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-rw-r--r--lib/mlibc/options/ansi/generic/time-stubs.cpp729
1 files changed, 0 insertions, 729 deletions
diff --git a/lib/mlibc/options/ansi/generic/time-stubs.cpp b/lib/mlibc/options/ansi/generic/time-stubs.cpp
deleted file mode 100644
index b8c7cf5..0000000
--- a/lib/mlibc/options/ansi/generic/time-stubs.cpp
+++ /dev/null
@@ -1,729 +0,0 @@
-
-#include <errno.h>
-#include <stdio.h>
-#include <string.h>
-#include <time.h>
-#include <limits.h>
-#include <wchar.h>
-#include <stdlib.h>
-#include <ctype.h>
-
-#include <bits/ensure.h>
-#include <mlibc/debug.hpp>
-#include <mlibc/file-window.hpp>
-#include <mlibc/ansi-sysdeps.hpp>
-#include <mlibc/allocator.hpp>
-#include <mlibc/lock.hpp>
-#include <mlibc/locale.hpp>
-#include <mlibc/bitutil.hpp>
-#include <mlibc/strings.hpp>
-
-#include <frg/mutex.hpp>
-
-const char __utc[] = "UTC";
-
-// Variables defined by POSIX.
-int daylight;
-long timezone;
-char *tzname[2];
-
-static FutexLock __time_lock;
-static file_window *get_localtime_window() {
- static file_window window{"/etc/localtime"};
- return &window;
-}
-
-// Function taken from musl
-clock_t clock(void) {
- struct timespec ts;
-
- if(clock_gettime(CLOCK_PROCESS_CPUTIME_ID, &ts))
- return -1;
-
- if(ts.tv_sec > LONG_MAX / 1000000 || ts.tv_nsec / 1000 > LONG_MAX - 1000000 * ts.tv_sec)
- return -1;
-
- return ts.tv_sec * 1000000 + ts.tv_nsec / 1000;
-}
-
-double difftime(time_t a, time_t b) {
- return a - b;
-}
-
-time_t mktime(struct tm *tm) {
- return timegm(tm);
-}
-
-/* There is no other implemented value than TIME_UTC; all other values
- * are considered erroneous. */
-// Function taken from musl
-int timespec_get(struct timespec *ts, int base) {
- if(base != TIME_UTC)
- return 0;
- int ret = clock_gettime(CLOCK_REALTIME, ts);
- return ret < 0 ? 0 : base;
-}
-
-char *asctime(const struct tm *ptr) {
- static char buf[26];
- return asctime_r(ptr, buf);
-}
-
-char *ctime(const time_t *timer) {
- struct tm *tm = localtime(timer);
- if(!tm) {
- return 0;
- }
- return asctime(tm);
-}
-
-struct tm *gmtime(const time_t *unix_gmt) {
- static thread_local struct tm per_thread_tm;
- return gmtime_r(unix_gmt, &per_thread_tm);
-}
-
-struct tm *localtime(const time_t *unix_gmt) {
- tzset();
- static thread_local struct tm per_thread_tm;
- return localtime_r(unix_gmt, &per_thread_tm);
-}
-
-size_t strftime(char *__restrict dest, size_t max_size,
- const char *__restrict format, const struct tm *__restrict tm) {
- auto c = format;
- auto p = dest;
-
- while(*c) {
- int chunk;
- auto space = (dest + max_size) - p;
- __ensure(space >= 0);
-
- if(*c != '%') {
- if(!space)
- return 0;
