pos/is4c-nf/scale-drivers/drivers/NewMagellan/Newtonsoft.Json/Converters/XmlNodeConverter.cs
#region License
// Copyright (c) 2007 James Newton-King
//
// Permission is hereby granted, free of charge, to any person
// obtaining a copy of this software and associated documentation
// files (the "Software"), to deal in the Software without
// restriction, including without limitation the rights to use,
// copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the
// Software is furnished to do so, subject to the following
// conditions:
//
// The above copyright notice and this permission notice shall be
// included in all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
// OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
// NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
// HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
// WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
// FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
// OTHER DEALINGS IN THE SOFTWARE.
#endregion
#if !PORTABLE40
using System;
using System.Collections.Generic;
using System.Globalization;
using System.Xml;
#if !(NET20 || PORTABLE40)
using System.Xml.Linq;
#endif
using Newtonsoft.Json.Utilities;
#if NET20
using Newtonsoft.Json.Utilities.LinqBridge;
#else
using System.Linq;
#endif
namespace Newtonsoft.Json.Converters
{
#region XmlNodeWrappers
#if !NETFX_CORE && !PORTABLE && !PORTABLE40
internal class XmlDocumentWrapper : XmlNodeWrapper, IXmlDocument
{
private readonly XmlDocument _document;
public XmlDocumentWrapper(XmlDocument document)
: base(document)
{
_document = document;
}
public IXmlNode CreateComment(string data)
{
return new XmlNodeWrapper(_document.CreateComment(data));
}
public IXmlNode CreateTextNode(string text)
{
return new XmlNodeWrapper(_document.CreateTextNode(text));
}
public IXmlNode CreateCDataSection(string data)
{
return new XmlNodeWrapper(_document.CreateCDataSection(data));
}
public IXmlNode CreateWhitespace(string text)
{
return new XmlNodeWrapper(_document.CreateWhitespace(text));
}
public IXmlNode CreateSignificantWhitespace(string text)
{
return new XmlNodeWrapper(_document.CreateSignificantWhitespace(text));
}
public IXmlNode CreateXmlDeclaration(string version, string encoding, string standalone)
{
return new XmlDeclarationWrapper(_document.CreateXmlDeclaration(version, encoding, standalone));
}
public IXmlNode CreateXmlDocumentType(string name, string publicId, string systemId, string internalSubset)
{
return new XmlDocumentTypeWrapper(_document.CreateDocumentType(name, publicId, systemId, null));
}
public IXmlNode CreateProcessingInstruction(string target, string data)
{
return new XmlNodeWrapper(_document.CreateProcessingInstruction(target, data));
}
public IXmlElement CreateElement(string elementName)
{
return new XmlElementWrapper(_document.CreateElement(elementName));
}
public IXmlElement CreateElement(string qualifiedName, string namespaceUri)
{
return new XmlElementWrapper(_document.CreateElement(qualifiedName, namespaceUri));
}
public IXmlNode CreateAttribute(string name, string value)
{
XmlNodeWrapper attribute = new XmlNodeWrapper(_document.CreateAttribute(name));
attribute.Value = value;
return attribute;
}
public IXmlNode CreateAttribute(string qualifiedName, string namespaceUri, string value)
{
XmlNodeWrapper attribute = new XmlNodeWrapper(_document.CreateAttribute(qualifiedName, namespaceUri));
attribute.Value = value;
return attribute;
}
public IXmlElement DocumentElement
{
get
{
if (_document.DocumentElement == null)
return null;
return new XmlElementWrapper(_document.DocumentElement);
}
}
}
internal class XmlElementWrapper : XmlNodeWrapper, IXmlElement
{
private readonly XmlElement _element;
public XmlElementWrapper(XmlElement element)
: base(element)
{
_element = element;
}
public void SetAttributeNode(IXmlNode attribute)
{
XmlNodeWrapper xmlAttributeWrapper = (XmlNodeWrapper)attribute;
_element.SetAttributeNode((XmlAttribute)xmlAttributeWrapper.WrappedNode);
}
public string GetPrefixOfNamespace(string namespaceUri)
{
return _element.GetPrefixOfNamespace(namespaceUri);
}
public bool IsEmpty
{
get { return _element.IsEmpty; }
}
}
internal class XmlDeclarationWrapper : XmlNodeWrapper, IXmlDeclaration
{
private readonly XmlDeclaration _declaration;
public XmlDeclarationWrapper(XmlDeclaration declaration)
: base(declaration)
{
_declaration = declaration;
}
public string Version
{
get { return _declaration.Version; }
}
public string Encoding
{
get { return _declaration.Encoding; }
set { _declaration.Encoding = value; }
}
public string Standalone
{
get { return _declaration.Standalone; }
set { _declaration.Standalone = value; }
}
}
internal class XmlDocumentTypeWrapper : XmlNodeWrapper, IXmlDocumentType
{
private readonly XmlDocumentType _documentType;
public XmlDocumentTypeWrapper(XmlDocumentType documentType)
: base(documentType)
{
_documentType = documentType;
}
public string Name
{
get { return _documentType.Name; }
}
public string System
{
get { return _documentType.SystemId; }
}
public string Public
{
get { return _documentType.PublicId; }
}
public string InternalSubset
{
get { return _documentType.InternalSubset; }
}
public override string LocalName
{
get { return "DOCTYPE"; }
}
}
internal class XmlNodeWrapper : IXmlNode
{
private readonly XmlNode _node;
private IList<IXmlNode> _childNodes;
public XmlNodeWrapper(XmlNode node)
{
_node = node;
}
public object WrappedNode
{
get { return _node; }
}
public XmlNodeType NodeType
{
get { return _node.NodeType; }
}
public virtual string LocalName
{
get { return _node.LocalName; }
}
public IList<IXmlNode> ChildNodes
{
get
{
// childnodes is read multiple times
// cache results to prevent multiple reads which kills perf in large documents
if (_childNodes == null)
_childNodes = _node.ChildNodes.Cast<XmlNode>().Select(WrapNode).ToList();
