Code:
/ DotNET / DotNET / 8.0 / untmp / whidbey / REDBITS / ndp / fx / src / Xml / System / Xml / Core / CharEntityEncoderFallback.cs / 1 / CharEntityEncoderFallback.cs
//------------------------------------------------------------------------------ //// Copyright (c) Microsoft Corporation. All rights reserved. // //[....] //----------------------------------------------------------------------------- using System.Text; using System.Diagnostics; using System.Globalization; namespace System.Xml { // // CharEntityEncoderFallback // internal class CharEntityEncoderFallback : EncoderFallback { private CharEntityEncoderFallbackBuffer fallbackBuffer; private int[] textContentMarks; private int endMarkPos; private int curMarkPos; private int startOffset; internal CharEntityEncoderFallback() { } public override EncoderFallbackBuffer CreateFallbackBuffer() { if ( fallbackBuffer == null ) { fallbackBuffer = new CharEntityEncoderFallbackBuffer( this ); } return fallbackBuffer; } public override int MaxCharCount { get { return 12; } } internal int StartOffset { get { return startOffset; } set { startOffset = value; } } internal void Reset( int[] textContentMarks, int endMarkPos ) { this.textContentMarks = textContentMarks; this.endMarkPos = endMarkPos; curMarkPos = 0; } internal bool CanReplaceAt( int index ) { int mPos = curMarkPos; int charPos = startOffset + index; while ( mPos < endMarkPos && charPos >= textContentMarks[mPos+1] ) { mPos++; } curMarkPos = mPos; return (mPos & 1) != 0; } } // // CharEntityFallbackBuffer // internal class CharEntityEncoderFallbackBuffer : EncoderFallbackBuffer { private CharEntityEncoderFallback parent; private string charEntity = string.Empty; private int charEntityIndex = -1; internal CharEntityEncoderFallbackBuffer( CharEntityEncoderFallback parent ) { this.parent = parent; } public override bool Fallback( char charUnknown, int index ) { // If we are already in fallback, throw, it's probably at the suspect character in charEntity if ( charEntityIndex >= 0 ) { (new EncoderExceptionFallbackBuffer()).Fallback( charUnknown, index ); } // find out if we can replace the character with entity if ( parent.CanReplaceAt( index ) ) { // Create the replacement character entity charEntity = string.Format( CultureInfo.InvariantCulture, "{0:X};", new object[] { (int)charUnknown } ); charEntityIndex = 0; return true; } else { EncoderFallbackBuffer errorFallbackBuffer = ( new EncoderExceptionFallback() ).CreateFallbackBuffer(); errorFallbackBuffer.Fallback( charUnknown, index ); return false; } } public override bool Fallback( char charUnknownHigh, char charUnknownLow, int index ) { // check input surrogate pair if ( !char.IsSurrogatePair( charUnknownHigh, charUnknownLow ) ) { throw XmlConvert.CreateInvalidSurrogatePairException( charUnknownHigh, charUnknownLow ); } // If we are already in fallback, throw, it's probably at the suspect character in charEntity if ( charEntityIndex >= 0 ) { (new EncoderExceptionFallbackBuffer()).Fallback( charUnknownHigh, charUnknownLow, index ); } if ( parent.CanReplaceAt( index ) ) { // Create the replacement character entity charEntity = string.Format( CultureInfo.InvariantCulture, "{0:X};", new object[] { char.ConvertToUtf32( charUnknownHigh, charUnknownLow ) } ); charEntityIndex = 0; return true; } else { EncoderFallbackBuffer errorFallbackBuffer = ( new EncoderExceptionFallback() ).CreateFallbackBuffer(); errorFallbackBuffer.Fallback( charUnknownHigh, charUnknownLow, index ); return false; } } public override char GetNextChar() { if ( charEntityIndex == -1 ) { return (char)0; } else { Debug.Assert( charEntityIndex < charEntity.Length ); char ch = charEntity[charEntityIndex++]; if ( charEntityIndex == charEntity.Length ) { charEntityIndex = -1; } return ch; } } public override bool MovePrevious() { if ( charEntityIndex == -1 ) { return false; } else { Debug.Assert( charEntityIndex < charEntity.Length ); if ( charEntityIndex > 0 ) { charEntityIndex--; return true; } else { return false; } } } public override int Remaining { get { if ( charEntityIndex == -1 ) { return 0; } else { return charEntity.Length - charEntityIndex; } } } public override void Reset() { charEntityIndex = -1; } } } // File provided for Reference Use Only by Microsoft Corporation (c) 2007. // Copyright (c) Microsoft Corporation. All rights reserved.
