private void next(String name) throws NoSuchElementException {
switch (state) {
case STATE_BEFORE:
// We are before the first sibling => go to first sibling.
state = STATE_AT;
break;
case STATE_AT:
// We are at a sibling => go to next sibling if any,
// go after current if current is the last.
Element t = DOMUtil.nextSiblingElement(__current);
if (t != null) {
__current = t;
} else {
// Changed 20011001: should never go STATE_AFTER, all calls
// to next are followed by a call to current() which will then throw
// an exception =>
// TODO: remove STATE_AFTER completely
// state = STATE_AFTER;
throw new NoSuchElementException("No more sibling elements.");
}
break;
case STATE_AFTER:
// We are after the last sibling => this method call is "illegal".
throw new NoSuchElementException("No more sibling elements.");
case STATE_IN_EMPTY_SET:
// We in the child set of an element without children => this method call is "illegal".
throw new NoSuchElementException("No elements.");
default:
throw new RuntimeException("Illegal state.");
}
if (name != null && !name.equals(DOMUtil.getLocalName(__current))) {
throw new NoSuchElementException(
"Not at element " + name + ": " + __current.getNodeName() + ".");
}
}
private String text(String name) throws NoSuchElementException {
was_CDATA = false;
Element t = current();
NodeList l = t.getChildNodes();
if (name != null && !name.equals(DOMUtil.getLocalName(t))) {
throw new NoSuchElementException("Not at element " + name + ": " + t.getNodeName() + ".");
}
if (l.getLength() == 0) {
return null;
}
StringBuffer s = new StringBuffer();
was_CDATA = true;
for (int i = 0; i < l.getLength(); i++) {
Node n = l.item(i);
short nt = n.getNodeType();
if (nt != Node.TEXT_NODE && nt != Node.CDATA_SECTION_NODE) {
throw new NoSuchElementException("Not at a Text/CDATA element: " + t.getNodeName() + ".");
}
if (nt == Node.TEXT_NODE) {
was_CDATA = false;
}
s.append(n.getNodeValue());
}
return s.toString();
}
/**
* Check if the next sibling of <a href="#last">"last visited element"</a> has local
* name <code><i>name</i></code> (and if exists at all).
*
* @return true iff the <a href="#last">"last visited element"</a> has more siblings,
* and the next sibling has local name <code><i>name</i></code>.
*/
public boolean hasNext(String name) {
Element next =
(state == STATE_BEFORE)
? __current
: (state == STATE_AT) ? DOMUtil.nextSiblingElement(__current) : null;
return next != null && DOMUtil.getLocalName(next).equals(name);
}