app_datetime.c

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/*****************************************************************************
*  Copyright Statement:
*  --------------------
*  This software is protected by Copyright and the information contained
*  herein is confidential. The software may not be copied and the information
*  contained herein may not be used or disclosed except with the written
*  permission of MediaTek Inc. (C) 2005
*
*  BY OPENING THIS FILE, BUYER HEREBY UNEQUIVOCALLY ACKNOWLEDGES AND AGREES
*  THAT THE SOFTWARE/FIRMWARE AND ITS DOCUMENTATIONS ("MEDIATEK SOFTWARE")
*  RECEIVED FROM MEDIATEK AND/OR ITS REPRESENTATIVES ARE PROVIDED TO BUYER ON
*  AN "AS-IS" BASIS ONLY. MEDIATEK EXPRESSLY DISCLAIMS ANY AND ALL WARRANTIES,
*  EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE IMPLIED WARRANTIES OF
*  MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE OR NONINFRINGEMENT.
*  NEITHER DOES MEDIATEK PROVIDE ANY WARRANTY WHATSOEVER WITH RESPECT TO THE
*  SOFTWARE OF ANY THIRD PARTY WHICH MAY BE USED BY, INCORPORATED IN, OR
*  SUPPLIED WITH THE MEDIATEK SOFTWARE, AND BUYER AGREES TO LOOK ONLY TO SUCH
*  THIRD PARTY FOR ANY WARRANTY CLAIM RELATING THERETO. MEDIATEK SHALL ALSO
*  NOT BE RESPONSIBLE FOR ANY MEDIATEK SOFTWARE RELEASES MADE TO BUYER'S
*  SPECIFICATION OR TO CONFORM TO A PARTICULAR STANDARD OR OPEN FORUM.
*
*  BUYER'S SOLE AND EXCLUSIVE REMEDY AND MEDIATEK'S ENTIRE AND CUMULATIVE
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*  AT MEDIATEK'S OPTION, TO REVISE OR REPLACE THE MEDIATEK SOFTWARE AT ISSUE,
*  OR REFUND ANY SOFTWARE LICENSE FEES OR SERVICE CHARGE PAID BY BUYER TO
*  MEDIATEK FOR SUCH MEDIATEK SOFTWARE AT ISSUE. 
*
*  THE TRANSACTION CONTEMPLATED HEREUNDER SHALL BE CONSTRUED IN ACCORDANCE
*  WITH THE LAWS OF THE STATE OF CALIFORNIA, USA, EXCLUDING ITS CONFLICT OF
*  LAWS PRINCIPLES.  ANY DISPUTES, CONTROVERSIES OR CLAIMS ARISING THEREOF AND
*  RELATED THERETO SHALL BE SETTLED BY ARBITRATION IN SAN FRANCISCO, CA, UNDER
*  THE RULES OF THE INTERNATIONAL CHAMBER OF COMMERCE (ICC).
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*****************************************************************************/

/*****************************************************************************
 *
 * Filename:
 * ---------
 *   app_datetime.c
 *
 * Project:
 * --------
 *   MAUI
 *
 * Description:
 * ------------
 *   This file implements common interfaces for date/time.
 *
 * Author:
 * -------
 * -------
 *
 *============================================================================
 *             HISTORY
 * Below this line, this part is controlled by PVCS VM. DO NOT MODIFY!!
 *------------------------------------------------------------------------------
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 *------------------------------------------------------------------------------
 * Upper this line, this part is controlled by PVCS VM. DO NOT MODIFY!!
 *============================================================================
 ****************************************************************************/
#include <time.h>
#include <stdio.h>
#include <stdlib.h>
#include "kal_release.h"
#include "rtc_sw.h"
#include "app_datetime.h"
#include "custom_mmi_default_value.h"

/***************************************************************************** 
* Define
*****************************************************************************/
#define DT_UTC_BASE_YEAR 1970
#define DT_MONTH_PER_YEAR 12
#define DT_DAY_PER_YEAR 365
#define DT_SEC_PER_DAY 86400
#define DT_SEC_PER_HOUR 3600
#define DT_SEC_PER_MIN 60
#define DT_MIN_PER_HR 60
#define DT_HRS_PRE_DAY 24

#define DT_MAX_YEAR 2030
#define DT_MIN_YEAR 2000

#define YEARFORMATE  2000

/***************************************************************************** 
* Typedef 
*****************************************************************************/

/***************************************************************************** 
* Local Variable
*****************************************************************************/
static kal_char *weekday_c[] = { "Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat" };     /* Compact String */
static kal_char *weekday_f[] = { "Sunday", "Monday", "Tuesday", "Wedensday", "Thursday", "Friday", "Saturday" };        /* Full string */
static kal_char *months_c[] = { "Dec", "Jan", "Feb", "Mar", "Apr", "May", "Jun", "Jul", "Aug", "Sep", "Oct", "Nov" };   /* Compact string */
static kal_char *months_f[] = { "December", "January", "February", "March", "April", "May", "June", "July", "August", "September", "October", "November" };     /* Full string */
static const kal_int16 accumulating_monthdays[12] = {0, 31, 59, 90, 120, 151, 181, 212, 243, 273, 304, 334};

/***************************************************************************** 
* Local Function
*****************************************************************************/

/***************************************************************************** 
* Global Variable
*****************************************************************************/
const kal_uint8 g_dt_day_per_mon[DT_MONTH_PER_YEAR] = {31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31};

/***************************************************************************** 
* Global Function
*****************************************************************************/
/* MMI functions */
extern float GetTimeZone(kal_uint8 cityIndex);
extern kal_uint8 PhnsetGetHomeCity(void);
extern kal_uint8 mmi_dt_is_dst(void);
extern void DTGetRTCTime(MYTIME *t);