Link Menu
This book is available now!
Buy at Amazon US or
Buy at Amazon UK
- WebReferencesBuildProvider.cs
- EDesignUtil.cs
- QilReplaceVisitor.cs
- Vector3DCollectionValueSerializer.cs
- RelationalExpressions.cs
- EntityDataSourceDataSelectionPanel.cs
- ExpressionValueEditor.cs
- BrowserInteropHelper.cs
- DrawingImage.cs
- Hex.cs
- RecordsAffectedEventArgs.cs
- AnnotationResource.cs
- OdbcRowUpdatingEvent.cs
- PerformanceCounterNameAttribute.cs
- SafeLibraryHandle.cs
- StrongName.cs
- ViewStateAttachedPropertyFeature.cs
- HtmlContainerControl.cs
- ProcessingInstructionAction.cs
- DataGridViewRowErrorTextNeededEventArgs.cs
- DesignerActionService.cs
- SerializationStore.cs
- WrappedIUnknown.cs
- BuildTopDownAttribute.cs
- ResourcePermissionBaseEntry.cs
- RuleValidation.cs
- StylusPointCollection.cs
- JumpTask.cs
- NotSupportedException.cs
- PropertyValue.cs
- DnsPermission.cs
- TextTreeObjectNode.cs
- DataQuery.cs
- RoutedPropertyChangedEventArgs.cs
- ExtendedProtectionPolicyTypeConverter.cs
- HyperLinkColumn.cs
- ParameterCollection.cs
- XPathSelectionIterator.cs
- XPathDocument.cs
- ComponentDispatcher.cs
- storepermissionattribute.cs
- BitmapScalingModeValidation.cs
- CaseExpr.cs
- DefaultTextStore.cs
- FixedTextContainer.cs
- CompilerWrapper.cs
- PersonalizablePropertyEntry.cs
- ObjectTypeMapping.cs
- RemoteWebConfigurationHostStream.cs
- TdsParserSafeHandles.cs
- URL.cs
- Schema.cs
- ChannelRequirements.cs
- ViewKeyConstraint.cs
- DataServiceProviderMethods.cs
- UnicastIPAddressInformationCollection.cs
- NextPreviousPagerField.cs
- X509Extension.cs
- FlowPosition.cs
- SafeTokenHandle.cs
- ContextBase.cs
- ResolvedKeyFrameEntry.cs
- DateTimeFormatInfoScanner.cs
- XpsFontSerializationService.cs
- CommandBinding.cs
- SqlDependencyListener.cs
- DataGridViewTextBoxColumn.cs
- ZipIOCentralDirectoryDigitalSignature.cs
- SqlProfileProvider.cs
- HelpProvider.cs
- DetailsViewRowCollection.cs
- Guid.cs
- AnnotationDocumentPaginator.cs
- CodePageUtils.cs
- ExceptionHelpers.cs
- TypeSystem.cs
- DrawingAttributes.cs
- QilIterator.cs
- WebEventCodes.cs
- QuaternionValueSerializer.cs
- __Error.cs
- _FtpControlStream.cs
- ThreadStateException.cs
- AstTree.cs
- HelpEvent.cs
- ObjectDataSourceSelectingEventArgs.cs
- Vector3dCollection.cs
- PhysicalOps.cs
- ToReply.cs
- CatalogZoneBase.cs
- BamlMapTable.cs
- ScopedMessagePartSpecification.cs
- AccessedThroughPropertyAttribute.cs
- ObjRef.cs
- InlinedAggregationOperator.cs
- CodeLinePragma.cs
- BuildProviderAppliesToAttribute.cs
- BamlLocalizabilityResolver.cs
- ThreadStaticAttribute.cs
- SkinIDTypeConverter.cs