- *p = *c;
- c++;
- p++;
- continue;
- }
-
- switch(*++c) {
- case 'Y': {
- chunk = snprintf(p, space, "%d", 1900 + tm->tm_year);
- if(chunk >= space)
- return 0;
- p += chunk;
- c++;
- break;
- }
- case 'm': {
- chunk = snprintf(p, space, "%.2d", tm->tm_mon + 1);
- if(chunk >= space)
- return 0;
- p += chunk;
- c++;
- break;
- }
- case 'd': {
- chunk = snprintf(p, space, "%.2d", tm->tm_mday);
- if(chunk >= space)
- return 0;
- p += chunk;
- c++;
- break;
- }
- case 'Z': {
- chunk = snprintf(p, space, "%s", "GMT");
- if(chunk >= space)
- return 0;
- p += chunk;
- c++;
- break;
- }
- case 'H': {
- chunk = snprintf(p, space, "%.2i", tm->tm_hour);
- if(chunk >= space)
- return 0;
- p += chunk;
- c++;
- break;
- }
- case 'M': {
- chunk = snprintf(p, space, "%.2i", tm->tm_min);
- if(chunk >= space)
- return 0;
- p += chunk;
- c++;
- break;
- }
- case 'S': {
- chunk = snprintf(p, space, "%.2d", tm->tm_sec);
- if(chunk >= space)
- return 0;
- p += chunk;
- c++;
- break;
- }
- case 'R': {
- chunk = snprintf(p, space, "%.2i:%.2i", tm->tm_hour, tm->tm_min);
- if(chunk >= space)
- return 0;
- p += chunk;
- c++;
- break;
- }
- case 'T': {
- chunk = snprintf(p, space, "%.2i:%.2i:%.2i", tm->tm_hour, tm->tm_min, tm->tm_sec);
- if(chunk >= space)
- return 0;
- p += chunk;
- c++;
- break;
- }
- case 'F': {
- chunk = snprintf(p, space, "%d-%.2d-%.2d", 1900 + tm->tm_year, tm->tm_mon + 1,
- tm->tm_mday);
- if(chunk >= space)
- return 0;
- p += chunk;
- c++;
- break;
- }
- case 'D': {
- chunk = snprintf(p, space, "%.2d/%.2d/%.2d", tm->tm_mon + 1, tm->tm_mday, tm->tm_year % 100);
- if(chunk >= space)
- return 0;
- p += chunk;
- c++;
- break;
- }
- case 'a': {
- int day = tm->tm_wday;
- if(day < 0 || day > 6)
- __ensure(!"Day not in bounds.");
-
- chunk = snprintf(p, space, "%s", mlibc::nl_langinfo(ABDAY_1 + day));
- if(chunk >= space)
- return 0;
- p += chunk;
- c++;
- break;
- }
- case 'b':
- case 'B':
- case 'h': {
- int mon = tm->tm_mon;
- if(mon < 0 || mon > 11)
- __ensure(!"Month not in bounds.");
-
- nl_item item = (*c == 'B') ? MON_1 : ABMON_1;
-
- chunk = snprintf(p, space, "%s", mlibc::nl_langinfo(item + mon));
- if(chunk >= space)
- return 0;
- p += chunk;
- c++;
- break;
- }
- case 'c': {
- chunk = snprintf(p, space, "%d/%.2d/%.2d %.2d:%.2d:%.2d", 1900 + tm->tm_year,
- tm->tm_mon + 1, tm->tm_mday, tm->tm_hour, tm->tm_min, tm->tm_sec);
- if(chunk >= space)
- return 0;
- p += chunk;
- c++;
- break;
- }
- case 'e': {
- chunk = snprintf(p, space, "%2d", tm->tm_mday);
- if(chunk >= space)
- return 0;
- p += chunk;
- c++;
- break;
- }
- case 'l': {
- int hour = tm->tm_hour;
- if(!hour)
- hour = 12;
- if(hour > 12)
- hour -= 12;
