org.htmlunit.platform.util.XmlUtilsXercesHelper Maven / Gradle / Ivy

Go to download
Show more of this group Show more artifacts with this name
Show all versions of xlt Show documentation
XLT (Xceptance LoadTest) is an extensive load and performance test tool developed and maintained by Xceptance.
There is a newer version: 8.4.1
/*
 * Copyright (c) 2002-2024 Gargoyle Software Inc.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 * https://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package org.htmlunit.platform.util;

import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import java.util.Objects;

import org.apache.xerces.dom.DeferredDocumentImpl;
import org.apache.xerces.dom.DeferredNode;
import org.htmlunit.platform.XmlUtilsHelperAPI;
import org.w3c.dom.Document;
import org.w3c.dom.NamedNodeMap;
import org.w3c.dom.Node;

import edu.umd.cs.findbugs.annotations.SuppressFBWarnings;

/**
 * INTERNAL API - SUBJECT TO CHANGE AT ANY TIME - USE AT YOUR OWN RISK.

 *
 * Special processing if the Xerces parser is in use.
 *
 * @author Ronald Brill
 */
public final class XmlUtilsXercesHelper implements XmlUtilsHelperAPI {

    // private static final Log LOG = LogFactory.getLog(XmlUtilsXerces.class);

    /**
     * Ctor.
     */
    @SuppressFBWarnings("RV_RETURN_VALUE_IGNORED_NO_SIDE_EFFECT")
    public XmlUtilsXercesHelper() {
        // Force eager loading of classes in order to flush out any linkage errors early
        Objects.hash(DeferredDocumentImpl.class, DeferredNode.class);
    }

    /**
     * {@inheritDoc}
     */
    @Override
    public Map> getAttributesOrderMap(final Document document) {
        if (document instanceof DeferredDocumentImpl) {
            final Map> map = new HashMap<>();
            final DeferredDocumentImpl deferredDocument = (DeferredDocumentImpl) document;
            final int fNodeCount = getPrivate(deferredDocument, "fNodeCount");
            for (int i = 0; i < fNodeCount; i++) {
                final int type = deferredDocument.getNodeType(i, false);
                if (type == Node.ELEMENT_NODE) {
                    int attrIndex = deferredDocument.getNodeExtra(i, false);
                    final List attributes = new ArrayList<>();
                    map.put(i, attributes);
                    while (attrIndex != -1) {
                        attributes.add(deferredDocument.getNodeName(attrIndex, false));
                        attrIndex = deferredDocument.getPrevSibling(attrIndex, false);
                    }
                }
            }
            return map;
        }
        return null;
    }

    /**
     * {@inheritDoc}
     */
    @Override
    public int getIndex(final NamedNodeMap namedNodeMap, final Map> attributesOrderMap,
            final Node element, final int requiredIndex) {
        if (attributesOrderMap != null && element instanceof DeferredNode) {
            final int elementIndex = ((DeferredNode) element).getNodeIndex();
            final List attributesOrderList = attributesOrderMap.get(elementIndex);
            if (attributesOrderList != null) {
                final String attributeName = attributesOrderList.get(requiredIndex);
                for (int i = 0; i < namedNodeMap.getLength(); i++) {
                    if (namedNodeMap.item(i).getNodeName().equals(attributeName)) {
                        return i;
                    }
                }
            }
            return requiredIndex;
        }
        return -1;
    }
}