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feat:[TD-32642] add timezone logic

This commit is contained in:
wangmm0220 2024-11-25 23:43:37 +08:00
parent 69da972796
commit c7d0f69ca4
14 changed files with 4466 additions and 4045 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

8
cmake/cmake.define
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@ -6,14 +6,12 @@ set(TD_BUILD_KEEPER_INTERNAL FALSE)
# set output directory
SET(LIBRARY_OUTPUT_PATH ${PROJECT_BINARY_DIR}/build/lib)
SET(EXECUTABLE_OUTPUT_PATH ${PROJECT_BINARY_DIR}/build/bin)
SET(SHARE_OUTPUT_PATH ${PROJECT_BINARY_DIR}/build/share)
SET(TD_TESTS_OUTPUT_DIR ${PROJECT_BINARY_DIR}/test)
MESSAGE(STATUS "Project source directory: " ${PROJECT_SOURCE_DIR})
MESSAGE(STATUS "Project binary files output path: " ${PROJECT_BINARY_DIR})
MESSAGE(STATUS "Project executable files output path: " ${EXECUTABLE_OUTPUT_PATH})
MESSAGE(STATUS "Project library files output path: " ${LIBRARY_OUTPUT_PATH})
MESSAGE(STATUS "Project share files output path: " ${SHARE_OUTPUT_PATH})
IF(NOT DEFINED TD_GRANT)
SET(TD_GRANT FALSE)
@ -105,6 +103,12 @@ ELSE()
SET(TAOS_LIB taos)
ENDIF()
IF(NOT DEFINED TZ_OUTPUT_PATH)
SET(TZ_OUTPUT_PATH ${PROJECT_BINARY_DIR}/build/share/timezone)
ENDIF()
MESSAGE(STATUS "timezone output path: " ${TZ_OUTPUT_PATH})
# build TSZ by default
IF("${TSZ_ENABLED}" MATCHES "false")
set(VAR_TSZ "" CACHE INTERNAL "global variant empty")

7
contrib/CMakeLists.txt
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@ -635,10 +635,15 @@ if(${TD_LINUX} AND ${BUILD_WITH_S3})
endif()
execute_process(
COMMAND make TZDIR=${SHARE_OUTPUT_PATH}/timezone clean all posix_only
COMMAND make TZDIR=${TZ_OUTPUT_PATH}/ clean all posix_only
WORKING_DIRECTORY "${TD_CONTRIB_DIR}/tz"
)
set(TZ_SRC_DIR "${TD_SOURCE_DIR}/source/os/src/timezone")
file(MAKE_DIRECTORY ${TZ_SRC_DIR})
file(COPY ${TD_CONTRIB_DIR}/tz/private.h ${TD_CONTRIB_DIR}/tz/tzdir.h ${TD_CONTRIB_DIR}/tz/tzfile.h
${TD_CONTRIB_DIR}/tz/localtime.c ${TD_CONTRIB_DIR}/tz/strftime.c
DESTINATION ${TZ_SRC_DIR})
# ================================================================================================
# Build test
# ================================================================================================

1151
include/os/osTimezone.h
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File diff suppressed because it is too large Load Diff

