opensim-development – Rev 1
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/*
* Copyright (c) Contributors, http://opensimulator.org/
* See CONTRIBUTORS.TXT for a full list of copyright holders.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* * Neither the name of the OpenSimulator Project nor the
* names of its contributors may be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE DEVELOPERS ``AS IS'' AND ANY
* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE CONTRIBUTORS BE LIABLE FOR ANY
* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
using System;
using System.Collections.Generic;
using System.IO;
using System.Reflection;
using System.Xml;
using log4net;
using OpenMetaverse;
using OpenSim.Services.Interfaces;
namespace OpenSim.Framework.Serialization.External
{
/// <summary>
/// Utilities for manipulating external representations of data structures in OpenSim
/// </summary>
public class ExternalRepresentationUtils
{
private static readonly ILog m_log = LogManager.GetLogger(MethodBase.GetCurrentMethod().DeclaringType);
/// <summary>
/// Populate a node with data read from xml using a dictinoary of processors
/// </summary>
/// <param name="nodeToFill"></param>
/// <param name="processors">/param>
/// <param name="xtr"></param>
/// <returns>true on successful, false if there were any processing failures</returns>
public static bool ExecuteReadProcessors<NodeType>(
NodeType nodeToFill, Dictionary<string, Action<NodeType, XmlTextReader>> processors, XmlTextReader xtr)
{
return ExecuteReadProcessors(
nodeToFill,
processors,
xtr,
(o, name, e)
=> m_log.DebugFormat(
"[ExternalRepresentationUtils]: Exception while parsing element {0}, continuing. Exception {1}{2}",
name, e.Message, e.StackTrace));
}
/// <summary>
/// Populate a node with data read from xml using a dictinoary of processors
/// </summary>
/// <param name="nodeToFill"></param>
/// <param name="processors"></param>
/// <param name="xtr"></param>
/// <param name="parseExceptionAction">
/// Action to take if there is a parsing problem. This will usually just be to log the exception
/// </param>
/// <returns>true on successful, false if there were any processing failures</returns>
public static bool ExecuteReadProcessors<NodeType>(
NodeType nodeToFill,
Dictionary<string, Action<NodeType, XmlTextReader>> processors,
XmlTextReader xtr,
Action<NodeType, string, Exception> parseExceptionAction)
{
bool errors = false;
string nodeName = string.Empty;
while (xtr.NodeType != XmlNodeType.EndElement)
{
nodeName = xtr.Name;
// m_log.DebugFormat("[ExternalRepresentationUtils]: Processing: {0}", nodeName);
Action<NodeType, XmlTextReader> p = null;
if (processors.TryGetValue(xtr.Name, out p))
{
// m_log.DebugFormat("[ExternalRepresentationUtils]: Found {0} processor, nodeName);
try
{
p(nodeToFill, xtr);
}
catch (Exception e)
{
errors = true;
parseExceptionAction(nodeToFill, nodeName, e);
if (xtr.NodeType == XmlNodeType.EndElement)
xtr.Read();
}
}
else
{
// m_log.DebugFormat("[LandDataSerializer]: caught unknown element {0}", nodeName);
xtr.ReadOuterXml(); // ignore
}
}
return errors;
}
/// <summary>
/// Takes a XML representation of a SceneObjectPart and returns another XML representation
/// with creator data added to it.
/// </summary>
/// <param name="xml">The SceneObjectPart represented in XML2</param>
/// <param name="homeURL">The URL of the user agents service (home) for the creator</param>
/// <param name="userService">The service for retrieving user account information</param>
/// <param name="scopeID">The scope of the user account information (Grid ID)</param>
/// <returns>The SceneObjectPart represented in XML2</returns>
public static string RewriteSOP(string xml, string homeURL, IUserAccountService userService, UUID scopeID)
{
if (xml == string.Empty || homeURL == string.Empty || userService == null)
return xml;
XmlDocument doc = new XmlDocument();
doc.LoadXml(xml);
XmlNodeList sops = doc.GetElementsByTagName("SceneObjectPart");
foreach (XmlNode sop in sops)
{
UserAccount creator = null;
bool hasCreatorData = false;
XmlNodeList nodes = sop.ChildNodes;
foreach (XmlNode node in nodes)
{
if (node.Name == "CreatorID")
{
UUID uuid = UUID.Zero;
UUID.TryParse(node.InnerText, out uuid);
creator = userService.GetUserAccount(scopeID, uuid);
}
if (node.Name == "CreatorData" && node.InnerText != null && node.InnerText != string.Empty)
hasCreatorData = true;
//if (node.Name == "OwnerID")
//{
// UserAccount owner = GetUser(node.InnerText);
// if (owner != null)
// node.InnerText = m_ProfileServiceURL + "/" + node.InnerText + "/" + owner.FirstName + " " + owner.LastName;
//}
}
if (!hasCreatorData && creator != null)
{
XmlElement creatorData = doc.CreateElement("CreatorData");
creatorData.InnerText = homeURL + ";" + creator.FirstName + " " + creator.LastName;
sop.AppendChild(creatorData);
}
}
using (StringWriter wr = new StringWriter())
{
doc.Save(wr);
return wr.ToString();
}
}
}
}
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