Code:
/ 4.0 / 4.0 / untmp / 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.
Link Menu
This book is available now!
Buy at Amazon US or
Buy at Amazon UK
- DateTimeOffsetStorage.cs
- ZoneButton.cs
- TranslateTransform3D.cs
- DataGridViewAccessibleObject.cs
- XmlCDATASection.cs
- BaseCollection.cs
- ExtensibleClassFactory.cs
- Documentation.cs
- ByteAnimationUsingKeyFrames.cs
- ContainerSelectorActiveEvent.cs
- QueryRewriter.cs
- ObjectDataSourceStatusEventArgs.cs
- SuppressIldasmAttribute.cs
- TemplatePagerField.cs
- SuppressMessageAttribute.cs
- CounterSampleCalculator.cs
- WebPartUtil.cs
- ContentType.cs
- Evidence.cs
- PageAsyncTask.cs
- CodeTryCatchFinallyStatement.cs
- ExpressionBindingsDialog.cs
- HtmlTableCell.cs
- _NetworkingPerfCounters.cs
- ResXFileRef.cs
- ProtocolViolationException.cs
- MessageSecurityProtocolFactory.cs
- CustomExpression.cs
- RepeatBehavior.cs
- Deserializer.cs
- ToolboxItem.cs
- TextEditorLists.cs
- BitConverter.cs
- SQLConvert.cs
- ResponseBodyWriter.cs
- PenThread.cs
- DbTypeMap.cs
- XmlQueryRuntime.cs
- StringResourceManager.cs
- XmlName.cs
- ApplicationFileParser.cs
- DataGridViewImageColumn.cs
- XmlNodeChangedEventArgs.cs
- TablePattern.cs
- OdbcConnectionPoolProviderInfo.cs
- UnmanagedMemoryAccessor.cs
- XhtmlBasicListAdapter.cs
- RoleManagerSection.cs
- SqlDataSourceDesigner.cs
- StylusCollection.cs
- InputScopeConverter.cs
- BooleanToVisibilityConverter.cs
- PageThemeBuildProvider.cs
- JsonCollectionDataContract.cs
- PersonalizableAttribute.cs
- HostProtectionPermission.cs
- InkPresenterAutomationPeer.cs
- DataGridToolTip.cs
- ScrollProperties.cs
- FormsAuthenticationModule.cs
- DetailsView.cs
- ConfigurationSection.cs
- MergablePropertyAttribute.cs
- AccessDataSource.cs
- AmbientProperties.cs
- SettingsSavedEventArgs.cs
- WsdlBuildProvider.cs
- _CookieModule.cs
- DropDownList.cs
- XsltContext.cs
- ResolveInfo.cs
- SynchronizedDispatch.cs
- Module.cs
- SHA384Cng.cs
- X509CertificateCollection.cs
- ToolStripItemImageRenderEventArgs.cs
- MasterPageBuildProvider.cs
- CheckBoxField.cs
- SiteMapNodeItemEventArgs.cs
- SBCSCodePageEncoding.cs
- HttpProxyTransportBindingElement.cs
- Int64Storage.cs
- ProgressBar.cs
- BindingSource.cs
- shaperfactory.cs
- CodeDomSerializer.cs
- StyleHelper.cs
- ArithmeticException.cs
- XamlPointCollectionSerializer.cs
- TextBoxBaseDesigner.cs
- AuthenticationConfig.cs
- SettingsSection.cs
- CommonDialog.cs
- MemberMaps.cs
- MemberHolder.cs
- DiagnosticTrace.cs
- SoundPlayer.cs
- VariableAction.cs
- UnknownBitmapEncoder.cs
- ObjectView.cs