Header And Logo
|
#include "postgres.h"#include <ctype.h>#include <float.h>#include <limits.h>#include <math.h>#include "access/htup_details.h"#include "access/xact.h"#include "catalog/pg_type.h"#include "funcapi.h"#include "miscadmin.h"#include "nodes/nodeFuncs.h"#include "utils/builtins.h"#include "utils/date.h"#include "utils/datetime.h"#include "utils/memutils.h"#include "utils/tzparser.h"
Go to the source code of this file.
Defines | |
| #define | ABS_SIGNBIT ((char) 0200) |
| #define | VALMASK ((char) 0177) |
| #define | POS(n) (n) |
| #define | NEG(n) ((n)|ABS_SIGNBIT) |
| #define | SIGNEDCHAR(c) ((c)&ABS_SIGNBIT? -((c)&VALMASK): (c)) |
| #define | FROMVAL(tp) (-SIGNEDCHAR((tp)->value) * 15) |
| #define | TOVAL(tp, v) ((tp)->value = ((v) < 0? NEG((-(v))/15): POS(v)/15)) |
| #define | APPEND_CHAR(bufptr, end, newchar) |
Functions | |
| static int | DecodeNumber (int flen, char *field, bool haveTextMonth, int fmask, int *tmask, struct pg_tm *tm, fsec_t *fsec, bool *is2digits) |
| static int | DecodeNumberField (int len, char *str, int fmask, int *tmask, struct pg_tm *tm, fsec_t *fsec, bool *is2digits) |
| static int | DecodeTime (char *str, int fmask, int range, int *tmask, struct pg_tm *tm, fsec_t *fsec) |
| static int | DecodeTimezone (char *str, int *tzp) |
| static const datetkn * | datebsearch (const char *key, const datetkn *base, int nel) |
| static int | DecodeDate (char *str, int fmask, int *tmask, bool *is2digits, struct pg_tm *tm) |
| static int | ValidateDate (int fmask, bool isjulian, bool is2digits, bool bc, struct pg_tm *tm) |
| static void | TrimTrailingZeros (char *str) |
| static void | AppendSeconds (char *cp, int sec, fsec_t fsec, int precision, bool fillzeros) |
| static void | AdjustFractSeconds (double frac, struct pg_tm *tm, fsec_t *fsec, int scale) |
| static void | AdjustFractDays (double frac, struct pg_tm *tm, fsec_t *fsec, int scale) |
| static int | strtoi (const char *nptr, char **endptr, int base) |
| int | date2j (int y, int m, int d) |
| void | j2date (int jd, int *year, int *month, int *day) |
| int | j2day (int date) |
| void | GetCurrentDateTime (struct pg_tm *tm) |
| void | GetCurrentTimeUsec (struct pg_tm *tm, fsec_t *fsec, int *tzp) |
| static void | AppendTimestampSeconds (char *cp, struct pg_tm *tm, fsec_t fsec) |
| static int | ParseFractionalSecond (char *cp, fsec_t *fsec) |
| int | ParseDateTime (const char *timestr, char *workbuf, size_t buflen, char **field, int *ftype, int maxfields, int *numfields) |
| int | DecodeDateTime (char **field, int *ftype, int nf, int *dtype, struct pg_tm *tm, fsec_t *fsec, int *tzp) |
| int | DetermineTimeZoneOffset (struct pg_tm *tm, pg_tz *tzp) |
| int | DecodeTimeOnly (char **field, int *ftype, int nf, int *dtype, struct pg_tm *tm, fsec_t *fsec, int *tzp) |
| int | DecodeSpecial (int field, char *lowtoken, int *val) |
| static void | ClearPgTm (struct pg_tm *tm, fsec_t *fsec) |
| int | DecodeInterval (char **field, int *ftype, int nf, int range, int *dtype, struct pg_tm *tm, fsec_t *fsec) |
| static int | ParseISO8601Number (char *str, char **endptr, int *ipart, double *fpart) |
| static int | ISO8601IntegerWidth (char *fieldstart) |
| int | DecodeISO8601Interval (char *str, int *dtype, struct pg_tm *tm, fsec_t *fsec) |
| int | DecodeUnits (int field, char *lowtoken, int *val) |
| void | DateTimeParseError (int dterr, const char *str, const char *datatype) |
| static void | EncodeTimezone (char *str, int tz, int style) |
| void | EncodeDateOnly (struct pg_tm *tm, int style, char *str) |
| void | EncodeTimeOnly (struct pg_tm *tm, fsec_t fsec, bool print_tz, int tz, int style, char *str) |
| void | EncodeDateTime (struct pg_tm *tm, fsec_t fsec, bool print_tz, int tz, const char *tzn, int style, char *str) |
| static char * | AddISO8601IntPart (char *cp, int value, char units) |
| static char * | AddPostgresIntPart (char *cp, int value, const char *units, bool *is_zero, bool *is_before) |
| static char * | AddVerboseIntPart (char *cp, int value, const char *units, bool *is_zero, bool *is_before) |
| void | EncodeInterval (struct pg_tm *tm, fsec_t fsec, int style, char *str) |
| static bool | CheckDateTokenTable (const char *tablename, const datetkn *base, int nel) |
| bool | CheckDateTokenTables (void) |
| Node * | TemporalTransform (int32 max_precis, Node *node) |
| void | ConvertTimeZoneAbbrevs (TimeZoneAbbrevTable *tbl, struct tzEntry *abbrevs, int n) |
| void | InstallTimeZoneAbbrevs (TimeZoneAbbrevTable *tbl) |
| Datum | pg_timezone_abbrevs (PG_FUNCTION_ARGS) |
| Datum | pg_timezone_names (PG_FUNCTION_ARGS) |
Variables | |
| const int | day_tab [2][13] |
| char * | months [] |
| char * | days [] |
| static datetkn * | timezonetktbl = NULL |
| static int | sztimezonetktbl = 0 |
| static const datetkn | datetktbl [] |
| static int | szdatetktbl = sizeof datetktbl / sizeof datetktbl[0] |
| static datetkn | deltatktbl [] |
| static int | szdeltatktbl = sizeof deltatktbl / sizeof deltatktbl[0] |
| static const datetkn * | datecache [MAXDATEFIELDS] = {NULL} |
| static const datetkn * | deltacache [MAXDATEFIELDS] = {NULL} |
| #define ABS_SIGNBIT ((char) 0200) |
Definition at line 80 of file datetime.c.
| #define APPEND_CHAR | ( | bufptr, | ||
| end, | ||||
| newchar | ||||
| ) |
do \ { \ if (((bufptr) + 1) >= (end)) \ return DTERR_BAD_FORMAT; \ *(bufptr)++ = newchar; \ } while (0)
Referenced by ParseDateTime().
| #define FROMVAL | ( | tp | ) | (-SIGNEDCHAR((tp)->value) * 15) |
Definition at line 85 of file datetime.c.
Referenced by DecodeSpecial(), DecodeUnits(), and pg_timezone_abbrevs().
| #define NEG | ( | n | ) | ((n)|ABS_SIGNBIT) |
Definition at line 83 of file datetime.c.
| #define POS | ( | n | ) | (n) |
Definition at line 82 of file datetime.c.
Definition at line 84 of file datetime.c.
| #define TOVAL | ( | tp, | ||
| v | ||||
| ) | ((tp)->value = ((v) < 0? NEG((-(v))/15): POS(v)/15)) |
Definition at line 86 of file datetime.c.
Referenced by ConvertTimeZoneAbbrevs().
| #define VALMASK ((char) 0177) |
Definition at line 81 of file datetime.c.
| static char* AddISO8601IntPart | ( | char * | cp, | |
| int | value, | |||
| char | units | |||
| ) | [static] |
Definition at line 3876 of file datetime.c.
Referenced by EncodeInterval().
| static char* AddPostgresIntPart | ( | char * | cp, | |
| int | value, | |||
| const char * | units, | |||
| bool * | is_zero, | |||
| bool * | is_before | |||
| ) | [static] |
Definition at line 3886 of file datetime.c.
Referenced by EncodeInterval().
{
if (value == 0)
return cp;
sprintf(cp, "%s%s%d %s%s",
(!*is_zero) ? " " : "",
(*is_before && value > 0) ? "+" : "",
value,
units,
(value != 1) ? "s" : "");
/*
* Each nonzero field sets is_before for (only) the next one. This is a
* tad bizarre but it's how it worked before...
*/
*is_before = (value < 0);
*is_zero = FALSE;
return cp + strlen(cp);
}
| static char* AddVerboseIntPart | ( | char * | cp, | |
| int | value, | |||
| const char * | units, | |||
| bool * | is_zero, | |||
| bool * | is_before | |||
| ) | [static] |
Definition at line 3909 of file datetime.c.
Referenced by EncodeInterval().
Definition at line 500 of file datetime.c.
References AdjustFractSeconds(), SECS_PER_DAY, and pg_tm::tm_mday.
Referenced by DecodeInterval(), and DecodeISO8601Interval().
{
int extra_days;
if (frac == 0)
return;
frac *= scale;
extra_days = (int) frac;
tm->tm_mday += extra_days;
frac -= extra_days;
AdjustFractSeconds(frac, tm, fsec, SECS_PER_DAY);
}
| static void AdjustFractSeconds | ( | double | frac, | |
| struct pg_tm * | tm, | |||
| fsec_t * | fsec, | |||
| int | scale | |||
| ) | [static] |
Definition at line 481 of file datetime.c.
References rint(), and pg_tm::tm_sec.
Referenced by AdjustFractDays(), DecodeInterval(), and DecodeISO8601Interval().
| static void AppendSeconds | ( | char * | cp, | |
| int | sec, | |||
| fsec_t | fsec, | |||
| int | precision, | |||
| bool | fillzeros | |||
| ) | [static] |
Definition at line 435 of file datetime.c.
References Abs, and TrimTrailingZeros().
Referenced by AppendTimestampSeconds(), EncodeInterval(), and EncodeTimeOnly().
{
if (fsec == 0)
{
if (fillzeros)
sprintf(cp, "%02d", abs(sec));
else
sprintf(cp, "%d", abs(sec));
}
else
{
#ifdef HAVE_INT64_TIMESTAMP
if (fillzeros)
sprintf(cp, "%02d.%0*d", abs(sec), precision, (int) Abs(fsec));
else
sprintf(cp, "%d.%0*d", abs(sec), precision, (int) Abs(fsec));
#else
if (fillzeros)
sprintf(cp, "%0*.*f", precision + 3, precision, fabs(sec + fsec));
else
sprintf(cp, "%.*f", precision, fabs(sec + fsec));
#endif
TrimTrailingZeros(cp);
}
}
Definition at line 463 of file datetime.c.
References AppendSeconds(), MAX_TIMESTAMP_PRECISION, pg_tm::tm_sec, and pg_tm::tm_year.
Referenced by EncodeDateTime().
{
/*
* In float mode, don't print fractional seconds before 1 AD, since it's
* unlikely there's any precision left ...
*/
#ifndef HAVE_INT64_TIMESTAMP
if (tm->tm_year <= 0)
fsec = 0;
#endif
AppendSeconds(cp, tm->tm_sec, fsec, MAX_TIMESTAMP_PRECISION, true);
}
Definition at line 4137 of file datetime.c.
References elog, i, LOG, and TOKMAXLEN.
Referenced by CheckDateTokenTables(), and ConvertTimeZoneAbbrevs().
{
bool ok = true;
int i;
for (i = 1; i < nel; i++)
{
if (strncmp(base[i - 1].token, base[i].token, TOKMAXLEN) >= 0)
{
/* %.*s is safe since all our tokens are ASCII */
elog(LOG, "ordering error in %s table: \"%.*s\" >= \"%.*s\"",
tablename,
TOKMAXLEN, base[i - 1].token,
TOKMAXLEN, base[i].token);
ok = false;
}
}
return ok;
}
| bool CheckDateTokenTables | ( | void | ) |
Definition at line 4158 of file datetime.c.
References Assert, CheckDateTokenTable(), date2j(), POSTGRES_EPOCH_JDATE, szdatetktbl, szdeltatktbl, and UNIX_EPOCH_JDATE.
Referenced by PostmasterMain().
{
bool ok = true;
Assert(UNIX_EPOCH_JDATE == date2j(1970, 1, 1));
Assert(POSTGRES_EPOCH_JDATE == date2j(2000, 1, 1));
ok &= CheckDateTokenTable("datetktbl", datetktbl, szdatetktbl);
ok &= CheckDateTokenTable("deltatktbl", deltatktbl, szdeltatktbl);
return ok;
}
Definition at line 2833 of file datetime.c.
References pg_tm::tm_hour, pg_tm::tm_mday, pg_tm::tm_min, pg_tm::tm_mon, pg_tm::tm_sec, and pg_tm::tm_year.
Referenced by DecodeInterval(), and DecodeISO8601Interval().
| void ConvertTimeZoneAbbrevs | ( | TimeZoneAbbrevTable * | tbl, | |
| struct tzEntry * | abbrevs, | |||
| int | n | |||
| ) |
Definition at line 4212 of file datetime.c.
References TimeZoneAbbrevTable::abbrevs, Assert, CheckDateTokenTable(), DTZ, i, tzEntry::is_dst, MINS_PER_HOUR, TimeZoneAbbrevTable::numabbrevs, TOKMAXLEN, TOVAL, and datetkn::type.
Referenced by load_tzoffsets().
{
datetkn *newtbl = tbl->abbrevs;
int i;
tbl->numabbrevs = n;
for (i = 0; i < n; i++)
{
strncpy(newtbl[i].token, abbrevs[i].abbrev, TOKMAXLEN);
newtbl[i].type = abbrevs[i].is_dst ? DTZ : TZ;
TOVAL(&newtbl[i], abbrevs[i].offset / MINS_PER_HOUR);
}
/* Check the ordering, if testing */
Assert(CheckDateTokenTable("timezone offset", newtbl, n));
}
| int date2j | ( | int | y, | |
| int | m, | |||
| int | d | |||
| ) |
Definition at line 301 of file datetime.c.
Referenced by abstime_date(), CheckDateTokenTables(), date2isoweek(), date2isoyear(), date2isoyearday(), date_in(), DCH_to_char(), DecodeDateTime(), DecodeNumber(), DetermineTimeZoneOffset(), EncodeDateTime(), isoweek2j(), PGTYPESdate_dayofweek(), PGTYPESdate_defmt_asc(), PGTYPESdate_fmt_asc(), PGTYPESdate_from_asc(), PGTYPESdate_julmdy(), PGTYPESdate_mdyjul(), PGTYPESdate_to_asc(), PGTYPESdate_today(), timestamp2tm(), timestamp_date(), timestamp_part(), timestamp_pl_interval(), timestamp_to_char(), timestamptz_date(), timestamptz_part(), timestamptz_pl_interval(), timestamptz_to_char(), tm2abstime(), tm2timestamp(), to_date(), and ValidateDate().
{
int julian;
int century;
if (m > 2)
{
m += 1;
y += 4800;
}
else
{
m += 13;
y += 4799;
}
century = y / 100;
julian = y * 365 - 32167;
julian += y / 4 - century + century / 4;
julian += 7834 * m / 256 + d;
return julian;
} /* date2j() */
Definition at line 3582 of file datetime.c.
References TOKMAXLEN.
Referenced by DecodeSpecial(), DecodeUnits(), and ParseDateTime().
{
if (nel > 0)
{
const datetkn *last = base + nel - 1,
*position;
int result;
while (last >= base)
{
position = base + ((last - base) >> 1);
result = key[0] - position->token[0];
if (result == 0)
{
result = strncmp(key, position->token, TOKMAXLEN);
if (result == 0)
return position;
}
if (result < 0)
last = position - 1;
else
base = position + 1;
}
}
return NULL;
}
| void DateTimeParseError | ( | int | dterr, | |
| const char * | str, | |||
| const char * | datatype | |||
| ) |
Definition at line 3537 of file datetime.c.
References DTERR_BAD_FORMAT, DTERR_FIELD_OVERFLOW, DTERR_INTERVAL_OVERFLOW, DTERR_MD_FIELD_OVERFLOW, DTERR_TZDISP_OVERFLOW, ereport, errcode(), errhint(), errmsg(), and ERROR.
Referenced by abstimein(), date_in(), interval_in(), reltimein(), time_in(), timestamp_in(), timestamptz_in(), and timetz_in().
