mcs/class/referencesource/System.Runtime.Serialization/System/Runtime/Serialization/XmlSerializableServices.cs

   1 //-----------------------------------------------------------------------------
   2 // Copyright (c) Microsoft Corporation.  All rights reserved.
   3 //-----------------------------------------------------------------------------
   4
   5 namespace System.Runtime.Serialization
   6 {
   7     using System.Collections.Generic;
   8     using System.Xml;
   9     using System.Xml.Schema;
  10
  11     public static class XmlSerializableServices
  12     {
  13         [Fx.Tag.SecurityNote(Miscellaneous = "RequiresReview - Static fields are marked SecurityCritical or readonly to prevent"
  14             + " data from being modified or leaked to other components in appdomain.")]
  15         internal static readonly string ReadNodesMethodName = "ReadNodes";
  16         public static XmlNode[] ReadNodes(XmlReader xmlReader)
  17         {
  18             if (xmlReader == null)
  19                 throw System.Runtime.Serialization.DiagnosticUtility.ExceptionUtility.ThrowHelperArgumentNull("xmlReader");
  20             XmlDocument doc = new XmlDocument();
  21             List<XmlNode> nodeList = new List<XmlNode>();
  22             if (xmlReader.MoveToFirstAttribute())
  23             {
  24                 do
  25                 {
  26                     if (IsValidAttribute(xmlReader))
  27                     {
  28                         XmlNode node = doc.ReadNode(xmlReader);
  29                         if (node == null)
  30                             throw System.Runtime.Serialization.DiagnosticUtility.ExceptionUtility.ThrowHelperError(XmlObjectSerializer.CreateSerializationException(SR.GetString(SR.UnexpectedEndOfFile)));
  31                         nodeList.Add(node);
  32                     }
  33                 } while (xmlReader.MoveToNextAttribute());
  34             }
  35             xmlReader.MoveToElement();
  36             if (!xmlReader.IsEmptyElement)
  37             {
  38                 int startDepth = xmlReader.Depth;
  39                 xmlReader.Read();
  40                 while (xmlReader.Depth > startDepth && xmlReader.NodeType != XmlNodeType.EndElement)
  41                 {
  42                     XmlNode node = doc.ReadNode(xmlReader);
  43                     if (node == null)
  44                         throw System.Runtime.Serialization.DiagnosticUtility.ExceptionUtility.ThrowHelperError(XmlObjectSerializer.CreateSerializationException(SR.GetString(SR.UnexpectedEndOfFile)));
  45                     nodeList.Add(node);
  46                 }
  47             }
  48             return nodeList.ToArray();
  49         }
  50
  51         private static bool IsValidAttribute(XmlReader xmlReader)
  52         {
  53             return xmlReader.NamespaceURI != Globals.SerializationNamespace &&
  54                                    xmlReader.NamespaceURI != Globals.SchemaInstanceNamespace &&
  55                                    xmlReader.Prefix != "xmlns" &&
  56                                    xmlReader.LocalName != "xmlns";
  57         }
  58
  59         internal static string WriteNodesMethodName = "WriteNodes";
  60         public static void WriteNodes(XmlWriter xmlWriter, XmlNode[] nodes)
  61         {
  62             if (xmlWriter == null)
  63                 throw System.Runtime.Serialization.DiagnosticUtility.ExceptionUtility.ThrowHelperArgumentNull("xmlWriter");
  64             if (nodes != null)
  65                 for (int i = 0; i < nodes.Length; i++)
  66                     if (nodes[i] != null)
  67                         nodes[i].WriteTo(xmlWriter);
  68         }
  69
  70 #if !MOBILE
  71         internal static string AddDefaultSchemaMethodName = "AddDefaultSchema";
  72         public static void AddDefaultSchema(XmlSchemaSet schemas, XmlQualifiedName typeQName)
  73         {
  74             if (schemas == null)
  75                 throw System.Runtime.Serialization.DiagnosticUtility.ExceptionUtility.ThrowHelperArgumentNull("schemas");
  76             if (typeQName == null)
  77                 throw System.Runtime.Serialization.DiagnosticUtility.ExceptionUtility.ThrowHelperArgumentNull("typeQName");
  78             SchemaExporter.AddDefaultXmlType(schemas, typeQName.Name, typeQName.Namespace);
  79         }
  80 #endif
  81     }
  82 }