return _childNodes;
}
}
internal static IXmlNode WrapNode(XmlNode node)
{
switch (node.NodeType)
{
case XmlNodeType.Element:
return new XmlElementWrapper((XmlElement) node);
case XmlNodeType.XmlDeclaration:
return new XmlDeclarationWrapper((XmlDeclaration) node);
case XmlNodeType.DocumentType:
return new XmlDocumentTypeWrapper((XmlDocumentType) node);
default:
return new XmlNodeWrapper(node);
}
}
public IList<IXmlNode> Attributes
{
get
{
if (_node.Attributes == null)
return null;
return _node.Attributes.Cast<XmlAttribute>().Select(WrapNode).ToList();
}
}
public IXmlNode ParentNode
{
get
{
XmlNode node = (_node is XmlAttribute)
? ((XmlAttribute) _node).OwnerElement
: _node.ParentNode;
if (node == null)
return null;
return WrapNode(node);
}
}
public string Value
{
get { return _node.Value; }
set { _node.Value = value; }
}
public IXmlNode AppendChild(IXmlNode newChild)
{
XmlNodeWrapper xmlNodeWrapper = (XmlNodeWrapper) newChild;
_node.AppendChild(xmlNodeWrapper._node);
_childNodes = null;
return newChild;
}
public string NamespaceUri
{
get { return _node.NamespaceURI; }
}
}
#endif
#endregion
#region Interfaces
internal interface IXmlDocument : IXmlNode
{
IXmlNode CreateComment(string text);
IXmlNode CreateTextNode(string text);
IXmlNode CreateCDataSection(string data);
IXmlNode CreateWhitespace(string text);
IXmlNode CreateSignificantWhitespace(string text);
IXmlNode CreateXmlDeclaration(string version, string encoding, string standalone);
IXmlNode CreateXmlDocumentType(string name, string publicId, string systemId, string internalSubset);
IXmlNode CreateProcessingInstruction(string target, string data);
IXmlElement CreateElement(string elementName);
IXmlElement CreateElement(string qualifiedName, string namespaceUri);
IXmlNode CreateAttribute(string name, string value);
IXmlNode CreateAttribute(string qualifiedName, string namespaceUri, string value);
IXmlElement DocumentElement { get; }
}
internal interface IXmlDeclaration : IXmlNode
{
string Version { get; }
string Encoding { get; set; }
string Standalone { get; set; }
}
internal interface IXmlDocumentType : IXmlNode
{
string Name { get; }
string System { get; }
string Public { get; }
string InternalSubset { get; }
}
internal interface IXmlElement : IXmlNode
{
void SetAttributeNode(IXmlNode attribute);
string GetPrefixOfNamespace(string namespaceUri);
bool IsEmpty { get; }
}
internal interface IXmlNode
{
XmlNodeType NodeType { get; }
string LocalName { get; }
IList<IXmlNode> ChildNodes { get; }
IList<IXmlNode> Attributes { get; }
IXmlNode ParentNode { get; }
string Value { get; set; }
IXmlNode AppendChild(IXmlNode newChild);
string NamespaceUri { get; }
object WrappedNode { get; }
}
#endregion
#region XNodeWrappers
#if !NET20
internal class XDeclarationWrapper : XObjectWrapper, IXmlDeclaration
{
internal XDeclaration Declaration { get; private set; }
public XDeclarationWrapper(XDeclaration declaration)
: base(null)
{
Declaration = declaration;
}
public override XmlNodeType NodeType
{
get { return XmlNodeType.XmlDeclaration; }
}
public string Version
{
get { return Declaration.Version; }
}
public string Encoding
{
get { return Declaration.Encoding; }
set { Declaration.Encoding = value; }
}
public string Standalone
{
get { return Declaration.Standalone; }
set { Declaration.Standalone = value; }
}
}
internal class XDocumentTypeWrapper : XObjectWrapper, IXmlDocumentType
{
private readonly XDocumentType _documentType;
public XDocumentTypeWrapper(XDocumentType documentType)
: base(documentType)
{
_documentType = documentType;
}
public string Name
{
get { return _documentType.Name; }
}
public string System
{
get { return _documentType.SystemId; }
}
public string Public
{
get { return _documentType.PublicId; }
}
public string InternalSubset
{
get { return _documentType.InternalSubset; }
}
public override string LocalName
{
get { return "DOCTYPE"; }
}
}
internal class XDocumentWrapper : XContainerWrapper, IXmlDocument
{
private XDocument Document
{
get { return (XDocument)WrappedNode; }
}
public XDocumentWrapper(XDocument document)
: base(document)
{
}
public override IList<IXmlNode> ChildNodes
{
get
{
IList<IXmlNode> childNodes = base.ChildNodes;
if (Document.Declaration != null && childNodes[0].NodeType != XmlNodeType.XmlDeclaration)
childNodes.Insert(0, new XDeclarationWrapper(Document.Declaration));
return childNodes;
}
}
public IXmlNode CreateComment(string text)
{
return new XObjectWrapper(new XComment(text));
}
public IXmlNode CreateTextNode(string text)
{
return new XObjectWrapper(new XText(text));
}
public IXmlNode CreateCDataSection(string data)
{
return new XObjectWrapper(new XCData(data));
}
public IXmlNode CreateWhitespace(string text)
{
return new XObjectWrapper(new XText(text));
}
public IXmlNode CreateSignificantWhitespace(string text)
{
return new XObjectWrapper(new XText(text));
}
public IXmlNode CreateXmlDeclaration(string version, string encoding, string standalone)
{
return new XDeclarationWrapper(new XDeclaration(version, encoding, standalone));
}
public IXmlNode CreateXmlDocumentType(string name, string publicId, string systemId, string internalSubset)
{
return new XDocumentTypeWrapper(new XDocumentType(name, publicId, systemId, internalSubset));
}
public IXmlNode CreateProcessingInstruction(string target, string data)
{
return new XProcessingInstructionWrapper(new XProcessingInstruction(target, data));
}
public IXmlElement CreateElement(string elementName)
{
return new XElementWrapper(new XElement(elementName));
}
public IXmlElement CreateElement(string qualifiedName, string namespaceUri)
{
string localName = MiscellaneousUtils.GetLocalName(qualifiedName);
return new XElementWrapper(new XElement(XName.Get(localName, namespaceUri)));
}
public IXmlNode CreateAttribute(string name, string value)
{
return new XAttributeWrapper(new XAttribute(name, value));
