/**
 * tracer.java
 *
 * writes trace info to a PrintWriter, a PrintStream,
 * and / or a File. Allows application to write to stdout
 * in batch mode or to http output for a servlet.
 *
 *
 * This module is part of Karl Brown's MIDI programming project.
 *
 */



package MidiApps;

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


/**
 *
 * @author  Karl Brown
 * @version 1.0
 * last updated 2/16/2003
 */

public class tracer {


  static PrintWriter pw = null; // for servlet http output stream
  static PrintStream ps = null; // for standard out
  static String fname = null; // for file

  static File f = null;
  static FileWriter fw = null;

  static int patch;

  static String name;

  public static void setPrintWriter(PrintWriter pwIn) {
	  pw = pwIn;
  }
  public static void setPrintStream(PrintStream psIn) {
	  ps = psIn;
  }
  public static void setFile(String name) {
   try {

	  fname = name;

	  f = new File(fname);
      fw = new FileWriter(f,false);

      fw.write("File created: " + fname +"\n");
//      fw.close();
      trace("File created: " + fname +"\n");
	}
		catch(Exception e)
	{
		trace("tracer::setFile: Exception caught:");
		trace(e.toString() + "<BR>");
	} //catch
 }



  public static void close() {

	 try{

	  if (pw != null) {
		  pw.println("closing print writer<BR>");
		  pw.flush();
		  pw.close();
	  }

	  if (ps != null) {
		  ps.println("closing print stream");
		  ps.close();
	  }

	  if (fw != null) {
		  fw.write("closing trace file \n");
		  fw.flush();
		  fw.close();
	  }
	}
		catch(Exception e)
	{
		trace("tracer::close: Exception caught:");
		trace(e.toString());
	} //catch
  }

/**
 *
 * Write the input string to stdout, http output,
 * and / or file
 *
 */


  public static void trace(String traceIn) {

	 try{

	  if (pw != null) {
		  pw.println(traceIn + "<BR>");
		  pw.flush();
	  }

	  if (ps != null) {
		  ps.println(traceIn);

	  }

	  if (fw != null) {
		  fw.write(traceIn + "\n");
		  fw.flush();
	  }
	}
		catch(Exception e)
	{
		trace("tracer::trace: Exception caught:");
		trace(e.toString() + "<BR>");
	} //catch
  }

  public static void print(String printIn) {

	 try{
	  if (pw != null) {
		  pw.println(printIn);
		  pw.flush();
	  }

	  if (ps != null) {
		  ps.println(printIn);
	  }
	  if (fw != null) {
		  fw.write(printIn + "\n");
		  fw.flush();
	  }
	}
		catch(Exception e)
	{
		trace("tracer::print: Exception caught:");
		trace(e.toString());
	} //catch
  }
}