{
switch (dterr)
{
case DTERR_FIELD_OVERFLOW:
ereport(ERROR,
(errcode(ERRCODE_DATETIME_FIELD_OVERFLOW),
errmsg("date/time field value out of range: \"%s\"",
str)));
break;
case DTERR_MD_FIELD_OVERFLOW:
/* <nanny>same as above, but add hint about DateStyle</nanny> */
ereport(ERROR,
(errcode(ERRCODE_DATETIME_FIELD_OVERFLOW),
errmsg("date/time field value out of range: \"%s\"",
str),
errhint("Perhaps you need a different \"datestyle\" setting.")));
break;
case DTERR_INTERVAL_OVERFLOW:
ereport(ERROR,
(errcode(ERRCODE_INTERVAL_FIELD_OVERFLOW),
errmsg("interval field value out of range: \"%s\"",
str)));
break;
case DTERR_TZDISP_OVERFLOW:
ereport(ERROR,
(errcode(ERRCODE_INVALID_TIME_ZONE_DISPLACEMENT_VALUE),
errmsg("time zone displacement out of range: \"%s\"",
str)));
break;
case DTERR_BAD_FORMAT:
default:
ereport(ERROR,
(errcode(ERRCODE_INVALID_DATETIME_FORMAT),
errmsg("invalid input syntax for type %s: \"%s\"",
datatype, str)));
break;
}
}
| static int DecodeDate | ( | char * | str, | |
| int | fmask, | |||
| int * | tmask, | |||
| bool * | is2digits, | |||
| struct pg_tm * | tm | |||
| ) | [static] |
Definition at line 2159 of file datetime.c.
References DecodeNumber(), DecodeSpecial(), DOY, DTK_DATE_M, DTK_M, i, IGNORE_DTF, MAXDATEFIELDS, MONTH, NULL, pg_tm::tm_mon, TZ, and val.
Referenced by DecodeDateTime(), and DecodeTimeOnly().
{
fsec_t fsec;
int nf = 0;
int i,
len;
int dterr;
bool haveTextMonth = FALSE;
int type,
val,
dmask = 0;
char *field[MAXDATEFIELDS];
*tmask = 0;
/* parse this string... */
while (*str != '\0' && nf < MAXDATEFIELDS)
{
/* skip field separators */
while (*str != '\0' && !isalnum((unsigned char) *str))
str++;
if (*str == '\0')
return DTERR_BAD_FORMAT; /* end of string after separator */
field[nf] = str;
if (isdigit((unsigned char) *str))
{
while (isdigit((unsigned char) *str))
str++;
}
else if (isalpha((unsigned char) *str))
{
while (isalpha((unsigned char) *str))
str++;
}
/* Just get rid of any non-digit, non-alpha characters... */
if (*str != '\0')
*str++ = '\0';
nf++;
}
/* look first for text fields, since that will be unambiguous month */
for (i = 0; i < nf; i++)
{
if (isalpha((unsigned char) *field[i]))
{
type = DecodeSpecial(i, field[i], &val);
if (type == IGNORE_DTF)
continue;
dmask = DTK_M(type);
switch (type)
{
case MONTH:
tm->tm_mon = val;
haveTextMonth = TRUE;
break;
default:
return DTERR_BAD_FORMAT;
}
if (fmask & dmask)
return DTERR_BAD_FORMAT;
fmask |= dmask;
*tmask |= dmask;
/* mark this field as being completed */
field[i] = NULL;
}
}
/* now pick up remaining numeric fields */
for (i = 0; i < nf; i++)
{
if (field[i] == NULL)
continue;
if ((len = strlen(field[i])) <= 0)
return DTERR_BAD_FORMAT;
dterr = DecodeNumber(len, field[i], haveTextMonth, fmask,
&dmask, tm,
&fsec, is2digits);
if (dterr)
return dterr;
if (fmask & dmask)
return DTERR_BAD_FORMAT;
fmask |= dmask;
*tmask |= dmask;
}
if ((fmask & ~(DTK_M(DOY) | DTK_M(TZ))) != DTK_DATE_M)
return DTERR_BAD_FORMAT;
/* validation of the field values must wait until ValidateDate() */
return 0;
}
| int DecodeDateTime | ( | char ** | field, | |
| int * | ftype, | |||
| int | nf, | |||
| int * | dtype, | |||
| struct pg_tm * | tm, | |||
| fsec_t * | fsec, | |||
| int * | tzp | |||
| ) |
Definition at line 788 of file datetime.c.
References ADBC, AM, AMPM, date2j(), DAY, DecodeDate(), DecodeNumber(), DecodeNumberField(), DecodeSpecial(), DecodeTime(), DecodeTimezone(), DetermineTimeZoneOffset(), DOW, dt2time(), DTERR_BAD_FORMAT, DTK_CURRENT, DTK_DATE, DTK_DATE_M, DTK_DAY, DTK_HOUR, DTK_JULIAN, DTK_M, DTK_MINUTE, DTK_MONTH, DTK_NOW, DTK_NUMBER, DTK_SECOND, DTK_SPECIAL, DTK_STRING, DTK_TIME, DTK_TIME_M, DTK_TODAY, DTK_TOMORROW, DTK_TZ, DTK_YEAR, DTK_YESTERDAY, DTK_ZULU, DTZ, DTZMOD, ereport, errcode(), errmsg(), ERROR, GetCurrentDateTime(), GetCurrentTimeUsec(), HOUR, HOURS_PER_DAY, HR24, i, IGNORE_DTF, INTERVAL_FULL_RANGE, ISOTIME, j2date(), MINUTE, MONTH, NULL, ParseFractionalSecond(), pg_tzset(), PM, RESERV, SECOND, session_timezone, strtoi(), pg_tm::tm_hour, pg_tm::tm_isdst, pg_tm::tm_mday, pg_tm::tm_min, pg_tm::tm_mon, pg_tm::tm_sec, pg_tm::tm_wday, pg_tm::tm_year, TZ, UNITS, UNKNOWN_FIELD, val, ValidateDate(), and YEAR.
Referenced by abstimein(), date_in(), pg_logdir_ls(), PGTYPESdate_from_asc(), PGTYPEStimestamp_from_asc(), timestamp_in(), and timestamptz_in().
{
int fmask = 0,
tmask,
type;
int ptype = 0; /* "prefix type" for ISO y2001m02d04 format */
int i;
int val;
int dterr;
int mer = HR24;
bool haveTextMonth = FALSE;
bool isjulian = FALSE;
bool is2digits = FALSE;
bool bc = FALSE;
pg_tz *namedTz = NULL;
struct pg_tm cur_tm;
/*
* We'll insist on at least all of the date fields, but initialize the
* remaining fields in case they are not set later...
*/
*dtype = DTK_DATE;
tm->tm_hour = 0;
tm->tm_min = 0;
tm->tm_sec = 0;
*fsec = 0;
/* don't know daylight savings time status apriori */
tm->tm_isdst = -1;
if (tzp != NULL)
*tzp = 0;
for (i = 0; i < nf; i++)
{
switch (ftype[i])
{
case DTK_DATE:
/***
* Integral julian day with attached time zone?
* All other forms with JD will be separated into
* distinct fields, so we handle just this case here.
***/
if (ptype == DTK_JULIAN)
{
char *cp;
int val;
if (tzp == NULL)
return DTERR_BAD_FORMAT;
errno = 0;
val = strtoi(field[i], &cp, 10);
if (errno == ERANGE || val < 0)
return DTERR_FIELD_OVERFLOW;
j2date(val, &tm->tm_year, &tm->tm_mon, &tm->tm_mday);
isjulian = TRUE;
/* Get the time zone from the end of the string */
dterr = DecodeTimezone(cp, tzp);
if (dterr)
return dterr;
tmask = DTK_DATE_M | DTK_TIME_M | DTK_M(TZ);
ptype = 0;
break;
}
/***
* Already have a date? Then this might be a time zone name
* with embedded punctuation (e.g. "America/New_York") or a
* run-together time with trailing time zone (e.g. hhmmss-zz).
* - thomas 2001-12-25
*
* We consider it a time zone if we already have month & day.
* This is to allow the form "mmm dd hhmmss tz year", which
* we've historically accepted.
***/
else if (ptype != 0 ||
((fmask & (DTK_M(MONTH) | DTK_M(DAY))) ==
(DTK_M(MONTH) | DTK_M(DAY))))
{
/* No time zone accepted? Then quit... */
if (tzp == NULL)
return DTERR_BAD_FORMAT;
if (isdigit((unsigned char) *field[i]) || ptype != 0)
{
char *cp;
if (ptype != 0)
{
/* Sanity check; should not fail this test */
if (ptype != DTK_TIME)
return DTERR_BAD_FORMAT;
ptype = 0;
}
/*
* Starts with a digit but we already have a time
* field? Then we are in trouble with a date and time
* already...
*/
if ((fmask & DTK_TIME_M) == DTK_TIME_M)
return DTERR_BAD_FORMAT;
if ((cp = strchr(field[i], '-')) == NULL)
return DTERR_BAD_FORMAT;
/* Get the time zone from the end of the string */
dterr = DecodeTimezone(cp, tzp);
if (dterr)
return dterr;
*cp = '\0';
/*
* Then read the rest of the field as a concatenated
* time
*/
dterr = DecodeNumberField(strlen(field[i]), field[i],
fmask,
&tmask, tm,
fsec, &is2digits);
if (dterr < 0)
return dterr;
/*
* modify tmask after returning from
* DecodeNumberField()
*/
tmask |= DTK_M(TZ);
}
else
{
namedTz = pg_tzset(field[i]);
if (!namedTz)
{
/*
* We should return an error code instead of
* ereport'ing directly, but then there is no way
* to report the bad time zone name.
*/
ereport(ERROR,
(errcode(ERRCODE_INVALID_PARAMETER_VALUE),
errmsg("time zone \"%s\" not recognized",
field[i])));
}
/* we'll apply the zone setting below */
tmask = DTK_M(TZ);
}
}
else
{
dterr = DecodeDate(field[i], fmask,
&tmask, &is2digits, tm);
if (dterr)
return dterr;
}
break;
case DTK_TIME:
/*
* This might be an ISO time following a "t" field.
*/
if (ptype != 0)
{
/* Sanity check; should not fail this test */
if (ptype != DTK_TIME)
return DTERR_BAD_FORMAT;
ptype = 0;
}
dterr = DecodeTime(field[i], fmask, INTERVAL_FULL_RANGE,
&tmask, tm, fsec);
if (dterr)
return dterr;
/*
* Check upper limit on hours; other limits checked in
* DecodeTime()
*/
/* test for > 24:00:00 */
if (tm->tm_hour > HOURS_PER_DAY ||
(tm->tm_hour == HOURS_PER_DAY &&
(tm->tm_min > 0 || tm->tm_sec > 0 || *fsec > 0)))
return DTERR_FIELD_OVERFLOW;
break;
case DTK_TZ:
{
int tz;
if (tzp == NULL)
return DTERR_BAD_FORMAT;
dterr = DecodeTimezone(field[i], &tz);
if (dterr)
return dterr;
*tzp = tz;
tmask = DTK_M(TZ);
}
break;
case DTK_NUMBER:
/*
* Was this an "ISO date" with embedded field labels? An
* example is "y2001m02d04" - thomas 2001-02-04
*/
if (ptype != 0)
{
char *cp;
int val;
errno = 0;
val = strtoi(field[i], &cp, 10);
if (errno == ERANGE)
return DTERR_FIELD_OVERFLOW;
/*
* only a few kinds are allowed to have an embedded
* decimal
*/
if (*cp == '.')
switch (ptype)
{
case DTK_JULIAN:
case DTK_TIME:
case DTK_SECOND:
break;
default:
return DTERR_BAD_FORMAT;
break;
}
else if (*cp != '\0')
return DTERR_BAD_FORMAT;
switch (ptype)
{
case DTK_YEAR:
tm->tm_year = val;
tmask = DTK_M(YEAR);
break;
case DTK_MONTH:
/*
* already have a month and hour? then assume
* minutes
*/
if ((fmask & DTK_M(MONTH)) != 0 &&
(fmask & DTK_M(HOUR)) != 0)
{
tm->tm_min = val;
tmask = DTK_M(MINUTE);
}
else
{
tm->tm_mon = val;
tmask = DTK_M(MONTH);
}
break;
case DTK_DAY:
tm->tm_mday = val;
tmask = DTK_M(DAY);
break;
case DTK_HOUR:
tm->tm_hour = val;
tmask = DTK_M(HOUR);
break;
case DTK_MINUTE:
tm->tm_min = val;
tmask = DTK_M(MINUTE);
break;
case DTK_SECOND:
tm->tm_sec = val;
tmask = DTK_M(SECOND);
if (*cp == '.')
{
dterr = ParseFractionalSecond(cp, fsec);
if (dterr)
return dterr;
tmask = DTK_ALL_SECS_M;
}
break;
case DTK_TZ:
tmask = DTK_M(TZ);
dterr = DecodeTimezone(field[i], tzp);
if (dterr)
return dterr;
break;
case DTK_JULIAN:
/* previous field was a label for "julian date" */
if (val < 0)
return DTERR_FIELD_OVERFLOW;
tmask = DTK_DATE_M;
j2date(val, &tm->tm_year, &tm->tm_mon, &tm->tm_mday);
isjulian = TRUE;
/* fractional Julian Day? */
if (*cp == '.')
{
double time;
errno = 0;
time = strtod(cp, &cp);
if (*cp != '\0' || errno != 0)
return DTERR_BAD_FORMAT;
#ifdef HAVE_INT64_TIMESTAMP
time *= USECS_PER_DAY;
#else
time *= SECS_PER_DAY;
#endif
dt2time(time,
&tm->tm_hour, &tm->tm_min,
&tm->tm_sec, fsec);
tmask |= DTK_TIME_M;
}
break;
case DTK_TIME:
/* previous field was "t" for ISO time */
dterr = DecodeNumberField(strlen(field[i]), field[i],
(fmask | DTK_DATE_M),
&tmask, tm,
fsec, &is2digits);
if (dterr < 0)
return dterr;
if (tmask != DTK_TIME_M)
return DTERR_BAD_FORMAT;
break;
default:
return DTERR_BAD_FORMAT;
break;
}
ptype = 0;
*dtype = DTK_DATE;
}
else
{
char *cp;
int flen;
flen = strlen(field[i]);
cp = strchr(field[i], '.');
/* Embedded decimal and no date yet? */
if (cp != NULL && !(fmask & DTK_DATE_M))
{
dterr = DecodeDate(field[i], fmask,
&tmask, &is2digits, tm);
if (dterr)
return dterr;
}
/* embedded decimal and several digits before? */
else if (cp != NULL && flen - strlen(cp) > 2)
{
/*
* Interpret as a concatenated date or time Set the
* type field to allow decoding other fields later.
* Example: 20011223 or 040506
*/
dterr = DecodeNumberField(flen, field[i], fmask,
&tmask, tm,
fsec, &is2digits);
if (dterr < 0)
return dterr;
}
else if (flen > 4)
{
dterr = DecodeNumberField(flen, field[i], fmask,
&tmask, tm,
fsec, &is2digits);
if (dterr < 0)
return dterr;
}
/* otherwise it is a single date/time field... */
else
{
dterr = DecodeNumber(flen, field[i],
haveTextMonth, fmask,
&tmask, tm,
fsec, &is2digits);
if (dterr)
return dterr;
}
}
break;
case DTK_STRING:
case DTK_SPECIAL:
type = DecodeSpecial(i, field[i], &val);
if (type == IGNORE_DTF)
continue;
tmask = DTK_M(type);
switch (type)
{
case RESERV:
switch (val)
{
case DTK_CURRENT:
ereport(ERROR,
(errcode(ERRCODE_FEATURE_NOT_SUPPORTED),
errmsg("date/time value \"current\" is no longer supported")));
return DTERR_BAD_FORMAT;
break;
case DTK_NOW:
tmask = (DTK_DATE_M | DTK_TIME_M | DTK_M(TZ));
*dtype = DTK_DATE;
GetCurrentTimeUsec(tm, fsec, tzp);
break;
case DTK_YESTERDAY:
tmask = DTK_DATE_M;
*dtype = DTK_DATE;
GetCurrentDateTime(&cur_tm);
j2date(date2j(cur_tm.tm_year, cur_tm.tm_mon, cur_tm.tm_mday) - 1,
&tm->tm_year, &tm->tm_mon, &tm->tm_mday);
break;
case DTK_TODAY:
tmask = DTK_DATE_M;
*dtype = DTK_DATE;
GetCurrentDateTime(&cur_tm);
tm->tm_year = cur_tm.tm_year;
tm->tm_mon = cur_tm.tm_mon;
tm->tm_mday = cur_tm.tm_mday;
break;
case DTK_TOMORROW:
tmask = DTK_DATE_M;
*dtype = DTK_DATE;
GetCurrentDateTime(&cur_tm);
j2date(date2j(cur_tm.tm_year, cur_tm.tm_mon, cur_tm.tm_mday) + 1,
&tm->tm_year, &tm->tm_mon, &tm->tm_mday);
break;
case DTK_ZULU:
tmask = (DTK_TIME_M | DTK_M(TZ));
*dtype = DTK_DATE;
tm->tm_hour = 0;
tm->tm_min = 0;
tm->tm_sec = 0;
if (tzp != NULL)
*tzp = 0;
break;
default:
*dtype = val;
}
break;
case MONTH:
/*
* already have a (numeric) month? then see if we can
* substitute...
