/*

 * Portions Copyright (c) 2008-2009 Nokia Corporation and/or its subsidiary(-ies). All rights reserved.

 *

 * Copyright (c) 1999

 * Silicon Graphics Computer Systems, Inc.

 *

 * Copyright (c) 1999

 * Boris Fomitchev

 *

 * This material is provided "as is", with absolutely no warranty expressed

 * or implied. Any use is at your own risk.

 *

 * Permission to use or copy this software for any purpose is hereby granted

 * without fee, provided the above notices are retained on all copies.

 * Permission to modify the code and to distribute modified code is granted,

 * provided the above notices are retained, and a notice that the code was

 * modified is included with the above copyright notice.

 *

 */

#include "stlport_prefix.h"

#include <cstdio>

#include <locale>

#include <istream>

#ifndef __SYMBIAN32__

#include <cstdio>

#endif

#include "c_locale.h"

#ifdef __SYMBIAN32__WSD__

#include <libstdcppwsd.h>

#endif //__SYMBIAN32__WSD__

_STLP_BEGIN_NAMESPACE

_STLP_MOVE_TO_PRIV_NAMESPACE

// default "C" values for month and day names

const char default_dayname[][14] = {

  "Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat",

  "Sunday", "Monday", "Tuesday", "Wednesday", "Thursday",

  "Friday", "Saturday"};

const char default_monthname[][24] = {

  "Jan", "Feb", "Mar", "Apr", "May", "Jun",

  "Jul", "Aug", "Sep", "Oct", "Nov", "Dec",

  "January", "February", "March", "April", "May", "June",

  "July", "August", "September", "October", "November", "December"};

// _Init_time_info: initialize table with

// "C" values (note these are not defined in the C standard, so this

// is somewhat arbitrary).

_STLP_DECLSPEC void _STLP_CALL _Init_timeinfo(_Time_Info& table) {

  int i;

  for (i = 0; i < 14; ++i)

    table._M_dayname[i] = default_dayname[i];

  for (i = 0; i < 24; ++i)

    table._M_monthname[i] = default_monthname[i];

  table._M_am_pm[0] = "AM";

  table._M_am_pm[1] = "PM";

  table._M_time_format = "%H:%M:%S";

  table._M_date_format = "%m/%d/%y";

  table._M_date_time_format = "%m/%d/%y";

}

_STLP_DECLSPEC void _STLP_CALL _Init_timeinfo(_Time_Info& table, _Locale_time * time) {

  if(!time)

    locale::_M_throw_runtime_error();

  int i;

  for (i = 0; i < 7; ++i)

    table._M_dayname[i] = _Locale_abbrev_dayofweek(time, i);

  for (i = 0; i < 7; ++i)

    table._M_dayname[i+7] = _Locale_full_dayofweek(time, i);

  for (i = 0; i < 12; ++i)

    table._M_monthname[i] = _Locale_abbrev_monthname(time, i);

  for (i = 0; i < 12; ++i)

    table._M_monthname[i+12] = _Locale_full_monthname(time, i);

  table._M_am_pm[0] = _Locale_am_str(time);

  table._M_am_pm[1] = _Locale_pm_str(time);

  table._M_time_format = _Locale_t_fmt(time);

  if ( table._M_time_format == "%T" ) {

    table._M_time_format = "%H:%M:%S";

  } else if ( table._M_time_format == "%r" ) {

    table._M_time_format = "%I:%M:%S %p";

  } else if ( table._M_time_format == "%R" ) {

    table._M_time_format = "%H:%M";

  }

  table._M_date_format = _Locale_d_fmt(time);

  table._M_date_time_format = _Locale_d_t_fmt(time);

  table._M_long_date_format = _Locale_long_d_fmt(time);

  table._M_long_date_time_format = _Locale_long_d_t_fmt(time);

}

inline char* __subformat(const string& format, char*& buf, size_t buf_size,

                         const _Time_Info&  table, const tm* t) {

  const char * cp = format.data();

  const char * cp_end = cp + format.size();

  while (cp != cp_end) {

    if (*cp == '%') {

      char mod = 0;

      ++cp;

      if(*cp == '#') {

        mod = *cp; ++cp;

      }

      char *former_buf = buf;

      buf = __write_formatted_time(buf, buf_size, *cp++, mod, table, t);

      buf_size -= (buf - former_buf);

    } else

      *buf++ = *cp++;

  }

  return buf;

}

#if defined (__GNUC__)

