Code:
/ 4.0 / 4.0 / DEVDIV_TFS / Dev10 / Releases / RTMRel / ndp / fx / src / Net / System / Net / Mail / ContentType.cs / 1305376 / ContentType.cs
//------------------------------------------------------------------------------ //// Copyright (c) Microsoft Corporation. All rights reserved. // //----------------------------------------------------------------------------- namespace System.Net.Mime { using System; using System.Collections; using System.Collections.Specialized; using System.IO; using System.Text; using System.Globalization; using System.Net.Mail; ////// Typed Content-Type header /// /// We parse the type during construction and set. /// null and string.empty will throw for construction,set and mediatype/subtype /// constructors set isPersisted to false. isPersisted needs to be tracked seperately /// than isChanged because isChanged only determines if the cached value should be used. /// isPersisted tracks if the object has been persisted. However, obviously if isChanged is true /// the object isn't persisted. /// If any subcomponents are changed, isChanged is set to true and isPersisted is false /// ToString caches the value until a isChanged is true, then it recomputes the full value. /// public class ContentType { string mediaType; string subType; bool isChanged; string type; bool isPersisted; TrackingStringDictionary parameters; ////// Default content type - can be used if the Content-Type header /// is not defined in the message headers. /// internal readonly static string Default = "application/octet-stream"; public ContentType() : this(Default) { } ////// ctor. /// /// Unparsed value of the Content-Type header. public ContentType(string contentType) { if (contentType == null) { throw new ArgumentNullException("contentType"); } if (contentType == String.Empty) { throw new ArgumentException(SR.GetString(SR.net_emptystringcall,"contentType"), "contentType"); } isChanged = true; type = contentType; ParseValue(); } public string Boundary { get { return Parameters["boundary"]; } set { if (value == null || value == string.Empty) { Parameters.Remove("boundary"); } else{ Parameters["boundary"] = value; } } } public string CharSet { get { return Parameters["charset"]; } set { if (value == null || value == string.Empty) { Parameters.Remove("charset"); } else{ Parameters["charset"] = value; } } } ////// Gets the media type. /// public string MediaType { get { return mediaType + "/" + subType; } set { if (value == null) { throw new ArgumentNullException("value"); } if (value == string.Empty) { throw new ArgumentException(SR.GetString(SR.net_emptystringset), "value"); } int offset = 0; mediaType = MailBnfHelper.ReadToken(value, ref offset, null); if (mediaType.Length == 0 || offset >= value.Length || value[offset++] != '/') throw new FormatException(SR.GetString(SR.MediaTypeInvalid)); subType = MailBnfHelper.ReadToken(value, ref offset, null); if(subType.Length == 0 || offset < value.Length){ throw new FormatException(SR.GetString(SR.MediaTypeInvalid)); } isChanged = true; isPersisted = false; } } public string Name { get { string value = Parameters["name"]; Encoding nameEncoding = MimeBasePart.DecodeEncoding(value); if(nameEncoding != null) value = MimeBasePart.DecodeHeaderValue(value); return value; } set { if (value == null || value == string.Empty) { Parameters.Remove("name"); } else{ if (MimeBasePart.IsAscii(value, false)) { Parameters["name"] = value; } else { Encoding encoding = Encoding.GetEncoding(MimeBasePart.defaultCharSet); Parameters["name"] = MimeBasePart.EncodeHeaderValue(value, encoding, MimeBasePart.ShouldUseBase64Encoding(encoding)); } } } } public StringDictionary Parameters { get { if (parameters == null) { if (type == null) { parameters = new TrackingStringDictionary(); } } return parameters; } } internal void Set(string contentType, HeaderCollection headers) { type = contentType; ParseValue(); headers.InternalSet(MailHeaderInfo.GetString(MailHeaderID.ContentType), ToString()); isPersisted = true; } internal void