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/* Copyright 2002, 2003 Elliotte Rusty Harold
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This library is free software; you can redistribute it and/or modify
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it under the terms of version 2.1 of the GNU Lesser General Public
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License as published by the Free Software Foundation.
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This library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with this library; if not, write to the
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Free Software Foundation, Inc., 59 Temple Place, Suite 330,
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Boston, MA 02111-1307 USA
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You can contact Elliotte Rusty Harold by sending e-mail to
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elharo@metalab.unc.edu. Please include the word "XOM" in the
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subject line. The XOM home page is located at http://www.xom.nu/
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package nu.xom.samples;
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import java.io.IOException;
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import nu.xom.Attribute;
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import nu.xom.Builder;
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import nu.xom.Document;
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import nu.xom.Element;
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import nu.xom.Elements;
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import nu.xom.ParsingException;
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* Demonstrates recursive descent through a document,
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* and reading and setting of attributes on elements.
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* @author Elliotte Rusty Harold
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public class IDTagger {
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private static int id = 1;
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public static void processElement(Element element) {
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if (element.getAttribute("ID") == null) {
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element.addAttribute(new Attribute("ID", "_" + id));
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Elements children = element.getChildElements();
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for (int i = 0; i < children.size(); i++) {
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processElement(children.get(i));
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public static void main(String[] args) {
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Builder builder = new Builder();
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for (int i = 0; i < args.length; i++) {
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// Read the entire document into memory
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Document document = builder.build(args[i]);
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processElement(document.getRootElement());
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System.out.println(document.toXML());
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catch (ParsingException ex) {
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System.err.println(ex);
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catch (IOException ex) {
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System.err.println(ex);
b'\\ No newline at end of file'