- chunk = snprintf(p, space, "%2d", hour);
- if(chunk >= space)
- return 0;
- p += chunk;
- c++;
- break;
- }
- case 'I': {
- int hour = tm->tm_hour;
- if(!hour)
- hour = 12;
- if(hour > 12)
- hour -= 12;
- chunk = snprintf(p, space, "%.2d", hour);
- if(chunk >= space)
- return 0;
- p += chunk;
- c++;
- break;
- }
- case 'p': {
- chunk = snprintf(p, space, "%s", mlibc::nl_langinfo((tm->tm_hour < 12) ? AM_STR : PM_STR));
- if(chunk >= space)
- return 0;
- p += chunk;
- c++;
- break;
- }
- case 'C': {
- chunk = snprintf(p, space, "%.2d", (1900 + tm->tm_year) / 100);
- if(chunk >= space)
- return 0;
- p += chunk;
- c++;
- break;
- }
- case 'y': {
- chunk = snprintf(p, space, "%.2d", (1900 + tm->tm_year) % 100);
- if(chunk >= space)
- return 0;
- p += chunk;
- c++;
- break;
- }
- case 'j': {
- chunk = snprintf(p, space, "%.3d", tm->tm_yday + 1);
- if(chunk >= space)
- return 0;
- p += chunk;
- c++;
- break;
- }
- case 'A': {
- chunk = snprintf(p, space, "%s", mlibc::nl_langinfo(DAY_1 + tm->tm_wday));
- if(chunk >= space)
- return 0;
- p += chunk;
- c++;
- break;
- }
- case 'r': {
- int hour = tm->tm_hour;
- if(!hour)
- hour = 12;
- if(hour > 12)
- hour -= 12;
- chunk = snprintf(p, space, "%.2i:%.2i:%.2i %s", hour, tm->tm_min, tm->tm_sec,
- mlibc::nl_langinfo((tm->tm_hour < 12) ? AM_STR : PM_STR));
- if(chunk >= space)
- return 0;
- p += chunk;
- c++;
- break;
- }
- case '%': {
- chunk = snprintf(p, space, "%%");
- if(chunk >= space)
- return 0;
- p += chunk;
- c++;
- break;
- }
- case 't': {
- chunk = snprintf(p, space, "\t");
- if(chunk >= space)
- return 0;
- p += chunk;
- c++;
- break;
- }
- case 'x': {
- return strftime(dest, max_size, mlibc::nl_langinfo(D_FMT), tm);
- }
- case 'X': {
- return strftime(dest, max_size, mlibc::nl_langinfo(T_FMT), tm);
- }
- case '\0': {
- chunk = snprintf(p, space, "%%");
- if(chunk >= space)
- return 0;
- p += chunk;
- break;
- }
- default:
- mlibc::panicLogger() << "mlibc: strftime unknown format type: " << c << frg::endlog;
- }
- }
-
- auto space = (dest + max_size) - p;
- if(!space)
- return 0;
-
- *p = '\0';
- return (p - dest);
-}
-
-size_t wcsftime(wchar_t *__restrict, size_t, const wchar_t *__restrict,
- const struct tm *__restrict) {
- mlibc::infoLogger() << "mlibc: wcsftime is a stub" << frg::endlog;
- return 0;
-}
-
-namespace {
-
-struct tzfile {
- uint8_t magic[4];
- uint8_t version;
- uint8_t reserved[15];
- uint32_t tzh_ttisgmtcnt;
- uint32_t tzh_ttisstdcnt;
- uint32_t tzh_leapcnt;
- uint32_t tzh_timecnt;
- uint32_t tzh_typecnt;
- uint32_t tzh_charcnt;
-};
-
-struct[[gnu::packed]] ttinfo {
- int32_t tt_gmtoff;
- unsigned char tt_isdst;
- unsigned char tt_abbrind;
-};
-
-}
