/**
* Get a child by its name or path.
*
* @param name element name or path/to/element
* @return the first matching element or null if no match
*/
public XML getChild(String name) {
if (name.length() > 0 && name.charAt(0) == '/') {
throw new IllegalArgumentException("getChild() should not begin with a slash");
}
if (name.indexOf('/') != -1) {
return getChildRecursive(PApplet.split(name, '/'), 0);
}
int childCount = getChildCount();
for (int i = 0; i < childCount; i++) {
XML kid = getChild(i);
String kidName = kid.getName();
if (kidName != null && kidName.equals(name)) {
return kid;
}
}
return null;
}
/**
* Get any children that match this name or path. Similar to getChild(), but will grab multiple
* matches rather than only the first.
*
* @param name element name or path/to/element
* @return array of child elements that match
* @author processing.org
*/
public XML[] getChildren(String name) {
if (name.length() > 0 && name.charAt(0) == '/') {
throw new IllegalArgumentException("getChildren() should not begin with a slash");
}
if (name.indexOf('/') != -1) {
return getChildrenRecursive(PApplet.split(name, '/'), 0);
}
// if it's a number, do an index instead
// (returns a single element array, since this will be a single match
if (Character.isDigit(name.charAt(0))) {
return new XML[] {getChild(Integer.parseInt(name))};
}
int childCount = getChildCount();
XML[] matches = new XML[childCount];
int matchCount = 0;
for (int i = 0; i < childCount; i++) {
XML kid = getChild(i);
String kidName = kid.getName();
if (kidName != null && kidName.equals(name)) {
matches[matchCount++] = kid;
}
}
return (XML[]) PApplet.subset(matches, 0, matchCount);
}
/**
* Internal helper function for getChild(String).
*
* @param items result of splitting the query on slashes
* @param offset where in the items[] array we're currently looking
* @return matching element or null if no match
* @author processing.org
*/
protected XML getChildRecursive(String[] items, int offset) {
// if it's a number, do an index instead
if (Character.isDigit(items[offset].charAt(0))) {
XML kid = getChild(Integer.parseInt(items[offset]));
if (offset == items.length - 1) {
return kid;
} else {
return kid.getChildRecursive(items, offset + 1);
}
}
int childCount = getChildCount();
for (int i = 0; i < childCount; i++) {
XML kid = getChild(i);
String kidName = kid.getName();
if (kidName != null && kidName.equals(items[offset])) {
if (offset == items.length - 1) {
return kid;
} else {
return kid.getChildRecursive(items, offset + 1);
}
}
}
return null;
}
