private static IEnumerable ExpandIncludeNode(XmlDocument ownerDocment, string baseDirectory, List <string> parentFileList, List <string> includeFileList,
XmlElement element)
{
string includeFileName = element.GetAttribute(PathToken);
if (String.IsNullOrEmpty(includeFileName))
{
return new XmlNode[] { }
}
;
if (!String.IsNullOrEmpty(baseDirectory) && !Path.IsPathRooted(includeFileName))
{
includeFileName = Path.Combine(baseDirectory, includeFileName);
}
if (!String.IsNullOrEmpty(baseDirectory) && IsCircularFileExists(parentFileList, includeFileName))
{
throw new XmlException(String.Format("Circular reference encountered on the {0} file.", baseDirectory));
}
if (!includeFileList.Contains(includeFileName))
{
includeFileList.Add(includeFileName);
}
XmlDocumentFragment fragment = ownerDocment.CreateDocumentFragment();
try
{
XmlDocument includeDoc = new XmlDocument();
includeDoc.Load(includeFileName);
foreach (XmlAttribute attr in element.Attributes)
{
if (attr.Name != PathToken)
{
includeDoc.DocumentElement.SetAttribute(attr.Name, attr.Value);
}
}
fragment.InnerXml = includeDoc.InnerXml;
return(new XmlNode[] { fragment.SelectSingleNode("/*") });
}
catch (XmlException)
{
try
{
using (StreamReader sr = File.OpenText(includeFileName))
fragment.InnerXml = sr.ReadToEnd();
return(fragment.SelectNodes("/*|/comment()"));
}
catch (Exception innerEx)
{
throw new XmlException(String.Format("{0}: Error loading xml file.", includeFileName), innerEx);
}
}
catch (Exception ex)
{
throw new XmlException(String.Format("{0}: Error loading xml file.", includeFileName), ex);
}
}
