caddr_t bif_dateadd (caddr_t * qst, caddr_t * err_ret, state_slot_t ** args) { caddr_t res; caddr_t part = bif_string_arg (qst, args, 0, "dateadd"); boxint n = bif_long_arg (qst, args, 1, "dateadd"); caddr_t dt = bif_date_arg (qst, args, 2, "dateadd"); TIMESTAMP_STRUCT ts; int dt_type = DT_DT_TYPE (dt); int year_or_month_tz_tweak = (((!strcmp ("year", part)) || (!strcmp ("month", part))) ? DT_TZ (dt) : 0); DT_AUDIT_FIELDS (dt); dt_to_GMTimestamp_struct (dt, &ts); if (year_or_month_tz_tweak) ts_add (&ts, year_or_month_tz_tweak, "minute"); ts_add (&ts, n, part); if (year_or_month_tz_tweak) ts_add (&ts, -year_or_month_tz_tweak, "minute"); res = dk_alloc_box (DT_LENGTH, DV_DATETIME); GMTimestamp_struct_to_dt (&ts, res); DT_SET_TZ (res, DT_TZ (dt)); if (DT_TYPE_DATE == dt_type && (0 == stricmp (part, "year") || 0 == stricmp (part, "month") || 0 == stricmp (part, "day"))) DT_SET_DT_TYPE (res, dt_type); DT_AUDIT_FIELDS (dt); return res; }
caddr_t bif_date_diff (caddr_t * qst, caddr_t * err_ret, state_slot_t ** args) { caddr_t unit = bif_string_arg (qst, args, 0, "datediff"); caddr_t dt1 = bif_date_arg (qst, args, 1, "datediff"); caddr_t dt2 = bif_date_arg (qst, args, 2, "datediff"); boxint s1 = (boxint)DT_DAY (dt1) * 24 * 60 * 60 + (boxint)DT_HOUR (dt1) * 60 * 60 + (boxint)DT_MINUTE (dt1) * 60 + DT_SECOND (dt1); boxint s2 = (boxint)DT_DAY (dt2) * 24 * 60 * 60 + (boxint)DT_HOUR (dt2) * 60 * 60 + (boxint)DT_MINUTE (dt2) * 60 + DT_SECOND (dt2); int frac1, frac2; int diffyear, diffmonth; if (0 == stricmp (unit, "day")) return box_num ((boxint)DT_DAY (dt2) - (boxint)DT_DAY (dt1)); if (0 == stricmp (unit, "hour")) return box_num ((s2 - s1) / (60 * 60)); if (0 == stricmp (unit, "minute")) return box_num ((s2 - s1) / 60); if (0 == stricmp (unit, "second")) return box_num (s2 - s1); diffyear = !stricmp (unit, "year"); diffmonth = (diffyear ? 0 : !stricmp (unit, "month")); if (diffyear || diffmonth) { TIMESTAMP_STRUCT ts1; TIMESTAMP_STRUCT ts2; int tz_tweak = DT_TZ (dt1); dt_to_GMTimestamp_struct (dt2, &ts2); dt_to_GMTimestamp_struct (dt1, &ts1); ts_add (&ts1, tz_tweak, "minute"); ts_add (&ts2, tz_tweak, "minute"); if (diffyear) return box_num ((boxint)ts2.year - (boxint)ts1.year); if (diffmonth) return box_num ((boxint)(ts2.year * 12 + ts2.month) - (boxint)(ts1.year * 12 + ts1.month)); } frac1 = DT_FRACTION(dt1); frac2 = DT_FRACTION(dt2); if (0 == stricmp (unit, "millisecond")) return box_num ((s2 - s1) * (boxint)1000 + (frac2 / 1000000 - frac1 / 1000000)); if (0 == stricmp (unit, "microsecond")) return box_num ((s2 - s1) * (boxint)1000000 + (frac2 / 1000 - frac1 / 1000)); if (0 == stricmp (unit, "nanosecond")) return box_num ((s2 - s1) * (boxint)1000000000 + (frac2 - frac1)); sqlr_new_error ("22023", "DT002", "Bad unit in datediff: %s.", unit); return NULL; }
caddr_t bif_timestampdiff (caddr_t * qst, caddr_t * err_ret, state_slot_t ** args) { ptrlong long_unit = bif_long_arg (qst, args, 0, "timestampdiff"); caddr_t dt1 = bif_date_arg (qst, args, 1, "timestampdiff"); caddr_t dt2 = bif_date_arg (qst, args, 2, "timestampdiff"); GMTIMESTAMP_STRUCT ts1, ts2; /* BELOW OVERFLOWS on 32 bit long. Numbers used for computing difference, * hence this works when difference below 2**21 = 34 years */ boxint s1 = (boxint)DT_DAY (dt1) * 24 * 60 * 60 + DT_HOUR (dt1) * 60 * 60 + DT_MINUTE (dt1) * 60 + DT_SECOND (dt1); boxint s2 = (boxint)DT_DAY (dt2) * 24 * 60 * 60 + DT_HOUR (dt2) * 60 * 60 + DT_MINUTE (dt2) * 60 + DT_SECOND (dt2); char *unit = interval_odbc_to_text (long_unit, "timestampdiff"); if (0 == stricmp (unit, "day")) return box_num ((boxint)DT_DAY (dt2) - (boxint)DT_DAY (dt1)); if (0 == stricmp (unit, "hour")) return box_num ((s2 - s1) / (60 * 60)); if (0 == stricmp (unit, "minute")) return box_num ((s2 - s1) / 60); if (0 == stricmp (unit, "second")) return box_num (s2 - s1); dt_to_GMTimestamp_struct (dt2, &ts2); dt_to_GMTimestamp_struct (dt1, &ts1); if (0 == stricmp (unit, "month")) return box_num ((boxint)(ts2.year * 12 + ts2.month) - (boxint)(ts1.year * 12 + ts1.month)); if (0 == stricmp (unit, "year")) return box_num ((boxint)ts2.year - (boxint)ts1.year); sqlr_new_error ("22015", "DT004", "Bad interval in timestampdiff: %s.", unit); return NULL; }