}
public IXmlNode CreateAttribute(string qualifiedName, string namespaceUri, string value)
{
string localName = MiscellaneousUtils.GetLocalName(qualifiedName);
return new XAttributeWrapper(new XAttribute(XName.Get(localName, namespaceUri), value));
}
public IXmlElement DocumentElement
{
get
{
if (Document.Root == null)
return null;
return new XElementWrapper(Document.Root);
}
}
public override IXmlNode AppendChild(IXmlNode newChild)
{
XDeclarationWrapper declarationWrapper = newChild as XDeclarationWrapper;
if (declarationWrapper != null)
{
Document.Declaration = declarationWrapper.Declaration;
return declarationWrapper;
}
else
{
return base.AppendChild(newChild);
}
}
}
internal class XTextWrapper : XObjectWrapper
{
private XText Text
{
get { return (XText)WrappedNode; }
}
public XTextWrapper(XText text)
: base(text)
{
}
public override string Value
{
get { return Text.Value; }
set { Text.Value = value; }
}
public override IXmlNode ParentNode
{
get
{
if (Text.Parent == null)
return null;
return XContainerWrapper.WrapNode(Text.Parent);
}
}
}
internal class XCommentWrapper : XObjectWrapper
{
private XComment Text
{
get { return (XComment)WrappedNode; }
}
public XCommentWrapper(XComment text)
: base(text)
{
}
public override string Value
{
get { return Text.Value; }
set { Text.Value = value; }
}
public override IXmlNode ParentNode
{
get
{
if (Text.Parent == null)
return null;
return XContainerWrapper.WrapNode(Text.Parent);
}
}
}
internal class XProcessingInstructionWrapper : XObjectWrapper
{
private XProcessingInstruction ProcessingInstruction
{
get { return (XProcessingInstruction)WrappedNode; }
}
public XProcessingInstructionWrapper(XProcessingInstruction processingInstruction)
: base(processingInstruction)
{
}
public override string LocalName
{
get { return ProcessingInstruction.Target; }
}
public override string Value
{
get { return ProcessingInstruction.Data; }
set { ProcessingInstruction.Data = value; }
}
}
internal class XContainerWrapper : XObjectWrapper
{
private IList<IXmlNode> _childNodes;
private XContainer Container
{
get { return (XContainer)WrappedNode; }
}
public XContainerWrapper(XContainer container)
: base(container)
{
}
public override IList<IXmlNode> ChildNodes
{
get
{
// childnodes is read multiple times
// cache results to prevent multiple reads which kills perf in large documents
if (_childNodes == null)
_childNodes = Container.Nodes().Select(WrapNode).ToList();
return _childNodes;
}
}
public override IXmlNode ParentNode
{
get
{
if (Container.Parent == null)
return null;
return WrapNode(Container.Parent);
}
}
internal static IXmlNode WrapNode(XObject node)
{
if (node is XDocument)
return new XDocumentWrapper((XDocument)node);
else if (node is XElement)
return new XElementWrapper((XElement)node);
else if (node is XContainer)
return new XContainerWrapper((XContainer)node);
else if (node is XProcessingInstruction)
return new XProcessingInstructionWrapper((XProcessingInstruction)node);
else if (node is XText)
return new XTextWrapper((XText)node);
else if (node is XComment)
return new XCommentWrapper((XComment)node);
else if (node is XAttribute)
return new XAttributeWrapper((XAttribute)node);
else if (node is XDocumentType)
return new XDocumentTypeWrapper((XDocumentType)node);
else
return new XObjectWrapper(node);
}
public override IXmlNode AppendChild(IXmlNode newChild)
{
Container.Add(newChild.WrappedNode);
_childNodes = null;
return newChild;
}
}
internal class XObjectWrapper : IXmlNode
{
private readonly XObject _xmlObject;
public XObjectWrapper(XObject xmlObject)
{
_xmlObject = xmlObject;
}
public object WrappedNode
{
get { return _xmlObject; }
}
public virtual XmlNodeType NodeType
{
get { return _xmlObject.NodeType; }
}
public virtual string LocalName
{
get { return null; }
}
public virtual IList<IXmlNode> ChildNodes
{
get { return new List<IXmlNode>(); }
}
public virtual IList<IXmlNode> Attributes
{
get { return null; }
}
public virtual IXmlNode ParentNode
{
get { return null; }
}
public virtual string Value
{
get { return null; }
set { throw new InvalidOperationException(); }
}
public virtual IXmlNode AppendChild(IXmlNode newChild)
{
throw new InvalidOperationException();
}
public virtual string NamespaceUri
{
get { return null; }
}
}
internal class XAttributeWrapper : XObjectWrapper
{
private XAttribute Attribute
{
get { return (XAttribute)WrappedNode; }
}
public XAttributeWrapper(XAttribute attribute)
: base(attribute)
{
}
public override string Value
{
get { return Attribute.Value; }
set { Attribute.Value = value; }
}
public override string LocalName
{
get { return Attribute.Name.LocalName; }
}
public override string NamespaceUri
{
get { return Attribute.Name.NamespaceName; }
}
public override IXmlNode ParentNode
{
get
{
if (Attribute.Parent == null)
return null;
return XContainerWrapper.WrapNode(Attribute.Parent);
}
}
}
internal class XElementWrapper : XContainerWrapper, IXmlElement
{
private XElement Element
{
get { return (XElement)WrappedNode; }
}
public XElementWrapper(XElement element)
: base(element)
{
}
public void SetAttributeNode(IXmlNode attribute)
{
XObjectWrapper wrapper = (XObjectWrapper)attribute;
Element.Add(wrapper.WrappedNode);
}
public override IList<IXmlNode> Attributes
{
get { return Element.Attributes().Select(a => new XAttributeWrapper(a)).Cast<IXmlNode>().ToList(); }
}
public override string Value
{
get { return Element.Value; }
set { Element.Value = value; }
}
public override string LocalName
{
get { return Element.Name.LocalName; }
}
public override string NamespaceUri
{
get { return Element.Name.NamespaceName; }
}
public string GetPrefixOfNamespace(string namespaceUri)
{
return Element.GetPrefixOfNamespace(namespaceUri);
}
public bool IsEmpty
{
get { return Element.IsEmpty; }
}
}
#endif
#endregion
/// <summary>
/// Converts XML to and from JSON.
