/**
* Assumes XmlNode#external_subset() has returned nil. (i.e. there is not already an external
* subset).
*/
public IRubyObject createExternalSubset(
ThreadContext context, IRubyObject name, IRubyObject external_id, IRubyObject system_id) {
XmlDtd dtd =
XmlDtd.newEmpty(context.getRuntime(), this.getDocument(), name, external_id, system_id);
setExternalSubset(dtd);
return dtd;
}
public IRubyObject getExternalSubset(ThreadContext context) {
IRubyObject dtd = (IRubyObject) node.getUserData(DTD_EXTERNAL_SUBSET);
if (dtd == null) {
dtd = XmlDtd.newFromExternalSubset(context.getRuntime(), getDocument());
setExternalSubset(dtd);
}
return dtd;
}
public IRubyObject getInternalSubset(ThreadContext context) {
IRubyObject dtd = (IRubyObject) node.getUserData(DTD_INTERNAL_SUBSET);
if (dtd == null) {
if (getDocument().getDoctype() == null) dtd = context.getRuntime().getNil();
else dtd = XmlDtd.newFromInternalSubset(context.getRuntime(), getDocument());
setInternalSubset(dtd);
}
return dtd;
}