PersistIfNeeded(HeaderCollection headers, bool forcePersist) { if (IsChanged || !isPersisted || forcePersist) { headers.InternalSet(MailHeaderInfo.GetString(MailHeaderID.ContentType), ToString()); isPersisted = true; } } internal bool IsChanged { get { return (isChanged || parameters != null && parameters.IsChanged); } } public override string ToString() { if (type == null || IsChanged) { StringBuilder builder = new StringBuilder(); builder.Append(mediaType); builder.Append('/'); builder.Append(subType); foreach (string key in Parameters.Keys) { builder.Append("; "); builder.Append(key); builder.Append('='); MailBnfHelper.GetTokenOrQuotedString(parameters[key], builder); } type = builder.ToString(); isChanged = false; parameters.IsChanged = false; isPersisted = false; } return type; } public override bool Equals(object rparam) { if (rparam == null) { return false; } return (String.Compare(ToString(), rparam.ToString(), StringComparison.OrdinalIgnoreCase ) == 0); } public override int GetHashCode(){ return ToString().GetHashCode(); } // Helper methods. void ParseValue() { int offset = 0; Exception exception = null; parameters = new TrackingStringDictionary(); try{ mediaType = MailBnfHelper.ReadToken(type, ref offset, null); if (mediaType == null || mediaType.Length == 0 || offset >= type.Length || type[offset++] != '/'){ exception = new FormatException(SR.GetString(SR.ContentTypeInvalid)); } if (exception == null) { subType = MailBnfHelper.ReadToken(type, ref offset, null); if (subType == null || subType.Length == 0){ exception = new FormatException(SR.GetString(SR.ContentTypeInvalid)); } } if (exception == null) { while (MailBnfHelper.SkipCFWS(type, ref offset)) { if (type[offset++] != ';'){ exception = new FormatException(SR.GetString(SR.ContentTypeInvalid)); break; } if (!MailBnfHelper.SkipCFWS(type, ref offset)) break; string paramAttribute = MailBnfHelper.ReadParameterAttribute(type, ref offset, null); if(paramAttribute == null || paramAttribute.Length == 0){ exception = new FormatException(SR.GetString(SR.ContentTypeInvalid)); break; } string paramValue; if ( offset >= type.Length || type[offset++] != '='){ exception = new FormatException(SR.GetString(SR.ContentTypeInvalid)); break; } if (!MailBnfHelper.SkipCFWS(type, ref offset)){ exception = new FormatException(SR.GetString(SR.ContentTypeInvalid)); break; } if (type[offset] == '"') paramValue = MailBnfHelper.ReadQuotedString(type, ref offset, null); else paramValue = MailBnfHelper.ReadToken(type, ref offset, null); if(paramValue == null){ exception = new FormatException(SR.GetString(SR.ContentTypeInvalid)); break; } parameters.Add(paramAttribute, paramValue); } } parameters.IsChanged = false; } catch(FormatException){ throw new FormatException(SR.GetString(SR.ContentTypeInvalid)); } if(exception != null){ throw new FormatException(SR.GetString(SR.ContentTypeInvalid)); } } } } // File provided for Reference Use Only by Microsoft Corporation (c) 2007. //------------------------------------------------------------------------------ //// Copyright (c) Microsoft Corporation. All rights reserved. // //----------------------------------------------------------------------------- namespace System.Net.Mime { using System; using System.Collections; using System.Collections.Specialized; using System.IO; using System.Text; using System.Globalization; using System.Net.Mail; ////// Typed Content-Type header /// /// We parse the type during construction and set. /// null and string.empty will throw for construction,set and mediatype/subtype /// constructors set isPersisted to false. isPersisted needs to be tracked seperately /// than isChanged because isChanged only determines if the cached value should be used. /// isPersisted tracks if the object has been persisted. However, obviously if isChanged is true /// the object isn't persisted. /// If any subcomponents are changed, isChanged is set to true and isPersisted is false /// ToString caches the value until a isChanged is true, then it recomputes the full value. /// public class