#undef PERL_EFF_ACCESS /* EFFective uid/gid ACCESS */
-/* AIX 5.2 and below use mktime for localtime, and defines the edge case
- * for time 0x7fffffff to be valid only in UTC. AIX 5.3 provides localtime64
- * available in the 32bit environment, which could warrant Configure
- * checks in the future.
- */
-#ifdef _AIX
-#define LOCALTIME_EDGECASE_BROKEN
-#endif
-
/* F_OK unused: if stat() cannot find it... */
#if !defined(PERL_EFF_ACCESS) && defined(HAS_ACCESS) && defined(EFF_ONLY_OK) && !defined(NO_EFF_ONLY_OK)
#endif /* HAS_TIMES */
}
-#ifdef LOCALTIME_EDGECASE_BROKEN
-static struct tm *S_my_localtime (pTHX_ Time_t *tp)
-{
- auto time_t T;
- auto struct tm *P;
-
- /* No workarounds in the valid range */
- if (!tp || *tp < 0x7fff573f || *tp >= 0x80000000)
- return (localtime (tp));
-
- /* This edge case is to workaround the undefined behaviour, where the
- * TIMEZONE makes the time go beyond the defined range.
- * gmtime (0x7fffffff) => 2038-01-19 03:14:07
- * If there is a negative offset in TZ, like MET-1METDST, some broken
- * implementations of localtime () (like AIX 5.2) barf with bogus
- * return values:
- * 0x7fffffff gmtime 2038-01-19 03:14:07
- * 0x7fffffff localtime 1901-12-13 21:45:51
- * 0x7fffffff mylocaltime 2038-01-19 04:14:07
- * 0x3c19137f gmtime 2001-12-13 20:45:51
- * 0x3c19137f localtime 2001-12-13 21:45:51
- * 0x3c19137f mylocaltime 2001-12-13 21:45:51
- * Given that legal timezones are typically between GMT-12 and GMT+12
- * we turn back the clock 23 hours before calling the localtime
- * function, and add those to the return value. This will never cause
- * day wrapping problems, since the edge case is Tue Jan *19*
- */
- T = *tp - 82800; /* 23 hour. allows up to GMT-23 */
- P = localtime (&T);
- P->tm_hour += 23;
- if (P->tm_hour >= 24) {
- P->tm_hour -= 24;
- P->tm_mday++; /* 18 -> 19 */
- P->tm_wday++; /* Mon -> Tue */
- P->tm_yday++; /* 18 -> 19 */
- }
- return (P);
-} /* S_my_localtime */
-#endif
-
PP(pp_gmtime)
{
dVAR;
dSP;
Time64_T when;
- struct tm tmbuf;
- struct tm *err;
+ struct TM tmbuf;
+ struct TM *err;
static const char * const dayname[] =
{"Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat"};
static const char * const monname[] =
if (err == NULL)
RETPUSHUNDEF;
- tsv = Perl_newSVpvf(aTHX_ "%s %s %2d %02d:%02d:%02d %d",
+ tsv = Perl_newSVpvf(aTHX_ "%s %s %2d %02d:%02d:%02d %lld",
dayname[tmbuf.tm_wday],
monname[tmbuf.tm_mon],
tmbuf.tm_mday,
static const int length_of_year[2] = { 365, 366 };
/* Number of days in a 400 year Gregorian cycle */
-static const int years_in_gregorian_cycle = 400;
+static const Year years_in_gregorian_cycle = 400;
static const int days_in_gregorian_cycle = (365 * 400) + 100 - 4 + 1;
/* 28 year calendar cycle between 2010 and 2037 */
-static const int safe_years[28] = {
+#define SOLAR_CYCLE_LENGTH 28
+static const int safe_years[SOLAR_CYCLE_LENGTH] = {
2016, 2017, 2018, 2019,
2020, 2021, 2022, 2023,
2024, 2025, 2026, 2027,
2012, 2013, 2014, 2015
