/**
* Process index terms.
*
* @param theInput input document
* @return read index terms
* @throws ProcessException if processing index terms failed
*/
public IndexPreprocessResult process(final Document theInput) throws ProcessException {
final DocumentBuilderFactory documentBuilderFactory = DocumentBuilderFactory.newInstance();
DocumentBuilder documentBuilder = null;
try {
documentBuilder = documentBuilderFactory.newDocumentBuilder();
} catch (final ParserConfigurationException e) {
throw new RuntimeException("Unable to create a document builder: " + e.getMessage(), e);
}
final Document doc = documentBuilder.newDocument();
final Node rootElement = theInput.getDocumentElement();
final ArrayList<IndexEntry> indexes = new ArrayList<IndexEntry>();
final IndexEntryFoundListener listener =
new IndexEntryFoundListener() {
public void foundEntry(final IndexEntry theEntry) {
indexes.add(theEntry);
}
};
final Node node = processCurrNode(rootElement, doc, listener)[0];
doc.appendChild(node);
doc.getDocumentElement().setAttribute(XMLNS_ATTRIBUTE + ":" + this.prefix, this.namespace_url);
return new IndexPreprocessResult(doc, (IndexEntry[]) indexes.toArray(new IndexEntry[0]));
}
private Node[] processIndexNode(
final Node theNode,
final Document theTargetDocument,
final IndexEntryFoundListener theIndexEntryFoundListener) {
theNode.normalize();
boolean ditastyle = false;
String textNode = null;
final NodeList childNodes = theNode.getChildNodes();
final StringBuilder textBuf = new StringBuilder();
final List<Node> contents = new ArrayList<Node>();
for (int i = 0; i < childNodes.getLength(); i++) {
final Node child = childNodes.item(i);
if (checkElementName(child)) {
ditastyle = true;
break;
} else if (child.getNodeType() == Node.ELEMENT_NODE) {
textBuf.append(XMLUtils.getStringValue((Element) child));
contents.add(child);
} else if (child.getNodeType() == Node.TEXT_NODE) {
textBuf.append(child.getNodeValue());
contents.add(child);
}
}
textNode = IndexStringProcessor.normalizeTextValue(textBuf.toString());
if (textNode.length() == 0) {
textNode = null;
}
if (theNode.getAttributes().getNamedItem(elIndexRangeStartName) != null
|| theNode.getAttributes().getNamedItem(elIndexRangeEndName) != null) {
ditastyle = true;
}
final ArrayList<Node> res = new ArrayList<Node>();
if ((ditastyle)) {
final IndexEntry[] indexEntries = indexDitaProcessor.processIndexDitaNode(theNode, "");
for (final IndexEntry indexEntrie : indexEntries) {
theIndexEntryFoundListener.foundEntry(indexEntrie);
}
final Node[] nodes = transformToNodes(indexEntries, theTargetDocument, null);
for (final Node node : nodes) {
res.add(node);
}
} else if (textNode != null) {
final Node[] nodes =
processIndexString(textNode, contents, theTargetDocument, theIndexEntryFoundListener);
for (final Node node : nodes) {
res.add(node);
}
} else {
return new Node[0];
}
return (Node[]) res.toArray(new Node[res.size()]);
}