/// </summary>
public class XmlNodeConverter : JsonConverter
{
private const string TextName = "#text";
private const string CommentName = "#comment";
private const string CDataName = "#cdata-section";
private const string WhitespaceName = "#whitespace";
private const string SignificantWhitespaceName = "#significant-whitespace";
private const string DeclarationName = "?xml";
private const string JsonNamespaceUri = "http://james.newtonking.com/projects/json";
/// <summary>
/// Gets or sets the name of the root element to insert when deserializing to XML if the JSON structure has produces multiple root elements.
/// </summary>
/// <value>The name of the deserialize root element.</value>
public string DeserializeRootElementName { get; set; }
/// <summary>
/// Gets or sets a flag to indicate whether to write the Json.NET array attribute.
/// This attribute helps preserve arrays when converting the written XML back to JSON.
/// </summary>
/// <value><c>true</c> if the array attibute is written to the XML; otherwise, <c>false</c>.</value>
public bool WriteArrayAttribute { get; set; }
/// <summary>
/// Gets or sets a value indicating whether to write the root JSON object.
/// </summary>
/// <value><c>true</c> if the JSON root object is omitted; otherwise, <c>false</c>.</value>
public bool OmitRootObject { get; set; }
#region Writing
/// <summary>
/// Writes the JSON representation of the object.
/// </summary>
/// <param name="writer">The <see cref="JsonWriter"/> to write to.</param>
/// <param name="serializer">The calling serializer.</param>
/// <param name="value">The value.</param>
public override void WriteJson(JsonWriter writer, object value, JsonSerializer serializer)
{
IXmlNode node = WrapXml(value);
XmlNamespaceManager manager = new XmlNamespaceManager(new NameTable());
PushParentNamespaces(node, manager);
if (!OmitRootObject)
writer.WriteStartObject();
SerializeNode(writer, node, manager, !OmitRootObject);
if (!OmitRootObject)
writer.WriteEndObject();
}
private IXmlNode WrapXml(object value)
{
#if !NET20
if (value is XObject)
return XContainerWrapper.WrapNode((XObject)value);
#endif
#if !(NETFX_CORE || PORTABLE)
if (value is XmlNode)
return XmlNodeWrapper.WrapNode((XmlNode)value);
#endif
throw new ArgumentException("Value must be an XML object.", "value");
}
private void PushParentNamespaces(IXmlNode node, XmlNamespaceManager manager)
{
List<IXmlNode> parentElements = null;
IXmlNode parent = node;
while ((parent = parent.ParentNode) != null)
{
if (parent.NodeType == XmlNodeType.Element)
{
if (parentElements == null)
parentElements = new List<IXmlNode>();
parentElements.Add(parent);
}
}
if (parentElements != null)
{
parentElements.Reverse();
foreach (IXmlNode parentElement in parentElements)
{
manager.PushScope();
foreach (IXmlNode attribute in parentElement.Attributes)
{
if (attribute.NamespaceUri == "http://www.w3.org/2000/xmlns/" && attribute.LocalName != "xmlns")
manager.AddNamespace(attribute.LocalName, attribute.Value);
}
}
}
}
private string ResolveFullName(IXmlNode node, XmlNamespaceManager manager)
{
string prefix = (node.NamespaceUri == null || (node.LocalName == "xmlns" && node.NamespaceUri == "http://www.w3.org/2000/xmlns/"))
? null
: manager.LookupPrefix(node.NamespaceUri);
if (!string.IsNullOrEmpty(prefix))
return prefix + ":" + node.LocalName;
else
return node.LocalName;
}
private string GetPropertyName(IXmlNode node, XmlNamespaceManager manager)
{
switch (node.NodeType)
{
case XmlNodeType.Attribute:
if (node.NamespaceUri == JsonNamespaceUri)
return "$" + node.LocalName;
else
return "@" + ResolveFullName(node, manager);
case XmlNodeType.CDATA:
return CDataName;
case XmlNodeType.Comment:
return CommentName;
case XmlNodeType.Element:
return ResolveFullName(node, manager);
case XmlNodeType.ProcessingInstruction:
return "?" + ResolveFullName(node, manager);
case XmlNodeType.DocumentType:
return "!" + ResolveFullName(node, manager);
case XmlNodeType.XmlDeclaration:
return DeclarationName;
case XmlNodeType.SignificantWhitespace:
return SignificantWhitespaceName;
case XmlNodeType.Text:
return TextName;
case XmlNodeType.Whitespace:
return WhitespaceName;
default:
throw new JsonSerializationException("Unexpected XmlNodeType when getting node name: " + node.NodeType);
}
}
private bool IsArray(IXmlNode node)
{
IXmlNode jsonArrayAttribute = (node.Attributes != null)
? node.Attributes.SingleOrDefault(a => a.LocalName == "Array" && a.NamespaceUri == JsonNamespaceUri)
: null;
return (jsonArrayAttribute != null && XmlConvert.ToBoolean(jsonArrayAttribute.Value));
}
private void SerializeGroupedNodes(JsonWriter writer, IXmlNode node, XmlNamespaceManager manager, bool writePropertyName)
{
// group nodes together by name
Dictionary<string, List<IXmlNode>> nodesGroupedByName = new Dictionary<string, List<IXmlNode>>();
