CVSLog.java :  » Source-Control » jcvsweb » com » ice » cvsc » Java Open Source

/*
** Java cvs client library package.
** Copyright (c) 1997-2002 by Timothy Gerard Endres
** 
** This program is free software.
** 
** You may redistribute it and/or modify it under the terms of the GNU
** Library General Public License (LGPL) as published by the Free Software
** Foundation.
**
** Version 2 of the license should be included with this distribution in
** the file LICENSE.txt, as well as License.html. If the license is not
** included  with this distribution, you may find a copy at the FSF web
** site at 'www.gnu.org' or 'www.fsf.org', or you may write to the Free
** Software Foundation at 59 Temple Place - Suite 330, Boston, MA 02111 USA.
**
** THIS SOFTWARE IS PROVIDED AS-IS WITHOUT WARRANTY OF ANY KIND,
** NOT EVEN THE IMPLIED WARRANTY OF MERCHANTABILITY. THE AUTHOR
** OF THIS SOFTWARE, ASSUMES _NO_ RESPONSIBILITY FOR ANY
** CONSEQUENCE RESULTING FROM THE USE, MODIFICATION, OR
** REDISTRIBUTION OF THIS SOFTWARE. 
** 
*/

package com.ice.cvsc;

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


public class
CVSLog extends Object
  {
  private static final String    RCS_ID = "$Id: CVSLog.java,v 2.7 2003/07/27 01:08:32 time Exp $";
  private static final String    RCS_REV = "$Revision: 2.7 $";
  private static final String    RCS_NAME = "$Name:  $";

  public static final String    DEFAULT_FILENAME = "cvslog.txt";

    public static boolean      debug;
    public static boolean      debugOpen;

  private static String      filename;
  private static FileWriter    file;
  private static PrintWriter    stream;
    private static boolean      checked;
    private static boolean      open;
    private static boolean      echo;
    private static boolean      autoFlush;


  static
    {
    CVSLog.open = false;
    CVSLog.checked = false;
    CVSLog.autoFlush = true;
    CVSLog.debug = false;
    CVSLog.debugOpen = false;

    CVSLog.filename =
      new String( CVSLog.DEFAULT_FILENAME );
    }

  static public void
  setLogFilename( String filename )
    {
    CVSLog.filename = filename;
    CVSLog.checked = false;
    }

    static public void
    setAutoFlush( boolean autoflush )
        {
        CVSLog.autoFlush = autoFlush;
        }

    static public void
    checkLogOpen()
        {
    if ( CVSLog.checked )
      return;

    CVSLog.checked = true;

    if ( ! CVSLog.open && CVSLog.filename != null )
      {
      CVSLog.openLogFile();
      }
        }

  static public void
  openLogFile()
    {
    boolean isok = true;

    if ( CVSLog.debugOpen )
      (new Throwable( "OPEN CVS LOG")).printStackTrace();

    if ( CVSLog.debug)
      System.err.println
        ( "CVSLog.openLogFile( " + CVSLog.filename + " )" );

    if ( CVSLog.filename == null )
      return;

    try {
      CVSLog.file = new FileWriter( CVSLog.filename );
      }
    catch ( Exception ex )
      {
      CVSLog.logMsg
        ( "error opening log file '" + CVSLog.filename
          + "', trying 'user.dir' - " + ex.getMessage() );

      String userDirStr = System.getProperty( "user.dir", "" );

      CVSLog.filename =
        userDirStr + File.separator + CVSLog.DEFAULT_FILENAME;

      try {
        CVSLog.file = new FileWriter( CVSLog.filename );
        }
      catch ( Exception ex2 )
        {
        CVSLog.logMsg
          ( "error opening log file '" + CVSLog.filename
            + "' - " + ex2.getMessage() );

        CVSLog.file = null;
        isok = false;
        }
      }

    if ( isok )
      {
      CVSLog.stream = new PrintWriter( CVSLog.file );
      CVSLog.open = true;
      }

    CVSLog.echo = false;
    }

    static public void
    closeLog()
        {
    if ( CVSLog.open )
      {
      CVSLog.open = false;
      if ( CVSLog.stream != null )
        {
        CVSLog.stream.flush();
        CVSLog.stream.close();
        }
      }
    CVSLog.checked = false;
        }

    static public void
    setEcho( boolean setting )
        {
        CVSLog.echo = setting;
        }

  static public void
  traceMsg( Throwable thrown, String msg )
    {
    CVSLog.logMsg( msg );
    CVSLog.logMsg( thrown.getMessage() );

    if ( ! CVSLog.open )
      thrown.printStackTrace( System.err );
    else
      thrown.printStackTrace( CVSLog.stream );

    if ( CVSLog.autoFlush && CVSLog.open )
      CVSLog.stream.flush();
    }


  static public void
  logMsg( String msg )
    {
    CVSLog.checkLogOpen();

    if ( CVSLog.open )
      {
      CVSLog.stream.println( msg );
      if ( CVSLog.autoFlush && CVSLog.open )
        CVSLog.stream.flush();
      }

      if ( CVSLog.echo )
          {
          System.out.println( msg );
          }
    }

  static public void
  logMsgStdout( String msg )
    {
    CVSLog.checkLogOpen();

    if ( CVSLog.open )
      {
      CVSLog.stream.println( msg );
      if ( CVSLog.autoFlush && CVSLog.open )
        CVSLog.stream.flush();
      }

      System.out.println( msg );
    }

  static public void
  logMsgStderr( String msg )
    {
    CVSLog.checkLogOpen();

    if ( CVSLog.open )
      {
      CVSLog.stream.println( msg );
      if ( CVSLog.autoFlush && CVSLog.open )
        CVSLog.stream.flush();
      }

      System.err.println( msg );
    }
  }