/* The number of days from the first day of the first ISO week of this

   year to the year day YDAY with week day WDAY.  ISO weeks start on

   Monday; the first ISO week has the year's first Thursday.  YDAY may

   be as small as YDAY_MINIMUM.  */

#  define __ISO_WEEK_START_WDAY 1 /* Monday */

#  define __ISO_WEEK1_WDAY 4 /* Thursday */

#  define __YDAY_MINIMUM (-366)

#  define __TM_YEAR_BASE 1900

static int

__iso_week_days(int yday, int wday) {

  /* Add enough to the first operand of % to make it nonnegative.  */

  int big_enough_multiple_of_7 = (-__YDAY_MINIMUM / 7 + 2) * 7;

  return (yday

          - (yday - wday + __ISO_WEEK1_WDAY + big_enough_multiple_of_7) % 7

          + __ISO_WEEK1_WDAY - __ISO_WEEK_START_WDAY);

}

#  define __is_leap(year)\

  ((year) % 4 == 0 && ((year) % 100 != 0 || (year) % 400 == 0))

#endif

#define __hour12(hour) \

  (((hour) % 12 == 0) ? (12) : (hour) % 12)

#if !defined (_STLP_USE_SAFE_STRING_FUNCTIONS)

#  define _STLP_SPRINTF(B, BS, F, D) sprintf(B, F, D)

#else

#  define _STLP_SPRINTF(B, BS, F, D) sprintf_s(B, BS, F, D)

#endif

_STLP_DECLSPEC char * _STLP_CALL __write_formatted_time(char* buf, size_t buf_size, char format, char modifier,

                                         const _Time_Info& table, const tm* t) {

  switch (format) {

    case 'a':

      return copy(table._M_dayname[t->tm_wday].begin(),

                  table._M_dayname[t->tm_wday].end(),

                  buf);

    case 'A':

      return copy(table._M_dayname[t->tm_wday+7].begin(),

                  table._M_dayname[t->tm_wday+7].end(),

                  buf);

    case 'b':

      return copy(table._M_monthname[t->tm_mon].begin(),

                  table._M_monthname[t->tm_mon].end(),

                  buf);

    case 'B':

      return copy(table._M_monthname[t->tm_mon+12].begin(),

                  table._M_monthname[t->tm_mon+12].end(),

                  buf);

    case 'c': {

      const char *cp = (modifier != '#') ?

        table._M_date_time_format.data() :

        table._M_long_date_time_format.data();

      const char* cp_end = cp +

        ((modifier != '#') ? table._M_date_time_format.size() :

         table._M_long_date_time_format.size() );

      char mod;

      while (cp != cp_end) {

        if (*cp == '%') {

          ++cp; if(*cp == '#') mod = *cp++; else mod = 0;

          char *buf_pos = buf;

          buf = __write_formatted_time(buf, buf_size, *cp++, mod, table, t);

          buf_size -= (buf - buf_pos);

        }

        else {

          *buf++ = *cp++; --buf_size;

        }

      }

      return buf;

    }

    case 'd':

      _STLP_SPRINTF(buf, buf_size, (modifier != '#')?"%.2ld":"%ld", (long)t->tm_mday);

      return ((long)t->tm_mday < 10L && modifier == '#')?buf+1:buf + 2;

    case 'e':

      _STLP_SPRINTF(buf, buf_size, "%2ld", (long)t->tm_mday);

      return buf + 2;

    case 'H':

      _STLP_SPRINTF(buf, buf_size, (modifier != '#')?"%.2ld":"%ld", (long)t->tm_hour);

      return ((long)t->tm_hour < 10L && modifier == '#')?buf+1:buf + 2;

    case 'I':

      _STLP_SPRINTF(buf, buf_size, (modifier != '#')?"%.2ld":"%ld", (long)__hour12(t->tm_hour));

      return ((long)__hour12(t->tm_hour) < 10L && modifier == '#')?buf+1:buf + 2;

    case 'j':

      return __write_integer(buf, 0, (long)((long)t->tm_yday + 1));

    case 'm':

      _STLP_SPRINTF(buf, buf_size, (modifier != '#')?"%.2ld":"%ld", (long)t->tm_mon + 1);

      return ((long)(t->tm_mon + 1) < 10L && modifier == '#')?buf+1:buf + 2;

    case 'M':

      _STLP_SPRINTF(buf, buf_size, (modifier != '#')?"%.2ld":"%ld", (long)t->tm_min);

      return ((long)t->tm_min < 10L && modifier == '#')?buf+1:buf + 2;

    case 'p':

      return copy(table._M_am_pm[t->tm_hour/12].begin(),

                  table._M_am_pm[t->tm_hour/12].end(),

                  buf);

    case 'S': // pad with zeros

       _STLP_SPRINTF(buf, buf_size, (modifier != '#')?"%.2ld":"%ld", (long)t->tm_sec);

       return ((long)t->tm_sec < 10L && modifier == '#')?buf+1:buf + 2;

    case 'U':

      return __write_integer(buf, 0,

                             long((t->tm_yday - t->tm_wday + 7) / 7));

