ConnectionLog.java :  » UnTagged » android-random » org » devtcg » demo » keepalive » Android Open Source

/*
 * $Id: ConnectionLog.java 217 2009-01-08 02:03:48Z jasta00 $
 */

package org.devtcg.demo.keepalive;

import java.io.BufferedWriter;
import java.io.File;
import java.io.FileWriter;
import java.io.IOException;
import java.io.Writer;
import java.text.SimpleDateFormat;
import java.util.Date;

import android.os.Environment;

public class ConnectionLog
{
  private String mPath;
  private Writer mWriter;

  private static final SimpleDateFormat TIMESTAMP_FMT = 
    new SimpleDateFormat("[HH:mm:ss] ");

  public ConnectionLog()
    throws IOException
  {
    File sdcard = Environment.getExternalStorageDirectory();
    open(sdcard.getAbsolutePath() + "/keep-alive.log");
  }

  public ConnectionLog(String basePath)
    throws IOException
  {
    open(basePath);
  }

  protected void open(String basePath)
    throws IOException
  {
    File f = new File(basePath + "-" + getTodayString());
    mPath = f.getAbsolutePath();
    mWriter = new BufferedWriter(new FileWriter(mPath), 2048);

    println("Opened log.");
  }

  private static String getTodayString()
  {
    SimpleDateFormat df = new SimpleDateFormat("yyyyMMdd-hhmmss");
    return df.format(new Date());
  }

  public String getPath()
  {
    return mPath;
  }

  public void println(String message)
    throws IOException
  {
    mWriter.write(TIMESTAMP_FMT.format(new Date()));
    mWriter.write(message);
    mWriter.write('\n');
    mWriter.flush();
  }

  public void close()
    throws IOException
  {
    mWriter.close();
  }
}