};
-#define SOLAR_CYCLE_LENGTH 28
static const int dow_year_start[SOLAR_CYCLE_LENGTH] = {
5, 0, 1, 2, /* 0 2016 - 2019 */
3, 5, 6, 0, /* 4 */
)
-int _is_exception_century(Int64 year)
+static int is_exception_century(Int64 year)
{
int is_exception = ((year % 100 == 0) && !(year % 400 == 0));
/* printf("is_exception_century: %s\n", is_exception ? "yes" : "no"); */
}
-/* timegm() is a GNU extension, so emulate it here if we need it */
-#ifdef HAS_TIMEGM
-# define TIMEGM(n) timegm(n);
-#else
-# define TIMEGM(n) ((time_t)timegm64(n));
-#endif
-
-Time64_T timegm64(struct tm *date) {
+Time64_T timegm64(struct TM *date) {
int days = 0;
Int64 seconds = 0;
Int64 year;
}
-int _check_tm(struct tm *tm)
+static int check_tm(struct TM *tm)
{
/* Don't forget leap seconds */
assert(tm->tm_sec >= 0);
/* The exceptional centuries without leap years cause the cycle to
shift by 16
*/
-Year _cycle_offset(Year year)
+static Year cycle_offset(Year year)
{
const Year start_year = 2000;
Year year_diff = year - start_year;
It doesn't need the same leap year status since we only care about
January 1st.
*/
-int _safe_year(Year year)
+static int safe_year(Year year)
{
int safe_year;
- Year year_cycle = year + _cycle_offset(year);
+ Year year_cycle = year + cycle_offset(year);
/* Change non-leap xx00 years to an equivalent */
- if( _is_exception_century(year) )
+ if( is_exception_century(year) )
year_cycle += 11;
/* Also xx01 years, since the previous year will be wrong */
- if( _is_exception_century(year - 1) )
+ if( is_exception_century(year - 1) )
year_cycle += 17;
year_cycle %= SOLAR_CYCLE_LENGTH;
}
+void copy_tm_to_TM(const struct tm *src, struct TM *dest) {
+ if( src == NULL ) {
+ memset(dest, 0, sizeof(*dest));
+ }
+ else {
+# ifdef USE_TM64
+ dest->tm_sec = src->tm_sec;
+ dest->tm_min = src->tm_min;
+ dest->tm_hour = src->tm_hour;
+ dest->tm_mday = src->tm_mday;
+ dest->tm_mon = src->tm_mon;
+ dest->tm_year = (Year)src->tm_year;
+ dest->tm_wday = src->tm_wday;
+ dest->tm_yday = src->tm_yday;
+ dest->tm_isdst = src->tm_isdst;
+
+# ifdef HAS_TM_TM_GMTOFF
+ dest->tm_gmtoff = src->tm_gmtoff;
+# endif
+
+# ifdef HAS_TM_TM_ZONE
+ dest->tm_zone = src->tm_zone;
+# endif
+
+# else
+ /* They're the same type */
+ memcpy(dest, src, sizeof(*dest));
+# endif
+ }
+}
+
+
+void copy_TM_to_tm(const struct TM *src, struct tm *dest) {
+ if( src == NULL ) {
+ memset(dest, 0, sizeof(*dest));
+ }
+ else {
+# ifdef USE_TM64
+ dest->tm_sec = src->tm_sec;
+ dest->tm_min = src->tm_min;
+ dest->tm_hour = src->tm_hour;
+ dest->tm_mday = src->tm_mday;
+ dest->tm_mon = src->tm_mon;
+ dest->tm_year = (int)src->tm_year;
+ dest->tm_wday = src->tm_wday;
+ dest->tm_yday = src->tm_yday;
+ dest->tm_isdst = src->tm_isdst;
+
+# ifdef HAS_TM_TM_GMTOFF
+ dest->tm_gmtoff = src->tm_gmtoff;
+# endif
+
+# ifdef HAS_TM_TM_ZONE
+ dest->tm_zone = src->tm_zone;
+# endif
+
+# else
+ /* They're the same type */
+ memcpy(dest, src, sizeof(*dest));
+# endif
+ }
+}
