StringHandler.java

package org.droiddraw.util;

import java.io.IOException;
import java.io.InputStream;
import java.io.PrintWriter;
import java.io.Writer;
import java.util.Hashtable;
import javax.xml.parsers.*;
import org.xml.sax.*;
import org.xml.sax.helpers.DefaultHandler;

public class StringHandler extends DefaultHandler
{
    Hashtable<String, String> strings;
    StringBuffer buff;
    String name;
    
    public StringHandler()
    {
        strings = new Hashtable<String,String>();
        buff = new StringBuffer();
    }

    @Override
    public void characters(char arg0[], int arg1, int arg2)
    {
        buff.append(arg0, arg1, arg2);
    }

    @Override
    public void startDocument()
    {
        strings.clear();
    }

    @Override
    public void startElement(String ns, String lName, String qName, Attributes atts)
    {
        buff.setLength(0);
        if(qName.equals("string"))
            name = atts.getValue("name");
    }

    @Override
    public void endElement(String uri, String localName, String qName)
    {
        if(qName.equals("string")) {
        	String str = buff.toString();
        	while (str.indexOf("\\u")!=-1) {
        		int ix = str.indexOf("\\u");
        		int code = Integer.parseInt(str.substring(ix+2, ix+6), 16);
        		str = str.substring(0, ix)+(char)code+str.substring(ix+6);
        	}
        	while (str.indexOf("\\n")!=-1) {
        		str = str.replace("\\n", "\n");
        	}
            strings.put(name, str);
        }
    }

    public Hashtable<String,String> getStrings()
    {
        return strings;
    }

    public static Hashtable<String,String> load(InputStream is)
        throws SAXException, ParserConfigurationException, IOException
    {
        return load(new InputSource(is));
    }

    public static Hashtable<String,String> load(InputSource in)
        throws SAXException, ParserConfigurationException, IOException
    {
        StringHandler sh = new StringHandler();
        SAXParserFactory factory = SAXParserFactory.newInstance();
        SAXParser parser = factory.newSAXParser();
        parser.parse(in, sh);
        return sh.getStrings();
    }
    
    public static void dump(Writer w, Hashtable<String, String> strings) 
	throws IOException
	{
		PrintWriter pw = new PrintWriter(w);
		pw.println("<?xml version=\"1.0\" encoding=\"utf-8\"?>");
		pw.println("<resources>");
		for (String key : strings.keySet()) {
			String value = strings.get(key);
			pw.println("<string name=\""+key+"\">"+value+"</string>");
		}
		pw.println("</resources>");
		pw.flush();
		w.flush();
	}

}