32
source/client/test/clientTests.cpp
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@ -1764,10 +1764,11 @@ TEST(clientCase, func_timezone_Test) {
check_sql_result(pConn, "select TO_ISO8601(TIMETRUNCATE(1704142800000, 1d, 0))", "2024-01-01T02:00:00.000+0200"); // 2024-01-01 23:00:00+0200
check_sql_result(pConn, "select TO_ISO8601(TIMETRUNCATE(ts, 1w, 1)) from db1.ntb", "2023-12-28T00:00:00.000+0200"); // 2024-01-01 23:00:00+0200
// int64_t now = get_sql_result(pConn, "select now(),now() + 2d");
// int64_t locationNow = now + 2 * 3600;
// check_sql_result_partial(pConn, "select TO_ISO8601(today())", "T00:00:00.000+0200"); // 2024-01-01 23:00:00+0200
// check_sql_result_partial(pConn, "select TO_ISO8601(now())", "+0200"); // 2024-01-01 23:00:00+0200
// TODAY
check_sql_result_partial(pConn, "select TO_ISO8601(today())", "T00:00:00.000+0200");
// NOW
check_sql_result_partial(pConn, "select TO_ISO8601(now())", "+0200");
// WEEKDAY
check_sql_result_integer(pConn, "select WEEKDAY('2024-01-01')", 0);
@ -1831,6 +1832,29 @@ TEST(clientCase, func_timezone_Test) {
check_sql_result(pConn, "select TO_CHAR(cast(1704142800000 as timestamp), 'yyyy-mm-dd hh24:mi:ss tzh')", "2024-01-01 23:00:00 +02");
check_sql_result(pConn, "select TO_CHAR(cast(1704142800000 as timestamp), 'yyyy-mm-dd hh24:mi:ss')", "2024-01-01 23:00:00");
// TIMEDIFF
check_sql_result_integer(pConn, "select TIMEDIFF(c1, '2024-01-01T23:00:00.001+02') from db1.ntb", -21600001); // use timezone in server UTC-8
check_sql_result_integer(pConn, "select TIMEDIFF(c1, '2024-01-01T23:00:00.001') from db1.ntb", -1); // use timezone in server UTC-8
check_sql_result_integer(pConn, "select TIMEDIFF('2024-01-01T23:00:00.001', '2024-01-01T13:00:00.000-08')", 1);
// CAST
check_sql_result_integer(pConn, "select CAST(c1 as timestamp) from db1.ntb", 1704121200000);
check_sql_result_integer(pConn, "select CAST('2024-01-01T23:00:00.000+02' as timestamp)", 1704142800000);
check_sql_result_integer(pConn, "select CAST('2024-01-01T23:00:00.000' as timestamp)", 1704142800000);
taos_close(pConn);
// hash join
pConn = getConnWithOption("UTC+1");
execQuery(pConn, "drop database if exists db1");
execQuery(pConn, "create database db1");
execQuery(pConn, "create table db1.ntb (ts timestamp, c1 binary(32), c2 int)");
execQuery(pConn, "create table db1.ntb1 (ts timestamp, c1 binary(32), c2 int)");
execQuery(pConn, "insert into db1.ntb values(1703987400000, '2023-12-31 00:50:00', 1)"); // 2023-12-31 00:50:00-0100
execQuery(pConn, "insert into db1.ntb1 values(1704070200000, '2023-12-31 23:50:00', 11)"); // 2023-12-31 23:50:00-0100
checkRows(pConn, "select a.ts,b.ts from db1.ntb a join db1.ntb1 b on timetruncate(a.ts, 1d) = timetruncate(b.ts, 1d)", 1);
taos_close(pConn);
}

2
source/libs/executor/src/hashjoinoperator.c
View File

@ -114,7 +114,7 @@ int32_t hJoinLaunchPrimExpr(SSDataBlock* pBlock, SHJoinTableCtx* pTable, int32_t
SColumnInfoData* pPrimOut = taosArrayGet(pBlock->pDataBlock, pTable->primCtx.targetSlotId);
if (0 != pCtx->timezoneUnit) {
for (int32_t i = startIdx; i <= endIdx; ++i) {
((int64_t*)pPrimOut->pData)[i] = ((int64_t*)pPrimIn->pData)[i] - (((int64_t*)pPrimIn->pData)[i] - pCtx->timezoneUnit) % pCtx->truncateUnit;
((int64_t*)pPrimOut->pData)[i] = ((int64_t*)pPrimIn->pData)[i] - (((int64_t*)pPrimIn->pData)[i] + pCtx->timezoneUnit) % pCtx->truncateUnit;
}
} else {
for (int32_t i = startIdx; i <= endIdx; ++i) {

1
source/libs/parser/src/parAstCreater.c
View File

@ -1063,6 +1063,7 @@ SNode* createCastFunctionNode(SAstCreateContext* pCxt, SNode* pExpr, SDataType d
}
pCxt->errCode = nodesListMakeAppend(&func->pParameterList, pExpr);
CHECK_PARSER_STATUS(pCxt);
func->tz = pCxt->pQueryCxt->timezone;
return (SNode*)func;
_err:
nodesDestroyNode((SNode*)func);

