Code:
/ WCF / WCF / 3.5.30729.1 / untmp / Orcas / SP / ndp / cdf / src / NetFx35 / System.ServiceModel.Web / System / ServiceModel / Syndication / XmlSyndicationContent.cs / 1 / XmlSyndicationContent.cs
//------------------------------------------------------------ // Copyright (c) Microsoft Corporation. All rights reserved. //----------------------------------------------------------- namespace System.ServiceModel.Syndication { using System; using System.Text; using System.Xml; using System.Xml.Schema; using System.Runtime.Serialization; using System.Xml.Serialization; using System.Diagnostics.CodeAnalysis; using System.ServiceModel.Web; // NOTE: This class implements Clone so if you add any members, please update the copy ctor public class XmlSyndicationContent : SyndicationContent { XmlBuffer contentBuffer; SyndicationElementExtension extension; string type; // Saves the element in the reader to the buffer (attributes preserved) // Type is populated from type attribute on reader // Reader must be positioned at an element public XmlSyndicationContent(XmlReader reader) { if (reader == null) { throw DiagnosticUtility.ExceptionUtility.ThrowHelperArgumentNull("reader"); } SyndicationFeedFormatter.MoveToStartElement(reader); if (reader.HasAttributes) { while (reader.MoveToNextAttribute()) { string name = reader.LocalName; string ns = reader.NamespaceURI; string value = reader.Value; if (name == Atom10Constants.TypeTag && ns == string.Empty) { this.type = value; } else if (!FeedUtils.IsXmlns(name, ns)) { base.AttributeExtensions.Add(new XmlQualifiedName(name, ns), value); } } reader.MoveToElement(); } this.contentBuffer = new XmlBuffer(int.MaxValue); using (XmlDictionaryWriter writer = this.contentBuffer.OpenSection(XmlDictionaryReaderQuotas.Max)) { writer.WriteNode(reader, false); } contentBuffer.CloseSection(); contentBuffer.Close(); } public XmlSyndicationContent(string type, object dataContractExtension, XmlObjectSerializer dataContractSerializer) { this.type = string.IsNullOrEmpty(type) ? Atom10Constants.XmlMediaType : type; this.extension = new SyndicationElementExtension(dataContractExtension, dataContractSerializer); } public XmlSyndicationContent(string type, object xmlSerializerExtension, XmlSerializer serializer) { this.type = string.IsNullOrEmpty(type) ? Atom10Constants.XmlMediaType : type; this.extension = new SyndicationElementExtension(xmlSerializerExtension, serializer); } public XmlSyndicationContent(string type, SyndicationElementExtension extension) { if (extension == null) { throw DiagnosticUtility.ExceptionUtility.ThrowHelperArgumentNull("extension"); } this.type = string.IsNullOrEmpty(type) ? Atom10Constants.XmlMediaType : type; this.extension = extension; } protected XmlSyndicationContent(XmlSyndicationContent source) : base(source) { if (source == null) { throw DiagnosticUtility.ExceptionUtility.ThrowHelperArgumentNull("source"); } this.contentBuffer = source.contentBuffer; this.extension = source.extension; this.type = source.type; } public SyndicationElementExtension Extension { get { return this.extension; } } public override string Type { get { return this.type; } } public override SyndicationContent Clone() { return new XmlSyndicationContent(this); } public XmlDictionaryReader GetReaderAtContent() { EnsureContentBuffer(); return this.contentBuffer.GetReader(0); } public TContent ReadContent() { return ReadContent ((DataContractSerializer) null); } public TContent ReadContent (XmlObjectSerializer dataContractSerializer) { if (dataContractSerializer == null) { dataContractSerializer = new DataContractSerializer(typeof(TContent)); } if (this.extension != null) { return this.extension.GetObject (dataContractSerializer); } else { Fx.Assert(this.contentBuffer != null, "contentBuffer cannot be null"); using (XmlDictionaryReader reader = this.contentBuffer.GetReader(0)) { // skip past the content element reader.ReadStartElement(); return (TContent) dataContractSerializer.ReadObject(reader, false); } } } public TContent ReadContent (XmlSerializer serializer) { if (serializer == null) { serializer = new XmlSerializer(typeof(TContent)); } if (this.extension != null) { return this.extension.GetObject (serializer); } else { Fx.Assert(this.contentBuffer != null, "contentBuffer cannot be null"); using (XmlDictionaryReader reader = this.contentBuffer.GetReader(0)) { // skip past the content element reader.ReadStartElement(); return (TContent) serializer.Deserialize(reader); } } } // does not write start element or type attribute, writes other attributes and rest of content protected override void WriteContentsTo(XmlWriter writer) { if (writer == null) { throw DiagnosticUtility.ExceptionUtility.ThrowHelperArgumentNull("writer"); } if (this.extension != null) { this.extension.WriteTo(writer); } else if (this.contentBuffer != null) { using (XmlDictionaryReader reader = this.contentBuffer.GetReader(0)) { reader.MoveToStartElement(); if (!reader.IsEmptyElement) { reader.ReadStartElement(); while (reader.Depth >= 1 && reader.ReadState == ReadState.Interactive) { writer.WriteNode(reader, false); } } } } } void EnsureContentBuffer() { if (this.contentBuffer == null) { XmlBuffer tmp = new XmlBuffer(int.MaxValue); using (XmlDictionaryWriter writer = tmp.OpenSection(XmlDictionaryReaderQuotas.Max)) { this.WriteTo(writer, Atom10Constants.ContentTag, Atom10Constants.Atom10Namespace); } tmp.CloseSection(); tmp.Close(); this.contentBuffer = tmp; } } } } // File provided for Reference Use Only by Microsoft Corporation (c) 2007. // Copyright (c) Microsoft Corporation. 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