      //      break;

    case 'w':

      return __write_integer(buf, 0, (long)t->tm_wday);

      //      break;

    case 'W':

      return __write_integer(buf, 0,

                             (long)(t->tm_wday == 0 ? (t->tm_yday + 1) / 7 :

                                                      (t->tm_yday + 8 - t->tm_wday) / 7));

    case'x': {

      const char * cp = (modifier != '#') ? table._M_date_format.data():

                                            table._M_long_date_format.data();

      const char* cp_end = (modifier != '#') ? cp + table._M_date_format.size():

                                               cp + table._M_long_date_format.size();

      char mod;

      while (cp != cp_end) {

        if (*cp == '%') {

          ++cp; if(*cp == '#') mod = *cp++; else mod = 0;

          char *buf_pos = buf;

          buf = __write_formatted_time(buf, buf_size, *cp++, mod, table, t);

          buf_size -= (buf - buf_pos);

        }

        else {

          *buf++ = *cp++; --buf_size;

        }

      }

      return buf;

    }

    case 'X': {

      const char * cp = table._M_time_format.data();

      const char* cp_end = cp + table._M_time_format.size();

      char mod;

      while (cp != cp_end) {

        if (*cp == '%') {

          ++cp; if(*cp == '#') mod = *cp++; else mod = 0;

          char *buf_pos = buf;

          buf = __write_formatted_time(buf, buf_size, *cp++, mod, table, t);

          buf_size -= (buf - buf_pos);

        }

        else {

          *buf++ = *cp++; --buf_size;

        }

      }

      return buf;

    }

    case 'y':

      return __write_integer(buf, 0, (long)((long)(t->tm_year + 1900) % 100));

    case 'Y':

      return __write_integer(buf, 0, (long)((long)t->tm_year + 1900));

    case '%':

      *buf++ = '%';

      return buf;

#if defined (__GNUC__)

      // fbp : at least on SUN

#  if defined (_STLP_UNIX) && !defined (__linux__)

#    define __USE_BSD 1

#  endif

   /*********************************************

    *     JGS, handle various extensions        *

    *********************************************/

    case 'h': /* POSIX.2 extension */

      // same as 'b', abbrev month name

      return copy(table._M_monthname[t->tm_mon].begin(),

                  table._M_monthname[t->tm_mon].end(),

                  buf);

    case 'C': /* POSIX.2 extension */

      // same as 'd', the day

      _STLP_SPRINTF(buf, buf_size, "%2ld", (long)t->tm_mday);

      return buf + 2;

    case 'D': /* POSIX.2 extension */

      // same as 'x'

      return __subformat(table._M_date_format, buf, buf_size, table, t);

    case 'k': /* GNU extension */

      _STLP_SPRINTF(buf, buf_size, "%2ld", (long)t->tm_hour);

      return buf + 2;

    case 'l': /* GNU extension */

      _STLP_SPRINTF(buf, buf_size, "%2ld", (long)t->tm_hour % 12);

      return buf + 2;

    case 'n': /* POSIX.2 extension */

      *buf++ = '\n';

      return buf;

    case 'R': /* GNU extension */

      return __subformat("%H:%M", buf, buf_size, table, t);

    case 'r': /* POSIX.2 extension */

      return __subformat("%I:%M:%S %p", buf, buf_size, table, t);

    case 'T': /* POSIX.2 extension.  */

      return __subformat("%H:%M:%S", buf, buf_size, table, t);

    case 't': /* POSIX.2 extension.  */

      *buf++ = '\t';

      return buf;

    case 'u': /* POSIX.2 extension.  */

      return __write_integer(buf, 0, long((t->tm_wday - 1 + 7)) % 7 + 1);

    case 's': {

      time_t __t;

      __t = mktime(__CONST_CAST(tm*, t));

      return __write_integer(buf, 0, (long)__t );

    }

    case 'g': /* GNU extension */

    case 'G': {

      int year = t->tm_year + __TM_YEAR_BASE;

      int days = __iso_week_days (t->tm_yday, t->tm_wday);

      if (days < 0) {

        /* This ISO week belongs to the previous year.  */

        year--;

        days = __iso_week_days (t->tm_yday + (365 + __is_leap (year)), t->tm_wday);

      }

      else {

        int d = __iso_week_days (t->tm_yday - (365 + __is_leap (year)), t->tm_wday);

        if (0 <= d) {

          /* This ISO week belongs to the next year.  */

          ++year;

          days = d;

        }

      }

      switch (format) {

      case 'g':

        return __write_integer(buf, 0, (long)(year % 100 + 100) % 100);

      case 'G':

        return __write_integer(buf, 0, (long)year);

      default:

        return __write_integer(buf, 0, (long)days / 7 + 1);