*/
if ((fmask & DTK_M(MONTH)) && !haveTextMonth &&
!(fmask & DTK_M(DAY)) && tm->tm_mon >= 1 &&
tm->tm_mon <= 31)
{
tm->tm_mday = tm->tm_mon;
tmask = DTK_M(DAY);
}
haveTextMonth = TRUE;
tm->tm_mon = val;
break;
case DTZMOD:
/*
* daylight savings time modifier (solves "MET DST"
* syntax)
*/
tmask |= DTK_M(DTZ);
tm->tm_isdst = 1;
if (tzp == NULL)
return DTERR_BAD_FORMAT;
*tzp += val * MINS_PER_HOUR;
break;
case DTZ:
/*
* set mask for TZ here _or_ check for DTZ later when
* getting default timezone
*/
tmask |= DTK_M(TZ);
tm->tm_isdst = 1;
if (tzp == NULL)
return DTERR_BAD_FORMAT;
*tzp = val * MINS_PER_HOUR;
break;
case TZ:
tm->tm_isdst = 0;
if (tzp == NULL)
return DTERR_BAD_FORMAT;
*tzp = val * MINS_PER_HOUR;
break;
case IGNORE_DTF:
break;
case AMPM:
mer = val;
break;
case ADBC:
bc = (val == BC);
break;
case DOW:
tm->tm_wday = val;
break;
case UNITS:
tmask = 0;
ptype = val;
break;
case ISOTIME:
/*
* This is a filler field "t" indicating that the next
* field is time. Try to verify that this is sensible.
*/
tmask = 0;
/* No preceding date? Then quit... */
if ((fmask & DTK_DATE_M) != DTK_DATE_M)
return DTERR_BAD_FORMAT;
/***
* We will need one of the following fields:
* DTK_NUMBER should be hhmmss.fff
* DTK_TIME should be hh:mm:ss.fff
* DTK_DATE should be hhmmss-zz
***/
if (i >= nf - 1 ||
(ftype[i + 1] != DTK_NUMBER &&
ftype[i + 1] != DTK_TIME &&
ftype[i + 1] != DTK_DATE))
return DTERR_BAD_FORMAT;
ptype = val;
break;
case UNKNOWN_FIELD:
/*
* Before giving up and declaring error, check to see
* if it is an all-alpha timezone name.
*/
namedTz = pg_tzset(field[i]);
if (!namedTz)
return DTERR_BAD_FORMAT;
/* we'll apply the zone setting below */
tmask = DTK_M(TZ);
break;
default:
return DTERR_BAD_FORMAT;
}
break;
default:
return DTERR_BAD_FORMAT;
}
if (tmask & fmask)
return DTERR_BAD_FORMAT;
fmask |= tmask;
} /* end loop over fields */
/* do final checking/adjustment of Y/M/D fields */
dterr = ValidateDate(fmask, isjulian, is2digits, bc, tm);
if (dterr)
return dterr;
/* handle AM/PM */
if (mer != HR24 && tm->tm_hour > HOURS_PER_DAY / 2)
return DTERR_FIELD_OVERFLOW;
if (mer == AM && tm->tm_hour == HOURS_PER_DAY / 2)
tm->tm_hour = 0;
else if (mer == PM && tm->tm_hour != HOURS_PER_DAY / 2)
tm->tm_hour += HOURS_PER_DAY / 2;
/* do additional checking for full date specs... */
if (*dtype == DTK_DATE)
{
if ((fmask & DTK_DATE_M) != DTK_DATE_M)
{
if ((fmask & DTK_TIME_M) == DTK_TIME_M)
return 1;
return DTERR_BAD_FORMAT;
}
/*
* If we had a full timezone spec, compute the offset (we could not do
* it before, because we need the date to resolve DST status).
*/
if (namedTz != NULL)
{
/* daylight savings time modifier disallowed with full TZ */
if (fmask & DTK_M(DTZMOD))
return DTERR_BAD_FORMAT;
*tzp = DetermineTimeZoneOffset(tm, namedTz);
}
/* timezone not specified? then find local timezone if possible */
if (tzp != NULL && !(fmask & DTK_M(TZ)))
{
/*
* daylight savings time modifier but no standard timezone? then
* error
*/
if (fmask & DTK_M(DTZMOD))
return DTERR_BAD_FORMAT;
*tzp = DetermineTimeZoneOffset(tm, session_timezone);
}
}
return 0;
}
| int DecodeInterval | ( | char ** | field, | |
| int * | ftype, | |||
| int | nf, | |||
| int | range, | |||
| int * | dtype, | |||
| struct pg_tm * | tm, | |||
| fsec_t * | fsec | |||
| ) |
Definition at line 2857 of file datetime.c.
References AdjustFractDays(), AdjustFractSeconds(), AGO, Assert, CENTURY, ClearPgTm(), DAY, DAYS_PER_MONTH, DECADE, DecodeTime(), DecodeUnits(), DTK_CENTURY, DTK_DATE, DTK_DATE_M, DTK_DAY, DTK_DECADE, DTK_HOUR, DTK_M, DTK_MICROSEC, DTK_MILLENNIUM, DTK_MILLISEC, DTK_MINUTE, DTK_MONTH, DTK_NUMBER, DTK_SECOND, DTK_SPECIAL, DTK_STRING, DTK_TIME, DTK_TZ, DTK_WEEK, DTK_YEAR, HOUR, i, IGNORE_DTF, INTERVAL_MASK, IntervalStyle, INTSTYLE_SQL_STANDARD, MICROSECOND, MILLENNIUM, MILLISECOND, MINUTE, MONTH, MONTHS_PER_YEAR, NULL, RESERV, rint(), SECOND, SECS_PER_DAY, SECS_PER_HOUR, SECS_PER_MINUTE, strtoi(), pg_tm::tm_hour, pg_tm::tm_mday, pg_tm::tm_min, pg_tm::tm_mon, pg_tm::tm_sec, pg_tm::tm_year, TMODULO, UNITS, val, WEEK, and YEAR.
Referenced by interval_in(), PGTYPESinterval_from_asc(), and reltimein().
{
bool is_before = FALSE;
char *cp;
int fmask = 0,
tmask,
type;
int i;
int dterr;
int val;
double fval;
*dtype = DTK_DELTA;
type = IGNORE_DTF;
ClearPgTm(tm, fsec);
/* read through list backwards to pick up units before values */
for (i = nf - 1; i >= 0; i--)
{
switch (ftype[i])
{
case DTK_TIME:
dterr = DecodeTime(field[i], fmask, range,
&tmask, tm, fsec);
if (dterr)
return dterr;
type = DTK_DAY;
break;
case DTK_TZ:
/*
* Timezone means a token with a leading sign character and at
* least one digit; there could be ':', '.', '-' embedded in
* it as well.
*/
Assert(*field[i] == '-' || *field[i] == '+');
/*
* Check for signed hh:mm or hh:mm:ss. If so, process exactly
* like DTK_TIME case above, plus handling the sign.
*/
if (strchr(field[i] + 1, ':') != NULL &&
DecodeTime(field[i] + 1, fmask, range,
&tmask, tm, fsec) == 0)
{
if (*field[i] == '-')
{
/* flip the sign on all fields */
tm->tm_hour = -tm->tm_hour;
tm->tm_min = -tm->tm_min;
tm->tm_sec = -tm->tm_sec;
*fsec = -(*fsec);
}
/*
* Set the next type to be a day, if units are not
* specified. This handles the case of '1 +02:03' since we
* are reading right to left.
*/
type = DTK_DAY;
break;
}
/*
* Otherwise, fall through to DTK_NUMBER case, which can
* handle signed float numbers and signed year-month values.
*/
/* FALL THROUGH */
case DTK_DATE:
case DTK_NUMBER:
if (type == IGNORE_DTF)
{
/* use typmod to decide what rightmost field is */
switch (range)
{
case INTERVAL_MASK(YEAR):
type = DTK_YEAR;
break;
case INTERVAL_MASK(MONTH):
case INTERVAL_MASK(YEAR) | INTERVAL_MASK(MONTH):
type = DTK_MONTH;
break;
case INTERVAL_MASK(DAY):
type = DTK_DAY;
break;
case INTERVAL_MASK(HOUR):
case INTERVAL_MASK(DAY) | INTERVAL_MASK(HOUR):
type = DTK_HOUR;
break;
case INTERVAL_MASK(MINUTE):
case INTERVAL_MASK(HOUR) | INTERVAL_MASK(MINUTE):
case INTERVAL_MASK(DAY) | INTERVAL_MASK(HOUR) | INTERVAL_MASK(MINUTE):
type = DTK_MINUTE;
break;
case INTERVAL_MASK(SECOND):
case INTERVAL_MASK(MINUTE) | INTERVAL_MASK(SECOND):
case INTERVAL_MASK(HOUR) | INTERVAL_MASK(MINUTE) | INTERVAL_MASK(SECOND):
case INTERVAL_MASK(DAY) | INTERVAL_MASK(HOUR) | INTERVAL_MASK(MINUTE) | INTERVAL_MASK(SECOND):
type = DTK_SECOND;
break;
default:
type = DTK_SECOND;
break;
}
}
errno = 0;
val = strtoi(field[i], &cp, 10);
if (errno == ERANGE)
return DTERR_FIELD_OVERFLOW;
if (*cp == '-')
{
/* SQL "years-months" syntax */
int val2;
val2 = strtoi(cp + 1, &cp, 10);
if (errno == ERANGE || val2 < 0 || val2 >= MONTHS_PER_YEAR)
return DTERR_FIELD_OVERFLOW;
if (*cp != '\0')
return DTERR_BAD_FORMAT;
type = DTK_MONTH;
if (*field[i] == '-')
val2 = -val2;
val = val * MONTHS_PER_YEAR + val2;
fval = 0;
}
else if (*cp == '.')
{
errno = 0;
fval = strtod(cp, &cp);
if (*cp != '\0' || errno != 0)
return DTERR_BAD_FORMAT;
if (*field[i] == '-')
fval = -fval;
}
else if (*cp == '\0')
fval = 0;
else
return DTERR_BAD_FORMAT;
tmask = 0; /* DTK_M(type); */
switch (type)
{
case DTK_MICROSEC:
#ifdef HAVE_INT64_TIMESTAMP
*fsec += rint(val + fval);
#else
*fsec += (val + fval) * 1e-6;
#endif
tmask = DTK_M(MICROSECOND);
break;
case DTK_MILLISEC:
/* avoid overflowing the fsec field */
tm->tm_sec += val / 1000;
val -= (val / 1000) * 1000;
#ifdef HAVE_INT64_TIMESTAMP
*fsec += rint((val + fval) * 1000);
#else
*fsec += (val + fval) * 1e-3;
#endif
tmask = DTK_M(MILLISECOND);
break;
case DTK_SECOND:
tm->tm_sec += val;
#ifdef HAVE_INT64_TIMESTAMP
*fsec += rint(fval * 1000000);
#else
*fsec += fval;
#endif
/*
* If any subseconds were specified, consider this
* microsecond and millisecond input as well.
*/
if (fval == 0)
tmask = DTK_M(SECOND);
else
tmask = DTK_ALL_SECS_M;
break;
case DTK_MINUTE:
tm->tm_min += val;
AdjustFractSeconds(fval, tm, fsec, SECS_PER_MINUTE);
tmask = DTK_M(MINUTE);
break;
case DTK_HOUR:
tm->tm_hour += val;
AdjustFractSeconds(fval, tm, fsec, SECS_PER_HOUR);
tmask = DTK_M(HOUR);
type = DTK_DAY; /* set for next field */
break;
case DTK_DAY:
tm->tm_mday += val;
AdjustFractSeconds(fval, tm, fsec, SECS_PER_DAY);
tmask = DTK_M(DAY);
break;
case DTK_WEEK:
tm->tm_mday += val * 7;
AdjustFractDays(fval, tm, fsec, 7);
tmask = DTK_M(WEEK);
break;
case DTK_MONTH:
tm->tm_mon += val;
AdjustFractDays(fval, tm, fsec, DAYS_PER_MONTH);
tmask = DTK_M(MONTH);
break;
case DTK_YEAR:
tm->tm_year += val;
if (fval != 0)
tm->tm_mon += fval * MONTHS_PER_YEAR;
tmask = DTK_M(YEAR);
break;
case DTK_DECADE:
tm->tm_year += val * 10;
if (fval != 0)
tm->tm_mon += fval * MONTHS_PER_YEAR * 10;
tmask = DTK_M(DECADE);
break;
case DTK_CENTURY:
tm->tm_year += val * 100;
if (fval != 0)
tm->tm_mon += fval * MONTHS_PER_YEAR * 100;
tmask = DTK_M(CENTURY);
break;
case DTK_MILLENNIUM:
tm->tm_year += val * 1000;
if (fval != 0)
tm->tm_mon += fval * MONTHS_PER_YEAR * 1000;
tmask = DTK_M(MILLENNIUM);
break;
default:
return DTERR_BAD_FORMAT;
}
break;
case DTK_STRING:
case DTK_SPECIAL:
type = DecodeUnits(i, field[i], &val);
if (type == IGNORE_DTF)
continue;
tmask = 0; /* DTK_M(type); */
switch (type)
{
case UNITS:
type = val;
break;
case AGO:
is_before = TRUE;
type = val;
break;
case RESERV:
tmask = (DTK_DATE_M | DTK_TIME_M);
*dtype = val;
break;
default:
return DTERR_BAD_FORMAT;
}
break;
default:
return DTERR_BAD_FORMAT;
}
if (tmask & fmask)
return DTERR_BAD_FORMAT;
fmask |= tmask;
}
/* ensure that at least one time field has been found */
if (fmask == 0)
return DTERR_BAD_FORMAT;
/* ensure fractional seconds are fractional */
if (*fsec != 0)
{
int sec;
#ifdef HAVE_INT64_TIMESTAMP
sec = *fsec / USECS_PER_SEC;
*fsec -= sec * USECS_PER_SEC;
#else
TMODULO(*fsec, sec, 1.0);
#endif
tm->tm_sec += sec;
}
/*----------
* The SQL standard defines the interval literal
* '-1 1:00:00'
* to mean "negative 1 days and negative 1 hours", while Postgres
* traditionally treats this as meaning "negative 1 days and positive
* 1 hours". In SQL_STANDARD intervalstyle, we apply the leading sign
* to all fields if there are no other explicit signs.
*
* We leave the signs alone if there are additional explicit signs.
* This protects us against misinterpreting postgres-style dump output,
* since the postgres-style output code has always put an explicit sign on
* all fields following a negative field. But note that SQL-spec output
* is ambiguous and can be misinterpreted on load! (So it's best practice
* to dump in postgres style, not SQL style.)
*----------
*/
if (IntervalStyle == INTSTYLE_SQL_STANDARD && *field[0] == '-')
{
/* Check for additional explicit signs */
bool more_signs = false;
for (i = 1; i < nf; i++)
{
if (*field[i] == '-' || *field[i] == '+')
{
more_signs = true;
break;
}
}
if (!more_signs)
{
/*
* Rather than re-determining which field was field[0], just force
* 'em all negative.
*/
if (*fsec > 0)
*fsec = -(*fsec);
if (tm->tm_sec > 0)
tm->tm_sec = -tm->tm_sec;
if (tm->tm_min > 0)
tm->tm_min = -tm->tm_min;
if (tm->tm_hour > 0)
tm->tm_hour = -tm->tm_hour;
if (tm->tm_mday > 0)
tm->tm_mday = -tm->tm_mday;
if (tm->tm_mon > 0)
tm->tm_mon = -tm->tm_mon;
if (tm->tm_year > 0)
tm->tm_year = -tm->tm_year;
}
}
/* finally, AGO negates everything */
if (is_before)
{
*fsec = -(*fsec);
tm->tm_sec = -tm->tm_sec;
tm->tm_min = -tm->tm_min;
tm->tm_hour = -tm->tm_hour;
tm->tm_mday = -tm->tm_mday;
tm->tm_mon = -tm->tm_mon;
tm->tm_year = -tm->tm_year;
}
return 0;
}
Definition at line 3296 of file datetime.c.