-
-// TODO(geert): this function doesn't parse the TZ environment variable
-// or properly handle the case where information might be missing from /etc/localtime
-// also we should probably unify the code for this and unix_local_from_gmt()
-void tzset(void) {
- frg::unique_lock<FutexLock> lock(__time_lock);
- // TODO(geert): we can probably cache this somehow
- tzfile tzfile_time;
- memcpy(&tzfile_time, reinterpret_cast<char *>(get_localtime_window()->get()), sizeof(tzfile));
- tzfile_time.tzh_ttisgmtcnt = mlibc::bit_util<uint32_t>::byteswap(tzfile_time.tzh_ttisgmtcnt);
- tzfile_time.tzh_ttisstdcnt = mlibc::bit_util<uint32_t>::byteswap(tzfile_time.tzh_ttisstdcnt);
- tzfile_time.tzh_leapcnt = mlibc::bit_util<uint32_t>::byteswap(tzfile_time.tzh_leapcnt);
- tzfile_time.tzh_timecnt = mlibc::bit_util<uint32_t>::byteswap(tzfile_time.tzh_timecnt);
- tzfile_time.tzh_typecnt = mlibc::bit_util<uint32_t>::byteswap(tzfile_time.tzh_typecnt);
- tzfile_time.tzh_charcnt = mlibc::bit_util<uint32_t>::byteswap(tzfile_time.tzh_charcnt);
-
- if(tzfile_time.magic[0] != 'T' || tzfile_time.magic[1] != 'Z' || tzfile_time.magic[2] != 'i'
- || tzfile_time.magic[3] != 'f') {
- mlibc::infoLogger() << "mlibc: /etc/localtime is not a valid TZinfo file" << frg::endlog;
- return;
- }
-
- if(tzfile_time.version != '\0' && tzfile_time.version != '2' && tzfile_time.version != '3') {
- mlibc::infoLogger() << "mlibc: /etc/localtime has an invalid TZinfo version"
- << frg::endlog;
- return;
- }
-
- // There should be at least one entry in the ttinfo table.
- // TODO: If there is not, we might want to fall back to UTC, no DST (?).
- __ensure(tzfile_time.tzh_typecnt);
-
- char *abbrevs = reinterpret_cast<char *>(get_localtime_window()->get()) + sizeof(tzfile)
- + tzfile_time.tzh_timecnt * sizeof(int32_t)
- + tzfile_time.tzh_timecnt * sizeof(uint8_t)
- + tzfile_time.tzh_typecnt * sizeof(struct ttinfo);
- // start from the last ttinfo entry, this matches the behaviour of glibc and musl
- for (int i = tzfile_time.tzh_typecnt; i > 0; i--) {
- ttinfo time_info;
- memcpy(&time_info, reinterpret_cast<char *>(get_localtime_window()->get()) + sizeof(tzfile)
- + tzfile_time.tzh_timecnt * sizeof(int32_t)
- + tzfile_time.tzh_timecnt * sizeof(uint8_t)
- + i * sizeof(ttinfo), sizeof(ttinfo));
- time_info.tt_gmtoff = mlibc::bit_util<uint32_t>::byteswap(time_info.tt_gmtoff);
- if (!time_info.tt_isdst && !tzname[0]) {
- tzname[0] = abbrevs + time_info.tt_abbrind;
- timezone = -time_info.tt_gmtoff;
- }
- if (time_info.tt_isdst && !tzname[1]) {
- tzname[1] = abbrevs + time_info.tt_abbrind;
- timezone = -time_info.tt_gmtoff;
- daylight = 1;
- }
- }
-}
-
-// POSIX extensions.
