BookmarksAndJumpLinks.java

package folioxml.export.deprecated;

import folioxml.core.InvalidMarkupException;
import folioxml.export.NodeListProcessor;
import folioxml.xml.Node;
import folioxml.xml.NodeFilter;
import folioxml.xml.NodeList;

/**
 * Fixes jump links and bookmarks, turning them into 'a' tags and using the hashes of their IDs for HTML/XML validity.
 * Strips cross-infobase jump links.
 *
 * @author nathanael
 */
public class BookmarksAndJumpLinks implements NodeListProcessor {

    public static String hashPath(String path) {

        //djl 09-22-2010 added in underscore since they can't start with #s or spaces
        return "z" + Integer.toHexString(path.hashCode());
    }

    public NodeList process(NodeList nodes) throws InvalidMarkupException {
        //Fix jump destinations and bookmarks - use hash instead of original name
        //TODO: Jump destinations often exist inside link tags. HTML doesn't handle this well (I don't think). Move them outside.

        for (Node n : nodes.search(new NodeFilter("bookmark")).list())
            n.setTagName("a").set("id", hashPath(n.get("name")));


        //Convert local jump links, delete cross-infobase links
        NodeList jumpLinks = nodes.search(new NodeFilter("link", "jumpDestination", null));
        for (Node n : jumpLinks.list()) {
            if (n.get("infobase") != null) {
                //Whoa... cross infobase links not supported.
                n.pull();
            } else {
                n.setTagName("a");
                n.set("href", "#" + hashPath(n.get("jumpDestination")));
            }

        }
        return nodes;
    }

}