References AdjustFractDays(), AdjustFractSeconds(), ClearPgTm(), DAYS_PER_MONTH, ISO8601IntegerWidth(), ParseISO8601Number(), SECS_PER_DAY, SECS_PER_HOUR, SECS_PER_MINUTE, pg_tm::tm_hour, pg_tm::tm_mday, pg_tm::tm_min, pg_tm::tm_mon, pg_tm::tm_sec, pg_tm::tm_year, and val.
Referenced by interval_in(), PGTYPESinterval_from_asc(), and reltimein().
{
bool datepart = true;
bool havefield = false;
*dtype = DTK_DELTA;
ClearPgTm(tm, fsec);
if (strlen(str) < 2 || str[0] != 'P')
return DTERR_BAD_FORMAT;
str++;
while (*str)
{
char *fieldstart;
int val;
double fval;
char unit;
int dterr;
if (*str == 'T') /* T indicates the beginning of the time part */
{
datepart = false;
havefield = false;
str++;
continue;
}
fieldstart = str;
dterr = ParseISO8601Number(str, &str, &val, &fval);
if (dterr)
return dterr;
/*
* Note: we could step off the end of the string here. Code below
* *must* exit the loop if unit == '\0'.
*/
unit = *str++;
if (datepart)
{
switch (unit) /* before T: Y M W D */
{
case 'Y':
tm->tm_year += val;
tm->tm_mon += (fval * MONTHS_PER_YEAR);
break;
case 'M':
tm->tm_mon += val;
AdjustFractDays(fval, tm, fsec, DAYS_PER_MONTH);
break;
case 'W':
tm->tm_mday += val * 7;
AdjustFractDays(fval, tm, fsec, 7);
break;
case 'D':
tm->tm_mday += val;
AdjustFractSeconds(fval, tm, fsec, SECS_PER_DAY);
break;
case 'T': /* ISO 8601 4.4.3.3 Alternative Format / Basic */
case '\0':
if (ISO8601IntegerWidth(fieldstart) == 8 && !havefield)
{
tm->tm_year += val / 10000;
tm->tm_mon += (val / 100) % 100;
tm->tm_mday += val % 100;
AdjustFractSeconds(fval, tm, fsec, SECS_PER_DAY);
if (unit == '\0')
return 0;
datepart = false;
havefield = false;
continue;
}
/* Else fall through to extended alternative format */
case '-': /* ISO 8601 4.4.3.3 Alternative Format,
* Extended */
if (havefield)
return DTERR_BAD_FORMAT;
tm->tm_year += val;
tm->tm_mon += (fval * MONTHS_PER_YEAR);
if (unit == '\0')
return 0;
if (unit == 'T')
{
datepart = false;
havefield = false;
continue;
}
dterr = ParseISO8601Number(str, &str, &val, &fval);
if (dterr)
return dterr;
tm->tm_mon += val;
AdjustFractDays(fval, tm, fsec, DAYS_PER_MONTH);
if (*str == '\0')
return 0;
if (*str == 'T')
{
datepart = false;
havefield = false;
continue;
}
if (*str != '-')
return DTERR_BAD_FORMAT;
str++;
dterr = ParseISO8601Number(str, &str, &val, &fval);
if (dterr)
return dterr;
tm->tm_mday += val;
AdjustFractSeconds(fval, tm, fsec, SECS_PER_DAY);
if (*str == '\0')
return 0;
if (*str == 'T')
{
datepart = false;
havefield = false;
continue;
}
return DTERR_BAD_FORMAT;
default:
/* not a valid date unit suffix */
return DTERR_BAD_FORMAT;
}
}
else
{
switch (unit) /* after T: H M S */
{
case 'H':
tm->tm_hour += val;
AdjustFractSeconds(fval, tm, fsec, SECS_PER_HOUR);
break;
case 'M':
tm->tm_min += val;
AdjustFractSeconds(fval, tm, fsec, SECS_PER_MINUTE);
break;
case 'S':
tm->tm_sec += val;
AdjustFractSeconds(fval, tm, fsec, 1);
break;
case '\0': /* ISO 8601 4.4.3.3 Alternative Format */
if (ISO8601IntegerWidth(fieldstart) == 6 && !havefield)
{
tm->tm_hour += val / 10000;
tm->tm_min += (val / 100) % 100;
tm->tm_sec += val % 100;
AdjustFractSeconds(fval, tm, fsec, 1);
return 0;
}
/* Else fall through to extended alternative format */
case ':': /* ISO 8601 4.4.3.3 Alternative Format,
* Extended */
if (havefield)
return DTERR_BAD_FORMAT;
tm->tm_hour += val;
AdjustFractSeconds(fval, tm, fsec, SECS_PER_HOUR);
if (unit == '\0')
return 0;
dterr = ParseISO8601Number(str, &str, &val, &fval);
if (dterr)
return dterr;
tm->tm_min += val;
AdjustFractSeconds(fval, tm, fsec, SECS_PER_MINUTE);
if (*str == '\0')
return 0;
if (*str != ':')
return DTERR_BAD_FORMAT;
str++;
dterr = ParseISO8601Number(str, &str, &val, &fval);
if (dterr)
return dterr;
tm->tm_sec += val;
AdjustFractSeconds(fval, tm, fsec, 1);
if (*str == '\0')
return 0;
return DTERR_BAD_FORMAT;
default:
/* not a valid time unit suffix */
return DTERR_BAD_FORMAT;
}
}
havefield = true;
}
return 0;
}
| static int DecodeNumber | ( | int | flen, | |
| char * | field, | |||
| bool | haveTextMonth, | |||
| int | fmask, | |||
| int * | tmask, | |||
| struct pg_tm * | tm, | |||
| fsec_t * | fsec, | |||
| bool * | is2digits | |||
| ) | [static] |
Definition at line 2431 of file datetime.c.
References DateOrder, DATEORDER_DMY, DATEORDER_YMD, DAY, DecodeNumberField(), DOY, DTK_DATE_M, DTK_M, MONTH, ParseFractionalSecond(), strtoi(), pg_tm::tm_mday, pg_tm::tm_mon, pg_tm::tm_yday, pg_tm::tm_year, val, and YEAR.
Referenced by DecodeDate(), DecodeDateTime(), and DecodeTimeOnly().
{
int val;
char *cp;
int dterr;
*tmask = 0;
errno = 0;
val = strtoi(str, &cp, 10);
if (errno == ERANGE)
return DTERR_FIELD_OVERFLOW;
if (cp == str)
return DTERR_BAD_FORMAT;
if (*cp == '.')
{
/*
* More than two digits before decimal point? Then could be a date or
* a run-together time: 2001.360 20011225 040506.789
*/
if (cp - str > 2)
{
dterr = DecodeNumberField(flen, str,
(fmask | DTK_DATE_M),
tmask, tm,
fsec, is2digits);
if (dterr < 0)
return dterr;
return 0;
}
dterr = ParseFractionalSecond(cp, fsec);
if (dterr)
return dterr;
}
else if (*cp != '\0')
return DTERR_BAD_FORMAT;
/* Special case for day of year */
if (flen == 3 && (fmask & DTK_DATE_M) == DTK_M(YEAR) && val >= 1 &&
val <= 366)
{
*tmask = (DTK_M(DOY) | DTK_M(MONTH) | DTK_M(DAY));
tm->tm_yday = val;
/* tm_mon and tm_mday can't actually be set yet ... */
return 0;
}
/* Switch based on what we have so far */
switch (fmask & DTK_DATE_M)
{
case 0:
/*
* Nothing so far; make a decision about what we think the input
* is. There used to be lots of heuristics here, but the
* consensus now is to be paranoid. It *must* be either
* YYYY-MM-DD (with a more-than-two-digit year field), or the
* field order defined by DateOrder.
*/
if (flen >= 3 || DateOrder == DATEORDER_YMD)
{
*tmask = DTK_M(YEAR);
tm->tm_year = val;
}
else if (DateOrder == DATEORDER_DMY)
{
*tmask = DTK_M(DAY);
tm->tm_mday = val;
}
else
{
*tmask = DTK_M(MONTH);
tm->tm_mon = val;
}
break;
case (DTK_M(YEAR)):
/* Must be at second field of YY-MM-DD */
*tmask = DTK_M(MONTH);
tm->tm_mon = val;
break;
case (DTK_M(MONTH)):
if (haveTextMonth)
{
/*
* We are at the first numeric field of a date that included a
* textual month name. We want to support the variants
* MON-DD-YYYY, DD-MON-YYYY, and YYYY-MON-DD as unambiguous
* inputs. We will also accept MON-DD-YY or DD-MON-YY in
* either DMY or MDY modes, as well as YY-MON-DD in YMD mode.
*/
if (flen >= 3 || DateOrder == DATEORDER_YMD)
{
*tmask = DTK_M(YEAR);
tm->tm_year = val;
}
else
{
*tmask = DTK_M(DAY);
tm->tm_mday = val;
}
}
else
{
/* Must be at second field of MM-DD-YY */
*tmask = DTK_M(DAY);
tm->tm_mday = val;
}
break;
case (DTK_M(YEAR) | DTK_M(MONTH)):
if (haveTextMonth)
{
/* Need to accept DD-MON-YYYY even in YMD mode */
if (flen >= 3 && *is2digits)
{
/* Guess that first numeric field is day was wrong */
*tmask = DTK_M(DAY); /* YEAR is already set */
tm->tm_mday = tm->tm_year;
tm->tm_year = val;
*is2digits = FALSE;
}
else
{
*tmask = DTK_M(DAY);
tm->tm_mday = val;
}
}
else
{
/* Must be at third field of YY-MM-DD */
*tmask = DTK_M(DAY);
tm->tm_mday = val;
}
break;
case (DTK_M(DAY)):
/* Must be at second field of DD-MM-YY */
*tmask = DTK_M(MONTH);
tm->tm_mon = val;
break;
case (DTK_M(MONTH) | DTK_M(DAY)):
/* Must be at third field of DD-MM-YY or MM-DD-YY */
*tmask = DTK_M(YEAR);
tm->tm_year = val;
break;
case (DTK_M(YEAR) | DTK_M(MONTH) | DTK_M(DAY)):
/* we have all the date, so it must be a time field */
dterr = DecodeNumberField(flen, str, fmask,
tmask, tm,
fsec, is2digits);
if (dterr < 0)
return dterr;
return 0;
default:
/* Anything else is bogus input */
return DTERR_BAD_FORMAT;
}
/*
* When processing a year field, mark it for adjustment if it's only one
* or two digits.
*/
if (*tmask == DTK_M(YEAR))
*is2digits = (flen <= 2);
return 0;
}
| static int DecodeNumberField | ( | int | len, | |
| char * | str, | |||
| int | fmask, | |||
| int * | tmask, | |||
| struct pg_tm * | tm, | |||
| fsec_t * | fsec, | |||
| bool * | is2digits | |||
| ) | [static] |
Definition at line 2616 of file datetime.c.
References DTK_DATE_M, DTK_TIME_M, NULL, rint(), pg_tm::tm_hour, pg_tm::tm_mday, pg_tm::tm_min, pg_tm::tm_mon, pg_tm::tm_sec, and pg_tm::tm_year.
Referenced by DecodeDateTime(), DecodeNumber(), and DecodeTimeOnly().
{
char *cp;
/*
* Have a decimal point? Then this is a date or something with a seconds
* field...
*/
if ((cp = strchr(str, '.')) != NULL)
{
/*
* Can we use ParseFractionalSecond here? Not clear whether trailing
* junk should be rejected ...
*/
double frac;
errno = 0;
frac = strtod(cp, NULL);
if (errno != 0)
return DTERR_BAD_FORMAT;
#ifdef HAVE_INT64_TIMESTAMP
*fsec = rint(frac * 1000000);
#else
*fsec = frac;
#endif
/* Now truncate off the fraction for further processing */
*cp = '\0';
len = strlen(str);
}
/* No decimal point and no complete date yet? */
else if ((fmask & DTK_DATE_M) != DTK_DATE_M)
{
/* yyyymmdd? */
if (len == 8)
{
*tmask = DTK_DATE_M;
tm->tm_mday = atoi(str + 6);
*(str + 6) = '\0';
tm->tm_mon = atoi(str + 4);
*(str + 4) = '\0';
tm->tm_year = atoi(str + 0);
return DTK_DATE;
}
/* yymmdd? */
else if (len == 6)
{
*tmask = DTK_DATE_M;
tm->tm_mday = atoi(str + 4);
*(str + 4) = '\0';
tm->tm_mon = atoi(str + 2);
*(str + 2) = '\0';
tm->tm_year = atoi(str + 0);
*is2digits = TRUE;
return DTK_DATE;
}
}
/* not all time fields are specified? */
if ((fmask & DTK_TIME_M) != DTK_TIME_M)
{
/* hhmmss */
if (len == 6)
{
*tmask = DTK_TIME_M;
tm->tm_sec = atoi(str + 4);
*(str + 4) = '\0';
tm->tm_min = atoi(str + 2);
*(str + 2) = '\0';
tm->tm_hour = atoi(str + 0);
return DTK_TIME;
}
/* hhmm? */
else if (len == 4)
{
*tmask = DTK_TIME_M;
tm->tm_sec = 0;
tm->tm_min = atoi(str + 2);
*(str + 2) = '\0';
tm->tm_hour = atoi(str + 0);
return DTK_TIME;
}
}
return DTERR_BAD_FORMAT;
}
| int DecodeSpecial | ( | int | field, | |
| char * | lowtoken, | |||
| int * | val | |||
| ) |
Definition at line 2789 of file datetime.c.
References datebsearch(), DTZ, DTZMOD, FROMVAL, NULL, szdatetktbl, sztimezonetktbl, datetkn::token, TOKMAXLEN, datetkn::type, TZ, and datetkn::value.
Referenced by DecodeDate(), DecodeDateTime(), DecodePosixTimezone(), DecodeTimeOnly(), interval_part(), time_part(), timestamp_part(), timestamp_zone(), timestamptz_part(), timestamptz_zone(), timetz_part(), timetz_zone(), and tstz_to_ts_gmt().
{
int type;
const datetkn *tp;
tp = datecache[field];
if (tp == NULL || strncmp(lowtoken, tp->token, TOKMAXLEN) != 0)
{
tp = datebsearch(lowtoken, timezonetktbl, sztimezonetktbl);
if (tp == NULL)
tp = datebsearch(lowtoken, datetktbl, szdatetktbl);
}
if (tp == NULL)
{
type = UNKNOWN_FIELD;
*val = 0;
}
else
{
datecache[field] = tp;
type = tp->type;
switch (type)
{
case TZ:
case DTZ:
case DTZMOD:
*val = FROMVAL(tp);
break;
default:
*val = tp->value;
break;
}
}
return type;
}
| static int DecodeTime | ( | char * | str, | |
| int | fmask, | |||
| int | range, | |||
| int * | tmask, | |||
| struct pg_tm * | tm, | |||
| fsec_t * | fsec | |||
| ) | [static] |
Definition at line 2348 of file datetime.c.
References INT64CONST, INTERVAL_MASK, MINS_PER_HOUR, MINUTE, ParseFractionalSecond(), SECOND, SECS_PER_MINUTE, strtoi(), pg_tm::tm_hour, pg_tm::tm_min, pg_tm::tm_sec, and USECS_PER_SEC.
Referenced by DecodeDateTime(), DecodeInterval(), and DecodeTimeOnly().
{
char *cp;
int dterr;
*tmask = DTK_TIME_M;
errno = 0;
tm->tm_hour = strtoi(str, &cp, 10);
if (errno == ERANGE)
return DTERR_FIELD_OVERFLOW;
if (*cp != ':')
return DTERR_BAD_FORMAT;
errno = 0;
tm->tm_min = strtoi(cp + 1, &cp, 10);
if (errno == ERANGE)
return DTERR_FIELD_OVERFLOW;
if (*cp == '\0')
{
tm->tm_sec = 0;
*fsec = 0;
/* If it's a MINUTE TO SECOND interval, take 2 fields as being mm:ss */
if (range == (INTERVAL_MASK(MINUTE) | INTERVAL_MASK(SECOND)))
{
tm->tm_sec = tm->tm_min;
tm->tm_min = tm->tm_hour;
tm->tm_hour = 0;
}
}
else if (*cp == '.')
{
/* always assume mm:ss.sss is MINUTE TO SECOND */
dterr = ParseFractionalSecond(cp, fsec);
if (dterr)
return dterr;
tm->tm_sec = tm->tm_min;
tm->tm_min = tm->tm_hour;
tm->tm_hour = 0;
}
else if (*cp == ':')
{
errno = 0;
tm->tm_sec = strtoi(cp + 1, &cp, 10);
if (errno == ERANGE)
return DTERR_FIELD_OVERFLOW;
if (*cp == '\0')
*fsec = 0;
else if (*cp == '.')
