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
- AttachedAnnotationChangedEventArgs.cs
- SigningDialog.cs
- LogReserveAndAppendState.cs
- HtmlInputReset.cs
- RuntimeTransactionHandle.cs
- CodeParameterDeclarationExpression.cs
- UserControlBuildProvider.cs
- ColumnResizeUndoUnit.cs
- AnnotationHelper.cs
- SelectionEditingBehavior.cs
- dtdvalidator.cs
- PointAnimationClockResource.cs
- ObjectContextServiceProvider.cs
- StrokeFIndices.cs
- MailAddressCollection.cs
- ResourceSet.cs
- ActionMessageFilter.cs
- PackageRelationshipSelector.cs
- StateFinalizationDesigner.cs
- DeviceFilterDictionary.cs
- SQLStringStorage.cs
- CommandField.cs
- RewritingProcessor.cs
- ObjectDataSource.cs
- DragSelectionMessageFilter.cs
- SchemeSettingElementCollection.cs
- UserControlParser.cs
- ListBox.cs
- SqlStatistics.cs
- RegexReplacement.cs
- ThemeDirectoryCompiler.cs
- FunctionDetailsReader.cs
- HelpProvider.cs
- DBBindings.cs
- DoubleKeyFrameCollection.cs
- TableHeaderCell.cs
- CSharpCodeProvider.cs
- ListControlBuilder.cs
- Semaphore.cs
- LogRecordSequence.cs
- User.cs
- MeasureItemEvent.cs
- DesignerProperties.cs
- ByteRangeDownloader.cs
- HighContrastHelper.cs
- SqlMetaData.cs
- PermissionToken.cs
- PassportAuthenticationEventArgs.cs
- complextypematerializer.cs
- XmlSchemaSimpleTypeUnion.cs
- NameValueFileSectionHandler.cs
- DependencyPropertyValueSerializer.cs
- HttpCachePolicyWrapper.cs
- DiagnosticTrace.cs
- RegistryKey.cs
- Sequence.cs
- DirectoryGroupQuery.cs
- NamedObjectList.cs
- ListViewSelectEventArgs.cs
- SubpageParaClient.cs
- DataRelation.cs
- DateTimeStorage.cs
- DesigntimeLicenseContext.cs
- Section.cs
- TextElement.cs
- Context.cs
- XmlSchemaIdentityConstraint.cs
- ScriptBehaviorDescriptor.cs
- EmbeddedMailObject.cs
- Size.cs
- LineInfo.cs
- securitymgrsite.cs
- Shape.cs
- Application.cs
- PersonalizationProvider.cs
- BaseParser.cs
- ToolboxSnapDragDropEventArgs.cs
- ListComponentEditorPage.cs
- CommandManager.cs
- ipaddressinformationcollection.cs
- IntellisenseTextBox.cs
- SecurityTokenAuthenticator.cs
- PersistenceTypeAttribute.cs
- DataGridViewTextBoxCell.cs
- MemberRelationshipService.cs
- Type.cs
- Int32Rect.cs
- AttributeUsageAttribute.cs
- DecimalAnimationUsingKeyFrames.cs
- ApplicationFileCodeDomTreeGenerator.cs
- BaseWebProxyFinder.cs
- WebServiceResponseDesigner.cs
- DataGridViewRowEventArgs.cs
- BindMarkupExtensionSerializer.cs
- OleDbRowUpdatingEvent.cs
- exports.cs
- RealizationContext.cs
- TagNameToTypeMapper.cs
- GradientStop.cs
- SessionStateContainer.cs