internal XmlAttribute(
string prefix,
string localName,
string namespaceURI,
XmlDocument doc,
bool atomizedNames, bool checkNamespace) : base(doc)
{
if (!atomizedNames)
{
if (prefix == null)
{
prefix = String.Empty;
}
if (namespaceURI == null)
{
namespaceURI = String.Empty;
}
}
// Prefix "xml" should be also checked (http://www.w3.org/XML/xml-names-19990114-errata#NE05)
// but MS.NET ignores such case
if (checkNamespace)
{
if (prefix == "xmlns" || (prefix == "" && localName == "xmlns"))
{
if (namespaceURI != XmlNamespaceManager.XmlnsXmlns)
{
throw new ArgumentException("Invalid attribute namespace for namespace declaration.");
}
else if (prefix == "xml" && namespaceURI != XmlNamespaceManager.XmlnsXml)
{
throw new ArgumentException("Invalid attribute namespace for namespace declaration.");
}
}
}
if (!atomizedNames)
{
// There are no means to identify the DOM is
// namespace-aware or not, so we can only
// check Name validity.
if (prefix != "" && !XmlChar.IsName(prefix))
{
throw new ArgumentException("Invalid attribute prefix.");
}
else if (!XmlChar.IsName(localName))
{
throw new ArgumentException("Invalid attribute local name.");
}
prefix = doc.NameTable.Add(prefix);
localName = doc.NameTable.Add(localName);
namespaceURI = doc.NameTable.Add(namespaceURI);
}
name = doc.NameCache.Add(prefix, localName, namespaceURI, true);
}
public static string VerifyName(string name)
{
if (name == null || name.Length == 0)
{
throw new ArgumentNullException("name");
}
if (!XmlChar.IsName(name))
{
throw new XmlException("'" + name + "' is not a valid XML Name");
}
return(name);
}