{
dterr = ParseFractionalSecond(cp, fsec);
if (dterr)
return dterr;
}
else
return DTERR_BAD_FORMAT;
}
else
return DTERR_BAD_FORMAT;
/* do a sanity check */
#ifdef HAVE_INT64_TIMESTAMP
if (tm->tm_hour < 0 || tm->tm_min < 0 || tm->tm_min > MINS_PER_HOUR - 1 ||
tm->tm_sec < 0 || tm->tm_sec > SECS_PER_MINUTE ||
*fsec < INT64CONST(0) ||
*fsec > USECS_PER_SEC)
return DTERR_FIELD_OVERFLOW;
#else
if (tm->tm_hour < 0 || tm->tm_min < 0 || tm->tm_min > MINS_PER_HOUR - 1 ||
tm->tm_sec < 0 || tm->tm_sec > SECS_PER_MINUTE ||
*fsec < 0 || *fsec > 1)
return DTERR_FIELD_OVERFLOW;
#endif
return 0;
}
| int DecodeTimeOnly | ( | char ** | field, | |
| int * | ftype, | |||
| int | nf, | |||
| int * | dtype, | |||
| struct pg_tm * | tm, | |||
| fsec_t * | fsec, | |||
| int * | tzp | |||
| ) |
Definition at line 1569 of file datetime.c.
References ADBC, AM, AMPM, DAY, DecodeDate(), DecodeNumber(), DecodeNumberField(), DecodeSpecial(), DecodeTime(), DecodeTimezone(), DetermineTimeZoneOffset(), dt2time(), DTERR_BAD_FORMAT, DTK_CURRENT, DTK_DATE, DTK_DATE_M, DTK_DAY, DTK_HOUR, DTK_JULIAN, DTK_M, DTK_MINUTE, DTK_MONTH, DTK_NOW, DTK_NUMBER, DTK_SECOND, DTK_SPECIAL, DTK_STRING, DTK_TIME, DTK_TIME_M, DTK_TZ, DTK_YEAR, DTK_ZULU, DTZ, DTZMOD, ereport, errcode(), errmsg(), ERROR, FALSE, GetCurrentDateTime(), GetCurrentTimeUsec(), HOUR, HOURS_PER_DAY, HR24, i, IGNORE_DTF, INT64CONST, INTERVAL_FULL_RANGE, ISOTIME, j2date(), MINS_PER_HOUR, MINUTE, MONTH, NULL, ParseFractionalSecond(), pg_get_timezone_offset(), pg_tzset(), PM, RESERV, SECOND, SECS_PER_MINUTE, session_timezone, strtoi(), pg_tm::tm_hour, pg_tm::tm_isdst, pg_tm::tm_mday, pg_tm::tm_min, pg_tm::tm_mon, pg_tm::tm_sec, pg_tm::tm_year, TZ, UNITS, UNKNOWN_FIELD, USECS_PER_SEC, val, ValidateDate(), and YEAR.
Referenced by time_in(), and timetz_in().
{
int fmask = 0,
tmask,
type;
int ptype = 0; /* "prefix type" for ISO h04mm05s06 format */
int i;
int val;
int dterr;
bool isjulian = FALSE;
bool is2digits = FALSE;
bool bc = FALSE;
int mer = HR24;
pg_tz *namedTz = NULL;
*dtype = DTK_TIME;
tm->tm_hour = 0;
tm->tm_min = 0;
tm->tm_sec = 0;
*fsec = 0;
/* don't know daylight savings time status apriori */
tm->tm_isdst = -1;
if (tzp != NULL)
*tzp = 0;
for (i = 0; i < nf; i++)
{
switch (ftype[i])
{
case DTK_DATE:
/*
* Time zone not allowed? Then should not accept dates or time
* zones no matter what else!
*/
if (tzp == NULL)
return DTERR_BAD_FORMAT;
/* Under limited circumstances, we will accept a date... */
if (i == 0 && nf >= 2 &&
(ftype[nf - 1] == DTK_DATE || ftype[1] == DTK_TIME))
{
dterr = DecodeDate(field[i], fmask,
&tmask, &is2digits, tm);
if (dterr)
return dterr;
}
/* otherwise, this is a time and/or time zone */
else
{
if (isdigit((unsigned char) *field[i]))
{
char *cp;
/*
* Starts with a digit but we already have a time
* field? Then we are in trouble with time already...
*/
if ((fmask & DTK_TIME_M) == DTK_TIME_M)
return DTERR_BAD_FORMAT;
/*
* Should not get here and fail. Sanity check only...
*/
if ((cp = strchr(field[i], '-')) == NULL)
return DTERR_BAD_FORMAT;
/* Get the time zone from the end of the string */
dterr = DecodeTimezone(cp, tzp);
if (dterr)
return dterr;
*cp = '\0';
/*
* Then read the rest of the field as a concatenated
* time
*/
dterr = DecodeNumberField(strlen(field[i]), field[i],
(fmask | DTK_DATE_M),
&tmask, tm,
fsec, &is2digits);
if (dterr < 0)
return dterr;
ftype[i] = dterr;
tmask |= DTK_M(TZ);
}
else
{
namedTz = pg_tzset(field[i]);
if (!namedTz)
{
/*
* We should return an error code instead of
* ereport'ing directly, but then there is no way
* to report the bad time zone name.
*/
ereport(ERROR,
(errcode(ERRCODE_INVALID_PARAMETER_VALUE),
errmsg("time zone \"%s\" not recognized",
field[i])));
}
/* we'll apply the zone setting below */
ftype[i] = DTK_TZ;
tmask = DTK_M(TZ);
}
}
break;
case DTK_TIME:
dterr = DecodeTime(field[i], (fmask | DTK_DATE_M),
INTERVAL_FULL_RANGE,
&tmask, tm, fsec);
if (dterr)
return dterr;
break;
case DTK_TZ:
{
int tz;
if (tzp == NULL)
return DTERR_BAD_FORMAT;
dterr = DecodeTimezone(field[i], &tz);
if (dterr)
return dterr;
*tzp = tz;
tmask = DTK_M(TZ);
}
break;
case DTK_NUMBER:
/*
* Was this an "ISO time" with embedded field labels? An
* example is "h04m05s06" - thomas 2001-02-04
*/
if (ptype != 0)
{
char *cp;
int val;
/* Only accept a date under limited circumstances */
switch (ptype)
{
case DTK_JULIAN:
case DTK_YEAR:
case DTK_MONTH:
case DTK_DAY:
if (tzp == NULL)
return DTERR_BAD_FORMAT;
default:
break;
}
errno = 0;
val = strtoi(field[i], &cp, 10);
if (errno == ERANGE)
return DTERR_FIELD_OVERFLOW;
/*
* only a few kinds are allowed to have an embedded
* decimal
*/
if (*cp == '.')
switch (ptype)
{
case DTK_JULIAN:
case DTK_TIME:
case DTK_SECOND:
break;
default:
return DTERR_BAD_FORMAT;
break;
}
else if (*cp != '\0')
return DTERR_BAD_FORMAT;
switch (ptype)
{
case DTK_YEAR:
tm->tm_year = val;
tmask = DTK_M(YEAR);
break;
case DTK_MONTH:
/*
* already have a month and hour? then assume
* minutes
*/
if ((fmask & DTK_M(MONTH)) != 0 &&
(fmask & DTK_M(HOUR)) != 0)
{
tm->tm_min = val;
tmask = DTK_M(MINUTE);
}
else
{
tm->tm_mon = val;
tmask = DTK_M(MONTH);
}
break;
case DTK_DAY:
tm->tm_mday = val;
tmask = DTK_M(DAY);
break;
case DTK_HOUR:
tm->tm_hour = val;
tmask = DTK_M(HOUR);
break;
case DTK_MINUTE:
tm->tm_min = val;
tmask = DTK_M(MINUTE);
break;
case DTK_SECOND:
tm->tm_sec = val;
tmask = DTK_M(SECOND);
if (*cp == '.')
{
dterr = ParseFractionalSecond(cp, fsec);
if (dterr)
return dterr;
tmask = DTK_ALL_SECS_M;
}
break;
case DTK_TZ:
tmask = DTK_M(TZ);
dterr = DecodeTimezone(field[i], tzp);
if (dterr)
return dterr;
break;
case DTK_JULIAN:
/* previous field was a label for "julian date" */
if (val < 0)
return DTERR_FIELD_OVERFLOW;
tmask = DTK_DATE_M;
j2date(val, &tm->tm_year, &tm->tm_mon, &tm->tm_mday);
isjulian = TRUE;
if (*cp == '.')
{
double time;
errno = 0;
time = strtod(cp, &cp);
if (*cp != '\0' || errno != 0)
return DTERR_BAD_FORMAT;
#ifdef HAVE_INT64_TIMESTAMP
time *= USECS_PER_DAY;
#else
time *= SECS_PER_DAY;
#endif
dt2time(time,
&tm->tm_hour, &tm->tm_min,
&tm->tm_sec, fsec);
tmask |= DTK_TIME_M;
}
break;
case DTK_TIME:
/* previous field was "t" for ISO time */
dterr = DecodeNumberField(strlen(field[i]), field[i],
(fmask | DTK_DATE_M),
&tmask, tm,
fsec, &is2digits);
if (dterr < 0)
return dterr;
ftype[i] = dterr;
if (tmask != DTK_TIME_M)
return DTERR_BAD_FORMAT;
break;
default:
return DTERR_BAD_FORMAT;
break;
}
ptype = 0;
*dtype = DTK_DATE;
}
else
{
char *cp;
int flen;
flen = strlen(field[i]);
cp = strchr(field[i], '.');
/* Embedded decimal? */
if (cp != NULL)
{
/*
* Under limited circumstances, we will accept a
* date...
*/
if (i == 0 && nf >= 2 && ftype[nf - 1] == DTK_DATE)
{
dterr = DecodeDate(field[i], fmask,
&tmask, &is2digits, tm);
if (dterr)
return dterr;
}
/* embedded decimal and several digits before? */
else if (flen - strlen(cp) > 2)
{
/*
* Interpret as a concatenated date or time Set
* the type field to allow decoding other fields
* later. Example: 20011223 or 040506
*/
dterr = DecodeNumberField(flen, field[i],
(fmask | DTK_DATE_M),
&tmask, tm,
fsec, &is2digits);
if (dterr < 0)
return dterr;
ftype[i] = dterr;
}
else
return DTERR_BAD_FORMAT;
}
else if (flen > 4)
{
dterr = DecodeNumberField(flen, field[i],
(fmask | DTK_DATE_M),
&tmask, tm,
fsec, &is2digits);
if (dterr < 0)
return dterr;
ftype[i] = dterr;
}
/* otherwise it is a single date/time field... */
else
{
dterr = DecodeNumber(flen, field[i],
FALSE,
(fmask | DTK_DATE_M),
&tmask, tm,
fsec, &is2digits);
if (dterr)
return dterr;
}
}
break;
case DTK_STRING:
case DTK_SPECIAL:
type = DecodeSpecial(i, field[i], &val);
if (type == IGNORE_DTF)
continue;
tmask = DTK_M(type);
switch (type)
{
case RESERV:
switch (val)
{
case DTK_CURRENT:
ereport(ERROR,
(errcode(ERRCODE_FEATURE_NOT_SUPPORTED),
errmsg("date/time value \"current\" is no longer supported")));
return DTERR_BAD_FORMAT;
break;
case DTK_NOW:
tmask = DTK_TIME_M;
*dtype = DTK_TIME;
GetCurrentTimeUsec(tm, fsec, NULL);
break;
case DTK_ZULU:
tmask = (DTK_TIME_M | DTK_M(TZ));
*dtype = DTK_TIME;
tm->tm_hour = 0;
tm->tm_min = 0;
tm->tm_sec = 0;
tm->tm_isdst = 0;
break;
default:
return DTERR_BAD_FORMAT;
}
break;
case DTZMOD:
/*
* daylight savings time modifier (solves "MET DST"
* syntax)
*/
tmask |= DTK_M(DTZ);
tm->tm_isdst = 1;
if (tzp == NULL)
return DTERR_BAD_FORMAT;
*tzp += val * MINS_PER_HOUR;
break;
case DTZ:
/*
* set mask for TZ here _or_ check for DTZ later when
* getting default timezone
*/
tmask |= DTK_M(TZ);
tm->tm_isdst = 1;
if (tzp == NULL)
return DTERR_BAD_FORMAT;
*tzp = val * MINS_PER_HOUR;
ftype[i] = DTK_TZ;
break;
case TZ:
tm->tm_isdst = 0;
if (tzp == NULL)
return DTERR_BAD_FORMAT;
*tzp = val * MINS_PER_HOUR;
ftype[i] = DTK_TZ;
break;
case IGNORE_DTF:
break;
case AMPM:
mer = val;
break;
case ADBC:
bc = (val == BC);
break;
case UNITS:
tmask = 0;
ptype = val;
break;
case ISOTIME:
tmask = 0;
/***
* We will need one of the following fields:
* DTK_NUMBER should be hhmmss.fff
* DTK_TIME should be hh:mm:ss.fff
* DTK_DATE should be hhmmss-zz
***/
if (i >= nf - 1 ||
(ftype[i + 1] != DTK_NUMBER &&
ftype[i + 1] != DTK_TIME &&
ftype[i + 1] != DTK_DATE))
return DTERR_BAD_FORMAT;
ptype = val;
break;
case UNKNOWN_FIELD:
/*
* Before giving up and declaring error, check to see
* if it is an all-alpha timezone name.
*/
namedTz = pg_tzset(field[i]);
if (!namedTz)
return DTERR_BAD_FORMAT;
/* we'll apply the zone setting below */
tmask = DTK_M(TZ);
break;
default:
return DTERR_BAD_FORMAT;
}
break;
default:
return DTERR_BAD_FORMAT;
}
if (tmask & fmask)
return DTERR_BAD_FORMAT;
fmask |= tmask;
} /* end loop over fields */
/* do final checking/adjustment of Y/M/D fields */
dterr = ValidateDate(fmask, isjulian, is2digits, bc, tm);
if (dterr)
return dterr;
/* handle AM/PM */
if (mer != HR24 && tm->tm_hour > HOURS_PER_DAY / 2)
return DTERR_FIELD_OVERFLOW;
if (mer == AM && tm->tm_hour == HOURS_PER_DAY / 2)
tm->tm_hour = 0;
else if (mer == PM && tm->tm_hour != HOURS_PER_DAY / 2)
tm->tm_hour += HOURS_PER_DAY / 2;
if (tm->tm_hour < 0 || tm->tm_min < 0 || tm->tm_min > MINS_PER_HOUR - 1 ||
tm->tm_sec < 0 || tm->tm_sec > SECS_PER_MINUTE ||
tm->tm_hour > HOURS_PER_DAY ||
/* test for > 24:00:00 */
(tm->tm_hour == HOURS_PER_DAY &&
(tm->tm_min > 0 || tm->tm_sec > 0 || *fsec > 0)) ||
#ifdef HAVE_INT64_TIMESTAMP
*fsec < INT64CONST(0) || *fsec > USECS_PER_SEC
#else
*fsec < 0 || *fsec > 1
#endif
)
return DTERR_FIELD_OVERFLOW;
if ((fmask & DTK_TIME_M) != DTK_TIME_M)
return DTERR_BAD_FORMAT;
/*
* If we had a full timezone spec, compute the offset (we could not do it
* before, because we may need the date to resolve DST status).
*/
if (namedTz != NULL)
{
long int gmtoff;
/* daylight savings time modifier disallowed with full TZ */
if (fmask & DTK_M(DTZMOD))
return DTERR_BAD_FORMAT;
/* if non-DST zone, we do not need to know the date */
if (pg_get_timezone_offset(namedTz, &gmtoff))
{
*tzp = -(int) gmtoff;
}
else
{
/* a date has to be specified */
if ((fmask & DTK_DATE_M) != DTK_DATE_M)
return DTERR_BAD_FORMAT;
*tzp = DetermineTimeZoneOffset(tm, namedTz);
}
}
/* timezone not specified? then find local timezone if possible */
if (tzp != NULL && !(fmask & DTK_M(TZ)))
{
struct pg_tm tt,
*tmp = &tt;
/*
* daylight savings time modifier but no standard timezone? then error
*/
if (fmask & DTK_M(DTZMOD))
return DTERR_BAD_FORMAT;
if ((fmask & DTK_DATE_M) == 0)
GetCurrentDateTime(tmp);
else
{
tmp->tm_year = tm->tm_year;
tmp->tm_mon = tm->tm_mon;
tmp->tm_mday = tm->tm_mday;
}
tmp->tm_hour = tm->tm_hour;
tmp->tm_min = tm->tm_min;
tmp->tm_sec = tm->tm_sec;
*tzp = DetermineTimeZoneOffset(tmp, session_timezone);
tm->tm_isdst = tmp->tm_isdst;
}
return 0;
}
| static int DecodeTimezone | ( | char * | str, | |
| int * | tzp | |||
| ) | [static] |
Definition at line 2717 of file datetime.c.