-
-int nanosleep(const struct timespec *req, struct timespec *) {
- if (req->tv_sec < 0 || req->tv_nsec > 999999999 || req->tv_nsec < 0) {
- errno = EINVAL;
- return -1;
- }
-
- if(!mlibc::sys_sleep) {
- MLIBC_MISSING_SYSDEP();
- __ensure(!"Cannot continue without sys_sleep()");
- }
-
- struct timespec tmp = *req;
-
- int e = mlibc::sys_sleep(&tmp.tv_sec, &tmp.tv_nsec);
- if (!e) {
- return 0;
- } else {
- errno = e;
- return -1;
- }
-}
-
-int clock_getres(clockid_t clockid, struct timespec *res) {
- MLIBC_CHECK_OR_ENOSYS(mlibc::sys_clock_getres, -1);
- if(int e = mlibc::sys_clock_getres(clockid, &res->tv_sec, &res->tv_nsec); e) {
- errno = e;
- return -1;
- }
- return 0;
-}
-
-int clock_gettime(clockid_t clock, struct timespec *time) {
- if(int e = mlibc::sys_clock_get(clock, &time->tv_sec, &time->tv_nsec); e) {
- errno = e;
- return -1;
- }
- return 0;
-}
-
-int clock_nanosleep(clockid_t clockid, int, const struct timespec *req, struct timespec *) {
- mlibc::infoLogger() << "clock_nanosleep is implemented as nanosleep!" << frg::endlog;
- __ensure(clockid == CLOCK_REALTIME || clockid == CLOCK_MONOTONIC);
- return nanosleep(req, nullptr);
-}
-
-int clock_settime(clockid_t, const struct timespec *) {
- __ensure(!"Not implemented");
- __builtin_unreachable();
-}
-
-time_t time(time_t *out) {
- time_t secs;
- long nanos;
- if(int e = mlibc::sys_clock_get(CLOCK_REALTIME, &secs, &nanos); e) {
- errno = e;
- return (time_t)-1;
- }
- if(out)
- *out = secs;
- return secs;
-}
-
-namespace {
-
-void civil_from_days(time_t days_since_epoch, int *year, unsigned int *month, unsigned int *day) {
- time_t time = days_since_epoch + 719468;
- int era = (time >= 0 ? time : time - 146096) / 146097;
- unsigned int doe = static_cast<unsigned int>(time - era * 146097);
- unsigned int yoe = (doe - doe/1460 + doe/36524 - doe/146096) / 365;
- int y = static_cast<int>(yoe) + era * 400;
- unsigned int doy = doe - (365*yoe + yoe/4 - yoe/100);
- unsigned int mp = (5*doy + 2)/153;
- unsigned int d = doy - (153*mp+2)/5 + 1;
- unsigned int m = mp + (mp < 10 ? 3 : -9);
-
- *year = y + (m <= 2);
- *month = m;
- *day = d;
-}
-
-void weekday_from_days(time_t days_since_epoch, unsigned int *weekday) {
- *weekday = static_cast<unsigned int>(days_since_epoch >= -4 ?
- (days_since_epoch+4) % 7 : (days_since_epoch+5) % 7 + 6);
-}
-
-void yearday_from_date(unsigned int year, unsigned int month, unsigned int day, unsigned int *yday) {
- unsigned int n1 = 275 * month / 9;
- unsigned int n2 = (month + 9) / 12;
- unsigned int n3 = (1 + (year - 4 * year / 4 + 2) / 3);
- *yday = n1 - (n2 * n3) + day - 30;
-}
-
-// Looks up the local time rules for a given
-// UNIX GMT timestamp (seconds since 1970 GMT, ignoring leap seconds).