for (int i = 0; i < node.ChildNodes.Count; i++)
{
IXmlNode childNode = node.ChildNodes[i];
string nodeName = GetPropertyName(childNode, manager);
List<IXmlNode> nodes;
if (!nodesGroupedByName.TryGetValue(nodeName, out nodes))
{
nodes = new List<IXmlNode>();
nodesGroupedByName.Add(nodeName, nodes);
}
nodes.Add(childNode);
}
// loop through grouped nodes. write single name instances as normal,
// write multiple names together in an array
foreach (KeyValuePair<string, List<IXmlNode>> nodeNameGroup in nodesGroupedByName)
{
List<IXmlNode> groupedNodes = nodeNameGroup.Value;
bool writeArray;
if (groupedNodes.Count == 1)
{
writeArray = IsArray(groupedNodes[0]);
}
else
{
writeArray = true;
}
if (!writeArray)
{
SerializeNode(writer, groupedNodes[0], manager, writePropertyName);
}
else
{
string elementNames = nodeNameGroup.Key;
if (writePropertyName)
writer.WritePropertyName(elementNames);
writer.WriteStartArray();
for (int i = 0; i < groupedNodes.Count; i++)
{
SerializeNode(writer, groupedNodes[i], manager, false);
}
writer.WriteEndArray();
}
}
}
private void SerializeNode(JsonWriter writer, IXmlNode node, XmlNamespaceManager manager, bool writePropertyName)
{
switch (node.NodeType)
{
case XmlNodeType.Document:
case XmlNodeType.DocumentFragment:
SerializeGroupedNodes(writer, node, manager, writePropertyName);
break;
case XmlNodeType.Element:
if (IsArray(node) && node.ChildNodes.All(n => n.LocalName == node.LocalName) && node.ChildNodes.Count > 0)
{
SerializeGroupedNodes(writer, node, manager, false);
}
else
{
manager.PushScope();
foreach (IXmlNode attribute in node.Attributes)
{
if (attribute.NamespaceUri == "http://www.w3.org/2000/xmlns/")
{
string namespacePrefix = (attribute.LocalName != "xmlns")
? attribute.LocalName
: string.Empty;
string namespaceUri = attribute.Value;
manager.AddNamespace(namespacePrefix, namespaceUri);
}
}
if (writePropertyName)
writer.WritePropertyName(GetPropertyName(node, manager));
if (!ValueAttributes(node.Attributes).Any() && node.ChildNodes.Count == 1
&& node.ChildNodes[0].NodeType == XmlNodeType.Text)
{
// write elements with a single text child as a name value pair
writer.WriteValue(node.ChildNodes[0].Value);
}
else if (node.ChildNodes.Count == 0 && CollectionUtils.IsNullOrEmpty(node.Attributes))
{
IXmlElement element = (IXmlElement)node;
// empty element
if (element.IsEmpty)
writer.WriteNull();
else
writer.WriteValue(string.Empty);
}
else
{
writer.WriteStartObject();
for (int i = 0; i < node.Attributes.Count; i++)
{
SerializeNode(writer, node.Attributes[i], manager, true);
}
SerializeGroupedNodes(writer, node, manager, true);
writer.WriteEndObject();
}
manager.PopScope();
}
break;
case XmlNodeType.Comment:
if (writePropertyName)
writer.WriteComment(node.Value);
break;
case XmlNodeType.Attribute:
case XmlNodeType.Text:
case XmlNodeType.CDATA:
case XmlNodeType.ProcessingInstruction:
case XmlNodeType.Whitespace:
case XmlNodeType.SignificantWhitespace:
if (node.NamespaceUri == "http://www.w3.org/2000/xmlns/" && node.Value == JsonNamespaceUri)
return;
if (node.NamespaceUri == JsonNamespaceUri)
{
if (node.LocalName == "Array")
return;
}
if (writePropertyName)
writer.WritePropertyName(GetPropertyName(node, manager));
writer.WriteValue(node.Value);
break;
case XmlNodeType.XmlDeclaration:
IXmlDeclaration declaration = (IXmlDeclaration)node;
writer.WritePropertyName(GetPropertyName(node, manager));
writer.WriteStartObject();
if (!string.IsNullOrEmpty(declaration.Version))
{
writer.WritePropertyName("@version");
writer.WriteValue(declaration.Version);
}
if (!string.IsNullOrEmpty(declaration.Encoding))
{
writer.WritePropertyName("@encoding");
writer.WriteValue(declaration.Encoding);
}
if (!string.IsNullOrEmpty(declaration.Standalone))
{
writer.WritePropertyName("@standalone");
writer.WriteValue(declaration.Standalone);
}
writer.WriteEndObject();
break;
case XmlNodeType.DocumentType:
IXmlDocumentType documentType = (IXmlDocumentType)node;
writer.WritePropertyName(GetPropertyName(node, manager));
writer.WriteStartObject();
if (!string.IsNullOrEmpty(documentType.Name))
{
writer.WritePropertyName("@name");
writer.WriteValue(documentType.Name);
}
if (!string.IsNullOrEmpty(documentType.Public))
{
writer.WritePropertyName("@public");
writer.WriteValue(documentType.Public);
}
if (!string.IsNullOrEmpty(documentType.System))
{
writer.WritePropertyName("@system");
writer.WriteValue(documentType.System);
}
if (!string.IsNullOrEmpty(documentType.InternalSubset))
{
writer.WritePropertyName("@internalSubset");
writer.WriteValue(documentType.InternalSubset);
}
writer.WriteEndObject();
break;
default:
throw new JsonSerializationException("Unexpected XmlNodeType when serializing nodes: " + node.NodeType);
}
}
#endregion
#region Reading
/// <summary>
/// Reads the JSON representation of the object.