ContentType { string mediaType; string subType; bool isChanged; string type; bool isPersisted; TrackingStringDictionary parameters; ////// Default content type - can be used if the Content-Type header /// is not defined in the message headers. /// internal readonly static string Default = "application/octet-stream"; public ContentType() : this(Default) { } ////// ctor. /// /// Unparsed value of the Content-Type header. public ContentType(string contentType) { if (contentType == null) { throw new ArgumentNullException("contentType"); } if (contentType == String.Empty) { throw new ArgumentException(SR.GetString(SR.net_emptystringcall,"contentType"), "contentType"); } isChanged = true; type = contentType; ParseValue(); } public string Boundary { get { return Parameters["boundary"]; } set { if (value == null || value == string.Empty) { Parameters.Remove("boundary"); } else{ Parameters["boundary"] = value; } } } public string CharSet { get { return Parameters["charset"]; } set { if (value == null || value == string.Empty) { Parameters.Remove("charset"); } else{ Parameters["charset"] = value; } } } ////// Gets the media type. /// public string MediaType { get { return mediaType + "/" + subType; } set { if (value == null) { throw new ArgumentNullException("value"); } if (value == string.Empty) { throw new ArgumentException(SR.GetString(SR.net_emptystringset), "value"); } int offset = 0; mediaType = MailBnfHelper.ReadToken(value, ref offset, null); if (mediaType.Length == 0 || offset >= value.Length || value[offset++] != '/') throw new FormatException(SR.GetString(SR.MediaTypeInvalid)); subType = MailBnfHelper.ReadToken(value, ref offset, null); if(subType.Length == 0 || offset < value.Length){ throw new FormatException(SR.GetString(SR.MediaTypeInvalid)); } isChanged = true; isPersisted = false; } } public string Name { get { string value = Parameters["name"]; Encoding nameEncoding = MimeBasePart.DecodeEncoding(value); if(nameEncoding != null) value = MimeBasePart.DecodeHeaderValue(value); return value; } set { if (value == null || value == string.Empty) { Parameters.Remove("name"); } else{ if (MimeBasePart.IsAscii(value, false)) { Parameters["name"] = value; } else { Encoding encoding = Encoding.GetEncoding(MimeBasePart.defaultCharSet); Parameters["name"] = MimeBasePart.EncodeHeaderValue(value, encoding, MimeBasePart.ShouldUseBase64Encoding(encoding)); } } } } public StringDictionary Parameters { get { if (parameters == null) { if (type == null) { parameters = new TrackingStringDictionary(); } } return parameters; } } internal void Set(string contentType, HeaderCollection headers) { type = contentType; ParseValue(); headers.InternalSet(MailHeaderInfo.GetString(MailHeaderID.ContentType), ToString()); isPersisted = true; } internal void PersistIfNeeded(HeaderCollection headers, bool forcePersist) { if (IsChanged || !isPersisted || forcePersist) { headers.InternalSet(MailHeaderInfo.GetString(MailHeaderID.ContentType), ToString()); isPersisted = true; } } internal bool IsChanged { get { return (isChanged || parameters != null && parameters.IsChanged); } } public override string ToString() { if (type == null || IsChanged) { StringBuilder builder = new StringBuilder(); builder.Append(mediaType); builder.Append('/'); builder.Append(subType); foreach (string key in Parameters.Keys) { builder.Append("; "); builder.Append(key); builder.Append('='); MailBnfHelper.GetTokenOrQuotedString(parameters[key], builder); } type = builder.ToString(); isChanged = false; parameters.IsChanged = false; isPersisted = false; } return type; } public override bool Equals(object rparam) { if (rparam == null) { return false; } return (String.Compare(ToString(), rparam.ToString(), StringComparison.OrdinalIgnoreCase ) == 0); } public override int GetHashCode(){ return ToString().GetHashCode(); } // Helper methods. void ParseValue() { int offset = 0; Exception exception = null; parameters = new TrackingStringDictionary(); try{ mediaType = MailBnfHelper.ReadToken(type, ref offset, null); if (mediaType == null || mediaType.Length == 0 || offset >= type.Length || type[offset++] != '/'){ exception = new FormatException(SR.GetString(SR.ContentTypeInvalid)); } if (exception == null) { subType = MailBnfHelper.ReadToken(type, ref offset, null); if (subType == null || subType.Length == 0){ exception = new FormatException(SR.GetString(SR.ContentTypeInvalid)); } } if (exception == null) { while (MailBnfHelper.SkipCFWS(type, ref offset)) { if (type[offset++] != ';'){ exception = new FormatException(SR.GetString(SR.ContentTypeInvalid)); break; } if (!MailBnfHelper.SkipCFWS(type, ref offset)) break; string paramAttribute = MailBnfHelper.ReadParameterAttribute(type, ref offset, null); if(paramAttribute == null || paramAttribute.Length == 0){ exception = new FormatException(SR.GetString(SR.ContentTypeInvalid)); break; } string paramValue; if ( offset >= type.Length || type[offset++] != '='){ exception = new FormatException(SR.GetString(SR.ContentTypeInvalid)); break; } if (!MailBnfHelper.SkipCFWS(type, ref offset)){ exception = new FormatException(SR.GetString(SR.ContentTypeInvalid)); break; } if (type[offset] == '"') paramValue = MailBnfHelper.ReadQuotedString(type, ref offset, null); else paramValue = MailBnfHelper.ReadToken(type, ref offset, null); if(paramValue == null){ exception = new FormatException(SR.GetString(SR.ContentTypeInvalid)); break; } parameters.Add(paramAttribute, paramValue); } } parameters.IsChanged = false; } catch(FormatException){ throw new FormatException(SR.GetString(SR.ContentTypeInvalid)); } if(exception != null){ throw new FormatException(SR.GetString(SR.ContentTypeInvalid)); } } } } // 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
- EntityViewContainer.cs
- DesignDataSource.cs
- NumberFormatInfo.cs
- BoundingRectTracker.cs
- FontInfo.cs
- ComponentDispatcherThread.cs
- MultiBindingExpression.cs
- LogicalExpr.cs
- Label.cs
- Convert.cs
- MenuEventArgs.cs
- SqlBulkCopy.cs
- TabPage.cs
- TabPanel.cs
- EmptyStringExpandableObjectConverter.cs
- UIElementHelper.cs
- CodeIterationStatement.cs
- Group.cs
- ComplexBindingPropertiesAttribute.cs
- ZipIOLocalFileHeader.cs
- DesignerActionItemCollection.cs
- NamedObject.cs
- RegexTree.cs
- ContentPathSegment.cs
- FacetValues.cs
- ExpressionBuilderCollection.cs
- ToolStripDropDownClosingEventArgs.cs
- TextEmbeddedObject.cs
- WinFormsUtils.cs
- SecureStringHasher.cs
- TimeSpanParse.cs
- StreamingContext.cs
- MouseBinding.cs
- ConfigurationProperty.cs
- _SecureChannel.cs
- IntAverageAggregationOperator.cs
- EmbeddedObject.cs
- SqlTypesSchemaImporter.cs
- WebBrowserNavigatedEventHandler.cs
- CoTaskMemSafeHandle.cs
- SqlCachedBuffer.cs
- EventLogPermissionEntryCollection.cs
- HiddenFieldPageStatePersister.cs
- FrameworkElement.cs
- OutArgument.cs
- UdpTransportBindingElement.cs
- ControlBindingsCollection.cs
- COM2ComponentEditor.cs
- FloaterBaseParagraph.cs
- PrinterSettings.cs
- SafePipeHandle.cs
- StdValidatorsAndConverters.cs
- RoleService.cs
- WizardStepBase.cs
- SqlUnionizer.cs
- SemanticResultKey.cs
- ApplicationDirectory.cs
- RegexFCD.cs
- UpDownBaseDesigner.cs
- WpfKnownMemberInvoker.cs
- PrimitiveSchema.cs
- TokenBasedSetEnumerator.cs
- WebPartRestoreVerb.cs
- UniqueTransportManagerRegistration.cs
- StaticContext.cs
- XmlDownloadManager.cs
- IResourceProvider.cs
- GridViewColumnHeader.cs
- SelectionHighlightInfo.cs
- ObjectManager.cs
- RowToFieldTransformer.cs
- ADConnectionHelper.cs
- Base64Encoder.cs
- XpsDocument.cs
- TypeDescriptor.cs
- GeometryModel3D.cs
- Internal.cs
- Dispatcher.cs
- DataGridViewCellEventArgs.cs
- RegexBoyerMoore.cs
- InternalRelationshipCollection.cs
- CheckBoxList.cs
- _ScatterGatherBuffers.cs
- DashStyle.cs
- BitmapMetadata.cs
- GraphicsState.cs
- UIElementParagraph.cs
- ToolStripComboBox.cs
- DateBoldEvent.cs
- BindingValueChangedEventArgs.cs
- TextServicesLoader.cs
- ProtocolImporter.cs
- EventMap.cs
- SeekableReadStream.cs
- VirtualDirectoryMapping.cs
- ClientUrlResolverWrapper.cs
- DbConnectionInternal.cs
- DataBinder.cs
- ChannelServices.cs
- SizeF.cs