3
source/os/CMakeLists.txt
View File

@ -1,5 +1,6 @@
aux_source_directory(src OS_SRC)
add_library(os STATIC ${OS_SRC})
aux_source_directory(src/timezone OS_TZ)
add_library(os STATIC ${OS_SRC} ${OS_TZ})
target_include_directories(
os
PUBLIC "${TD_SOURCE_DIR}/include/os"

2890
source/os/src/osTimezone.c
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File diff suppressed because it is too large Load Diff

2498
source/os/src/timezone/localtime.c Normal file
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File diff suppressed because it is too large Load Diff

1129
source/os/src/timezone/private.h Normal file
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File diff suppressed because it is too large Load Diff

662
source/os/src/timezone/strftime.c Normal file
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@ -0,0 +1,662 @@
/* Convert a broken-down timestamp to a string. */
/* Copyright 1989 The Regents of the University of California.
All rights reserved.
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions
are met:
1. Redistributions of source code must retain the above copyright
notice, this list of conditions and the following disclaimer.
2. Redistributions in binary form must reproduce the above copyright
notice, this list of conditions and the following disclaimer in the
documentation and/or other materials provided with the distribution.
3. Neither the name of the University nor the names of its contributors
may be used to endorse or promote products derived from this software
without specific prior written permission.
THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS "AS IS" AND
ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
SUCH DAMAGE. */
/*
** Based on the UCB version with the copyright notice appearing above.
**
** This is ANSIish only when "multibyte character == plain character".
*/
#include "private.h"
#include <fcntl.h>
#include <locale.h>
#include <stdio.h>
#if MKTIME_MIGHT_OVERFLOW
/* Do this after system includes as it redefines time_t, mktime, timeoff. */
# define USE_TIMEX_T true
# include "localtime.c"
#endif
#ifndef DEPRECATE_TWO_DIGIT_YEARS
# define DEPRECATE_TWO_DIGIT_YEARS false
#endif
struct lc_time_T {
const char * mon[MONSPERYEAR];
const char * month[MONSPERYEAR];
const char * wday[DAYSPERWEEK];
const char * weekday[DAYSPERWEEK];
const char * X_fmt;
const char * x_fmt;
const char * c_fmt;
const char * am;
const char * pm;
const char * date_fmt;
};
static const struct lc_time_T C_time_locale = {
{
"Jan", "Feb", "Mar", "Apr", "May", "Jun",
"Jul", "Aug", "Sep", "Oct", "Nov", "Dec"
}, {
"January", "February", "March", "April", "May", "June",
"July", "August", "September", "October", "November", "December"
}, {
"Sun", "Mon", "Tue", "Wed",
"Thu", "Fri", "Sat"
}, {
"Sunday", "Monday", "Tuesday", "Wednesday",
"Thursday", "Friday", "Saturday"
},
/* X_fmt */
"%H:%M:%S",
/*
** x_fmt
** C99 and later require this format.
** Using just numbers (as here) makes Quakers happier;
** it's also compatible with SVR4.
*/