caddr_t bif_timestampadd (caddr_t * qst, caddr_t * err_ret, state_slot_t ** args) { caddr_t res; ptrlong part = bif_long_arg (qst, args, 0, "timestampadd"); int n = (int) bif_long_arg (qst, args, 1, "timestampadd"); caddr_t dt = bif_date_arg (qst, args, 2, "timestampadd"); int saved_tz = DT_TZ (dt); GMTIMESTAMP_STRUCT ts; dt_to_GMTimestamp_struct (dt, &ts); ts_add (&ts, n, interval_odbc_to_text (part, "timestampadd")); res = dk_alloc_box (DT_LENGTH, DV_DATETIME); GMTimestamp_struct_to_dt (&ts, res); DT_SET_TZ (res, saved_tz); return res; }
int dt_print_to_buffer (char *buf, caddr_t arg, int mode) { int res = 0; int arg_dt_type = DT_DT_TYPE (arg); TIMESTAMP_STRUCT ts; if (0 == ((DT_PRINT_MODE_YMD | DT_PRINT_MODE_HMS) & mode)) mode |= ((DT_TYPE_TIME == arg_dt_type) ? DT_PRINT_MODE_HMS : ((DT_TYPE_DATE == arg_dt_type) ? DT_PRINT_MODE_YMD : (DT_PRINT_MODE_YMD | DT_PRINT_MODE_HMS)) ); if ((DT_PRINT_MODE_YMD & mode) && (DT_TYPE_TIME == arg_dt_type)) sqlr_new_error ("22023", "SR592", "Bit 4 in print mode requires DATE or DATETIME argument, not TIME"); if ((DT_PRINT_MODE_HMS & mode) && (DT_TYPE_DATE == arg_dt_type)) sqlr_new_error ("22023", "SR593", "Bit 2 in print mode requires TIME or DATETIME argument, not DATE"); dt_to_GMTimestamp_struct (arg, &ts); if (DT_PRINT_MODE_YMD & mode) res += sprintf (buf, "%04d-%02d-%02d", ts.year, ts.month, ts.day); if ((DT_PRINT_MODE_YMD & mode) && (DT_PRINT_MODE_HMS & mode)) buf[res++] = ((DT_PRINT_MODE_XML & mode) ? 'T' : ' '); if (DT_PRINT_MODE_HMS & mode) { res += sprintf (buf + res, "%02d:%02d:%02d", ts.hour, ts.minute, ts.second); if (ts.fraction) { if (ts.fraction % 1000) res += sprintf (buf + res, ".%09d", (int)ts.fraction); else if (ts.fraction % 1000000) res += sprintf (buf + res, ".%06d", (int)(ts.fraction / 1000)); else res += sprintf (buf + res, ".%03d", (int)(ts.fraction / 1000000)); } } if (DT_PRINT_MODE_XML & mode) { strcpy (buf + res, "Z"); return res + 1; } else { strcpy (buf + res, " GMT"); return res + 4; } }
caddr_t arithm_dt_add_num (ccaddr_t box1, ccaddr_t box2, int subtraction, caddr_t *err_ret) { int dt_type = DT_DT_TYPE (box1); dtp_t dtp2 = DV_TYPE_OF (box2); boxint whole_seconds = 0; boxint nanoseconds = 0; TIMESTAMP_STRUCT ts; caddr_t res; switch (dtp2) { case DV_LONG_INT: whole_seconds = unbox (box2); break; case DV_DOUBLE_FLOAT: { double n = unbox_double (box2); double rest; whole_seconds = (n >= 0.0) ? floor(n + 0.5) : ceil(n - 0.5); rest = n - whole_seconds; if (abs(rest/n) > (3 * DBL_EPSILON)) nanoseconds = (n - whole_seconds) * 1000000000L; break; } case DV_NUMERIC: { numeric_t n = (numeric_t)box2; if (NUMERIC_STS_SUCCESS != numeric_to_int64 (n, &whole_seconds)) { err_ret[0] = srv_make_new_error ("22003", "SR087", "Wrong arguments for datetime arithmetic: decimal is out of range."); return NULL; } if (n->n_scale > 0) { char *nptr = n->n_value + n->n_len; int ctr; int mult = 1; for (ctr = 9; ctr > n->n_scale; ctr--) mult *= 10; while (ctr--) { nanoseconds += mult * nptr[ctr]; mult *= 10; } } break; } default: return NULL; } DT_AUDIT_FIELDS (dt); dt_to_GMTimestamp_struct (box1, &ts); ts_add (&ts, (subtraction ? -whole_seconds : whole_seconds), "second"); if (nanoseconds) ts_add (&ts, (subtraction ? -nanoseconds : nanoseconds), "nanosecond"); res = dk_alloc_box (DT_LENGTH, DV_DATETIME); GMTimestamp_struct_to_dt (&ts, res); DT_SET_TZ (res, DT_TZ (box1)); if ((DT_TYPE_DATE == dt_type) && (0 == (((whole_seconds * 1000000000L) + nanoseconds) % (SPERDAY * 1000000000L)))) DT_SET_DT_TYPE (res, dt_type); DT_AUDIT_FIELDS (dt); return res; }