-// This function assumes the __time_lock has been taken
-// TODO(geert): if /etc/localtime isn't available this will fail... In that case
-// we should call tzset() and use the variables to compute the variables from
-// the tzset() global variables. Look at the musl code for how to do that
-int unix_local_from_gmt(time_t unix_gmt, time_t *offset, bool *dst, char **tm_zone) {
- tzfile tzfile_time;
- memcpy(&tzfile_time, reinterpret_cast<char *>(get_localtime_window()->get()), sizeof(tzfile));
- tzfile_time.tzh_ttisgmtcnt = mlibc::bit_util<uint32_t>::byteswap(tzfile_time.tzh_ttisgmtcnt);
- tzfile_time.tzh_ttisstdcnt = mlibc::bit_util<uint32_t>::byteswap(tzfile_time.tzh_ttisstdcnt);
- tzfile_time.tzh_leapcnt = mlibc::bit_util<uint32_t>::byteswap(tzfile_time.tzh_leapcnt);
- tzfile_time.tzh_timecnt = mlibc::bit_util<uint32_t>::byteswap(tzfile_time.tzh_timecnt);
- tzfile_time.tzh_typecnt = mlibc::bit_util<uint32_t>::byteswap(tzfile_time.tzh_typecnt);
- tzfile_time.tzh_charcnt = mlibc::bit_util<uint32_t>::byteswap(tzfile_time.tzh_charcnt);
-
- if(tzfile_time.magic[0] != 'T' || tzfile_time.magic[1] != 'Z' || tzfile_time.magic[2] != 'i'
- || tzfile_time.magic[3] != 'f') {
- mlibc::infoLogger() << "mlibc: /etc/localtime is not a valid TZinfo file" << frg::endlog;
- return -1;
- }
-
- if(tzfile_time.version != '\0' && tzfile_time.version != '2' && tzfile_time.version != '3') {
- mlibc::infoLogger() << "mlibc: /etc/localtime has an invalid TZinfo version"
- << frg::endlog;
- return -1;
- }
-
- int index = -1;
- for(size_t i = 0; i < tzfile_time.tzh_timecnt; i++) {
- int32_t ttime;
- memcpy(&ttime, reinterpret_cast<char *>(get_localtime_window()->get()) + sizeof(tzfile)
- + i * sizeof(int32_t), sizeof(int32_t));
- ttime = mlibc::bit_util<uint32_t>::byteswap(ttime);
- // If we are before the first transition, the format dicates that
- // the first ttinfo entry should be used (and not the ttinfo entry pointed
- // to by the first transition time).
- if(i && ttime > unix_gmt) {
- index = i - 1;
- break;
- }
- }
-
- // The format dictates that if no transition is applicable,
- // the first entry in the file is chosen.
- uint8_t ttinfo_index = 0;
- if(index >= 0) {
- memcpy(&ttinfo_index, reinterpret_cast<char *>(get_localtime_window()->get()) + sizeof(tzfile)
- + tzfile_time.tzh_timecnt * sizeof(int32_t)
- + index * sizeof(uint8_t), sizeof(uint8_t));
- }
-
- // There should be at least one entry in the ttinfo table.
- // TODO: If there is not, we might want to fall back to UTC, no DST (?).
- __ensure(tzfile_time.tzh_typecnt);
-
- ttinfo time_info;
- memcpy(&time_info, reinterpret_cast<char *>(get_localtime_window()->get()) + sizeof(tzfile)
- + tzfile_time.tzh_timecnt * sizeof(int32_t)
- + tzfile_time.tzh_timecnt * sizeof(uint8_t)
- + ttinfo_index * sizeof(ttinfo), sizeof(ttinfo));
- time_info.tt_gmtoff = mlibc::bit_util<uint32_t>::byteswap(time_info.tt_gmtoff);
-
- char *abbrevs = reinterpret_cast<char *>(get_localtime_window()->get()) + sizeof(tzfile)
- + tzfile_time.tzh_timecnt * sizeof(int32_t)
- + tzfile_time.tzh_timecnt * sizeof(uint8_t)
- + tzfile_time.tzh_typecnt * sizeof(struct ttinfo);
-
- *offset = time_info.tt_gmtoff;
- *dst = time_info.tt_isdst;
- *tm_zone = abbrevs + time_info.tt_abbrind;
- return 0;
-}
-
-} //anonymous namespace
-
-struct tm *gmtime_r(const time_t *unix_gmt, struct tm *res) {
- int year;
- unsigned int month;
- unsigned int day;
- unsigned int weekday;
- unsigned int yday;
-
- time_t unix_local = *unix_gmt;
-
- int days_since_epoch = unix_local / (60*60*24);
- civil_from_days(days_since_epoch, &year, &month, &day);
- weekday_from_days(days_since_epoch, &weekday);
- yearday_from_date(year, month, day, &yday);
-
- res->tm_sec = unix_local % 60;
- res->tm_min = (unix_local / 60) % 60;
- res->tm_hour = (unix_local / (60*60)) % 24;
- res->tm_mday = day;
- res->tm_mon = month - 1;
- res->tm_year = year - 1900;
- res->tm_wday = weekday;
- res->tm_yday = yday - 1;
- res->tm_isdst = -1;
- res->tm_zone = __utc;
- res->tm_gmtoff = 0;
-
- return res;
-}
-
-struct tm *localtime_r(const time_t *unix_gmt, struct tm *res) {
- int year;
- unsigned int month;
- unsigned int day;
- unsigned int weekday;
- unsigned int yday;
-
- time_t offset = 0;
- bool dst;
- char *tm_zone;
- frg::unique_lock<FutexLock> lock(__time_lock);
- // TODO: Set errno if the conversion fails.