"%m/%d/%y",
/*
** c_fmt
** C99 and later require this format.
** Previously this code used "%D %X", but we now conform to C99.
** Note that
** "%a %b %d %H:%M:%S %Y"
** is used by Solaris 2.3.
*/
"%a %b %e %T %Y",
/* am */
"AM",
/* pm */
"PM",
/* date_fmt */
"%a %b %e %H:%M:%S %Z %Y"
};
enum warn { IN_NONE, IN_SOME, IN_THIS, IN_ALL };
static char * _add(const char *, char *, const char *);
static char * _conv(int, const char *, char *, const char *);
static char * _fmt(const char *, const struct tm *, char *, const char *,
enum warn *);
static char * _yconv(int, int, bool, bool, char *, char const *);
#ifndef YEAR_2000_NAME
# define YEAR_2000_NAME "CHECK_STRFTIME_FORMATS_FOR_TWO_DIGIT_YEARS"
#endif /* !defined YEAR_2000_NAME */
#if HAVE_STRFTIME_L
size_t
strftime_l(char *restrict s, size_t maxsize, char const *restrict format,
struct tm const *restrict t,
ATTRIBUTE_MAYBE_UNUSED locale_t locale)
{
/* Just call strftime, as only the C locale is supported. */
return strftime(s, maxsize, format, t);
}
#endif
size_t
strftime(char *restrict s, size_t maxsize, char const *restrict format,
struct tm const *restrict t)
{
char * p;
int saved_errno = errno;
enum warn warn = IN_NONE;
tzset();
p = _fmt(format, t, s, s + maxsize, &warn);
if (DEPRECATE_TWO_DIGIT_YEARS
&& warn != IN_NONE && getenv(YEAR_2000_NAME)) {
fprintf(stderr, "\n");
fprintf(stderr, "strftime format \"%s\" ", format);
fprintf(stderr, "yields only two digits of years in ");
if (warn == IN_SOME)
fprintf(stderr, "some locales");
else if (warn == IN_THIS)
fprintf(stderr, "the current locale");
else fprintf(stderr, "all locales");
fprintf(stderr, "\n");
}
if (p == s + maxsize) {
errno = ERANGE;
return 0;
}
*p = '\0';
errno = saved_errno;
return p - s;
}
static char *
_fmt(const char *format, const struct tm *t, char *pt,
const char *ptlim, enum warn *warnp)
{
struct lc_time_T const *Locale = &C_time_locale;
for ( ; *format; ++format) {
if (*format == '%') {
label:
switch (*++format) {
default:
/* Output unknown conversion specifiers as-is,
to aid debugging. This includes '%' at
format end. This conforms to C23 section
7.29.3.5 paragraph 6, which says behavior
is undefined here. */
--format;
break;
case 'A':
pt = _add((t->tm_wday < 0 ||
t->tm_wday >= DAYSPERWEEK) ?
"?" : Locale->weekday[t->tm_wday],
pt, ptlim);
continue;
case 'a':
pt = _add((t->tm_wday < 0 ||
t->tm_wday >= DAYSPERWEEK) ?
"?" : Locale->wday[t->tm_wday],
pt, ptlim);
continue;
case 'B':
pt = _add((t->tm_mon < 0 ||
t->tm_mon >= MONSPERYEAR) ?
"?" : Locale->month[t->tm_mon],
pt, ptlim);
continue;
case 'b':
case 'h':
pt = _add((t->tm_mon < 0 ||
t->tm_mon >= MONSPERYEAR) ?
"?" : Locale->mon[t->tm_mon],
pt, ptlim);
continue;
case 'C':
/*
** %C used to do a...
** _fmt("%a %b %e %X %Y", t);
** ...whereas now POSIX 1003.2 calls for
** something completely different.
** (ado, 1993-05-24)
*/
pt = _yconv(t->tm_year, TM_YEAR_BASE,
true, false, pt, ptlim);
continue;
case 'c':
{
enum warn warn2 = IN_SOME;
pt = _fmt(Locale->c_fmt, t, pt, ptlim, &warn2);
