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path: root/src/backend/utils/adt/formatting.c
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Diffstat (limited to 'src/backend/utils/adt/formatting.c')
-rw-r--r--src/backend/utils/adt/formatting.c86
1 files changed, 65 insertions, 21 deletions
diff --git a/src/backend/utils/adt/formatting.c b/src/backend/utils/adt/formatting.c
index ac74333be51..843b07d7d24 100644
--- a/src/backend/utils/adt/formatting.c
+++ b/src/backend/utils/adt/formatting.c
@@ -491,11 +491,28 @@ typedef struct
/* ----------
* Datetime to char conversion
+ *
+ * To support intervals as well as timestamps, we use a custom "tm" struct
+ * that is almost like struct pg_tm, but has a 64-bit tm_hour field.
+ * We omit the tm_isdst and tm_zone fields, which are not used here.
* ----------
*/
+struct fmt_tm
+{
+ int tm_sec;
+ int tm_min;
+ int64 tm_hour;
+ int tm_mday;
+ int tm_mon;
+ int tm_year;
+ int tm_wday;
+ int tm_yday;
+ long int tm_gmtoff;
+};
+
typedef struct TmToChar
{
- struct pg_tm tm; /* classic 'tm' struct */
+ struct fmt_tm tm; /* almost the classic 'tm' struct */
fsec_t fsec; /* fractional seconds */
const char *tzn; /* timezone */
} TmToChar;
@@ -504,12 +521,25 @@ typedef struct TmToChar
#define tmtcTzn(_X) ((_X)->tzn)
#define tmtcFsec(_X) ((_X)->fsec)
+/* Note: this is used to copy pg_tm to fmt_tm, so not quite a bitwise copy */
+#define COPY_tm(_DST, _SRC) \
+do { \
+ (_DST)->tm_sec = (_SRC)->tm_sec; \
+ (_DST)->tm_min = (_SRC)->tm_min; \
+ (_DST)->tm_hour = (_SRC)->tm_hour; \
+ (_DST)->tm_mday = (_SRC)->tm_mday; \
+ (_DST)->tm_mon = (_SRC)->tm_mon; \
+ (_DST)->tm_year = (_SRC)->tm_year; \
+ (_DST)->tm_wday = (_SRC)->tm_wday; \
+ (_DST)->tm_yday = (_SRC)->tm_yday; \
+ (_DST)->tm_gmtoff = (_SRC)->tm_gmtoff; \
+} while(0)
+
+/* Caution: this is used to zero both pg_tm and fmt_tm structs */
#define ZERO_tm(_X) \
do { \
- (_X)->tm_sec = (_X)->tm_year = (_X)->tm_min = (_X)->tm_wday = \
- (_X)->tm_hour = (_X)->tm_yday = (_X)->tm_isdst = 0; \
- (_X)->tm_mday = (_X)->tm_mon = 1; \
- (_X)->tm_zone = NULL; \
+ memset(_X, 0, sizeof(*(_X))); \
+ (_X)->tm_mday = (_X)->tm_mon = 1; \
} while(0)
#define ZERO_tmtc(_X) \
@@ -2649,7 +2679,7 @@ DCH_to_char(FormatNode *node, bool is_interval, TmToChar *in, char *out, Oid col
{
FormatNode *n;
char *s;
- struct pg_tm *tm = &in->tm;
+ struct fmt_tm *tm = &in->tm;
int i;
/* cache localized days and months */
@@ -2698,16 +2728,17 @@ DCH_to_char(FormatNode *node, bool is_interval, TmToChar *in, char *out, Oid col
* display time as shown on a 12-hour clock, even for
* intervals
*/
- sprintf(s, "%0*d", S_FM(n->suffix) ? 0 : (tm->tm_hour >= 0) ? 2 : 3,
- tm->tm_hour % (HOURS_PER_DAY / 2) == 0 ? HOURS_PER_DAY / 2 :
- tm->tm_hour % (HOURS_PER_DAY / 2));
+ sprintf(s, "%0*lld", S_FM(n->suffix) ? 0 : (tm->tm_hour >= 0) ? 2 : 3,
+ tm->tm_hour % (HOURS_PER_DAY / 2) == 0 ?
