BrowserLog.java :  » IDE-Eclipse » ui-workbench » org » eclipse » ui » internal » browser » browsers » Java Open Source

Java Open Source » IDE Eclipse » ui workbench 
ui workbench » org » eclipse » ui » internal » browser » browsers » BrowserLog.java
/*******************************************************************************
 * Copyright (c) 2000, 2006 IBM Corporation and others.
 * All rights reserved. This program and the accompanying materials
 * are made available under the terms of the Eclipse Public License v1.0
 * which accompanies this distribution, and is available at
 * http://www.eclipse.org/legal/epl-v10.html
 *
 * Contributors:
 *     IBM Corporation - initial API and implementation
 *******************************************************************************/
package org.eclipse.ui.internal.browser.browsers;

import java.io.*;
import com.ibm.icu.text.DateFormat;
import com.ibm.icu.text.SimpleDateFormat;
import java.util.Date;

import org.eclipse.ui.internal.browser.WebBrowserUIPlugin;
/**
 * Log for messages output by external browser processes.
 */
public class BrowserLog {
  private static BrowserLog instance;
  private String logFileName;
  private boolean newSession;
  DateFormat formatter = new SimpleDateFormat("MMM dd, yyyy kk:mm:ss.SS"); //$NON-NLS-1$
  String LN = System.getProperty("line.separator"); //$NON-NLS-1$
  /**
   * Constructor
   */
  private BrowserLog() {
    try {
      newSession = true;
      logFileName = WebBrowserUIPlugin.getInstance().getStateLocation().append("browser.log").toOSString(); //$NON-NLS-1$
    } catch (Exception e) {
      // can get here if platform is shutting down
    }
  }
  /**
   * Obtains singleton
   */
  private static BrowserLog getInstance() {
    if (instance == null) {
      instance = new BrowserLog();
    }
    return instance;
  }
  /**
   * Appends a line to the browser.log
   */
  public static synchronized void log(String message) {
    getInstance().append(message);
  }
  private void append(String message) {
    if (logFileName == null) {
      return;
    }
    Writer outWriter = null;
    try {
      outWriter = new BufferedWriter(new OutputStreamWriter(
          new FileOutputStream(logFileName, true), "UTF-8")); //$NON-NLS-1$
      if (newSession) {
        newSession = false;
        outWriter.write(LN + formatter.format(new Date())
            + " NEW SESSION" + LN); //$NON-NLS-1$
      }
      outWriter.write(formatter.format(new Date()) + " " + message + LN); //$NON-NLS-1$
      outWriter.flush();
      outWriter.close();
    } catch (Exception e) {
      if (outWriter != null) {
        try {
          outWriter.close();
        } catch (IOException ioe) {
          // ignore
        }
      }
    }
  }
}
java2s.com  | Contact Us | Privacy Policy
Copyright 2009 - 12 Demo Source and Support. All rights reserved.
All other trademarks are property of their respective owners.