if (warn2 == IN_ALL)
warn2 = IN_THIS;
if (warn2 > *warnp)
*warnp = warn2;
}
continue;
case 'D':
pt = _fmt("%m/%d/%y", t, pt, ptlim, warnp);
continue;
case 'd':
pt = _conv(t->tm_mday, "%02d", pt, ptlim);
continue;
case 'E':
case 'O':
/*
** Locale modifiers of C99 and later.
** The sequences
** %Ec %EC %Ex %EX %Ey %EY
** %Od %oe %OH %OI %Om %OM
** %OS %Ou %OU %OV %Ow %OW %Oy
** are supposed to provide alternative
** representations.
*/
goto label;
case 'e':
pt = _conv(t->tm_mday, "%2d", pt, ptlim);
continue;
case 'F':
pt = _fmt("%Y-%m-%d", t, pt, ptlim, warnp);
continue;
case 'H':
pt = _conv(t->tm_hour, "%02d", pt, ptlim);
continue;
case 'I':
pt = _conv((t->tm_hour % 12) ?
(t->tm_hour % 12) : 12,
"%02d", pt, ptlim);
continue;
case 'j':
pt = _conv(t->tm_yday + 1, "%03d", pt, ptlim);
continue;
case 'k':
/*
** This used to be...
** _conv(t->tm_hour % 12 ?
** t->tm_hour % 12 : 12, 2, ' ');
** ...and has been changed to the below to
** match SunOS 4.1.1 and Arnold Robbins'
** strftime version 3.0. That is, "%k" and
** "%l" have been swapped.
** (ado, 1993-05-24)
*/
pt = _conv(t->tm_hour, "%2d", pt, ptlim);
continue;
#ifdef KITCHEN_SINK
case 'K':
/*
** After all this time, still unclaimed!
*/
pt = _add("kitchen sink", pt, ptlim);
continue;
#endif /* defined KITCHEN_SINK */
case 'l':
/*
** This used to be...
** _conv(t->tm_hour, 2, ' ');
** ...and has been changed to the below to
** match SunOS 4.1.1 and Arnold Robbin's
** strftime version 3.0. That is, "%k" and
** "%l" have been swapped.
** (ado, 1993-05-24)
*/
pt = _conv((t->tm_hour % 12) ?
(t->tm_hour % 12) : 12,
"%2d", pt, ptlim);
continue;
case 'M':
pt = _conv(t->tm_min, "%02d", pt, ptlim);
continue;
case 'm':
pt = _conv(t->tm_mon + 1, "%02d", pt, ptlim);
continue;
case 'n':
pt = _add("\n", pt, ptlim);
continue;
case 'p':
pt = _add((t->tm_hour >= (HOURSPERDAY / 2)) ?
Locale->pm :
Locale->am,
pt, ptlim);
continue;
case 'R':
pt = _fmt("%H:%M", t, pt, ptlim, warnp);
continue;
case 'r':
pt = _fmt("%I:%M:%S %p", t, pt, ptlim, warnp);
continue;
case 'S':
pt = _conv(t->tm_sec, "%02d", pt, ptlim);
continue;
case 's':
{
struct tm tm;
char buf[INT_STRLEN_MAXIMUM(
time_t) + 1];
time_t mkt;
tm.tm_sec = t->tm_sec;
tm.tm_min = t->tm_min;
tm.tm_hour = t->tm_hour;
tm.tm_mday = t->tm_mday;
tm.tm_mon = t->tm_mon;
tm.tm_year = t->tm_year;
/* Get the time_t value for TM.
Native time_t, or its redefinition
by localtime.c above, is wide enough
so that this cannot overflow. */
#ifdef TM_GMTOFF
mkt = timeoff(&tm, t->TM_GMTOFF);
#else
tm.tm_isdst = t->tm_isdst;
mkt = mktime(&tm);
#endif
if (TYPE_SIGNED(time_t)) {
intmax_t n = mkt;
sprintf(buf, "%"PRIdMAX, n);
} else {
uintmax_t n = mkt;
sprintf(buf, "%"PRIuMAX, n);
}
pt = _add(buf, pt, ptlim);
}
continue;
case 'T':
pt = _fmt("%H:%M:%S", t, pt, ptlim, warnp);
continue;
case 't':
pt = _add("\t", pt, ptlim);
continue;
case 'U':
pt = _conv((t->tm_yday + DAYSPERWEEK -
t->tm_wday) / DAYSPERWEEK,
"%02d", pt, ptlim);
continue;
case 'u':
/*
