xroad_datetime.h

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#pragma once
 
#include <stdint.h>
#include "xroad_time.h"
#include "xroad_date.h"
#include "xroad_tzone.h"
 
#define xroad_datetime_null (xroad_datetime_t){0}
 
#ifdef __cplusplus
extern "C"
{
#endif
 
typedef struct
{
   uint16_t year;
   uint8_t  month;
   uint8_t  day;
   uint8_t  hour;
   uint8_t  min;
   uint8_t  sec;
   uint32_t usec;
   xroad_tzone_t tz;
} xroad_datetime_t;
 
xroad_datetime_t xroad_datetime_create(uint16_t year, uint8_t month, uint8_t day, uint8_t hour, uint8_t min,
      uint8_t sec, uint32_t usec, xroad_tzone_t tz);
 
bool xroad_datetime_is_null(xroad_datetime_t dt);
 
xroad_timestamp_t xroad_datetime_to_ts(xroad_datetime_t dt);
 
xroad_datetime_t xroad_datetime_from_ts(xroad_timestamp_t ts, xroad_tzone_t tz);
 
xroad_datetime_t xroad_datetime_now(xroad_tzone_t tz);
 
#define xroad_datetime_to_str(dt)                                                           \
({                                                                                          \
   char* buff = (char*)alloca(64);                                                          \
   int32_t s = xroad_format(buff, 64, "%04d-%02d-%02d %02d:%02d:%02d",                      \
         dt.year, dt.month, dt.day, dt.hour, dt.min, dt.sec);                               \
   if (dt.usec)                                                                             \
   {                                                                                        \
      s += xroad_format(buff + s, 64 - s, ".%D", dt.usec);                                  \
   }                                                                                        \
   if (dt.tz)                                                                               \
   {                                                                                        \
      s += xroad_format(buff + s, 64 - s, " %P", xroad_tzone_get_name(dt.tz));              \
   }                                                                                        \
   xroad_str_len(buff, s);                                                                  \
})
 
#define xroad_datetime_to_sql(v)                   \
({                                                 \
   char* buf = "NULL";                             \
   uint32_t len = 4;                               \
   xroad_datetime_t dt = (v);                      \
   if (!xroad_datetime_is_null(dt))                \
   {                                               \
      xroad_str_t s = xroad_datetime_to_str(dt);   \
      buf = alloca(s.len + 2);                     \
      buf[0] = '\'';                               \
      memcpy(buf + 1, s.data, s.len);              \
      buf[s.len + 1] = '\'';                       \
      len = s.len + 2;                             \
   }                                               \
   xroad_str_len(buf, len);                        \
})
 
int64_t xroad_datetime_cmp(xroad_datetime_t lhs, xroad_datetime_t rhs);
 
xroad_datetime_t xroad_datetime_from_str(xroad_str_t date);
 
void xroad_datetime_set_time(xroad_datetime_t* dt, xroad_time_t time);
 
void xroad_datetime_set_date(xroad_datetime_t* dt, xroad_date_t date);
 
xroad_date_t xroad_datetime_get_date(xroad_datetime_t dt);
 
xroad_time_t xroad_datetime_get_time(xroad_datetime_t dt);
 
xroad_datetime_t xroad_datetime_from_parts(xroad_date_t date, xroad_time_t time);
 
#ifdef __cplusplus
}
#endif