import java.io.IOException;
import java.io.PrintWriter;
import java.util.StringTokenizer;

import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

public class SVGExample extends HttpServlet {
	final private static int ht = 20, unit = 5;
	@Override
	public void doGet(HttpServletRequest request, HttpServletResponse response)
	throws IOException, ServletException {
		
		response.setContentType("image/svg+xml");
		
		String str = request.getQueryString();
		if (str==null) {
			str = "10_20_30_40_50";
		}
		StringTokenizer st = new StringTokenizer(str, "_");
		int c = st.countTokens();
		PrintWriter out = response.getWriter();
    out.printf("<?xml version=\"1.0\" encoding=\"Shift_JIS\"?>%n");
    out.printf("<!DOCTYPE svg PUBLIC \"-//W3C//DTD SVG 1.1//EN\"%n");
    out.printf("  \"http://www.w3.org/Graphics/SVG/1.1/DTD/svg11.dtd\">%n");
		out.printf("<svg version=\"1.1\" width=\"%d\" height=\"%d\"%n", unit * 100, c * ht);
    out.printf("  xmlns=\"http://www.w3.org/2000/svg\"%n");
    out.printf("  xmlns:xlink=\"http://www.w3.org/1999/xlink\">%n");
		int i;
		for (i = 0; i < c; i++) {
			out.printf("<rect stroke='blue' fill='green'");
			int w = Integer.parseInt(st.nextToken());
			out.printf(" x='0' y='%d' width='%d'", i * ht, unit * w);
			out.printf(" height='%d' />%n", ht);
		}
		out.printf("</svg>%n");
	}
}