References MAX_TZDISP_HOUR, MINS_PER_HOUR, SECS_PER_MINUTE, and strtoi().
Referenced by DecodeDateTime(), and DecodeTimeOnly().
{
int tz;
int hr,
min,
sec = 0;
char *cp;
/* leading character must be "+" or "-" */
if (*str != '+' && *str != '-')
return DTERR_BAD_FORMAT;
errno = 0;
hr = strtoi(str + 1, &cp, 10);
if (errno == ERANGE)
return DTERR_TZDISP_OVERFLOW;
/* explicit delimiter? */
if (*cp == ':')
{
errno = 0;
min = strtoi(cp + 1, &cp, 10);
if (errno == ERANGE)
return DTERR_TZDISP_OVERFLOW;
if (*cp == ':')
{
errno = 0;
sec = strtoi(cp + 1, &cp, 10);
if (errno == ERANGE)
return DTERR_TZDISP_OVERFLOW;
}
}
/* otherwise, might have run things together... */
else if (*cp == '\0' && strlen(str) > 3)
{
min = hr % 100;
hr = hr / 100;
/* we could, but don't, support a run-together hhmmss format */
}
else
min = 0;
/* Range-check the values; see notes in datatype/timestamp.h */
if (hr < 0 || hr > MAX_TZDISP_HOUR)
return DTERR_TZDISP_OVERFLOW;
if (min < 0 || min >= MINS_PER_HOUR)
return DTERR_TZDISP_OVERFLOW;
if (sec < 0 || sec >= SECS_PER_MINUTE)
return DTERR_TZDISP_OVERFLOW;
tz = (hr * MINS_PER_HOUR + min) * SECS_PER_MINUTE + sec;
if (*str == '-')
tz = -tz;
*tzp = -tz;
if (*cp != '\0')
return DTERR_BAD_FORMAT;
return 0;
}
| int DecodeUnits | ( | int | field, | |
| char * | lowtoken, | |||
| int * | val | |||
| ) |
Definition at line 3498 of file datetime.c.
Referenced by DecodeInterval(), interval_part(), interval_trunc(), time_part(), timestamp_part(), timestamp_trunc(), timestamptz_part(), timestamptz_trunc(), and timetz_part().
{
int type;
const datetkn *tp;
tp = deltacache[field];
if (tp == NULL || strncmp(lowtoken, tp->token, TOKMAXLEN) != 0)
{
tp = datebsearch(lowtoken, deltatktbl, szdeltatktbl);
}
if (tp == NULL)
{
type = UNKNOWN_FIELD;
*val = 0;
}
else
{
deltacache[field] = tp;
type = tp->type;
if (type == TZ || type == DTZ)
*val = FROMVAL(tp);
else
*val = tp->value;
}
return type;
} /* DecodeUnits() */
Definition at line 1441 of file datetime.c.
References CTimeZone, date2j(), HasCTZSet, IS_VALID_JULIAN, pg_next_dst_boundary(), SECS_PER_DAY, SECS_PER_MINUTE, session_timezone, pg_tm::tm_hour, pg_tm::tm_isdst, pg_tm::tm_mday, pg_tm::tm_min, pg_tm::tm_mon, pg_tm::tm_sec, and pg_tm::tm_year.
Referenced by date2timestamptz(), DecodeDateTime(), DecodeTimeOnly(), time_timetz(), timestamp2timestamptz(), timestamp_abstime(), timestamp_zone(), timestamptz_pl_interval(), timestamptz_trunc(), and to_timestamp().
{
int date,
sec;
pg_time_t day,
mytime,
prevtime,
boundary,
beforetime,
aftertime;
long int before_gmtoff,
after_gmtoff;
int before_isdst,
after_isdst;
int res;
if (tzp == session_timezone && HasCTZSet)
{
tm->tm_isdst = 0; /* for lack of a better idea */
return CTimeZone;
}
/*
* First, generate the pg_time_t value corresponding to the given
* y/m/d/h/m/s taken as GMT time. If this overflows, punt and decide the
* timezone is GMT. (We only need to worry about overflow on machines
* where pg_time_t is 32 bits.)
*/
if (!IS_VALID_JULIAN(tm->tm_year, tm->tm_mon, tm->tm_mday))
goto overflow;
date = date2j(tm->tm_year, tm->tm_mon, tm->tm_mday) - UNIX_EPOCH_JDATE;
day = ((pg_time_t) date) * SECS_PER_DAY;
if (day / SECS_PER_DAY != date)
goto overflow;
sec = tm->tm_sec + (tm->tm_min + tm->tm_hour * MINS_PER_HOUR) * SECS_PER_MINUTE;
mytime = day + sec;
/* since sec >= 0, overflow could only be from +day to -mytime */
if (mytime < 0 && day > 0)
goto overflow;
/*
* Find the DST time boundary just before or following the target time. We
* assume that all zones have GMT offsets less than 24 hours, and that DST
* boundaries can't be closer together than 48 hours, so backing up 24
* hours and finding the "next" boundary will work.
*/
prevtime = mytime - SECS_PER_DAY;
if (mytime < 0 && prevtime > 0)
goto overflow;
res = pg_next_dst_boundary(&prevtime,
&before_gmtoff, &before_isdst,
&boundary,
&after_gmtoff, &after_isdst,
tzp);
if (res < 0)
goto overflow; /* failure? */
if (res == 0)
{
/* Non-DST zone, life is simple */
tm->tm_isdst = before_isdst;
return -(int) before_gmtoff;
}
/*
* Form the candidate pg_time_t values with local-time adjustment
*/
beforetime = mytime - before_gmtoff;
if ((before_gmtoff > 0 &&
mytime < 0 && beforetime > 0) ||
(before_gmtoff <= 0 &&
mytime > 0 && beforetime < 0))
goto overflow;
aftertime = mytime - after_gmtoff;
if ((after_gmtoff > 0 &&
mytime < 0 && aftertime > 0) ||
(after_gmtoff <= 0 &&
mytime > 0 && aftertime < 0))
goto overflow;
/*
* If both before or both after the boundary time, we know what to do
*/
if (beforetime <= boundary && aftertime < boundary)
{
tm->tm_isdst = before_isdst;
return -(int) before_gmtoff;
}
if (beforetime > boundary && aftertime >= boundary)
{
tm->tm_isdst = after_isdst;
return -(int) after_gmtoff;
}
/*
* It's an invalid or ambiguous time due to timezone transition. Prefer
* the standard-time interpretation.
*/
if (after_isdst == 0)
{
tm->tm_isdst = after_isdst;
return -(int) after_gmtoff;
}
tm->tm_isdst = before_isdst;
return -(int) before_gmtoff;
overflow:
/* Given date is out of range, so assume UTC */
tm->tm_isdst = 0;
return 0;
}
| void EncodeDateOnly | ( | struct pg_tm * | tm, | |
| int | style, | |||
| char * | str | |||
| ) |
Definition at line 3641 of file datetime.c.
References Assert, DateOrder, DATEORDER_DMY, MONTHS_PER_YEAR, pg_tm::tm_mday, pg_tm::tm_mon, pg_tm::tm_year, USE_GERMAN_DATES, USE_ISO_DATES, USE_POSTGRES_DATES, USE_SQL_DATES, and USE_XSD_DATES.
Referenced by date_out(), map_sql_value_to_xml_value(), and PGTYPESdate_to_asc().
{
Assert(tm->tm_mon >= 1 && tm->tm_mon <= MONTHS_PER_YEAR);
switch (style)
{
case USE_ISO_DATES:
case USE_XSD_DATES:
/* compatible with ISO date formats */
if (tm->tm_year > 0)
sprintf(str, "%04d-%02d-%02d",
tm->tm_year, tm->tm_mon, tm->tm_mday);
else
sprintf(str, "%04d-%02d-%02d %s",
-(tm->tm_year - 1), tm->tm_mon, tm->tm_mday, "BC");
break;
case USE_SQL_DATES:
/* compatible with Oracle/Ingres date formats */
if (DateOrder == DATEORDER_DMY)
sprintf(str, "%02d/%02d", tm->tm_mday, tm->tm_mon);
else
sprintf(str, "%02d/%02d", tm->tm_mon, tm->tm_mday);
if (tm->tm_year > 0)
sprintf(str + 5, "/%04d", tm->tm_year);
else
sprintf(str + 5, "/%04d %s", -(tm->tm_year - 1), "BC");
break;
case USE_GERMAN_DATES:
/* German-style date format */
sprintf(str, "%02d.%02d", tm->tm_mday, tm->tm_mon);
if (tm->tm_year > 0)
sprintf(str + 5, ".%04d", tm->tm_year);
else
sprintf(str + 5, ".%04d %s", -(tm->tm_year - 1), "BC");
break;
case USE_POSTGRES_DATES:
default:
/* traditional date-only style for Postgres */
if (DateOrder == DATEORDER_DMY)
sprintf(str, "%02d-%02d", tm->tm_mday, tm->tm_mon);
else
sprintf(str, "%02d-%02d", tm->tm_mon, tm->tm_mday);
if (tm->tm_year > 0)
sprintf(str + 5, "-%04d", tm->tm_year);
else
sprintf(str + 5, "-%04d %s", -(tm->tm_year - 1), "BC");
break;
}
}
| void EncodeDateTime | ( | struct pg_tm * | tm, | |
| fsec_t | fsec, | |||
| bool | print_tz, | |||
| int | tz, | |||
| const char * | tzn, | |||
| int | style, | |||
| char * | str | |||
| ) |
Definition at line 3733 of file datetime.c.
References AppendTimestampSeconds(), Assert, date2j(), DateOrder, DATEORDER_DMY, days, EncodeTimezone(), j2day(), MAXTZLEN, months, MONTHS_PER_YEAR, pg_tm::tm_hour, pg_tm::tm_isdst, pg_tm::tm_mday, pg_tm::tm_min, pg_tm::tm_mon, pg_tm::tm_wday, pg_tm::tm_year, USE_GERMAN_DATES, USE_ISO_DATES, USE_POSTGRES_DATES, USE_SQL_DATES, and USE_XSD_DATES.
Referenced by abstimeout(), map_sql_value_to_xml_value(), PGTYPEStimestamp_to_asc(), timestamp_out(), timestamptz_out(), and timestamptz_to_str().
{
int day;
Assert(tm->tm_mon >= 1 && tm->tm_mon <= MONTHS_PER_YEAR);
/*
* Negative tm_isdst means we have no valid time zone translation.
*/
if (tm->tm_isdst < 0)
print_tz = false;
switch (style)
{
case USE_ISO_DATES:
case USE_XSD_DATES:
/* Compatible with ISO-8601 date formats */
if (style == USE_ISO_DATES)
sprintf(str, "%04d-%02d-%02d %02d:%02d:",
(tm->tm_year > 0) ? tm->tm_year : -(tm->tm_year - 1),
tm->tm_mon, tm->tm_mday, tm->tm_hour, tm->tm_min);
else
sprintf(str, "%04d-%02d-%02dT%02d:%02d:",
(tm->tm_year > 0) ? tm->tm_year : -(tm->tm_year - 1),
tm->tm_mon, tm->tm_mday, tm->tm_hour, tm->tm_min);
AppendTimestampSeconds(str + strlen(str), tm, fsec);
if (print_tz)
EncodeTimezone(str, tz, style);
if (tm->tm_year <= 0)
sprintf(str + strlen(str), " BC");
break;
case USE_SQL_DATES:
/* Compatible with Oracle/Ingres date formats */
if (DateOrder == DATEORDER_DMY)
sprintf(str, "%02d/%02d", tm->tm_mday, tm->tm_mon);
else
sprintf(str, "%02d/%02d", tm->tm_mon, tm->tm_mday);
sprintf(str + 5, "/%04d %02d:%02d:",
(tm->tm_year > 0) ? tm->tm_year : -(tm->tm_year - 1),
tm->tm_hour, tm->tm_min);
AppendTimestampSeconds(str + strlen(str), tm, fsec);
/*
* Note: the uses of %.*s in this function would be risky if the
* timezone names ever contain non-ASCII characters. However, all
* TZ abbreviations in the Olson database are plain ASCII.
*/
if (print_tz)
{
if (tzn)
sprintf(str + strlen(str), " %.*s", MAXTZLEN, tzn);
else
EncodeTimezone(str, tz, style);
}
if (tm->tm_year <= 0)
sprintf(str + strlen(str), " BC");
break;
case USE_GERMAN_DATES:
/* German variant on European style */
sprintf(str, "%02d.%02d", tm->tm_mday, tm->tm_mon);
sprintf(str + 5, ".%04d %02d:%02d:",
(tm->tm_year > 0) ? tm->tm_year : -(tm->tm_year - 1),
tm->tm_hour, tm->tm_min);
AppendTimestampSeconds(str + strlen(str), tm, fsec);
if (print_tz)
{
if (tzn)
sprintf(str + strlen(str), " %.*s", MAXTZLEN, tzn);
else
EncodeTimezone(str, tz, style);
}
if (tm->tm_year <= 0)
sprintf(str + strlen(str), " BC");
break;
case USE_POSTGRES_DATES:
default:
/* Backward-compatible with traditional Postgres abstime dates */
day = date2j(tm->tm_year, tm->tm_mon, tm->tm_mday);
tm->tm_wday = j2day(day);
strncpy(str, days[tm->tm_wday], 3);
strcpy(str + 3, " ");
if (DateOrder == DATEORDER_DMY)
sprintf(str + 4, "%02d %3s", tm->tm_mday, months[tm->tm_mon - 1]);
else
sprintf(str + 4, "%3s %02d", months[tm->tm_mon - 1], tm->tm_mday);
sprintf(str + 10, " %02d:%02d:", tm->tm_hour, tm->tm_min);
AppendTimestampSeconds(str + strlen(str), tm, fsec);
sprintf(str + strlen(str), " %04d",
(tm->tm_year > 0) ? tm->tm_year : -(tm->tm_year - 1));
if (print_tz)
{
if (tzn)
sprintf(str + strlen(str), " %.*s", MAXTZLEN, tzn);
else
{
/*
* We have a time zone, but no string version. Use the
* numeric form, but be sure to include a leading space to
* avoid formatting something which would be rejected by
* the date/time parser later. - thomas 2001-10-19
*/
sprintf(str + strlen(str), " ");
EncodeTimezone(str, tz, style);
}
}
if (tm->tm_year <= 0)
sprintf(str + strlen(str), " BC");
break;
}
}
Definition at line 3948 of file datetime.c.
References AddISO8601IntPart(), AddPostgresIntPart(), AddVerboseIntPart(), AppendSeconds(), INTSTYLE_ISO_8601, INTSTYLE_POSTGRES, INTSTYLE_POSTGRES_VERBOSE, INTSTYLE_SQL_STANDARD, MAX_INTERVAL_PRECISION, pg_tm::tm_hour, pg_tm::tm_mday, pg_tm::tm_min, pg_tm::tm_mon, pg_tm::tm_sec, and pg_tm::tm_year.
Referenced by interval_out(), PGTYPESinterval_to_asc(), and reltimeout().
{
char *cp = str;
int year = tm->tm_year;
int mon = tm->tm_mon;
int mday = tm->tm_mday;
int hour = tm->tm_hour;
int min = tm->tm_min;
int sec = tm->tm_sec;
bool is_before = FALSE;
bool is_zero = TRUE;
/*
* The sign of year and month are guaranteed to match, since they are
* stored internally as "month". But we'll need to check for is_before and
* is_zero when determining the signs of day and hour/minute/seconds
* fields.
*/
switch (style)
{
/* SQL Standard interval format */
case INTSTYLE_SQL_STANDARD:
{
bool has_negative = year < 0 || mon < 0 ||
mday < 0 || hour < 0 ||
min < 0 || sec < 0 || fsec < 0;
bool has_positive = year > 0 || mon > 0 ||
mday > 0 || hour > 0 ||
min > 0 || sec > 0 || fsec > 0;
bool has_year_month = year != 0 || mon != 0;
bool has_day_time = mday != 0 || hour != 0 ||
min != 0 || sec != 0 || fsec != 0;
bool has_day = mday != 0;
bool sql_standard_value = !(has_negative && has_positive) &&
!(has_year_month && has_day_time);
/*
* SQL Standard wants only 1 "<sign>" preceding the whole
* interval ... but can't do that if mixed signs.
