org.apache.tika.parser.microsoft.xml.HyperlinkHandler Maven / Gradle / Ivy
/*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You 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
*
* http://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.apache.tika.parser.microsoft.xml;
import org.apache.tika.sax.XHTMLContentHandler;
import org.xml.sax.Attributes;
import org.xml.sax.ContentHandler;
import org.xml.sax.SAXException;
import org.xml.sax.helpers.AttributesImpl;
import org.xml.sax.helpers.DefaultHandler;
class HyperlinkHandler extends DefaultHandler {
private final ContentHandler handler;
private final String namespace;
boolean inLink = false;
StringBuilder linkCache = new StringBuilder();
String href = null;
public HyperlinkHandler(ContentHandler handler, String namespace) {
this.handler = handler;
this.namespace = namespace;
}
@Override
public void startElement(String uri, String localName, String qName, Attributes attrs)
throws SAXException {
if (AbstractXML2003Parser.WORD_ML_URL.equals(uri)) {
if (AbstractXML2003Parser.HLINK.equals(localName)) {
href = attrs.getValue(AbstractXML2003Parser.WORD_ML_URL,
AbstractXML2003Parser.HLINK_DEST);
if (href != null) {
href = href.trim();
}
inLink = true;
}
}
}
@Override
public void characters(char[] str , int offset, int len) throws SAXException {
if (inLink) {
linkCache.append(str, offset, len);
}
}
@Override
public void endElement(String uri, String localName, String qName) throws SAXException {
if (! namespace.equals(uri)) {
return;
}
if (AbstractXML2003Parser.HLINK.equals(localName)) {
AttributesImpl attrs = new AttributesImpl();
if (href != null) {
attrs.addAttribute(XHTMLContentHandler.XHTML,
AbstractXML2003Parser.HREF,
AbstractXML2003Parser.HREF,
AbstractXML2003Parser.CDATA,
href);
}
handler.startElement(XHTMLContentHandler.XHTML,
AbstractXML2003Parser.A,
AbstractXML2003Parser.A,
attrs);
String linkString = linkCache.toString();
//can't be null I don't think
if (linkString != null) {
char[] chars = linkString.trim().toCharArray();
handler.characters(chars, 0, chars.length);
}
handler.endElement(XHTMLContentHandler.XHTML,
AbstractXML2003Parser.A,
AbstractXML2003Parser.A);
//reset link cache and inLink
linkCache.setLength(0);
inLink = false;
href = null;
}
}
}