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
- QuaternionAnimation.cs
- DesignerVerb.cs
- Viewport3DAutomationPeer.cs
- ServiceDesigner.cs
- DoubleCollectionValueSerializer.cs
- TextPointer.cs
- SchemaCollectionPreprocessor.cs
- UTF7Encoding.cs
- InvalidPrinterException.cs
- RowBinding.cs
- ValidatorCompatibilityHelper.cs
- TextDataBindingHandler.cs
- TransformedBitmap.cs
- _LocalDataStoreMgr.cs
- EmbeddedMailObject.cs
- NonSerializedAttribute.cs
- RC2.cs
- BindingNavigatorDesigner.cs
- DodSequenceMerge.cs
- PropertyGridEditorPart.cs
- WebPartConnectionsEventArgs.cs
- NativeMethods.cs
- SqlWebEventProvider.cs
- SqlDependencyListener.cs
- SqlDataSourceStatusEventArgs.cs
- CancellableEnumerable.cs
- ProgressBar.cs
- URLMembershipCondition.cs
- AdapterDictionary.cs
- ClientData.cs
- DataTable.cs
- SafeBitVector32.cs
- WebPartEventArgs.cs
- RelationHandler.cs
- ByteAnimationUsingKeyFrames.cs
- MetadataArtifactLoaderResource.cs
- NullReferenceException.cs
- BinaryQueryOperator.cs
- TextElementAutomationPeer.cs
- PictureBox.cs
- EdmSchemaAttribute.cs
- odbcmetadatacolumnnames.cs
- StateMachineHistory.cs
- TemplateAction.cs
- AnimationStorage.cs
- CatalogPartChrome.cs
- DataContract.cs
- SmiMetaDataProperty.cs
- EntitySqlException.cs
- MasterPageCodeDomTreeGenerator.cs
- DataGridViewCellMouseEventArgs.cs
- DataServiceQueryProvider.cs
- IApplicationTrustManager.cs
- ProcessProtocolHandler.cs
- CommandSet.cs
- InvalidDocumentContentsException.cs
- BinaryFormatterWriter.cs
- ComponentCommands.cs
- Pool.cs
- PeerApplication.cs
- UpdatePanel.cs
- AssemblyFilter.cs
- Panel.cs
- BamlRecordReader.cs
- SingleObjectCollection.cs
- NamespaceExpr.cs
- SqlUserDefinedTypeAttribute.cs
- ExcCanonicalXml.cs
- AttachedPropertyBrowsableAttribute.cs
- BooleanConverter.cs
- BasicCellRelation.cs
- ColorConvertedBitmapExtension.cs
- WindowsUpDown.cs
- DateTimeValueSerializerContext.cs
- SurrogateEncoder.cs
- SqlDataSourceConnectionPanel.cs
- KnownTypeHelper.cs
- NativeCppClassAttribute.cs
- DataMemberListEditor.cs
- ConfigXmlElement.cs
- DesignerOptionService.cs
- PeerTransportSecurityElement.cs
- InternalDispatchObject.cs
- AttributeCollection.cs
- RuntimeHandles.cs
- CommittableTransaction.cs
- DataGridViewAdvancedBorderStyle.cs
- DocumentPage.cs
- RuleRefElement.cs
- Attribute.cs
- IdentityHolder.cs
- InputScopeNameConverter.cs
- UnauthorizedWebPart.cs
- File.cs
- RepeaterCommandEventArgs.cs
- ButtonBaseAdapter.cs
- ProjectionQueryOptionExpression.cs
- MouseCaptureWithinProperty.cs
- PersonalizationStateQuery.cs
- DocumentViewerConstants.cs