/// </summary>
/// <param name="reader">The <see cref="JsonReader"/> to read from.</param>
/// <param name="objectType">Type of the object.</param>
/// <param name="existingValue">The existing value of object being read.</param>
/// <param name="serializer">The calling serializer.</param>
/// <returns>The object value.</returns>
public override object ReadJson(JsonReader reader, Type objectType, object existingValue, JsonSerializer serializer)
{
if (reader.TokenType == JsonToken.Null)
return null;
XmlNamespaceManager manager = new XmlNamespaceManager(new NameTable());
IXmlDocument document = null;
IXmlNode rootNode = null;
#if !NET20
if (typeof(XObject).IsAssignableFrom(objectType))
{
if (objectType != typeof(XDocument) && objectType != typeof(XElement))
throw new JsonSerializationException("XmlNodeConverter only supports deserializing XDocument or XElement.");
XDocument d = new XDocument();
document = new XDocumentWrapper(d);
rootNode = document;
}
#endif
#if !(NETFX_CORE || PORTABLE)
if (typeof(XmlNode).IsAssignableFrom(objectType))
{
if (objectType != typeof(XmlDocument))
throw new JsonSerializationException("XmlNodeConverter only supports deserializing XmlDocuments");
XmlDocument d = new XmlDocument();
// prevent http request when resolving any DTD references
d.XmlResolver = null;
document = new XmlDocumentWrapper(d);
rootNode = document;
}
#endif
if (document == null || rootNode == null)
throw new JsonSerializationException("Unexpected type when converting XML: " + objectType);
if (reader.TokenType != JsonToken.StartObject)
throw new JsonSerializationException("XmlNodeConverter can only convert JSON that begins with an object.");
if (!string.IsNullOrEmpty(DeserializeRootElementName))
{
//rootNode = document.CreateElement(DeserializeRootElementName);
//document.AppendChild(rootNode);
ReadElement(reader, document, rootNode, DeserializeRootElementName, manager);
}
else
{
reader.Read();
DeserializeNode(reader, document, manager, rootNode);
}
#if !NET20
if (objectType == typeof(XElement))
{
XElement element = (XElement)document.DocumentElement.WrappedNode;
element.Remove();
return element;
}
#endif
return document.WrappedNode;
}
private void DeserializeValue(JsonReader reader, IXmlDocument document, XmlNamespaceManager manager, string propertyName, IXmlNode currentNode)
{
switch (propertyName)
{
case TextName:
currentNode.AppendChild(document.CreateTextNode(reader.Value.ToString()));
break;
case CDataName:
currentNode.AppendChild(document.CreateCDataSection(reader.Value.ToString()));
break;
case WhitespaceName:
currentNode.AppendChild(document.CreateWhitespace(reader.Value.ToString()));
break;
case SignificantWhitespaceName:
currentNode.AppendChild(document.CreateSignificantWhitespace(reader.Value.ToString()));
break;
default:
// processing instructions and the xml declaration start with ?
if (!string.IsNullOrEmpty(propertyName) && propertyName[0] == '?')
{
CreateInstruction(reader, document, currentNode, propertyName);
}
else if (string.Equals(propertyName, "!DOCTYPE", StringComparison.OrdinalIgnoreCase))
{
CreateDocumentType(reader, document, currentNode);
}
else
{
if (reader.TokenType == JsonToken.StartArray)
{
// handle nested arrays
ReadArrayElements(reader, document, propertyName, currentNode, manager);
return;
}
// have to wait until attributes have been parsed before creating element
// attributes may contain namespace info used by the element
ReadElement(reader, document, currentNode, propertyName, manager);
}
break;
}
}
private void ReadElement(JsonReader reader, IXmlDocument document, IXmlNode currentNode, string propertyName, XmlNamespaceManager manager)
{
if (string.IsNullOrEmpty(propertyName))
throw new JsonSerializationException("XmlNodeConverter cannot convert JSON with an empty property name to XML.");
Dictionary<string, string> attributeNameValues = ReadAttributeElements(reader, manager);
string elementPrefix = MiscellaneousUtils.GetPrefix(propertyName);
if (propertyName.StartsWith('@'))
{
string attributeName = propertyName.Substring(1);
string attributeValue = reader.Value.ToString();
string attributePrefix = MiscellaneousUtils.GetPrefix(attributeName);
IXmlNode attribute = (!string.IsNullOrEmpty(attributePrefix))
? document.CreateAttribute(attributeName, manager.LookupNamespace(attributePrefix), attributeValue)
: document.CreateAttribute(attributeName, attributeValue);
((IXmlElement)currentNode).SetAttributeNode(attribute);
}
else
{
IXmlElement element = CreateElement(propertyName, document, elementPrefix, manager);
currentNode.AppendChild(element);
// add attributes to newly created element
foreach (KeyValuePair<string, string> nameValue in attributeNameValues)
{
string attributePrefix = MiscellaneousUtils.GetPrefix(nameValue.Key);
IXmlNode attribute = (!string.IsNullOrEmpty(attributePrefix))
? document.CreateAttribute(nameValue.Key, manager.LookupNamespace(attributePrefix), nameValue.Value)
: document.CreateAttribute(nameValue.Key, nameValue.Value);
element.SetAttributeNode(attribute);
}
if (reader.TokenType == JsonToken.String
|| reader.TokenType == JsonToken.Integer
|| reader.TokenType == JsonToken.Float
|| reader.TokenType == JsonToken.Boolean
|| reader.TokenType == JsonToken.Date)
{
element.AppendChild(document.CreateTextNode(ConvertTokenToXmlValue(reader)));
}
else if (reader.TokenType == JsonToken.Null)
