package test;

import java.io.FileInputStream;
import java.io.InputStream;
import java.util.Iterator;
import java.util.List;

import org.apache.xerces.parsers.SAXParser;
import org.jaxen.XPath;
import org.jaxen.jdom.JDOMXPath;
import org.jdom.Document;
import org.jdom.Element;
import org.jdom.input.SAXBuilder;
import org.jdom.output.XMLOutputter;

/**
 * 
 * @author Per Norrman
 *
 */
public class Utf {
    
    private static String escape(char c) {
        StringBuffer b = new StringBuffer();
        for (int i = 0; i < 4; i++) {
            b.append(Integer.toHexString(c & 0x000F).toUpperCase());
            c >>>= 4;
        }
        b.append("u\\");
        return b.reverse().toString();
    }

    private static void decode(String s) {
        char[] ch = s.toCharArray();
        for (int i = 0; i < ch.length; i++) {
			if(ch[i] < 128) {
                System.out.print(ch[i]);
            } else {
                System.out.print(escape(ch[i]));
            }
		}
        System.out.println();
    }

	public static void main(String[] args) throws Exception {
        SAXBuilder builder = new SAXBuilder("org.apache.xerces.parsers.SAXParser");
        InputStream in = Thread.currentThread().getContextClassLoader().getResourceAsStream("test/in-utf-8.xml");
        Document doc = builder.build(in);
        
        XPath path = new JDOMXPath("//mattext");
        List result = path.selectNodes(doc);
        System.out.println("size="+result.size());
        for (Iterator iter = result.iterator(); iter.hasNext();) {
			Element element = (Element) iter.next();
			System.out.println("-->" + element.getText());
            decode(element.getText());
		}
        
	}
}