/// <include file='doc\XmlConvert.uex' path='docs/doc[@for="XmlConvert.VerifyNCName"]/*' />
/// <devdoc>
/// <para>
/// </para>
/// </devdoc>
public static string VerifyNCName(string name)
{
if (name == null || name == string.Empty)
{
throw new ArgumentNullException("name");
}
if (!XmlCharType.IsStartNCNameChar(name[0]))
{
throw new XmlException(Res.Xml_BadStartNameChar, XmlException.BuildCharExceptionStr(name[0]));
}
int nameLength = name.Length;
int position = 1;
while (position < nameLength)
{
if (!XmlCharType.IsNCNameChar(name[position]))
{
throw new XmlException(Res.Xml_BadNameChar, XmlException.BuildCharExceptionStr(name[position]));
}
position++;
}
return(name);
}
private static string EncodeName(string name, bool first, bool local)
{
if (name == null)
{
return(name);
}
if (name == String.Empty)
{
if (!first)
{
throw new XmlException(Res.Xml_InvalidNmToken, name);
}
return(name);
}
StringBuilder bufBld = null;
char[] source = name.ToCharArray();
int length = name.Length;
int copyPosition = 0;
int position = 0;
int underscorePos = name.IndexOf('_');
MatchCollection mc = null;
IEnumerator en = null;
if (underscorePos >= 0)
{
mc = c_EncodeCharPattern.Matches(name, underscorePos);
en = mc.GetEnumerator();
}
int matchPos = -1;
if (en != null && en.MoveNext())
{
Match m = (Match)en.Current;
matchPos = m.Index - 1;
}
if (first)
{
if ((local && !XmlCharType.IsStartNCNameChar(source[0])) ||
(!local && !XmlCharType.IsStartNameChar(source[0])) ||
matchPos == 0)
{
if (bufBld == null)
{
bufBld = new StringBuilder(length + 20);
}
bufBld.Append("_x");
if (length > 1 && source[0] >= 0xd800 && source[0] <= 0xdbff && source[1] >= 0xdc00 && source[1] <= 0xdfff)
{
int x = source[0];
int y = source[1];
Int32 u = (x - 0xD800) * 0x400 + (y - 0xDC00) + 0x10000;
bufBld.Append(u.ToString("X8"));
position++;
copyPosition = 2;
}
else
{
bufBld.Append(((Int32)source[0]).ToString("X4"));
copyPosition = 1;
}
bufBld.Append("_");
position++;
if (matchPos == 0)
{
if (en.MoveNext())
{
Match m = (Match)en.Current;
matchPos = m.Index - 1;
}
}
}
}
for (; position < length; position++)
{
if ((local && !XmlCharType.IsNCNameChar(source[position])) ||
(!local && !XmlCharType.IsNameChar(source[position])) ||
(matchPos == position))
{
if (bufBld == null)
{
bufBld = new StringBuilder(length + 20);
}
if (matchPos == position)
{
if (en.MoveNext())
{
Match m = (Match)en.Current;
matchPos = m.Index - 1;
}
}
bufBld.Append(source, copyPosition, position - copyPosition);
bufBld.Append("_x");
if ((length > position + 1) && source[position] >= 0xd800 && source[position] <= 0xdbff && source[position + 1] >= 0xdc00 && source[position + 1] <= 0xdfff)
{
int x = source[position];
int y = source[position + 1];
Int32 u = (x - 0xD800) * 0x400 + (y - 0xDC00) + 0x10000;
bufBld.Append(u.ToString("X8"));
copyPosition = position + 2;
position++;
}
else
{
bufBld.Append(((Int32)source[position]).ToString("X4"));
copyPosition = position + 1;
}
bufBld.Append("_");
}
}
if (copyPosition == 0)
{
return(name);
}
else
{
if (copyPosition < length)
{
bufBld.Append(source, copyPosition, length - copyPosition);
}
return(bufBld.ToString());
}
}
