Code:
/ 4.0 / 4.0 / DEVDIV_TFS / Dev10 / Releases / RTMRel / ndp / fx / src / Xml / System / Xml / Base64Encoder.cs / 1305376 / 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 ); } } #if !SILVERLIGHT 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 ); } } #endif } // 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 ); } } #if !SILVERLIGHT 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 ); } } #endif } // 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
- AttributeCollection.cs
- StylusPointPropertyInfoDefaults.cs
- Color.cs
- MasterPage.cs
- compensatingcollection.cs
- TraceSection.cs
- RichListBox.cs
- FileBasedResourceGroveler.cs
- NegotiateStream.cs
- Rect3DConverter.cs
- dbdatarecord.cs
- NegotiateStream.cs
- MaterializeFromAtom.cs
- HandlerBase.cs
- ToolboxItemAttribute.cs
- SurrogateChar.cs
- XmlComplianceUtil.cs
- ServiceOperationInvoker.cs
- ObjectListCommandCollection.cs
- PhysicalAddress.cs
- COM2ColorConverter.cs
- TableLayoutPanel.cs
- GridToolTip.cs
- RoutedEventValueSerializer.cs
- HintTextMaxWidthConverter.cs
- DesignTimeTemplateParser.cs
- LineUtil.cs
- SSmlParser.cs
- GenericQueueSurrogate.cs
- NegationPusher.cs
- TaskScheduler.cs
- TextTreeInsertElementUndoUnit.cs
- ExtenderProvidedPropertyAttribute.cs
- Hex.cs
- GroupBox.cs
- OdbcErrorCollection.cs
- ApplicationSecurityInfo.cs
- XmlQuerySequence.cs
- InkCanvas.cs
- SamlSubjectStatement.cs
- DataError.cs
- DocumentSchemaValidator.cs
- Window.cs
- HwndSubclass.cs
- FontWeights.cs
- DataGridViewComboBoxEditingControl.cs
- ManagedFilter.cs
- StyleTypedPropertyAttribute.cs
- ItemCollectionEditor.cs
- webproxy.cs
- MetadataUtil.cs
- MessageTransmitTraceRecord.cs
- XmlJsonWriter.cs
- StrokeNodeOperations2.cs
- ProgressBar.cs
- Int32EqualityComparer.cs
- TableRow.cs
- Errors.cs
- StateItem.cs
- ConfigXmlElement.cs
- CroppedBitmap.cs
- assertwrapper.cs
- DockPanel.cs
- Pair.cs
- RegexMatchCollection.cs
- DataServiceResponse.cs
- IsolatedStorageFile.cs
- RequestDescription.cs
- RemotingConfiguration.cs
- EventLogEntry.cs
- ResourceProperty.cs
- COM2Properties.cs
- ServicePoint.cs
- SizeF.cs
- BasicHttpBindingElement.cs
- CodeTypeParameterCollection.cs
- DateTimeFormat.cs
- SafeThreadHandle.cs
- ElementsClipboardData.cs
- MailDefinitionBodyFileNameEditor.cs
- TypeTypeConverter.cs
- RefreshPropertiesAttribute.cs
- SendContent.cs
- WindowsSysHeader.cs
- TimelineGroup.cs
- JsonDataContract.cs
- OleDbTransaction.cs
- PersianCalendar.cs
- PageBuildProvider.cs
- FixedPosition.cs
- CapacityStreamGeometryContext.cs
- Point4D.cs
- ProcessModule.cs
- TransactionContextValidator.cs
- NativeMethods.cs
- InitializationEventAttribute.cs
- DesignerAutoFormat.cs
- WsatAdminException.cs
- Point3DKeyFrameCollection.cs
- CancellationTokenSource.cs