+ (long long) (HOURS_PER_DAY / 2) :
+ (long long) (tm->tm_hour % (HOURS_PER_DAY / 2)));
if (S_THth(n->suffix))
str_numth(s, s, S_TH_TYPE(n->suffix));
s += strlen(s);
break;
case DCH_HH24:
- sprintf(s, "%0*d", S_FM(n->suffix) ? 0 : (tm->tm_hour >= 0) ? 2 : 3,
- tm->tm_hour);
+ sprintf(s, "%0*lld", S_FM(n->suffix) ? 0 : (tm->tm_hour >= 0) ? 2 : 3,
+ (long long) tm->tm_hour);
if (S_THth(n->suffix))
str_numth(s, s, S_TH_TYPE(n->suffix));
s += strlen(s);
@@ -2755,9 +2786,10 @@ DCH_to_char(FormatNode *node, bool is_interval, TmToChar *in, char *out, Oid col
break;
#undef DCH_to_char_fsec
case DCH_SSSS:
- sprintf(s, "%d", tm->tm_hour * SECS_PER_HOUR +
- tm->tm_min * SECS_PER_MINUTE +
- tm->tm_sec);
+ sprintf(s, "%lld",
+ (long long) (tm->tm_hour * SECS_PER_HOUR +
+ tm->tm_min * SECS_PER_MINUTE +
+ tm->tm_sec));
if (S_THth(n->suffix))
str_numth(s, s, S_TH_TYPE(n->suffix));
s += strlen(s);
@@ -4088,7 +4120,8 @@ timestamp_to_char(PG_FUNCTION_ARGS)
text *fmt = PG_GETARG_TEXT_PP(1),
*res;
TmToChar tmtc;
- struct pg_tm *tm;
+ struct pg_tm tt;
+ struct fmt_tm *tm;
int thisdate;
if (VARSIZE_ANY_EXHDR(fmt) <= 0 || TIMESTAMP_NOT_FINITE(dt))
@@ -4097,10 +4130,11 @@ timestamp_to_char(PG_FUNCTION_ARGS)
ZERO_tmtc(&tmtc);
tm = tmtcTm(&tmtc);
- if (timestamp2tm(dt, NULL, tm, &tmtcFsec(&tmtc), NULL, NULL) != 0)
+ if (timestamp2tm(dt, NULL, &tt, &tmtcFsec(&tmtc), NULL, NULL) != 0)
ereport(ERROR,
(errcode(ERRCODE_DATETIME_VALUE_OUT_OF_RANGE),
errmsg("timestamp out of range")));
+ COPY_tm(tm, &tt);
thisdate = date2j(tm->tm_year, tm->tm_mon, tm->tm_mday);
tm->tm_wday = (thisdate + 1) % 7;
@@ -4120,7 +4154,8 @@ timestamptz_to_char(PG_FUNCTION_ARGS)
*res;
TmToChar tmtc;
int tz;
- struct pg_tm *tm;
+ struct pg_tm tt;
+ struct fmt_tm *tm;
int thisdate;
if (VARSIZE_ANY_EXHDR(fmt) <= 0 || TIMESTAMP_NOT_FINITE(dt))
@@ -4129,10 +4164,11 @@ timestamptz_to_char(PG_FUNCTION_ARGS)
ZERO_tmtc(&tmtc);
tm = tmtcTm(&tmtc);
- if (timestamp2tm(dt, &tz, tm, &tmtcFsec(&tmtc), &tmtcTzn(&tmtc), NULL) != 0)
+ if (timestamp2tm(dt, &tz, &tt, &tmtcFsec(&tmtc), &tmtcTzn(&tmtc), NULL) != 0)
ereport(ERROR,
(errcode(ERRCODE_DATETIME_VALUE_OUT_OF_RANGE),
errmsg("timestamp out of range")));
+ COPY_tm(tm, &tt);
thisdate = date2j(tm->tm_year, tm->tm_mon, tm->tm_mday);
tm->tm_wday = (thisdate + 1) % 7;
@@ -4156,7 +4192,9 @@ interval_to_char(PG_FUNCTION_ARGS)
text *fmt = PG_GETARG_TEXT_PP(1),
*res;
TmToChar tmtc;
- struct pg_tm *tm;
+ struct fmt_tm *tm;
+ struct pg_itm tt,
+ *itm = &tt;
if (VARSIZE_ANY_EXHDR(fmt) <= 0)
PG_RETURN_NULL();
@@ -4164,8 +4202,14 @@ interval_to_char(PG_FUNCTION_ARGS)
ZERO_tmtc(&tmtc);
tm = tmtcTm(&tmtc);
- if (interval2tm(*it, tm, &tmtcFsec(&tmtc)) != 0)
- PG_RETURN_NULL();
+ interval2itm(*it, itm);
+ tmtc.fsec = itm->tm_usec;
+ tm->tm_sec = itm->tm_sec;
+ tm->tm_min = itm->tm_min;
+ tm->tm_hour = itm->tm_hour;
+ tm->tm_mday = itm->tm_mday;
+ tm->tm_mon = itm->tm_mon;
+ tm->tm_year = itm->tm_year;
/* wday is meaningless, yday approximates the total span in days */
tm->tm_yday = (tm->tm_year * MONTHS_PER_YEAR + tm->tm_mon) * DAYS_PER_MONTH + tm->tm_mday;
generated by cgit v1.2.3 (git 2.25.1) at 2025-05-24 01:16:51 +0000