Code:
/ Dotnetfx_Win7_3.5.1 / Dotnetfx_Win7_3.5.1 / 3.5.1 / DEVDIV / depot / DevDiv / releases / whidbey / NetFXspW7 / ndp / fx / src / Xml / System / Xml / Base64Encoder.cs / 1 / Base64Encoder.cs
//------------------------------------------------------------------------------ //// Copyright (c) Microsoft Corporation. All rights reserved. // //[....] //----------------------------------------------------------------------------- using System.Text; using System.Diagnostics; namespace System.Xml { internal abstract class Base64Encoder { byte[] leftOverBytes; int leftOverBytesCount; char[] charsLine; internal const int Base64LineSize = 76; internal const int LineSizeInBytes = Base64LineSize/4*3; internal Base64Encoder() { charsLine = new char[Base64LineSize]; } internal abstract void WriteChars( char[] chars, int index, int count ); internal void Encode( byte[] buffer, int index, int count ) { if ( buffer == null ) { throw new ArgumentNullException( "buffer" ); } if ( index < 0 ) { throw new ArgumentOutOfRangeException( "index" ); } if ( count < 0 ) { throw new ArgumentOutOfRangeException( "count" ); } if ( count > buffer.Length - index ) { throw new ArgumentOutOfRangeException( "count" ); } // encode left-over buffer if( leftOverBytesCount > 0 ) { int i = leftOverBytesCount; while ( i < 3 && count > 0 ) { leftOverBytes[i++] = buffer[index++]; count--; } // the total number of buffer we have is less than 3 -> return if ( count == 0 && i < 3 ) { leftOverBytesCount = i; return; } // encode the left-over buffer and write out int leftOverChars = Convert.ToBase64CharArray( leftOverBytes, 0, 3, charsLine, 0 ); WriteChars( charsLine, 0, leftOverChars ); } // store new left-over buffer leftOverBytesCount = count % 3; if ( leftOverBytesCount > 0 ) { count -= leftOverBytesCount; if ( leftOverBytes == null ) { leftOverBytes = new byte[3]; } for( int i = 0; i < leftOverBytesCount; i++ ) { leftOverBytes[i] = buffer[ index + count + i ]; } } // encode buffer in 76 character long chunks int endIndex = index + count; int chunkSize = LineSizeInBytes; while( index < endIndex ) { if ( index + chunkSize > endIndex ) { chunkSize = endIndex - index; } int charCount = Convert.ToBase64CharArray( buffer, index, chunkSize, charsLine, 0 ); WriteChars( charsLine, 0, charCount ); index += chunkSize; } } internal void Flush() { if ( leftOverBytesCount > 0 ) { int leftOverChars = Convert.ToBase64CharArray( leftOverBytes, 0, leftOverBytesCount, charsLine, 0 ); WriteChars( charsLine, 0, leftOverChars ); leftOverBytesCount = 0; } } } internal class XmlRawWriterBase64Encoder : Base64Encoder { XmlRawWriter rawWriter; internal XmlRawWriterBase64Encoder( XmlRawWriter rawWriter ) { this.rawWriter = rawWriter; } internal override void WriteChars( char[] chars, int index, int count ) { rawWriter.WriteRaw( chars, index, count ); } } internal class XmlTextWriterBase64Encoder : Base64Encoder { XmlTextEncoder xmlTextEncoder; internal XmlTextWriterBase64Encoder( XmlTextEncoder xmlTextEncoder ) { this.xmlTextEncoder = xmlTextEncoder; } internal override void WriteChars( char[] chars, int index, int count ) { xmlTextEncoder.WriteRaw( chars, index, count ); } } } // File provided for Reference Use Only by Microsoft Corporation (c) 2007. //------------------------------------------------------------------------------ //// Copyright (c) Microsoft Corporation. All rights reserved. // //[....] //----------------------------------------------------------------------------- using System.Text; using System.Diagnostics; namespace System.Xml { internal abstract class Base64Encoder { byte[] leftOverBytes; int leftOverBytesCount; char[] charsLine; internal const int Base64LineSize = 76; internal const int LineSizeInBytes = Base64LineSize/4*3; internal Base64Encoder() { charsLine = new char[Base64LineSize]; } internal abstract void WriteChars( char[] chars, int index, int count ); internal void Encode( byte[] buffer, int index, int count ) { if ( buffer == null ) { throw new ArgumentNullException( "buffer" ); } if ( index < 0 ) { throw new ArgumentOutOfRangeException( "index" ); } if ( count < 0 ) { throw new ArgumentOutOfRangeException( "count" ); } if ( count > buffer.Length - index ) { throw new ArgumentOutOfRangeException( "count" ); } // encode left-over buffer if( leftOverBytesCount > 0 ) { int i = leftOverBytesCount; while ( i < 3 && count > 0 ) { leftOverBytes[i++] = buffer[index++]; count--; } // the total number of buffer we have is less than 3 -> return if ( count == 0 && i < 3 ) { leftOverBytesCount = i; return; } // encode the left-over buffer and write out int leftOverChars = Convert.ToBase64CharArray( leftOverBytes, 0, 3, charsLine, 0 ); WriteChars( charsLine, 0, leftOverChars ); } // store new left-over buffer leftOverBytesCount = count % 3; if ( leftOverBytesCount > 0 ) { count -= leftOverBytesCount; if ( leftOverBytes == null ) { leftOverBytes = new byte[3]; } for( int i = 0; i < leftOverBytesCount; i++ ) { leftOverBytes[i] = buffer[ index + count + i ]; } } // encode buffer in 76 character long chunks int endIndex = index + count; int chunkSize = LineSizeInBytes; while( index < endIndex ) { if ( index + chunkSize > endIndex ) { chunkSize = endIndex - index; } int charCount = Convert.ToBase64CharArray( buffer, index, chunkSize, charsLine, 0 ); WriteChars( charsLine, 0, charCount ); index += chunkSize; } } internal void Flush() { if ( leftOverBytesCount > 0 ) { int leftOverChars = Convert.ToBase64CharArray( leftOverBytes, 0, leftOverBytesCount, charsLine, 0 ); WriteChars( charsLine, 0, leftOverChars ); leftOverBytesCount = 0; } } } internal class XmlRawWriterBase64Encoder : Base64Encoder { XmlRawWriter rawWriter; internal XmlRawWriterBase64Encoder( XmlRawWriter rawWriter ) { this.rawWriter = rawWriter; } internal override void WriteChars( char[] chars, int index, int count ) { rawWriter.WriteRaw( chars, index, count ); } } internal class XmlTextWriterBase64Encoder : Base64Encoder { XmlTextEncoder xmlTextEncoder; internal XmlTextWriterBase64Encoder( XmlTextEncoder xmlTextEncoder ) { this.xmlTextEncoder = xmlTextEncoder; } internal override void WriteChars( char[] chars, int index, int count ) { xmlTextEncoder.WriteRaw( chars, index, count ); } } } // 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
- ExtensionFile.cs
- _ListenerAsyncResult.cs
- RelationshipConverter.cs
- XmlReader.cs
- ListItemCollection.cs
- IsolatedStorageFilePermission.cs
- SoapTransportImporter.cs
- ParseElement.cs
- StackSpiller.Generated.cs
- RegexCharClass.cs
- ShapingWorkspace.cs
- Tokenizer.cs
- HttpProcessUtility.cs
- IDReferencePropertyAttribute.cs
- ChannelEndpointElementCollection.cs
- LayoutInformation.cs
- GridViewCancelEditEventArgs.cs
- AssemblyAssociatedContentFileAttribute.cs
- ClientUtils.cs
- ValueType.cs
- DynamicMethod.cs
- EncryptedType.cs
- TargetParameterCountException.cs
- MenuItem.cs
- OleDbSchemaGuid.cs
- ApplicationInterop.cs
- BreadCrumbTextConverter.cs
- Funcletizer.cs
- ToolStripManager.cs
- HeaderUtility.cs
- Int32CollectionConverter.cs
- Models.cs
- LineServices.cs
- DocumentViewerBase.cs
- UserInitiatedRoutedEventPermissionAttribute.cs
- BindableTemplateBuilder.cs
- BitmapEffectInput.cs
- StringReader.cs
- DocumentReference.cs
- ConnectionProviderAttribute.cs
- XmlStringTable.cs
- DataMemberFieldConverter.cs
- NotConverter.cs
- EncryptedKey.cs
- DataObjectPastingEventArgs.cs
- BlurEffect.cs
- TypedReference.cs
- MaskInputRejectedEventArgs.cs
- CodeObjectCreateExpression.cs
- ProgressPage.cs
- CompensationToken.cs
- StrokeFIndices.cs
- MemberAssignmentAnalysis.cs
- BitmapDownload.cs
- RegexRunnerFactory.cs
- XmlNavigatorStack.cs
- CellTreeNodeVisitors.cs
- COM2TypeInfoProcessor.cs
- TraceUtility.cs
- TreeViewCancelEvent.cs
- ParallelTimeline.cs
- MembershipPasswordException.cs
- Itemizer.cs
- StringReader.cs
- SubMenuStyleCollection.cs
- RoleServiceManager.cs
- NewArrayExpression.cs
- DataBinding.cs
- MemberProjectedSlot.cs
- ParseChildrenAsPropertiesAttribute.cs
- Cloud.cs
- XPathDocumentBuilder.cs
- BindToObject.cs
- TemplateEditingService.cs
- Nodes.cs
- FormClosedEvent.cs
- SizeAnimationUsingKeyFrames.cs
- XmlDataSourceView.cs
- TreeChangeInfo.cs
- XPathQilFactory.cs
- ZipIOLocalFileDataDescriptor.cs
- XmlEntity.cs
- SqlConnectionPoolProviderInfo.cs
- PropertyGridCommands.cs
- TextInfo.cs
- CodeAccessSecurityEngine.cs
- ClusterUtils.cs
- UpdateCompiler.cs
- Size.cs
- MessagePropertyAttribute.cs
- EntityProviderServices.cs
- RtType.cs
- GridItemCollection.cs
- EqualityComparer.cs
- DiscoveryInnerClientAdhocCD1.cs
- BridgeDataReader.cs
- XPathSingletonIterator.cs
- EpmSyndicationContentSerializer.cs
- HttpCookiesSection.cs
- XmlLangPropertyAttribute.cs