src/monitor/stc-time.c

   1 /*
   2  * Copyright (c) 2016 Samsung Electronics Co., Ltd.
   3  *
   4  * Licensed under the Apache License, Version 2.0 (the "License");
   5  * you may not use this file except in compliance with the License.
   6  * You may obtain a copy of the License at
   7  *
   8  * http://www.apache.org/licenses/LICENSE-2.0
   9  *
  10  * Unless required by applicable law or agreed to in writing, software
  11  * distributed under the License is distributed on an "AS IS" BASIS,
  12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  13  * See the License for the specific language governing permissions and
  14  * limitations under the License.
  15  */
  16
  17 #include <time.h>
  18 #include <stdbool.h>
  19
  20 #define SEC_IN_DAY 24 * 60 * 60
  21 #define SEC_IN_WEEK 7 * SEC_IN_DAY
  22
  23 time_t stc_time_get_day_start(time_t now)
  24 {
  25         struct tm *curr;
  26
  27         curr = localtime(&now);
  28
  29         curr->tm_sec = 0;
  30         curr->tm_min = 0;
  31         curr->tm_hour = 0;
  32
  33         return mktime(curr);
  34 }
  35
  36 time_t stc_time_get_week_start(time_t now)
  37 {
  38         struct tm *curr;
  39         int days;
  40
  41         curr = localtime(&now);
  42
  43         curr->tm_sec = 0;
  44         curr->tm_min = 0;
  45         curr->tm_hour = 0;
  46
  47         if (curr->tm_wday > 1)
  48                 days = curr->tm_wday - 1;
  49         else
  50                 days = 1 - curr->tm_wday;
  51
  52         return (mktime(curr) - (days * SEC_IN_DAY));
  53 }
  54
  55 time_t stc_time_get_month_start(time_t now, int month_start_date)
  56 {
  57         struct tm *curr;
  58         bool is_leap_year;
  59
  60         curr = localtime(&now);
  61
  62         curr->tm_sec = 0;
  63         curr->tm_min = 0;
  64         curr->tm_hour = 0;
  65
  66         if (curr->tm_mday < month_start_date) {
  67                 curr->tm_mon--;
  68                 if (curr->tm_mon < 0) {
  69                         curr->tm_mon = 11;
  70                         curr->tm_year--;
  71                 }
  72         }
  73
  74         is_leap_year = ((curr->tm_year + 1900) % 4 ? 0 : 1);
  75         curr->tm_mday = month_start_date;
  76
  77         switch (month_start_date) {
  78         case 29:
  79         case 30:
  80                 if (curr->tm_mon == 1 && !is_leap_year)
  81                         curr->tm_mday = 28;
  82
  83                 else if (curr->tm_mon == 1 && is_leap_year)
  84                         curr->tm_mday = 29;
  85
  86                 break;
  87         case 31:
  88                 if (curr->tm_mon == 1 && !is_leap_year)
  89                         curr->tm_mday = 28;
  90
  91                 else if (curr->tm_mon == 1 && is_leap_year)
  92                         curr->tm_mday = 29;
  93
  94                 else if (curr->tm_mon == 3 || curr->tm_mon == 5 ||
  95                          curr->tm_mon == 8 || curr->tm_mon == 10)
  96                         curr->tm_mday = 30;
  97
  98                 break;
  99         default:
 100                 ;//Do Nothing
 101         };
 102
 103         return mktime(curr);
 104 }