{
// empty element. do nothing
}
else
{
// finished element will have no children to deserialize
if (reader.TokenType != JsonToken.EndObject)
{
manager.PushScope();
DeserializeNode(reader, document, manager, element);
manager.PopScope();
}
manager.RemoveNamespace(string.Empty, manager.DefaultNamespace);
}
}
}
private string ConvertTokenToXmlValue(JsonReader reader)
{
if (reader.TokenType == JsonToken.String)
{
return reader.Value.ToString();
}
else if (reader.TokenType == JsonToken.Integer)
{
return XmlConvert.ToString(Convert.ToInt64(reader.Value, CultureInfo.InvariantCulture));
}
else if (reader.TokenType == JsonToken.Float)
{
if (reader.Value is decimal)
return XmlConvert.ToString((decimal)reader.Value);
if (reader.Value is float)
return XmlConvert.ToString((float)reader.Value);
return XmlConvert.ToString(Convert.ToDouble(reader.Value, CultureInfo.InvariantCulture));
}
else if (reader.TokenType == JsonToken.Boolean)
{
return XmlConvert.ToString(Convert.ToBoolean(reader.Value, CultureInfo.InvariantCulture));
}
else if (reader.TokenType == JsonToken.Date)
{
#if !NET20
if (reader.Value is DateTimeOffset)
return XmlConvert.ToString((DateTimeOffset)reader.Value);
#endif
DateTime d = Convert.ToDateTime(reader.Value, CultureInfo.InvariantCulture);
#if !(NETFX_CORE || PORTABLE)
return XmlConvert.ToString(d, DateTimeUtils.ToSerializationMode(d.Kind));
#else
return XmlConvert.ToString(d);
#endif
}
else if (reader.TokenType == JsonToken.Null)
{
return null;
}
else
{
throw JsonSerializationException.Create(reader, "Cannot get an XML string value from token type '{0}'.".FormatWith(CultureInfo.InvariantCulture, reader.TokenType));
}
}
private void ReadArrayElements(JsonReader reader, IXmlDocument document, string propertyName, IXmlNode currentNode, XmlNamespaceManager manager)
{
string elementPrefix = MiscellaneousUtils.GetPrefix(propertyName);
IXmlElement nestedArrayElement = CreateElement(propertyName, document, elementPrefix, manager);
currentNode.AppendChild(nestedArrayElement);
int count = 0;
while (reader.Read() && reader.TokenType != JsonToken.EndArray)
{
DeserializeValue(reader, document, manager, propertyName, nestedArrayElement);
count++;
}
if (WriteArrayAttribute)
{
AddJsonArrayAttribute(nestedArrayElement, document);
}
if (count == 1 && WriteArrayAttribute)
{
IXmlElement arrayElement = nestedArrayElement.ChildNodes.OfType<IXmlElement>().Single(n => n.LocalName == propertyName);
AddJsonArrayAttribute(arrayElement, document);
}
}
private void AddJsonArrayAttribute(IXmlElement element, IXmlDocument document)
{
element.SetAttributeNode(document.CreateAttribute("json:Array", JsonNamespaceUri, "true"));
#if !NET20
// linq to xml doesn't automatically include prefixes via the namespace manager
if (element is XElementWrapper)
{
if (element.GetPrefixOfNamespace(JsonNamespaceUri) == null)
{
element.SetAttributeNode(document.CreateAttribute("xmlns:json", "http://www.w3.org/2000/xmlns/", JsonNamespaceUri));
}
}
#endif
}
private Dictionary<string, string> ReadAttributeElements(JsonReader reader, XmlNamespaceManager manager)
{
Dictionary<string, string> attributeNameValues = new Dictionary<string, string>();
bool finishedAttributes = false;
bool finishedElement = false;
// a string token means the element only has a single text child
if (reader.TokenType != JsonToken.String
&& reader.TokenType != JsonToken.Null
&& reader.TokenType != JsonToken.Boolean
&& reader.TokenType != JsonToken.Integer
&& reader.TokenType != JsonToken.Float
&& reader.TokenType != JsonToken.Date
&& reader.TokenType != JsonToken.StartConstructor)
{
// read properties until first non-attribute is encountered
while (!finishedAttributes && !finishedElement && reader.Read())
{
switch (reader.TokenType)
{
case JsonToken.PropertyName:
string attributeName = reader.Value.ToString();
if (!string.IsNullOrEmpty(attributeName))
{
char firstChar = attributeName[0];
string attributeValue;
switch (firstChar)
{
case '@':
attributeName = attributeName.Substring(1);
reader.Read();
attributeValue = ConvertTokenToXmlValue(reader);
attributeNameValues.Add(attributeName, attributeValue);
string namespacePrefix;
if (IsNamespaceAttribute(attributeName, out namespacePrefix))
{
manager.AddNamespace(namespacePrefix, attributeValue);
}
break;
case '$':
attributeName = attributeName.Substring(1);
reader.Read();
attributeValue = reader.Value.ToString();
// check that JsonNamespaceUri is in scope
// if it isn't then add it to document and namespace manager
string jsonPrefix = manager.LookupPrefix(JsonNamespaceUri);
if (jsonPrefix == null)
{
// ensure that the prefix used is free
int? i = null;
while (manager.LookupNamespace("json" + i) != null)
{
i = i.GetValueOrDefault() + 1;
}
jsonPrefix = "json" + i;
attributeNameValues.Add("xmlns:" + jsonPrefix, JsonNamespaceUri);
manager.AddNamespace(jsonPrefix, JsonNamespaceUri);
}
attributeNameValues.Add(jsonPrefix + ":" + attributeName, attributeValue);
break;
default:
finishedAttributes = true;
break;
}
}
else
{
finishedAttributes = true;
}
break;
case JsonToken.EndObject:
finishedElement = true;
break;
case JsonToken.Comment:
finishedElement = true;
break;
default:
throw new JsonSerializationException("Unexpected JsonToken: " + reader.TokenType);
}
}
}
return attributeNameValues;
}
private void CreateInstruction(JsonReader reader, IXmlDocument document, IXmlNode currentNode, string propertyName)