- if(unix_local_from_gmt(*unix_gmt, &offset, &dst, &tm_zone)) {
- __ensure(!"Error parsing /etc/localtime");
- __builtin_unreachable();
- }
- time_t unix_local = *unix_gmt + offset;
-
- int days_since_epoch = unix_local / (60*60*24);
- civil_from_days(days_since_epoch, &year, &month, &day);
- weekday_from_days(days_since_epoch, &weekday);
- yearday_from_date(year, month, day, &yday);
-
- res->tm_sec = unix_local % 60;
- res->tm_min = (unix_local / 60) % 60;
- res->tm_hour = (unix_local / (60*60)) % 24;
- res->tm_mday = day;
- res->tm_mon = month - 1;
- res->tm_year = year - 1900;
- res->tm_wday = weekday;
- res->tm_yday = yday - 1;
- res->tm_isdst = dst;
- res->tm_zone = tm_zone;
- res->tm_gmtoff = offset;
-
- return res;
-}
-
-// This implementation of asctime_r is taken from sortix
-char *asctime_r(const struct tm *tm, char *buf) {
- static char weekday_names[7][4] =
- { "Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat" };
- static char month_names[12][4] =
- { "Jan", "Feb", "Mar", "Apr", "May", "Jun", "Jul", "Aug", "Sep", "Oct",
- "Nov", "Dec" };
- sprintf(buf, "%.3s %.3s%3d %.2d:%.2d%.2d %d\n",
- weekday_names[tm->tm_wday],
- month_names[tm->tm_mon],
- tm->tm_mday,
- tm->tm_hour,
- tm->tm_min,
- tm->tm_sec,
- tm->tm_year + 1900);
- return buf;
-}
-
-char *ctime_r(const time_t *clock, char *buf) {
- return asctime_r(localtime(clock), buf);
-}
-
-time_t timelocal(struct tm *) {
- __ensure(!"Not implemented");
- __builtin_unreachable();
-}
-
-constexpr static int days_from_civil(int y, unsigned m, unsigned d) noexcept {
- y -= m <= 2;
- const int era = (y >= 0 ? y : y - 399) / 400;
- const unsigned yoe = static_cast<unsigned>(y - era * 400); // [0, 399]
- const unsigned doy = (153 * (m > 2 ? m - 3 : m + 9) + 2) / 5 + d - 1; // [0, 365]
- const unsigned doe = yoe * 365 + yoe / 4 - yoe / 100 + doy; // [0, 146096]
- return era * 146097 + static_cast<int>(doe) - 719468;
-}
-
-time_t timegm(struct tm *tm) {
- time_t year = tm->tm_year + 1900;
- time_t month = tm->tm_mon + 1;
- time_t days = days_from_civil(year, month, tm->tm_mday);
- time_t secs = (days * 86400) + (tm->tm_hour * 60 * 60) + (tm->tm_min * 60) + tm->tm_sec;
- return secs;
-}
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-08 01:55:06 +0000