*/
if (has_negative && sql_standard_value)
{
*cp++ = '-';
year = -year;
mon = -mon;
mday = -mday;
hour = -hour;
min = -min;
sec = -sec;
fsec = -fsec;
}
if (!has_negative && !has_positive)
{
sprintf(cp, "0");
}
else if (!sql_standard_value)
{
/*
* For non sql-standard interval values, force outputting
* the signs to avoid ambiguities with intervals with
* mixed sign components.
*/
char year_sign = (year < 0 || mon < 0) ? '-' : '+';
char day_sign = (mday < 0) ? '-' : '+';
char sec_sign = (hour < 0 || min < 0 ||
sec < 0 || fsec < 0) ? '-' : '+';
sprintf(cp, "%c%d-%d %c%d %c%d:%02d:",
year_sign, abs(year), abs(mon),
day_sign, abs(mday),
sec_sign, abs(hour), abs(min));
cp += strlen(cp);
AppendSeconds(cp, sec, fsec, MAX_INTERVAL_PRECISION, true);
}
else if (has_year_month)
{
sprintf(cp, "%d-%d", year, mon);
}
else if (has_day)
{
sprintf(cp, "%d %d:%02d:", mday, hour, min);
cp += strlen(cp);
AppendSeconds(cp, sec, fsec, MAX_INTERVAL_PRECISION, true);
}
else
{
sprintf(cp, "%d:%02d:", hour, min);
cp += strlen(cp);
AppendSeconds(cp, sec, fsec, MAX_INTERVAL_PRECISION, true);
}
}
break;
/* ISO 8601 "time-intervals by duration only" */
case INTSTYLE_ISO_8601:
/* special-case zero to avoid printing nothing */
if (year == 0 && mon == 0 && mday == 0 &&
hour == 0 && min == 0 && sec == 0 && fsec == 0)
{
sprintf(cp, "PT0S");
break;
}
*cp++ = 'P';
cp = AddISO8601IntPart(cp, year, 'Y');
cp = AddISO8601IntPart(cp, mon, 'M');
cp = AddISO8601IntPart(cp, mday, 'D');
if (hour != 0 || min != 0 || sec != 0 || fsec != 0)
*cp++ = 'T';
cp = AddISO8601IntPart(cp, hour, 'H');
cp = AddISO8601IntPart(cp, min, 'M');
if (sec != 0 || fsec != 0)
{
if (sec < 0 || fsec < 0)
*cp++ = '-';
AppendSeconds(cp, sec, fsec, MAX_INTERVAL_PRECISION, false);
cp += strlen(cp);
*cp++ = 'S';
*cp++ = '\0';
}
break;
/* Compatible with postgresql < 8.4 when DateStyle = 'iso' */
case INTSTYLE_POSTGRES:
cp = AddPostgresIntPart(cp, year, "year", &is_zero, &is_before);
/*
* Ideally we should spell out "month" like we do for "year" and
* "day". However, for backward compatibility, we can't easily
* fix this. bjm 2011-05-24
*/
cp = AddPostgresIntPart(cp, mon, "mon", &is_zero, &is_before);
cp = AddPostgresIntPart(cp, mday, "day", &is_zero, &is_before);
if (is_zero || hour != 0 || min != 0 || sec != 0 || fsec != 0)
{
bool minus = (hour < 0 || min < 0 || sec < 0 || fsec < 0);
sprintf(cp, "%s%s%02d:%02d:",
is_zero ? "" : " ",
(minus ? "-" : (is_before ? "+" : "")),
abs(hour), abs(min));
cp += strlen(cp);
AppendSeconds(cp, sec, fsec, MAX_INTERVAL_PRECISION, true);
}
break;
/* Compatible with postgresql < 8.4 when DateStyle != 'iso' */
case INTSTYLE_POSTGRES_VERBOSE:
default:
strcpy(cp, "@");
cp++;
cp = AddVerboseIntPart(cp, year, "year", &is_zero, &is_before);
cp = AddVerboseIntPart(cp, mon, "mon", &is_zero, &is_before);
cp = AddVerboseIntPart(cp, mday, "day", &is_zero, &is_before);
cp = AddVerboseIntPart(cp, hour, "hour", &is_zero, &is_before);
cp = AddVerboseIntPart(cp, min, "min", &is_zero, &is_before);
if (sec != 0 || fsec != 0)
{
*cp++ = ' ';
if (sec < 0 || (sec == 0 && fsec < 0))
{
if (is_zero)
is_before = TRUE;
else if (!is_before)
*cp++ = '-';
}
else if (is_before)
*cp++ = '-';
AppendSeconds(cp, sec, fsec, MAX_INTERVAL_PRECISION, false);
cp += strlen(cp);
sprintf(cp, " sec%s",
(abs(sec) != 1 || fsec != 0) ? "s" : "");
is_zero = FALSE;
}
/* identically zero? then put in a unitless zero... */
if (is_zero)
strcat(cp, " 0");
if (is_before)
strcat(cp, " ago");
break;
}
}
| void EncodeTimeOnly | ( | struct pg_tm * | tm, | |
| fsec_t | fsec, | |||
| bool | print_tz, | |||
| int | tz, | |||
| int | style, | |||
| char * | str | |||
| ) |
Definition at line 3704 of file datetime.c.
References AppendSeconds(), EncodeTimezone(), MAX_TIME_PRECISION, pg_tm::tm_hour, pg_tm::tm_min, and pg_tm::tm_sec.
Referenced by time_out(), and timetz_out().
{
sprintf(str, "%02d:%02d:", tm->tm_hour, tm->tm_min);
str += strlen(str);
AppendSeconds(str, tm->tm_sec, fsec, MAX_TIME_PRECISION, true);
if (print_tz)
EncodeTimezone(str, tz, style);
}
| static void EncodeTimezone | ( | char * | str, | |
| int | tz, | |||
| int | style | |||
| ) | [static] |
Definition at line 3613 of file datetime.c.
References USE_XSD_DATES.
Referenced by EncodeDateTime(), and EncodeTimeOnly().
{
int hour,
min,
sec;
sec = abs(tz);
min = sec / SECS_PER_MINUTE;
sec -= min * SECS_PER_MINUTE;
hour = min / MINS_PER_HOUR;
min -= hour * MINS_PER_HOUR;
str += strlen(str);
/* TZ is negated compared to sign we wish to display ... */
*str++ = (tz <= 0 ? '+' : '-');
if (sec != 0)
sprintf(str, "%02d:%02d:%02d", hour, min, sec);
else if (min != 0 || style == USE_XSD_DATES)
sprintf(str, "%02d:%02d", hour, min);
else
sprintf(str, "%02d", hour);
}
| void GetCurrentDateTime | ( | struct pg_tm * | tm | ) |
Definition at line 380 of file datetime.c.
References GetCurrentTransactionStartTimestamp(), NULL, and timestamp2tm().
Referenced by date_in(), DecodeDateTime(), DecodeTimeOnly(), PGTYPESdate_today(), PGTYPEStimestamp_current(), and time_timetz().
{
int tz;
fsec_t fsec;
timestamp2tm(GetCurrentTransactionStartTimestamp(), &tz, tm, &fsec,
NULL, NULL);
/* Note: don't pass NULL tzp to timestamp2tm; affects behavior */
}
Definition at line 397 of file datetime.c.
References GetCurrentTransactionStartTimestamp(), NULL, and timestamp2tm().
Referenced by DecodeDateTime(), and DecodeTimeOnly().
{
int tz;
timestamp2tm(GetCurrentTransactionStartTimestamp(), &tz, tm, fsec,
NULL, NULL);
/* Note: don't pass NULL tzp to timestamp2tm; affects behavior */
if (tzp != NULL)
*tzp = tz;
}
| void InstallTimeZoneAbbrevs | ( | TimeZoneAbbrevTable * | tbl | ) |
Definition at line 4236 of file datetime.c.
References TimeZoneAbbrevTable::abbrevs, i, NULL, TimeZoneAbbrevTable::numabbrevs, and sztimezonetktbl.
Referenced by assign_timezone_abbreviations().
{
int i;
timezonetktbl = tbl->abbrevs;
sztimezonetktbl = tbl->numabbrevs;
/* clear date cache in case it contains any stale timezone names */
for (i = 0; i < MAXDATEFIELDS; i++)
datecache[i] = NULL;
}
| static int ISO8601IntegerWidth | ( | char * | fieldstart | ) | [static] |
Definition at line 3269 of file datetime.c.
Referenced by DecodeISO8601Interval().
{
/* We might have had a leading '-' */
if (*fieldstart == '-')
fieldstart++;
return strspn(fieldstart, "0123456789");
}
| void j2date | ( | int | jd, | |
| int * | year, | |||
| int * | month, | |||
| int * | day | |||
| ) |
Definition at line 326 of file datetime.c.
Referenced by date2timestamptz(), date_out(), DecodeDateTime(), DecodeNumber(), DecodeTimeOnly(), do_to_timestamp(), isoweek2date(), isoweekdate2date(), map_sql_value_to_xml_value(), PGTYPESdate_fmt_asc(), PGTYPESdate_julmdy(), PGTYPESdate_to_asc(), timestamp2tm(), timestamp_pl_interval(), timestamptz_pl_interval(), and ValidateDate().
{
unsigned int julian;
unsigned int quad;
unsigned int extra;
int y;
julian = jd;
julian += 32044;
quad = julian / 146097;
extra = (julian - quad * 146097) * 4 + 3;
julian += 60 + quad * 3 + extra / 146097;
quad = julian / 1461;
julian -= quad * 1461;
y = julian * 4 / 1461;
julian = ((y != 0) ? ((julian + 305) % 365) : ((julian + 306) % 366))
+ 123;
y += quad * 4;
*year = y - 4800;
quad = julian * 2141 / 65536;
*day = julian - 7834 * quad / 256;
*month = (quad + 10) % MONTHS_PER_YEAR + 1;
return;
} /* j2date() */
| int j2day | ( | int | date | ) |
Definition at line 361 of file datetime.c.
Referenced by date2isoweek(), date2isoyear(), EncodeDateTime(), isoweek2j(), timestamp_part(), and timestamptz_part().
{
unsigned int day;
day = date;
day += 1;
day %= 7;
return (int) day;
} /* j2day() */
| int ParseDateTime | ( | const char * | timestr, | |
| char * | workbuf, | |||
| size_t | buflen, | |||
| char ** | field, | |||
| int * | ftype, | |||
| int | maxfields, | |||
| int * | numfields | |||
| ) |
Definition at line 567 of file datetime.c.
References APPEND_CHAR, datebsearch(), DTK_DATE, DTK_NUMBER, NULL, pg_tolower(), and szdatetktbl.
Referenced by abstimein(), date_in(), interval_in(), pg_logdir_ls(), PGTYPESdate_from_asc(), PGTYPESinterval_from_asc(), PGTYPEStimestamp_from_asc(), reltimein(), time_in(), timestamp_in(), timestamptz_in(), and timetz_in().
{
int nf = 0;
const char *cp = timestr;
char *bufp = workbuf;
const char *bufend = workbuf + buflen;
/*
* Set the character pointed-to by "bufptr" to "newchar", and increment
* "bufptr". "end" gives the end of the buffer -- we return an error if
* there is no space left to append a character to the buffer. Note that
* "bufptr" is evaluated twice.
*/
#define APPEND_CHAR(bufptr, end, newchar) \
do \
{ \
if (((bufptr) + 1) >= (end)) \
return DTERR_BAD_FORMAT; \
*(bufptr)++ = newchar; \
} while (0)
/* outer loop through fields */
while (*cp != '\0')
{
/* Ignore spaces between fields */
if (isspace((unsigned char) *cp))
{
cp++;
continue;
}
/* Record start of current field */
if (nf >= maxfields)
return DTERR_BAD_FORMAT;
field[nf] = bufp;
/* leading digit? then date or time */
if (isdigit((unsigned char) *cp))
{
APPEND_CHAR(bufp, bufend, *cp++);
while (isdigit((unsigned char) *cp))
APPEND_CHAR(bufp, bufend, *cp++);
/* time field? */
if (*cp == ':')
{
ftype[nf] = DTK_TIME;
APPEND_CHAR(bufp, bufend, *cp++);
while (isdigit((unsigned char) *cp) ||
(*cp == ':') || (*cp == '.'))
APPEND_CHAR(bufp, bufend, *cp++);
}
/* date field? allow embedded text month */
else if (*cp == '-' || *cp == '/' || *cp == '.')
{
/* save delimiting character to use later */
char delim = *cp;
APPEND_CHAR(bufp, bufend, *cp++);
/* second field is all digits? then no embedded text month */
if (isdigit((unsigned char) *cp))
{
ftype[nf] = ((delim == '.') ? DTK_NUMBER : DTK_DATE);
while (isdigit((unsigned char) *cp))
APPEND_CHAR(bufp, bufend, *cp++);
/*
* insist that the delimiters match to get a three-field
* date.
*/
if (*cp == delim)
{
ftype[nf] = DTK_DATE;
APPEND_CHAR(bufp, bufend, *cp++);
while (isdigit((unsigned char) *cp) || *cp == delim)
APPEND_CHAR(bufp, bufend, *cp++);
}
}
else
{
ftype[nf] = DTK_DATE;
while (isalnum((unsigned char) *cp) || *cp == delim)
APPEND_CHAR(bufp, bufend, pg_tolower((unsigned char) *cp++));
}
}
/*
* otherwise, number only and will determine year, month, day, or
* concatenated fields later...
*/
else
ftype[nf] = DTK_NUMBER;
}
/* Leading decimal point? Then fractional seconds... */
else if (*cp == '.')
{
APPEND_CHAR(bufp, bufend, *cp++);
while (isdigit((unsigned char) *cp))
APPEND_CHAR(bufp, bufend, *cp++);
ftype[nf] = DTK_NUMBER;
}
/*
* text? then date string, month, day of week, special, or timezone
*/
else if (isalpha((unsigned char) *cp))
{
bool is_date;
ftype[nf] = DTK_STRING;
APPEND_CHAR(bufp, bufend, pg_tolower((unsigned char) *cp++));
while (isalpha((unsigned char) *cp))
APPEND_CHAR(bufp, bufend, pg_tolower((unsigned char) *cp++));
/*
* Dates can have embedded '-', '/', or '.' separators. It could
* also be a timezone name containing embedded '/', '+', '-', '_',
* or ':' (but '_' or ':' can't be the first punctuation). If the
* next character is a digit or '+', we need to check whether what
* we have so far is a recognized non-timezone keyword --- if so,
* don't believe that this is the start of a timezone.
*/
is_date = false;
if (*cp == '-' || *cp == '/' || *cp == '.')
is_date = true;
else if (*cp == '+' || isdigit((unsigned char) *cp))
{
*bufp = '\0'; /* null-terminate current field value */
/* we need search only the core token table, not TZ names */
if (datebsearch(field[nf], datetktbl, szdatetktbl) == NULL)
is_date = true;
}
if (is_date)
{
ftype[nf] = DTK_DATE;
do
{
APPEND_CHAR(bufp, bufend, pg_tolower((unsigned char) *cp++));
} while (*cp == '+' || *cp == '-' ||
*cp == '/' || *cp == '_' ||
*cp == '.' || *cp == ':' ||
isalnum((unsigned char) *cp));
}
}
/* sign? then special or numeric timezone */
else if (*cp == '+' || *cp == '-')
{
APPEND_CHAR(bufp, bufend, *cp++);
/* soak up leading whitespace */
while (isspace((unsigned char) *cp))
cp++;
/* numeric timezone? */
/* note that "DTK_TZ" could also be a signed float or yyyy-mm */
if (isdigit((unsigned char) *cp))
{
ftype[nf] = DTK_TZ;
APPEND_CHAR(bufp, bufend, *cp++);
while (isdigit((unsigned char) *cp) ||
*cp == ':' || *cp == '.' || *cp == '-')
APPEND_CHAR(bufp, bufend, *cp++);
}
/* special? */
else if (isalpha((unsigned char) *cp))
{
ftype[nf] = DTK_SPECIAL;
APPEND_CHAR(bufp, bufend, pg_tolower((unsigned char) *cp++));
while (isalpha((unsigned char) *cp))
APPEND_CHAR(bufp, bufend, pg_tolower((unsigned char) *cp++));
}
/* otherwise something wrong... */
else
return DTERR_BAD_FORMAT;
}
/* ignore other punctuation but use as delimiter */
else if (ispunct((unsigned char) *cp))
{
cp++;
continue;
}
/* otherwise, something is not right... */
else
return DTERR_BAD_FORMAT;
/* force in a delimiter after each field */
*bufp++ = '\0';
nf++;
}
*numfields = nf;
return 0;
}
| static int ParseFractionalSecond | ( | char * | cp, | |
| fsec_t * | fsec | |||
| ) | [static] |
Definition at line 515 of file datetime.c.