/*****************************************************************************
 * FUNCTION
 *  applib_dt_is_leap_year
 * DESCRIPTION
 *  Function to find out if given year is a leap year
 * PARAMETERS
 *  year        [IN]        
 *  y(?)        [IN]        Year of the date to be computed  (example, 2004)
 * RETURNS
 *  1 if the year is leap; otherwise 0.
 *****************************************************************************/
kal_uint8 applib_dt_is_leap_year(kal_uint16 year)
{
    /*----------------------------------------------------------------*/
    /* Local Variables                                                */
    /*----------------------------------------------------------------*/

    /*----------------------------------------------------------------*/
    /* Code Body                                                      */
    /*----------------------------------------------------------------*/
    if ((year % 400) == 0)
    {
        return 1;
    }
    else if ((year % 100) == 0)
    {
        return 0;
    }
    else if ((year % 4) == 0)
    {
        return 1;
    }
    else
    {
        return 0;
    }
}


/*****************************************************************************
 * FUNCTION
 *  applib_dt_last_day_of_mon
 * DESCRIPTION
 *  Function to find the last day of specific month.
 * PARAMETERS
 *  month       [IN]        Month
 *  year        [IN]        Year
 * RETURNS
 *  number of days
 *****************************************************************************/
kal_uint8 applib_dt_last_day_of_mon(kal_uint8 month, kal_uint16 year)
{
    /*----------------------------------------------------------------*/
    /* Local Variables                                                */
    /*----------------------------------------------------------------*/

    /*----------------------------------------------------------------*/
    /* Code Body                                                      */
    /*----------------------------------------------------------------*/
    if (month != 2)
    {
        return g_dt_day_per_mon[month - 1];
    }
    else
    {
        return g_dt_day_per_mon[1] + applib_dt_is_leap_year(year);
    }
}


/*****************************************************************************
 * FUNCTION
 *  applib_dt_dow
 * DESCRIPTION
 *  Function to compute current day of week.
 * PARAMETERS
 *  y       [IN]        Year of the date to be computed. (example, 2004)
 *  m       [IN]        Month of the date to be computed
 *  d       [IN]        Day of the date to be computed
 * RETURNS
 *  kal_uint8   index of day of week
 *****************************************************************************/
kal_uint8 applib_dt_dow(kal_uint16 y, kal_uint8 m, kal_uint8 d)
{
    /*----------------------------------------------------------------*/
    /* Local Variables                                                */
    /*----------------------------------------------------------------*/

    /*----------------------------------------------------------------*/
    /* Code Body                                                      */
    /*----------------------------------------------------------------*/
    if (m < 3)
    {
        m += 13;
        y--;
    }
    else
    {
        m++;
    }

    return (d + 26 * m / 10 + y + y / 4 - y / 100 + y / 400 + 6) % 7;
}


/*****************************************************************************
 * FUNCTION
 *  applib_dt_utc_to_rtc
 * DESCRIPTION
 *  compute utc time to rtc time
 * PARAMETERS
 *  tz      [IN]        Time zone
 *  utc     [IN]        Utc time
 * RETURNS
 *  result of time
 *****************************************************************************/
applib_time_struct applib_dt_utc_to_rtc(float tz, applib_time_struct *utc)
{
    /*----------------------------------------------------------------*/
    /* Local Variables                                                */
    /*----------------------------------------------------------------*/
    applib_time_struct result;
    applib_time_struct incTime;
    kal_bool negative = KAL_FALSE;

    /*----------------------------------------------------------------*/
    /* Code Body                                                      */
    /*----------------------------------------------------------------*/
    if (tz < 0)
    {
        negative = KAL_TRUE;
        tz = 0 - tz;
    }

    incTime = applib_conv_tz_to_mytime(tz);

    if (negative)
    {
        applib_dt_decrease_time(utc, &incTime, &result);
    }
    else
    {
        applib_dt_increase_time(utc, &incTime, &result);
    }

    return result;
}


/*****************************************************************************
 * FUNCTION
 *  applib_conv_tz_to_mytime
 * DESCRIPTION
 *  contert timezone to MYTIME structure
 * PARAMETERS
 *  tz      [IN]        Time zone to be converted
 * RETURNS
 *  result in MYTIME structure
 *****************************************************************************/
applib_time_struct applib_conv_tz_to_mytime(float tz)
{
    /*----------------------------------------------------------------*/
    /* Local Variables                                                */
    /*----------------------------------------------------------------*/
    applib_time_struct result;
    kal_int16 timezone = (kal_int16) (tz * 4);

    /*----------------------------------------------------------------*/
    /* Code Body                                                      */
    /*----------------------------------------------------------------*/
    kal_mem_set(&result, 0, sizeof(applib_time_struct));
    result.nHour = (kal_uint8) (timezone / 4);
    result.nMin = (kal_uint8) ((timezone % 4) * 15);

    return result;
}


/*****************************************************************************
 * FUNCTION
 *  applib_dt_decrease_time
 * DESCRIPTION
 *  Decrease a reference time by some time
 * PARAMETERS
 *  timeToDecrement     [IN]            Time to be decreased
 *  decrement           [IN]            Time to decrease
 *  Result              [IN/OUT]        Result of compuatation
 * RETURNS
 *  void
 *****************************************************************************/
void applib_dt_decrease_time(
        applib_time_struct *timeToDecrement,
        applib_time_struct *decrement,
        applib_time_struct *Result)
{
    /*----------------------------------------------------------------*/
    /* Local Variables                                                */
    /*----------------------------------------------------------------*/

    /*----------------------------------------------------------------*/
    /* Code Body                                                      */
    /*----------------------------------------------------------------*/
    if (decrement->nSec != 0)
    {
        if (timeToDecrement->nSec >= decrement->nSec)
        {