** From Arnold Robbins' strftime version 3.0:
** "ISO 8601: Weekday as a decimal number
** [1 (Monday) - 7]"
** (ado, 1993-05-24)
*/
pt = _conv((t->tm_wday == 0) ?
DAYSPERWEEK : t->tm_wday,
"%d", pt, ptlim);
continue;
case 'V': /* ISO 8601 week number */
case 'G': /* ISO 8601 year (four digits) */
case 'g': /* ISO 8601 year (two digits) */
/*
** From Arnold Robbins' strftime version 3.0: "the week number of the
** year (the first Monday as the first day of week 1) as a decimal number
** (01-53)."
** (ado, 1993-05-24)
**
** From <https://www.cl.cam.ac.uk/~mgk25/iso-time.html> by Markus Kuhn:
** "Week 01 of a year is per definition the first week which has the
** Thursday in this year, which is equivalent to the week which contains
** the fourth day of January. In other words, the first week of a new year
** is the week which has the majority of its days in the new year. Week 01
** might also contain days from the previous year and the week before week
** 01 of a year is the last week (52 or 53) of the previous year even if
** it contains days from the new year. A week starts with Monday (day 1)
** and ends with Sunday (day 7). For example, the first week of the year
** 1997 lasts from 1996-12-30 to 1997-01-05..."
** (ado, 1996-01-02)
*/
{
int year;
int base;
int yday;
int wday;
int w;
year = t->tm_year;
base = TM_YEAR_BASE;
yday = t->tm_yday;
wday = t->tm_wday;
for ( ; ; ) {
int len;
int bot;
int top;
len = isleap_sum(year, base) ?
DAYSPERLYEAR :
DAYSPERNYEAR;
/*
** What yday (-3 ... 3) does
** the ISO year begin on?
*/
bot = ((yday + 11 - wday) %
DAYSPERWEEK) - 3;
/*
** What yday does the NEXT
** ISO year begin on?
*/
top = bot -
(len % DAYSPERWEEK);
if (top < -3)
top += DAYSPERWEEK;
top += len;
if (yday >= top) {
++base;
w = 1;
break;
}
if (yday >= bot) {
w = 1 + ((yday - bot) /
DAYSPERWEEK);
break;
}
--base;
yday += isleap_sum(year, base) ?
DAYSPERLYEAR :
DAYSPERNYEAR;
}
#ifdef XPG4_1994_04_09
if ((w == 52 &&
t->tm_mon == TM_JANUARY) ||
(w == 1 &&
t->tm_mon == TM_DECEMBER))
w = 53;
#endif /* defined XPG4_1994_04_09 */
if (*format == 'V')
pt = _conv(w, "%02d",
pt, ptlim);
else if (*format == 'g') {
*warnp = IN_ALL;
pt = _yconv(year, base,
false, true,
pt, ptlim);
} else pt = _yconv(year, base,
true, true,
pt, ptlim);
}
continue;
case 'v':
/*
** From Arnold Robbins' strftime version 3.0:
** "date as dd-bbb-YYYY"
** (ado, 1993-05-24)
*/
pt = _fmt("%e-%b-%Y", t, pt, ptlim, warnp);
continue;
case 'W':
pt = _conv((t->tm_yday + DAYSPERWEEK -
(t->tm_wday ?
(t->tm_wday - 1) :
(DAYSPERWEEK - 1))) / DAYSPERWEEK,
"%02d", pt, ptlim);
continue;
case 'w':
pt = _conv(t->tm_wday, "%d", pt, ptlim);
continue;
case 'X':
pt = _fmt(Locale->X_fmt, t, pt, ptlim, warnp);
continue;
case 'x':
{
enum warn warn2 = IN_SOME;
pt = _fmt(Locale->x_fmt, t, pt, ptlim, &warn2);
if (warn2 == IN_ALL)
warn2 = IN_THIS;
if (warn2 > *warnp)
*warnp = warn2;
}
continue;
case 'y':
*warnp = IN_ALL;
pt = _yconv(t->tm_year, TM_YEAR_BASE,
false, true,
pt, ptlim);
continue;
case 'Y':
pt = _yconv(t->tm_year, TM_YEAR_BASE,
true, true,
pt, ptlim);
continue;
case 'Z':
#ifdef TM_ZONE