References Assert, and rint().
Referenced by DecodeDateTime(), DecodeNumber(), DecodeTime(), and DecodeTimeOnly().
{
double frac;
/* Caller should always pass the start of the fraction part */
Assert(*cp == '.');
errno = 0;
frac = strtod(cp, &cp);
/* check for parse failure */
if (*cp != '\0' || errno != 0)
return DTERR_BAD_FORMAT;
#ifdef HAVE_INT64_TIMESTAMP
*fsec = rint(frac * 1000000);
#else
*fsec = frac;
#endif
return 0;
}
| static int ParseISO8601Number | ( | char * | str, | |
| char ** | endptr, | |||
| int * | ipart, | |||
| double * | fpart | |||
| ) | [static] |
Definition at line 3241 of file datetime.c.
References val.
Referenced by DecodeISO8601Interval().
{
double val;
if (!(isdigit((unsigned char) *str) || *str == '-' || *str == '.'))
return DTERR_BAD_FORMAT;
errno = 0;
val = strtod(str, endptr);
/* did we not see anything that looks like a double? */
if (*endptr == str || errno != 0)
return DTERR_BAD_FORMAT;
/* watch out for overflow */
if (val < INT_MIN || val > INT_MAX)
return DTERR_FIELD_OVERFLOW;
/* be very sure we truncate towards zero (cf dtrunc()) */
if (val >= 0)
*ipart = (int) floor(val);
else
*ipart = (int) -floor(-val);
*fpart = val - *ipart;
return 0;
}
| Datum pg_timezone_abbrevs | ( | PG_FUNCTION_ARGS | ) |
Definition at line 4253 of file datetime.c.
References Assert, BlessTupleDesc(), BoolGetDatum, BOOLOID, CreateTemplateTupleDesc(), CStringGetTextDatum, DTZ, FROMVAL, heap_form_tuple(), HeapTupleGetDatum, INTERVALOID, IntervalPGetDatum, MemoryContextSwitchTo(), MemSet, FuncCallContext::multi_call_memory_ctx, palloc(), pg_toupper(), SRF_FIRSTCALL_INIT, SRF_IS_FIRSTCALL, SRF_PERCALL_SETUP, SRF_RETURN_DONE, SRF_RETURN_NEXT, sztimezonetktbl, TEXTOID, tm2interval(), pg_tm::tm_min, TOKMAXLEN, FuncCallContext::tuple_desc, TupleDescInitEntry(), TZ, FuncCallContext::user_fctx, and values.
{
FuncCallContext *funcctx;
int *pindex;
Datum result;
HeapTuple tuple;
Datum values[3];
bool nulls[3];
char buffer[TOKMAXLEN + 1];
unsigned char *p;
struct pg_tm tm;
Interval *resInterval;
/* stuff done only on the first call of the function */
if (SRF_IS_FIRSTCALL())
{
TupleDesc tupdesc;
MemoryContext oldcontext;
/* create a function context for cross-call persistence */
funcctx = SRF_FIRSTCALL_INIT();
/*
* switch to memory context appropriate for multiple function calls
*/
oldcontext = MemoryContextSwitchTo(funcctx->multi_call_memory_ctx);
/* allocate memory for user context */
pindex = (int *) palloc(sizeof(int));
*pindex = 0;
funcctx->user_fctx = (void *) pindex;
/*
* build tupdesc for result tuples. This must match this function's
* pg_proc entry!
*/
tupdesc = CreateTemplateTupleDesc(3, false);
TupleDescInitEntry(tupdesc, (AttrNumber) 1, "abbrev",
TEXTOID, -1, 0);
TupleDescInitEntry(tupdesc, (AttrNumber) 2, "utc_offset",
INTERVALOID, -1, 0);
TupleDescInitEntry(tupdesc, (AttrNumber) 3, "is_dst",
BOOLOID, -1, 0);
funcctx->tuple_desc = BlessTupleDesc(tupdesc);
MemoryContextSwitchTo(oldcontext);
}
/* stuff done on every call of the function */
funcctx = SRF_PERCALL_SETUP();
pindex = (int *) funcctx->user_fctx;
if (*pindex >= sztimezonetktbl)
SRF_RETURN_DONE(funcctx);
MemSet(nulls, 0, sizeof(nulls));
/*
* Convert name to text, using upcasing conversion that is the inverse of
* what ParseDateTime() uses.
*/
strncpy(buffer, timezonetktbl[*pindex].token, TOKMAXLEN);
buffer[TOKMAXLEN] = '\0'; /* may not be null-terminated */
for (p = (unsigned char *) buffer; *p; p++)
*p = pg_toupper(*p);
values[0] = CStringGetTextDatum(buffer);
MemSet(&tm, 0, sizeof(struct pg_tm));
tm.tm_min = (-1) * FROMVAL(&timezonetktbl[*pindex]);
resInterval = (Interval *) palloc(sizeof(Interval));
tm2interval(&tm, 0, resInterval);
values[1] = IntervalPGetDatum(resInterval);
Assert(timezonetktbl[*pindex].type == DTZ ||
timezonetktbl[*pindex].type == TZ);
values[2] = BoolGetDatum(timezonetktbl[*pindex].type == DTZ);
(*pindex)++;
tuple = heap_form_tuple(funcctx->tuple_desc, values, nulls);
result = HeapTupleGetDatum(tuple);
SRF_RETURN_NEXT(funcctx, result);
}
| Datum pg_timezone_names | ( | PG_FUNCTION_ARGS | ) |
Definition at line 4344 of file datetime.c.
References BlessTupleDesc(), BoolGetDatum, BOOLOID, CreateTemplateTupleDesc(), CStringGetTextDatum, GetCurrentTransactionStartTimestamp(), heap_form_tuple(), HeapTupleGetDatum, INTERVALOID, IntervalPGetDatum, MemoryContextSwitchTo(), MemSet, FuncCallContext::multi_call_memory_ctx, palloc(), pg_get_timezone_name(), pg_tzenumerate_end(), pg_tzenumerate_next(), pg_tzenumerate_start(), SRF_FIRSTCALL_INIT, SRF_IS_FIRSTCALL, SRF_PERCALL_SETUP, SRF_RETURN_DONE, SRF_RETURN_NEXT, TEXTOID, timestamp2tm(), tm2interval(), pg_tm::tm_isdst, pg_tm::tm_sec, FuncCallContext::tuple_desc, TupleDescInitEntry(), FuncCallContext::user_fctx, and values.
{
MemoryContext oldcontext;
FuncCallContext *funcctx;
pg_tzenum *tzenum;
pg_tz *tz;
Datum result;
HeapTuple tuple;
Datum values[4];
bool nulls[4];
int tzoff;
struct pg_tm tm;
fsec_t fsec;
const char *tzn;
Interval *resInterval;
struct pg_tm itm;
/* stuff done only on the first call of the function */
if (SRF_IS_FIRSTCALL())
{
TupleDesc tupdesc;
/* create a function context for cross-call persistence */
funcctx = SRF_FIRSTCALL_INIT();
/*
* switch to memory context appropriate for multiple function calls
*/
oldcontext = MemoryContextSwitchTo(funcctx->multi_call_memory_ctx);
/* initialize timezone scanning code */
tzenum = pg_tzenumerate_start();
funcctx->user_fctx = (void *) tzenum;
/*
* build tupdesc for result tuples. This must match this function's
* pg_proc entry!
*/
tupdesc = CreateTemplateTupleDesc(4, false);
TupleDescInitEntry(tupdesc, (AttrNumber) 1, "name",
TEXTOID, -1, 0);
TupleDescInitEntry(tupdesc, (AttrNumber) 2, "abbrev",
TEXTOID, -1, 0);
TupleDescInitEntry(tupdesc, (AttrNumber) 3, "utc_offset",
INTERVALOID, -1, 0);
TupleDescInitEntry(tupdesc, (AttrNumber) 4, "is_dst",
BOOLOID, -1, 0);
funcctx->tuple_desc = BlessTupleDesc(tupdesc);
MemoryContextSwitchTo(oldcontext);
}
/* stuff done on every call of the function */
funcctx = SRF_PERCALL_SETUP();
tzenum = (pg_tzenum *) funcctx->user_fctx;
/* search for another zone to display */
for (;;)
{
oldcontext = MemoryContextSwitchTo(funcctx->multi_call_memory_ctx);
tz = pg_tzenumerate_next(tzenum);
MemoryContextSwitchTo(oldcontext);
if (!tz)
{
pg_tzenumerate_end(tzenum);
funcctx->user_fctx = NULL;
SRF_RETURN_DONE(funcctx);
}
/* Convert now() to local time in this zone */
if (timestamp2tm(GetCurrentTransactionStartTimestamp(),
&tzoff, &tm, &fsec, &tzn, tz) != 0)
continue; /* ignore if conversion fails */
/* Ignore zic's rather silly "Factory" time zone */
if (tzn && strcmp(tzn, "Local time zone must be set--see zic manual page") == 0)
continue;
/* Found a displayable zone */
break;
}
MemSet(nulls, 0, sizeof(nulls));
values[0] = CStringGetTextDatum(pg_get_timezone_name(tz));
values[1] = CStringGetTextDatum(tzn ? tzn : "");
MemSet(&itm, 0, sizeof(struct pg_tm));
itm.tm_sec = -tzoff;
resInterval = (Interval *) palloc(sizeof(Interval));
tm2interval(&itm, 0, resInterval);
values[2] = IntervalPGetDatum(resInterval);
values[3] = BoolGetDatum(tm.tm_isdst > 0);
tuple = heap_form_tuple(funcctx->tuple_desc, values, nulls);
result = HeapTupleGetDatum(tuple);
SRF_RETURN_NEXT(funcctx, result);
}
| static int strtoi | ( | const char * | nptr, | |
| char ** | endptr, | |||
| int | base | |||
| ) | [static] |
Definition at line 269 of file datetime.c.
References val.
Referenced by DecodeDateTime(), DecodeInterval(), DecodeNumber(), DecodeTime(), DecodeTimeOnly(), and DecodeTimezone().
Definition at line 4180 of file datetime.c.
References FuncExpr::args, Assert, DatumGetInt32, exprTypmod(), IsA, linitial, list_length(), lsecond, and relabel_to_typmod().
Referenced by time_transform(), and timestamp_transform().
{
FuncExpr *expr = (FuncExpr *) node;
Node *ret = NULL;
Node *typmod;
Assert(IsA(expr, FuncExpr));
Assert(list_length(expr->args) >= 2);
typmod = (Node *) lsecond(expr->args);
if (IsA(typmod, Const) &&!((Const *) typmod)->constisnull)
{
Node *source = (Node *) linitial(expr->args);
int32 old_precis = exprTypmod(source);
int32 new_precis = DatumGetInt32(((Const *) typmod)->constvalue);
if (new_precis < 0 || new_precis == max_precis ||
(old_precis >= 0 && new_precis >= old_precis))
ret = relabel_to_typmod(source, new_precis);
}
return ret;
}
| static void TrimTrailingZeros | ( | char * | str | ) | [static] |
Definition at line 417 of file datetime.c.
Referenced by AppendSeconds(), and EncodeDateTime().
{
int len = strlen(str);
while (len > 1 && *(str + len - 1) == '0' && *(str + len - 2) != '.')
{
len--;
*(str + len) = '\0';
}
}
| static int ValidateDate | ( | int | fmask, | |
| bool | isjulian, | |||
| bool | is2digits, | |||
| bool | bc, | |||
| struct pg_tm * | tm | |||
| ) | [static] |
Definition at line 2269 of file datetime.c.
References date2j(), DAY, day_tab, DOY, DTK_DATE_M, DTK_M, isleap, j2date(), MONTH, MONTHS_PER_YEAR, pg_tm::tm_mday, pg_tm::tm_mon, pg_tm::tm_yday, pg_tm::tm_year, and YEAR.
Referenced by DecodeDateTime(), and DecodeTimeOnly().
{
if (fmask & DTK_M(YEAR))
{
if (isjulian)
{
/* tm_year is correct and should not be touched */
}
else if (bc)
{
/* there is no year zero in AD/BC notation */
if (tm->tm_year <= 0)
return DTERR_FIELD_OVERFLOW;
/* internally, we represent 1 BC as year zero, 2 BC as -1, etc */
tm->tm_year = -(tm->tm_year - 1);
}
else if (is2digits)
{
/* process 1 or 2-digit input as 1970-2069 AD, allow '0' and '00' */
if (tm->tm_year < 0) /* just paranoia */
return DTERR_FIELD_OVERFLOW;
if (tm->tm_year < 70)
tm->tm_year += 2000;
else if (tm->tm_year < 100)
tm->tm_year += 1900;
}
else
{
/* there is no year zero in AD/BC notation */
if (tm->tm_year <= 0)
return DTERR_FIELD_OVERFLOW;
}
}
/* now that we have correct year, decode DOY */
if (fmask & DTK_M(DOY))
{
j2date(date2j(tm->tm_year, 1, 1) + tm->tm_yday - 1,
&tm->tm_year, &tm->tm_mon, &tm->tm_mday);
}
/* check for valid month */
if (fmask & DTK_M(MONTH))
{
if (tm->tm_mon < 1 || tm->tm_mon > MONTHS_PER_YEAR)
return DTERR_MD_FIELD_OVERFLOW;
}
/* minimal check for valid day */
if (fmask & DTK_M(DAY))
{
if (tm->tm_mday < 1 || tm->tm_mday > 31)
return DTERR_MD_FIELD_OVERFLOW;
}
if ((fmask & DTK_DATE_M) == DTK_DATE_M)
{
/*
* Check for valid day of month, now that we know for sure the month
* and year. Note we don't use MD_FIELD_OVERFLOW here, since it seems
* unlikely that "Feb 29" is a YMD-order error.
*/
if (tm->tm_mday > day_tab[isleap(tm->tm_year)][tm->tm_mon - 1])
return DTERR_FIELD_OVERFLOW;
}
return 0;
}
Definition at line 260 of file datetime.c.
Definition at line 111 of file datetime.c.
| const int day_tab[2][13] |
{
{31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31, 0},
{31, 29, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31, 0}
}
Definition at line 58 of file datetime.c.
Referenced by DecodeDateTime(), PGTYPEStimestamp_add_interval(), PGTYPEStimestamp_defmt_scan(), timestamp_age(), timestamp_pl_interval(), timestamptz_age(), timestamptz_pl_interval(), and ValidateDate().
| char* days[] |
{"Sunday", "Monday", "Tuesday", "Wednesday",
"Thursday", "Friday", "Saturday", NULL}
Definition at line 67 of file datetime.c.
Referenced by date_mii(), date_pli(), DCH_from_char(), DCH_to_char(), dttofmtasc_replace(), EncodeDateTime(), interval_time(), and PGTYPEStimestamp_defmt_scan().
const datetkn* deltacache[MAXDATEFIELDS] = {NULL} [static] |
Definition at line 262 of file datetime.c.
datetkn deltatktbl[] [static] |
Definition at line 191 of file datetime.c.
| char* months[] |
{"Jan", "Feb", "Mar", "Apr", "May", "Jun",
"Jul", "Aug", "Sep", "Oct", "Nov", "Dec", NULL}
Definition at line 64 of file datetime.c.
Referenced by DCH_from_char(), DCH_to_char(), dttofmtasc_replace(), EncodeDateTime(), PGTYPESdate_defmt_asc(), PGTYPESdate_fmt_asc(), and PGTYPEStimestamp_defmt_scan().
int szdatetktbl = sizeof datetktbl / sizeof datetktbl[0] [static] |
Definition at line 189 of file datetime.c.
Referenced by CheckDateTokenTables(), DecodeSpecial(), and ParseDateTime().
int szdeltatktbl = sizeof deltatktbl / sizeof deltatktbl[0] [static] |
Definition at line 258 of file datetime.c.
Referenced by CheckDateTokenTables(), and DecodeUnits().
int sztimezonetktbl = 0 [static] |
Definition at line 109 of file datetime.c.
Referenced by DecodeSpecial(), InstallTimeZoneAbbrevs(), and pg_timezone_abbrevs().
datetkn* timezonetktbl = NULL [static] |
Definition at line 107 of file datetime.c.
1.7.1