUpdate(oldStreamname, false); if (streamUpdate != null) { return streamUpdate.NewStreamname; } return oldStreamname; } // // Get the StreamUpdate for a stream. // If alwaysIntercept is true, then the StreamUpdate is // always returned if it exists. // If alwaysIntercept is false, then only return the StreamUpdate // if the new stream has been successfully written to. // private StreamUpdate GetStreamUpdate(string oldStreamname, bool alwaysIntercept) { if (_streams == null) return null; StreamUpdate streamUpdate = (StreamUpdate) _streams[oldStreamname]; if (streamUpdate != null && !alwaysIntercept && !streamUpdate.WriteCompleted) { streamUpdate = null; } return streamUpdate; } public override object GetStreamVersion(string streamName) { StreamUpdate streamUpdate = GetStreamUpdate(streamName, false); if (streamUpdate != null) { return InternalConfigHost.StaticGetStreamVersion(streamUpdate.NewStreamname); } else { return Host.GetStreamVersion(streamName); } } public override Stream OpenStreamForRead(string streamName) { StreamUpdate streamUpdate = GetStreamUpdate(streamName, false); if (streamUpdate != null) { return InternalConfigHost.StaticOpenStreamForRead(streamUpdate.NewStreamname); } else { return Host.OpenStreamForRead(streamName); } } public override Stream OpenStreamForWrite(string streamName, string templateStreamName, ref object writeContext) { // Always attempt to write to the new stream name if it exists. StreamUpdate streamUpdate = GetStreamUpdate(streamName, true); if (streamUpdate != null) { return InternalConfigHost.StaticOpenStreamForWrite(streamUpdate.NewStreamname, templateStreamName, ref writeContext, false); } else { return Host.OpenStreamForWrite(streamName, templateStreamName, ref writeContext); } } public override void WriteCompleted(string streamName, bool success, object writeContext) { StreamUpdate streamUpdate = GetStreamUpdate(streamName, true); if (streamUpdate != null) { InternalConfigHost.StaticWriteCompleted(streamUpdate.NewStreamname, success, writeContext, false); // // Mark the write as having successfully completed, so that subsequent calls // to Read() will use the new stream name. // if (success) { streamUpdate.WriteCompleted = true; } } else { Host.WriteCompleted(streamName, success, writeContext); } } public override bool IsConfigRecordRequired(string configPath) { return true; } public override void DeleteStream(string streamName) { StreamUpdate streamUpdate = GetStreamUpdate(streamName, false); if (streamUpdate != null) { InternalConfigHost.StaticDeleteStream(streamUpdate.NewStreamname); } else { Host.DeleteStream(streamName); } } public override bool IsFile(string streamName) { StreamUpdate streamUpdate = GetStreamUpdate(streamName, false); if (streamUpdate != null) { return InternalConfigHost.StaticIsFile(streamUpdate.NewStreamname); } else { return Host.IsFile(streamName); } } } } // 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
- TreeNodeStyle.cs
- codemethodreferenceexpression.cs
- DelegateArgumentReference.cs
- Operators.cs
- MultiView.cs
- GreenMethods.cs
- ArrangedElement.cs
- DetailsViewUpdateEventArgs.cs
- ExeContext.cs
- ProtocolsConfiguration.cs
- PathParser.cs
- HTMLTextWriter.cs
- AppSecurityManager.cs
- Error.cs
- TransactionManagerProxy.cs
- xmlsaver.cs
- DirectoryGroupQuery.cs
- MediaScriptCommandRoutedEventArgs.cs
- MSAAEventDispatcher.cs
- Highlights.cs
- VariableAction.cs
- VideoDrawing.cs
- NamespaceEmitter.cs
- ClientSponsor.cs
- BufferedStream.cs
- Command.cs
- LogicalExpr.cs
- ImageListImageEditor.cs
- CodePageUtils.cs
- FamilyCollection.cs
- EdmValidator.cs
- FixedNode.cs
- PointConverter.cs
- IPPacketInformation.cs
- NamedPermissionSet.cs
- DesignerCategoryAttribute.cs
- SplitterCancelEvent.cs
- DesignRelationCollection.cs
- ObsoleteAttribute.cs
- PeerApplication.cs
- MethodImplAttribute.cs
- InvalidOleVariantTypeException.cs
- UInt64Converter.cs
- State.cs
- SrgsNameValueTag.cs
- CounterSet.cs
- COM2IProvidePropertyBuilderHandler.cs
- RtfToken.cs
- ModulesEntry.cs
- EntityProxyFactory.cs
- DashStyles.cs
- ToolStripRenderEventArgs.cs
- FileDialog_Vista.cs
- XmlNavigatorFilter.cs
- ReceiveCompletedEventArgs.cs
- NavigationHelper.cs
- MimeFormatter.cs
- SimpleExpression.cs
- LoadRetryHandler.cs
- MaskInputRejectedEventArgs.cs
- _ListenerAsyncResult.cs
- CodeGenerator.cs
- WpfXamlMember.cs
- ChangeNode.cs
- XPathAncestorIterator.cs
- PageHandlerFactory.cs
- PersonalizationEntry.cs
- ProviderConnectionPoint.cs
- RTLAwareMessageBox.cs
- MetadataHelper.cs
- IPCCacheManager.cs
- ProcessInfo.cs
- AspNetSynchronizationContext.cs
- EventRouteFactory.cs
- XamlPointCollectionSerializer.cs
- ActivityDesignerResources.cs
- UIElement3D.cs
- EncryptedXml.cs
- SuppressIldasmAttribute.cs
- XmlEncodedRawTextWriter.cs
- VirtualPathProvider.cs
- PriorityBinding.cs
- ValueExpressions.cs
- SerializationHelper.cs
- StackSpiller.Bindings.cs
- WaitHandle.cs
- StandardOleMarshalObject.cs
- XmlSerializationReader.cs
- ToolStripDropDownMenu.cs
- Border.cs
- EntityDataSourceDesigner.cs
- TextBoxView.cs
- __ComObject.cs
- ControlOperationInvoker.cs
- DataGridViewRowCollection.cs
- SecurityCriticalDataForSet.cs
- SiteMapNodeCollection.cs
- CapabilitiesState.cs
- SafeWaitHandle.cs
- ObjectStateManager.cs