pt = _add(t->TM_ZONE, pt, ptlim);
#elif HAVE_TZNAME
if (t->tm_isdst >= 0)
pt = _add(tzname[t->tm_isdst != 0],
pt, ptlim);
#endif
/*
** C99 and later say that %Z must be
** replaced by the empty string if the
** time zone abbreviation is not
** determinable.
*/
continue;
case 'z':
#if defined TM_GMTOFF || USG_COMPAT || ALTZONE
{
long diff;
char const * sign;
bool negative;
# ifdef TM_GMTOFF
diff = t->TM_GMTOFF;
# else
/*
** C99 and later say that the UT offset must
** be computed by looking only at
** tm_isdst. This requirement is
** incorrect, since it means the code
** must rely on magic (in this case
** altzone and timezone), and the
** magic might not have the correct
** offset. Doing things correctly is
** tricky and requires disobeying the standard;
** see GNU C strftime for details.
** For now, punt and conform to the
** standard, even though it's incorrect.
**
** C99 and later say that %z must be replaced by
** the empty string if the time zone is not
** determinable, so output nothing if the
** appropriate variables are not available.
*/
if (t->tm_isdst < 0)
continue;
if (t->tm_isdst == 0)
# if USG_COMPAT
diff = -timezone;
# else
continue;
# endif
else
# if ALTZONE
diff = -altzone;
# else
continue;
# endif
# endif
negative = diff < 0;
if (diff == 0) {
# ifdef TM_ZONE
negative = t->TM_ZONE[0] == '-';
# else
negative = t->tm_isdst < 0;
# if HAVE_TZNAME
if (tzname[t->tm_isdst != 0][0] == '-')
negative = true;
# endif
# endif
}
if (negative) {
sign = "-";
diff = -diff;
} else sign = "+";
pt = _add(sign, pt, ptlim);
diff /= SECSPERMIN;
diff = (diff / MINSPERHOUR) * 100 +
(diff % MINSPERHOUR);
pt = _conv(diff, "%04d", pt, ptlim);
}
#endif
continue;
case '+':
pt = _fmt(Locale->date_fmt, t, pt, ptlim,
warnp);
continue;
case '%':
break;
}
}
if (pt == ptlim)
break;
*pt++ = *format;
}
return pt;
}
static char *
_conv(int n, const char *format, char *pt, const char *ptlim)
{
char buf[INT_STRLEN_MAXIMUM(int) + 1];
sprintf(buf, format, n);
return _add(buf, pt, ptlim);
}
static char *
_add(const char *str, char *pt, const char *ptlim)
{
while (pt < ptlim && (*pt = *str++) != '\0')
++pt;
return pt;
}
/*
** POSIX and the C Standard are unclear or inconsistent about
** what %C and %y do if the year is negative or exceeds 9999.
** Use the convention that %C concatenated with %y yields the
** same output as %Y, and that %Y contains at least 4 bytes,
** with more only if necessary.
*/
static char *
_yconv(int a, int b, bool convert_top, bool convert_yy,
char *pt, const char *ptlim)
{
register int lead;
register int trail;
int DIVISOR = 100;
trail = a % DIVISOR + b % DIVISOR;
lead = a / DIVISOR + b / DIVISOR + trail / DIVISOR;
trail %= DIVISOR;
if (trail < 0 && lead > 0) {
trail += DIVISOR;
--lead;
} else if (lead < 0 && trail > 0) {
trail -= DIVISOR;
++lead;
}
if (convert_top) {
if (lead == 0 && trail < 0)
pt = _add("-0", pt, ptlim);
else pt = _conv(lead, "%02d", pt, ptlim);
}
if (convert_yy)
pt = _conv(((trail < 0) ? -trail : trail), "%02d", pt, ptlim);
return pt;
}