{
if (propertyName == DeclarationName)
{
string version = null;
string encoding = null;
string standalone = null;
while (reader.Read() && reader.TokenType != JsonToken.EndObject)
{
switch (reader.Value.ToString())
{
case "@version":
reader.Read();
version = reader.Value.ToString();
break;
case "@encoding":
reader.Read();
encoding = reader.Value.ToString();
break;
case "@standalone":
reader.Read();
standalone = reader.Value.ToString();
break;
default:
throw new JsonSerializationException("Unexpected property name encountered while deserializing XmlDeclaration: " + reader.Value);
}
}
IXmlNode declaration = document.CreateXmlDeclaration(version, encoding, standalone);
currentNode.AppendChild(declaration);
}
else
{
IXmlNode instruction = document.CreateProcessingInstruction(propertyName.Substring(1), reader.Value.ToString());
currentNode.AppendChild(instruction);
}
}
private void CreateDocumentType(JsonReader reader, IXmlDocument document, IXmlNode currentNode)
{
string name = null;
string publicId = null;
string systemId = null;
string internalSubset = null;
while (reader.Read() && reader.TokenType != JsonToken.EndObject)
{
switch (reader.Value.ToString())
{
case "@name":
reader.Read();
name = reader.Value.ToString();
break;
case "@public":
reader.Read();
publicId = reader.Value.ToString();
break;
case "@system":
reader.Read();
systemId = reader.Value.ToString();
break;
case "@internalSubset":
reader.Read();
internalSubset = reader.Value.ToString();
break;
default:
throw new JsonSerializationException("Unexpected property name encountered while deserializing XmlDeclaration: " + reader.Value);
}
}
IXmlNode documentType = document.CreateXmlDocumentType(name, publicId, systemId, internalSubset);
currentNode.AppendChild(documentType);
}
private IXmlElement CreateElement(string elementName, IXmlDocument document, string elementPrefix, XmlNamespaceManager manager)
{
string ns = string.IsNullOrEmpty(elementPrefix) ? manager.DefaultNamespace : manager.LookupNamespace(elementPrefix);
IXmlElement element = (!string.IsNullOrEmpty(ns)) ? document.CreateElement(elementName, ns) : document.CreateElement(elementName);
return element;
}
private void DeserializeNode(JsonReader reader, IXmlDocument document, XmlNamespaceManager manager, IXmlNode currentNode)
{
do
{
switch (reader.TokenType)
{
case JsonToken.PropertyName:
if (currentNode.NodeType == XmlNodeType.Document && document.DocumentElement != null)
throw new JsonSerializationException("JSON root object has multiple properties. The root object must have a single property in order to create a valid XML document. Consider specifing a DeserializeRootElementName.");
string propertyName = reader.Value.ToString();
reader.Read();
if (reader.TokenType == JsonToken.StartArray)
{
int count = 0;
while (reader.Read() && reader.TokenType != JsonToken.EndArray)
{
DeserializeValue(reader, document, manager, propertyName, currentNode);
count++;
}
if (count == 1 && WriteArrayAttribute)
{
IXmlElement arrayElement = currentNode.ChildNodes.OfType<IXmlElement>().Single(n => n.LocalName == propertyName);
AddJsonArrayAttribute(arrayElement, document);
}
}
else
{
DeserializeValue(reader, document, manager, propertyName, currentNode);
}
break;
case JsonToken.StartConstructor:
string constructorName = reader.Value.ToString();
while (reader.Read() && reader.TokenType != JsonToken.EndConstructor)
{
DeserializeValue(reader, document, manager, constructorName, currentNode);
}
break;
case JsonToken.Comment:
currentNode.AppendChild(document.CreateComment((string)reader.Value));
break;
case JsonToken.EndObject:
case JsonToken.EndArray:
return;
default:
throw new JsonSerializationException("Unexpected JsonToken when deserializing node: " + reader.TokenType);
}
} while (reader.TokenType == JsonToken.PropertyName || reader.Read());
// don't read if current token is a property. token was already read when parsing element attributes
}
/// <summary>
/// Checks if the attributeName is a namespace attribute.
/// </summary>
/// <param name="attributeName">Attribute name to test.</param>
/// <param name="prefix">The attribute name prefix if it has one, otherwise an empty string.</param>
/// <returns>True if attribute name is for a namespace attribute, otherwise false.</returns>
private bool IsNamespaceAttribute(string attributeName, out string prefix)
{
if (attributeName.StartsWith("xmlns", StringComparison.Ordinal))
{
if (attributeName.Length == 5)
{
prefix = string.Empty;
return true;
}
else if (attributeName[5] == ':')
{
prefix = attributeName.Substring(6, attributeName.Length - 6);
return true;
}
}
prefix = null;
return false;
}
private IEnumerable<IXmlNode> ValueAttributes(IEnumerable<IXmlNode> c)
{
return c.Where(a => a.NamespaceUri != JsonNamespaceUri);
}
#endregion
/// <summary>
/// Determines whether this instance can convert the specified value type.
/// </summary>
/// <param name="valueType">Type of the value.</param>
/// <returns>
/// <c>true</c> if this instance can convert the specified value type; otherwise, <c>false</c>.
/// </returns>
public override bool CanConvert(Type valueType)
{
#if !NET20
if (typeof(XObject).IsAssignableFrom(valueType))
return true;
#endif
#if !(NETFX_CORE || PORTABLE)
if (typeof(XmlNode).IsAssignableFrom(valueType))
return true;
#endif
return false;
}
}
}
#endif