      }

    }

#  if defined (_STLP_USE_GLIBC) && ! defined (__CYGWIN__)

    case 'z':   /* GNU extension.  */

      if (t->tm_isdst < 0)

        break;

      {

        int diff;

#    if defined (__USE_BSD) || defined (__BEOS__)

        diff = t->tm_gmtoff;

#    else

        diff = t->__tm_gmtoff;

#    endif

        if (diff < 0) {

          *buf++ = '-';

          diff = -diff;

        } else

          *buf++ = '+';

        diff /= 60;

        _STLP_SPRINTF(buf, buf_size, "%.4d", (diff / 60) * 100 + diff % 60);

        return buf + 4;

      }

#  endif /* __GLIBC__ */

#endif /* __GNUC__ */

    default:

      //      return buf;

      break;

  }

  return buf;

}

_STLP_DECLSPEC time_base::dateorder _STLP_CALL

__get_date_order(_Locale_time* time) {

  const char * fmt = _Locale_d_fmt(time);

  char first, second, third;

  while (*fmt != 0 && *fmt != '%') ++fmt;

  if (*fmt == 0)

    return time_base::no_order;

  first = *++fmt;

  while (*fmt != 0 && *fmt != '%') ++fmt;

  if (*fmt == 0)

    return time_base::no_order;

  second = *++fmt;

  while (*fmt != 0 && *fmt != '%') ++fmt;

  if (*fmt == 0)

    return time_base::no_order;

  third = *++fmt;

  switch (first) {

    case 'd':

      return (second == 'm' && third == 'y') ? time_base::dmy

                                             : time_base::no_order;

    case 'm':

      return (second == 'd' && third == 'y') ? time_base::mdy

                                             : time_base::no_order;

    case 'y':

      switch (second) {

        case 'd':

          return third == 'm' ? time_base::ydm : time_base::no_order;

        case 'm':

          return third == 'd' ? time_base::ymd : time_base::no_order;

        default:

          return time_base::no_order;

      }

    default:

      return time_base::no_order;

  }

}

_STLP_MOVE_TO_STD_NAMESPACE

#if defined (__SYMBIAN32__WSD__)

template <>

_STLP_DECLSPEC locale::id&

time_get<char, istreambuf_iterator<char, char_traits<char> > >::GetFacetLocaleId()

    {

	return get_libcpp_wsd().time_get_char_istreambuf_iterator_id;

    }

template <>

_STLP_DECLSPEC locale::id&

time_put<char, ostreambuf_iterator<char, char_traits<char> > >::GetFacetLocaleId()

	{

	return get_libcpp_wsd().time_put_char_ostreambuf_iterator_id;

	}

#  ifndef _STLP_NO_WCHAR_T

template <>

_STLP_DECLSPEC locale::id&

time_get<wchar_t, istreambuf_iterator<wchar_t, char_traits<wchar_t> > >::GetFacetLocaleId()

	{

	return get_libcpp_wsd().time_get_wchar_istreambuf_iterator_id;

	}

template <>

_STLP_DECLSPEC locale::id&

time_put<wchar_t, ostreambuf_iterator<wchar_t, char_traits<wchar_t> > >::GetFacetLocaleId()

	{

	return get_libcpp_wsd().time_put_wchar_ostreambuf_iterator_id;

	}

#  endif /* _STLP_NO_WCHAR_T */

#endif /* __SYMBIAN32__WSD__ */

#if !defined(_STLP_NO_FORCE_INSTANTIATE)

template class time_get<char, istreambuf_iterator<char, char_traits<char> > >;

template class time_put<char, ostreambuf_iterator<char, char_traits<char> > >;

#  if !defined (_STLP_NO_WCHAR_T)

template class time_get<wchar_t, istreambuf_iterator<wchar_t, char_traits<wchar_t> > >;

template class time_put<wchar_t, ostreambuf_iterator<wchar_t, char_traits<wchar_t> > >;

#  endif

#endif

#if defined(__EPOC32__)

template <>

locale::id time_get<char, istreambuf_iterator<char, char_traits<char> > >::id={16};

template <>

locale::id time_put<char, ostreambuf_iterator<char, char_traits<char> > >::id={18};

# ifndef _STLP_NO_WCHAR_T

template <>

locale::id time_get<wchar_t, istreambuf_iterator<wchar_t, char_traits<wchar_t> > >::id={35};

template <>

locale::id time_put<wchar_t, ostreambuf_iterator<wchar_t, char_traits<wchar_t> > >::id={37};

# endif

#endif // __EPOC32__

_STLP_END_NAMESPACE