+
+
/* Simulate localtime_r() to the best of our ability */
struct tm * fake_localtime_r(const time_t *clock, struct tm *result) {
const struct tm *static_result = localtime(clock);
}
-struct tm *gmtime64_r (const Time64_T *in_time, struct tm *p)
+struct TM *gmtime64_r (const Time64_T *in_time, struct TM *p)
{
int v_tm_sec, v_tm_min, v_tm_hour, v_tm_mon, v_tm_wday;
Int64 v_tm_tday;
Int64 m;
Time64_T time = *in_time;
Year year = 70;
+ int cycles = 0;
assert(p != NULL);
/* Use the system gmtime() if time_t is small enough */
if( SHOULD_USE_SYSTEM_GMTIME(*in_time) ) {
time_t safe_time = *in_time;
- GMTIME_R(&safe_time, p);
- assert(_check_tm(p));
+ struct tm safe_date;
+ GMTIME_R(&safe_time, &safe_date);
+
+ copy_tm_to_TM(&safe_date, p);
+ assert(check_tm(p));
+
return p;
}
if (m >= 0) {
/* Gregorian cycles, this is huge optimization for distant times */
- while (m >= (Time64_T) days_in_gregorian_cycle) {
- m -= (Time64_T) days_in_gregorian_cycle;
- year += years_in_gregorian_cycle;
+ cycles = floor(m / (Time64_T) days_in_gregorian_cycle);
+ if( cycles ) {
+ m -= (cycles * (Time64_T) days_in_gregorian_cycle);
+ year += (cycles * years_in_gregorian_cycle);
}
/* Years */
year--;
/* Gregorian cycles */
- while (m < (Time64_T) -days_in_gregorian_cycle) {
- m += (Time64_T) days_in_gregorian_cycle;
- year -= years_in_gregorian_cycle;
+ cycles = ceil(m / (Time64_T) days_in_gregorian_cycle) + 1;
+ if( cycles ) {
+ m -= (cycles * (Time64_T) days_in_gregorian_cycle);
+ year += (cycles * years_in_gregorian_cycle);
}
/* Years */
p->tm_sec = v_tm_sec, p->tm_min = v_tm_min, p->tm_hour = v_tm_hour,
p->tm_mon = v_tm_mon, p->tm_wday = v_tm_wday;
- assert(_check_tm(p));
+ assert(check_tm(p));
return p;
}
-struct tm *localtime64_r (const Time64_T *time, struct tm *local_tm)
+struct TM *localtime64_r (const Time64_T *time, struct TM *local_tm)
{
time_t safe_time;
- struct tm gm_tm;
+ struct tm safe_date;
+ struct TM gm_tm;
Year orig_year;
int month_diff;
/* Use the system localtime() if time_t is small enough */
if( SHOULD_USE_SYSTEM_LOCALTIME(*time) ) {
safe_time = *time;
- LOCALTIME_R(&safe_time, local_tm);
- assert(_check_tm(local_tm));
+
+ LOCALTIME_R(&safe_time, &safe_date);
+
+ copy_tm_to_TM(&safe_date, local_tm);
+ assert(check_tm(local_tm));
+
return local_tm;
}
gm_tm.tm_year < (1902 - 1900)
)
{
- gm_tm.tm_year = _safe_year(gm_tm.tm_year + 1900) - 1900;
+ gm_tm.tm_year = safe_year(gm_tm.tm_year + 1900) - 1900;
}
- safe_time = TIMEGM(&gm_tm);
- if( LOCALTIME_R(&safe_time, local_tm) == NULL )
+ safe_time = timegm64(&gm_tm);
+ if( LOCALTIME_R(&safe_time, &safe_date) == NULL )
return NULL;
+ copy_tm_to_TM(&safe_date, local_tm);
+
local_tm->tm_year = orig_year;
if( local_tm->tm_year != orig_year ) {
#ifdef EOVERFLOW
if( !IS_LEAP(local_tm->tm_year) && local_tm->tm_yday == 365 )
local_tm->tm_yday--;
- assert(_check_tm(local_tm));
+ assert(check_tm(local_tm));
return local_tm;
}
projects / p5sagit/p5-mst-13.2.git / commitdiff