private void ResolveInternalEntityReplacementText (DTDEntityBase decl)
{
string value = decl.LiteralEntityValue;
int len = value.Length;
ClearValueBuffer ();
for (int i = 0; i < len; i++) {
int ch = value [i];
int end = 0;
string name;
switch (ch) {
case '&':
i++;
end = value.IndexOf (';', i);
if (end < i + 1)
throw new XmlException (decl, decl.BaseURI, "Invalid reference markup.");
// expand charref
if (value [i] == '#') {
i++;
ch = GetCharacterReference (decl, value, ref i, end);
if (XmlChar.IsInvalid (ch))
throw NotWFError ("Invalid character was used to define parameter entity.");
} else {
name = value.Substring (i, end - i);
if (!XmlChar.IsName (name))
throw NotWFError (String.Format ("'{0}' is not a valid entity reference name.", name));
// don't expand "general" entity.
AppendValueChar ('&');
valueBuffer.Append (name);
AppendValueChar (';');
i = end;
break;
}
if (XmlChar.IsInvalid (ch))
throw new XmlException (decl, decl.BaseURI, "Invalid character was found in the entity declaration.");
AppendValueChar (ch);
break;
case '%':
i++;
end = value.IndexOf (';', i);
if (end < i + 1)
throw new XmlException (decl, decl.BaseURI, "Invalid reference markup.");
name = value.Substring (i, end - i);
valueBuffer.Append (GetPEValue (name));
i = end;
break;
default:
AppendValueChar (ch);
break;
}
}
decl.ReplacementText = CreateValueString ();
ClearValueBuffer ();
}
private int GetCharacterReference (DTDEntityBase li, string value, ref int index, int end)
{
int ret = 0;
if (value [index] == 'x') {
try {
ret = int.Parse (value.Substring (index + 1, end - index - 1), NumberStyles.HexNumber, CultureInfo.InvariantCulture);
} catch (FormatException) {
throw new XmlException (li, li.BaseURI, "Invalid number for a character reference.");
}
} else {
try {
ret = int.Parse (value.Substring (index, end - index), CultureInfo.InvariantCulture);
} catch (FormatException) {
throw new XmlException (li, li.BaseURI, "Invalid number for a character reference.");
}
}
index = end;
return ret;
}
private void ResolveExternalEntityReplacementText (DTDEntityBase decl)
{
if (decl.SystemId != null && decl.SystemId.Length > 0) {
// FIXME: not always it should be read in Element context
XmlTextReader xtr = new XmlTextReader (decl.LiteralEntityValue, XmlNodeType.Element, null);
xtr.SkipTextDeclaration ();
if (decl is DTDEntityDeclaration && DTD.EntityDecls [decl.Name] == null) {
// GE - also checked as valid contents
StringBuilder sb = new StringBuilder ();
xtr.Normalization = this.Normalization;
xtr.Read ();
while (!xtr.EOF)
sb.Append (xtr.ReadOuterXml ());
decl.ReplacementText = sb.ToString ();
}
else
// PE
decl.ReplacementText = xtr.GetRemainder ().ReadToEnd ();
}
else
decl.ReplacementText = decl.LiteralEntityValue;
}
