/src/logging-log4cxx/src/main/cpp/datepatternconverter.cpp

Source
/*
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You under the Apache License, Version 2.0
 * (the "License"); you may not use this file except in compliance with
 * the License.  You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

#include <log4cxx/logstring.h>
#include <log4cxx/pattern/datepatternconverter.h>
#include <log4cxx/spi/loggingevent.h>
#include <log4cxx/spi/location/locationinfo.h>
#include <log4cxx/helpers/absolutetimedateformat.h>
#include <log4cxx/helpers/datetimedateformat.h>
#include <log4cxx/helpers/iso8601dateformat.h>
#include <log4cxx/helpers/strftimedateformat.h>
#include <log4cxx/helpers/stringhelper.h>
#include <log4cxx/helpers/exception.h>
#include <log4cxx/helpers/loglog.h>
#include <log4cxx/helpers/date.h>
#include <log4cxx/private/patternconverter_priv.h>

using namespace LOG4CXX_NS;
using namespace LOG4CXX_NS::pattern;
using namespace LOG4CXX_NS::spi;
using namespace LOG4CXX_NS::helpers;

struct DatePatternConverter::DatePatternConverterPrivate : public PatternConverterPrivate
{
  DatePatternConverterPrivate( const LogString& name, const LogString& style, DateFormatPtr _df ):
    PatternConverterPrivate(name, style),
    df(_df) {}
  /**
   * Date format.
   */
  LOG4CXX_NS::helpers::DateFormatPtr df;
};

#define priv static_cast<DatePatternConverterPrivate*>(m_priv.get())

IMPLEMENT_LOG4CXX_OBJECT(DatePatternConverter)

DatePatternConverter::DatePatternConverter(
  const std::vector<LogString>& options) :
  LoggingEventPatternConverter (std::make_unique<DatePatternConverterPrivate>(LOG4CXX_STR("Class Name"),
      LOG4CXX_STR("class name"), getDateFormat(options)))
{
}

DatePatternConverter::~DatePatternConverter() {}

DateFormatPtr DatePatternConverter::getDateFormat(const OptionsList& options)
{
  DateFormatPtr df;
  int maximumCacheValidity = 1000000;

  if (options.size() == 0)
  {
    df = std::make_shared<ISO8601DateFormat>();
  }
  else
  {
    LogString dateFormatStr(options[0]);

    if (dateFormatStr.empty() ||
      StringHelper::equalsIgnoreCase(dateFormatStr,
        LOG4CXX_STR("ISO8601"), LOG4CXX_STR("iso8601")))
    {
      df = std::make_shared<ISO8601DateFormat>();
    }
    else if (StringHelper::equalsIgnoreCase(dateFormatStr,
        LOG4CXX_STR("ABSOLUTE"), LOG4CXX_STR("absolute")))
    {
      df = std::make_shared<AbsoluteTimeDateFormat>();
    }
    else if (StringHelper::equalsIgnoreCase(dateFormatStr,
        LOG4CXX_STR("DATE"), LOG4CXX_STR("date")))
    {
      df = std::make_shared<DateTimeDateFormat>();
    }
    else
    {
      if (dateFormatStr.find(0x25 /*'%'*/) == std::string::npos)
      {
        try
        {
          df = std::make_shared<SimpleDateFormat>(dateFormatStr);
          maximumCacheValidity =
            CachedDateFormat::getMaximumCacheValidity(dateFormatStr);
        }
        catch (std::exception& e)
        {
          df = std::make_shared<ISO8601DateFormat>();
          LogLog::warn(((LogString)
              LOG4CXX_STR("Could not instantiate SimpleDateFormat with pattern "))
            + dateFormatStr, e);
        }
      }
      else
      {
        df = std::make_shared<StrftimeDateFormat>(dateFormatStr);
      }
    }

    if (options.size() >= 2)
    {
      TimeZonePtr tz;
      try
      {
        tz = TimeZone::getTimeZone(options[1]);
      }
      catch (std::exception& e)
      {
        LogLog::warn(LOG4CXX_STR("Invalid time zone: ") + options[1], e);
      }

      if (tz)
      {
        df->setTimeZone(tz);
      }
    }
  }

  if (maximumCacheValidity > 0)
  {
    df = std::make_shared<CachedDateFormat>(df, maximumCacheValidity);
  }

  return df;
}

PatternConverterPtr DatePatternConverter::newInstance(
  const std::vector<LogString>& options)
{
  return std::make_shared<DatePatternConverter>(options);
}

void DatePatternConverter::format(
  const LoggingEventPtr& event,
  LogString& toAppendTo,
  Pool& p) const
{
  priv->df->format(toAppendTo, event->getTimeStamp(), p);
}

/**
 * {@inheritDoc}
 */
void DatePatternConverter::format(
  const ObjectPtr& obj,
  LogString& toAppendTo,
  Pool& p) const
{
  DatePtr date = LOG4CXX_NS::cast<Date>(obj);

  if (date != NULL)
  {
    format(date, toAppendTo, p);
  }
  else
  {
    LoggingEventPtr event = LOG4CXX_NS::cast<LoggingEvent>(obj);

    if (event != NULL)
    {
      format(event, toAppendTo, p);
    }
  }
}

/**
 * Append formatted date to string buffer.
 * @param date date
 * @param toAppendTo buffer to which formatted date is appended.
 */
void DatePatternConverter::format(
  const DatePtr& date,
  LogString& toAppendTo,
  Pool& p) const
{
  priv->df->format(toAppendTo, date->getTime(), p);
}

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Created: 2026-03-12 07:00