import java.io.*;
import java.util.*;


import org.xml.sax.AttributeList;
import org.xml.sax.HandlerBase;
import org.xml.sax.InputSource;
import org.xml.sax.Parser;
import org.xml.sax.SAXException;
import org.xml.sax.SAXParseException;

/*
 * @author Aleksander Slominski [aslom@extreme.indiana.edu]
 */

public class SAXTester extends HandlerBase implements Tester {
  int count;
  String elementName;
  Parser parser;
  String parserName;
  
  public SAXTester() {
  }

  public void setUp(Properties props) throws Exception {
    parserName = props.getProperty("sax.parsername");
    parser = (Parser)Class.forName(parserName).newInstance();
    //parser.setFeature("http://xml.org/sax/features/validation", false); //TODO
    //parser.setFeature("http://xml.org/sax/features/namespaces", true );
    parser.setDocumentHandler(this);
    parser.setErrorHandler(this);
  }

  public TestResult testCount(String data, int runs, String elementName) throws Exception {
    this.elementName = elementName;
    // one run for warmup
    //Reader reader = new StringReader(data);
    Reader reader = new BufferedReader(new StringReader(data));
    InputSource in = new InputSource(reader);
    parser.parse(in);
    InputSource[] ins  = new InputSource[runs];
    for(int i = 0; i < runs ; ++i) {
      reader = new StringReader(data);
      ins[i] = new InputSource(reader);
    }
    // start timing
    double start = TestTimer.tick();
    for(int i = 0; i < runs ; ++i) {
      count = 0;
      parser.parse(ins[i]);
    }
    double end = TestTimer.tick();
    TestResult result = new TestResult();
    result.elementCount = count;
    result.timeSecs = (end - start) / runs;
    return result;
  }

  // SAX1 handler
  public void startElement(String name, AttributeList attribs) {
    //System.err.println("name='"+name+"'");
    int i = name.indexOf(':');
    if(i != -1)
      name = name.substring(i + 1);
    if(name.equals(elementName)) {
     //System.err.println("name='"+name+"'");
     ++count;
    }
  }

  public String toString() {
    return "SAXParser for "+parserName;
  }
}