private static IPRangesRegion ReadRegionElement(XmlReader reader)
{
if (reader == null)
{
throw new ArgumentNullException("reader");
}
var region = new IPRangesRegion();
while (reader.MoveToNextAttribute())
{
var attrName = reader.Name.ToLowerInvariant();
switch (attrName)
{
case "id": region.Id = reader.Value.Trim(); break;
case "name": region.Name = reader.Value.Trim(); break;
case "description": region.Description = reader.Value; break;
}
}
reader.MoveToContent();
return(region);
}
private static IPRangesRegion ReadRegionElement(XmlReader reader)
{
if (reader == null) throw new ArgumentNullException("reader");
var region = new IPRangesRegion();
while (reader.MoveToNextAttribute())
{
var attrName = reader.Name.ToLowerInvariant();
switch (attrName)
{
case "id": region.Id = reader.Value.Trim(); break;
case "name": region.Name = reader.Value.Trim(); break;
case "description": region.Description = reader.Value; break;
}
}
reader.MoveToContent();
return region;
}
public static bool TryParseFromXml(XmlTextReader reader, out IPRangesGroup group, out Exception exception, bool skipIfRootElementNotMatching)
{
if (reader == null)
{
throw new ArgumentNullException("reader");
}
exception = null;
group = null;
IPRangesRegion region = null;
IPRangesGroup result = null;
var level = 0;
while (reader.Read())
{
switch (reader.NodeType)
{
case XmlNodeType.Element:
level++;
try
{
var name = reader.Name.ToLowerInvariant();
if (level == 1)
{
if (name == "group")
{
result = ReadGroupElement(reader);
continue;
}
if (skipIfRootElementNotMatching)
{
group = new IPRangesGroup();
return(true);
}
exception = new XmlException("Invalid root element('" + reader.Name + "'), expecting 'group'");
return(false);
}
if (level == 2 && name == "region")
{
if (result == null)
{
exception = new InvalidDataException("Missing appropriate root element");
return(false);
}
region = ReadRegionElement(reader);
region.ParentGroup = result;
result.Regions.Add(region);
continue;
}
if (level == 3 && (name == "range" || name == "iprange"))
{
if (result == null)
{
exception = new InvalidDataException("Missing 'group' element");
return(false);
}
if (region == null)
{
exception = new InvalidDataException("Missing 'region' element");
return(false);
}
region.Ranges.Add(ReadRangeElement(reader));
}
}
finally
{
if (reader.IsEmptyElement)
{
level--;
}
}
break;
case XmlNodeType.EndElement:
level--;
if (level == 0)
{
group = result;
return(true);
}
break;
}
}
group = result;
return(true);
}