Logger.cpp

/******************************************************************************************************
 * (C) 2014 markummitchell@github.com. This file is part of Engauge Digitizer, which is released      *
 * under GNU General Public License version 2 (GPLv2) or (at your option) any later version. See file *
 * LICENSE or go to gnu.org/licenses for details. Distribution requires prior written permission.     *
 ******************************************************************************************************/
 
#include <log4cpp/Category.hh>
#include <log4cpp/PatternLayout.hh>
#include <log4cpp/PropertyConfigurator.hh>
#include "Logger.h"
#include <log4cpp/RollingFileAppender.hh>
#include <QString>
 
log4cpp::Category *mainCat;
 
const QString INDENTATION_PAST_TIMESTAMP ("             ");
const QString INDENTATION_DELTA ("  ");
 
void initializeLogging (const QString &name,
                        const QString &filename,
                        bool isDebug)
{
  const size_t MAX_FILE_SIZE_BYTES = 6 * 1024 * 1024; // Size that should satisfy most email servers
  const unsigned int MAX_BACKUP_INDEX = 2;
  const bool APPEND_TO_PREVIOUS_FILE = false;
 
  log4cpp::RollingFileAppender *appender = new log4cpp::RollingFileAppender (name.toStdString (),
                                                                             filename.toStdString (),
                                                                             MAX_FILE_SIZE_BYTES,
                                                                             MAX_BACKUP_INDEX,
                                                                             APPEND_TO_PREVIOUS_FILE);
 
  log4cpp::PatternLayout *layout = new log4cpp::PatternLayout ();
  layout->setConversionPattern ("%d{%H:%M:%S.%l} %-5p %c - %m%n");
  appender->setLayout (layout);
 
  mainCat = &log4cpp::Category::getRoot ();
 
  // Levels are EMERG, FATAL, ALERT, CRIT, ERROR, WARN, NOTICE, INFO, DEBUG.
  //
  // Most trace logging is at INFO level, but methods that are called extremely often (like mouse
  // moves and status bar updates) are at the lower DEBUG level so they are rarely seen
  if (isDebug) {
    mainCat->setPriority (log4cpp::Priority::DEBUG);
  } else {
    mainCat->setPriority (log4cpp::Priority::INFO);
  }
 
  mainCat->addAppender (appender);
}