6
source/os/src/timezone/tzdir.h Normal file
View File

@ -0,0 +1,6 @@
#ifndef TZDEFAULT
# define TZDEFAULT "/etc/localtime" /* default zone */
#endif
#ifndef TZDIR
# define TZDIR "/Users/mingmingwanng/source_code/TDengine/debug/build/share/timezone/" /* TZif directory */
#endif

121
source/os/src/timezone/tzfile.h Normal file
View File

@ -0,0 +1,121 @@
/* Layout and location of TZif files. */
#ifndef TZFILE_H
#define TZFILE_H
/*
** This file is in the public domain, so clarified as of
** 1996-06-05 by Arthur David Olson.
*/
/*
** This header is for use ONLY with the time conversion code.
** There is no guarantee that it will remain unchanged,
** or that it will remain at all.
** Do NOT copy it to any system include directory.
** Thank you!
*/
/*
** Information about time zone files.
*/
#ifndef TZDEFRULES
# define TZDEFRULES "posixrules"
#endif /* !defined TZDEFRULES */
/* See Internet RFC 9636 for more details about the following format. */
/*
** Each file begins with. . .
*/
#define TZ_MAGIC "TZif"
struct tzhead {
char tzh_magic[4]; /* TZ_MAGIC */
char tzh_version[1]; /* '\0' or '2'-'4' as of 2021 */
char tzh_reserved[15]; /* reserved; must be zero */
char tzh_ttisutcnt[4]; /* coded number of trans. time flags */
char tzh_ttisstdcnt[4]; /* coded number of trans. time flags */
char tzh_leapcnt[4]; /* coded number of leap seconds */
char tzh_timecnt[4]; /* coded number of transition times */
char tzh_typecnt[4]; /* coded number of local time types */
char tzh_charcnt[4]; /* coded number of abbr. chars */
};
/*
** . . .followed by. . .
**
** tzh_timecnt (char [4])s coded transition times a la time(2)
** tzh_timecnt (unsigned char)s types of local time starting at above
** tzh_typecnt repetitions of
** one (char [4]) coded UT offset in seconds
** one (unsigned char) used to set tm_isdst
** one (unsigned char) that's an abbreviation list index
** tzh_charcnt (char)s '\0'-terminated zone abbreviations
** tzh_leapcnt repetitions of
** one (char [4]) coded leap second transition times
** one (char [4]) total correction after above
** tzh_ttisstdcnt (char)s indexed by type; if 1, transition
** time is standard time, if 0,
** transition time is local (wall clock)
** time; if absent, transition times are
** assumed to be local time
** tzh_ttisutcnt (char)s indexed by type; if 1, transition
** time is UT, if 0, transition time is
** local time; if absent, transition
** times are assumed to be local time.
** When this is 1, the corresponding
** std/wall indicator must also be 1.
*/
/*
** If tzh_version is '2' or greater, the above is followed by a second instance
** of tzhead and a second instance of the data in which each coded transition
** time uses 8 rather than 4 chars,
** then a POSIX.1-2017 proleptic TZ string for use in handling
** instants after the last transition time stored in the file
** (with nothing between the newlines if there is no POSIX.1-2017
** representation for such instants).
**
** If tz_version is '3' or greater, the TZ string can be any POSIX.1-2024
** proleptic TZ string, which means the above is extended as follows.
** First, the TZ string's hour offset may range from -167
** through 167 as compared to the range 0 through 24 required
** by POSIX.1-2017 and earlier.
** Second, its DST start time may be January 1 at 00:00 and its stop
** time December 31 at 24:00 plus the difference between DST and
** standard time, indicating DST all year.
*/
/*
** In the current implementation, "tzset()" refuses to deal with files that
** exceed any of the limits below.
*/
#ifndef TZ_MAX_TIMES
/* This must be at least 242 for Europe/London with 'zic -b fat'. */
# define TZ_MAX_TIMES 2000
#endif /* !defined TZ_MAX_TIMES */
#ifndef TZ_MAX_TYPES
/* This must be at least 18 for Europe/Vilnius with 'zic -b fat'. */
# define TZ_MAX_TYPES 256 /* Limited by what (unsigned char)'s can hold */
#endif /* !defined TZ_MAX_TYPES */
#ifndef TZ_MAX_CHARS
/* This must be at least 40 for America/Anchorage. */
# define TZ_MAX_CHARS 50 /* Maximum number of abbreviation characters */
/* (limited by what unsigned chars can hold) */
#endif /* !defined TZ_MAX_CHARS */
#ifndef TZ_MAX_LEAPS
/* This must be at least 27 for leap seconds from 1972 through mid-2023.
There's a plan to discontinue leap seconds by 2035. */
# define TZ_MAX_LEAPS 50 /* Maximum number of leap second corrections */
#endif /* !defined TZ_MAX_LEAPS */
#endif /* !defined TZFILE_H */

1
utils/test/c/timezone_test.c
View File

@ -78,7 +78,6 @@ void timezone_insert_test(){
/*
select today();
select cast(1 as timestamp) + '2013-04-12T10:52:01';
tsConver.sim
"COMPACT DATABASE test START WITH '2023-03-07 14:01:23' END WITH '2023-03-08 14:01:23'"
TK_TIMEZONE