//

// DateTimeFormatter.cpp

//

// Library: Foundation

// Package: DateTime

// Module:  DateTimeFormatter

//

// Copyright (c) 2004-2006, Applied Informatics Software Engineering GmbH.

// and Contributors.

//

// SPDX-License-Identifier: BSL-1.0

//

#include "Poco/DateTimeFormatter.h"

#include "Poco/DateTimeFormat.h"

#include "Poco/Timestamp.h"

#include "Poco/NumberFormatter.h"

namespace Poco {

void DateTimeFormatter::append(std::string& str, const LocalDateTime& dateTime, const std::string& fmt)

{

  DateTimeFormatter::append(str, dateTime._dateTime, fmt, dateTime.tzd());

}

void DateTimeFormatter::append(std::string& str, const DateTime& dateTime, const std::string& fmt, int timeZoneDifferential)

{

  std::string::const_iterator it  = fmt.begin();

  std::string::const_iterator end = fmt.end();

  while (it != end)

  {

    if (*it == '%')

    {

      if (++it != end)

      {

        switch (*it)

        {

        case 'w': str.append(DateTimeFormat::WEEKDAY_NAMES[dateTime.dayOfWeek()], 0, 3); break;

        case 'W': str.append(DateTimeFormat::WEEKDAY_NAMES[dateTime.dayOfWeek()]); break;

        case 'b': str.append(DateTimeFormat::MONTH_NAMES[dateTime.month() - 1], 0, 3); break;

        case 'B': str.append(DateTimeFormat::MONTH_NAMES[dateTime.month() - 1]); break;

        case 'd': NumberFormatter::append0(str, dateTime.day(), 2); break;

        case 'e': NumberFormatter::append(str, dateTime.day()); break;

        case 'f': NumberFormatter::append(str, dateTime.day(), 2); break;

        case 'm': NumberFormatter::append0(str, dateTime.month(), 2); break;

        case 'n': NumberFormatter::append(str, dateTime.month()); break;

        case 'o': NumberFormatter::append(str, dateTime.month(), 2); break;

        case 'y': NumberFormatter::append0(str, dateTime.year() % 100, 2); break;

        case 'Y': NumberFormatter::append0(str, dateTime.year(), 4); break;

        case 'H': NumberFormatter::append0(str, dateTime.hour(), 2); break;

        case 'h': NumberFormatter::append0(str, dateTime.hourAMPM(), 2); break;

        case 'a': str.append(dateTime.isAM() ? "am" : "pm"); break;

        case 'A': str.append(dateTime.isAM() ? "AM" : "PM"); break;

        case 'M': NumberFormatter::append0(str, dateTime.minute(), 2); break;

        case 'S': NumberFormatter::append0(str, dateTime.second(), 2); break;

        case 's': NumberFormatter::append0(str, dateTime.second(), 2);

              str += '.';

              NumberFormatter::append0(str, dateTime.millisecond()*1000 + dateTime.microsecond(), 6);

              break;

        case 'i': NumberFormatter::append0(str, dateTime.millisecond(), 3); break;

        case 'c': NumberFormatter::append(str, dateTime.millisecond()/100); break;

        case 'F': NumberFormatter::append0(str, dateTime.millisecond()*1000 + dateTime.microsecond(), 6); break;

        case 'z': tzdISO(str, timeZoneDifferential); break;

        case 'Z': tzdRFC(str, timeZoneDifferential); break;

        default:  str += *it;

        }

        ++it;

      }

    }

    else str += *it++;

  }

}

void DateTimeFormatter::append(std::string& str, const Timespan& timespan, const std::string& fmt)

{

  std::string::const_iterator it  = fmt.begin();

  std::string::const_iterator end = fmt.end();

  while (it != end)

  {

    if (*it == '%')

    {

      if (++it != end)

      {

        switch (*it)

        {

        case 'd': NumberFormatter::append(str, timespan.days()); break;

        case 'H': NumberFormatter::append0(str, timespan.hours(), 2); break;

        case 'h': NumberFormatter::append(str, timespan.totalHours()); break;

        case 'M': NumberFormatter::append0(str, timespan.minutes(), 2); break;

        case 'm': NumberFormatter::append(str, timespan.totalMinutes()); break;

        case 'S': NumberFormatter::append0(str, timespan.seconds(), 2); break;

        case 's': NumberFormatter::append(str, timespan.totalSeconds()); break;

        case 'i': NumberFormatter::append0(str, timespan.milliseconds(), 3); break;

        case 'c': NumberFormatter::append(str, timespan.milliseconds()/100); break;

        case 'F': NumberFormatter::append0(str, timespan.milliseconds()*1000 + timespan.microseconds(), 6); break;

        default:  str += *it;

        }

        ++it;

      }

    }

    else str += *it++;

  }

}

void DateTimeFormatter::tzdISO(std::string& str, int timeZoneDifferential)

{

  if (timeZoneDifferential != UTC)

  {

    if (timeZoneDifferential >= 0)

    {

      str += '+';

      NumberFormatter::append0(str, timeZoneDifferential/3600, 2);

      str += ':';

      NumberFormatter::append0(str, (timeZoneDifferential%3600)/60, 2);

    }

    else

    {

      str += '-';

      NumberFormatter::append0(str, -timeZoneDifferential/3600, 2);

      str += ':';

      NumberFormatter::append0(str, (-timeZoneDifferential%3600)/60, 2);

    }

  }

  else str += 'Z';

}

void DateTimeFormatter::tzdRFC(std::string& str, int timeZoneDifferential)

{

  if (timeZoneDifferential != UTC)

  {

    if (timeZoneDifferential >= 0)

    {

      str += '+';

      NumberFormatter::append0(str, timeZoneDifferential/3600, 2);

      NumberFormatter::append0(str, (timeZoneDifferential%3600)/60, 2);

    }

    else

    {

      str += '-';

      NumberFormatter::append0(str, -timeZoneDifferential/3600, 2);

      NumberFormatter::append0(str, (-timeZoneDifferential%3600)/60, 2);

    }

  }

  else str += "GMT";

}

} // namespace Poco