diff options
Diffstat (limited to 'lib')
| -rw-r--r-- | lib/libc/stdtime/asctime.c | 61 | ||||
| -rw-r--r-- | lib/libc/stdtime/difftime.c | 77 | ||||
| -rw-r--r-- | lib/libc/stdtime/localtime.c | 1617 | ||||
| -rw-r--r-- | lib/libc/stdtime/private.h | 252 | ||||
| -rw-r--r-- | lib/libc/stdtime/strftime.c | 604 | ||||
| -rw-r--r-- | lib/libc/stdtime/time2posix.3 | 119 |
6 files changed, 0 insertions, 2730 deletions
diff --git a/lib/libc/stdtime/asctime.c b/lib/libc/stdtime/asctime.c deleted file mode 100644 index a1834b65a273..000000000000 --- a/lib/libc/stdtime/asctime.c +++ /dev/null @@ -1,61 +0,0 @@ -/* -** This file is in the public domain, so clarified as of -** June 5, 1996 by Arthur David Olson (arthur_david_olson@nih.gov). -*/ - -#ifndef lint -#ifndef NOID -static char elsieid[] = "@(#)asctime.c 7.7"; -#endif /* !defined NOID */ -#endif /* !defined lint */ - -/*LINTLIBRARY*/ - -#include "private.h" -#include "tzfile.h" - -/* -** A la X3J11, with core dump avoidance. -*/ - -char * -asctime(timeptr) -register const struct tm * timeptr; -{ - static const char wday_name[][3] = { - "Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat" - }; - static const char mon_name[][3] = { - "Jan", "Feb", "Mar", "Apr", "May", "Jun", - "Jul", "Aug", "Sep", "Oct", "Nov", "Dec" - }; - /* - ** Big enough for something such as - ** ??? ???-2147483648 -2147483648:-2147483648:-2147483648 -2147483648\n - ** (two three-character abbreviations, five strings denoting integers, - ** three explicit spaces, two explicit colons, a newline, - ** and a trailing ASCII nul). - */ - static char result[3 * 2 + 5 * INT_STRLEN_MAXIMUM(int) + - 3 + 2 + 1 + 1]; - register const char * wn; - register const char * mn; - - if (timeptr->tm_wday < 0 || timeptr->tm_wday >= DAYSPERWEEK) - wn = "???"; - else wn = wday_name[timeptr->tm_wday]; - if (timeptr->tm_mon < 0 || timeptr->tm_mon >= MONSPERYEAR) - mn = "???"; - else mn = mon_name[timeptr->tm_mon]; - /* - ** The X3J11-suggested format is - ** "%.3s %.3s%3d %02.2d:%02.2d:%02.2d %d\n" - ** Since the .2 in 02.2d is ignored, we drop it. - */ - (void) sprintf(result, "%.3s %.3s%3d %02d:%02d:%02d %d\n", - wn, mn, - timeptr->tm_mday, timeptr->tm_hour, - timeptr->tm_min, timeptr->tm_sec, - TM_YEAR_BASE + timeptr->tm_year); - return result; -} diff --git a/lib/libc/stdtime/difftime.c b/lib/libc/stdtime/difftime.c deleted file mode 100644 index f178524f5152..000000000000 --- a/lib/libc/stdtime/difftime.c +++ /dev/null @@ -1,77 +0,0 @@ -/* -** This file is in the public domain, so clarified as of -** June 5, 1996 by Arthur David Olson (arthur_david_olson@nih.gov). -*/ - -#ifndef lint -#ifndef NOID -static char elsieid[] = "@(#)difftime.c 7.7"; -#endif /* !defined NOID */ -#endif /* !defined lint */ - -/*LINTLIBRARY*/ - -#include "private.h" - -/* -** Algorithm courtesy Paul Eggert (eggert@twinsun.com). -*/ - -#ifdef HAVE_LONG_DOUBLE -#define long_double long double -#endif /* defined HAVE_LONG_DOUBLE */ -#ifndef HAVE_LONG_DOUBLE -#define long_double double -#endif /* !defined HAVE_LONG_DOUBLE */ - -double -difftime(time1, time0) -const time_t time1; -const time_t time0; -{ - time_t delta; - time_t hibit; - - if (sizeof(time_t) < sizeof(double)) - return (double) time1 - (double) time0; - if (sizeof(time_t) < sizeof(long_double)) - return (long_double) time1 - (long_double) time0; - if (time1 < time0) - return -difftime(time0, time1); - /* - ** As much as possible, avoid loss of precision - ** by computing the difference before converting to double. - */ - delta = time1 - time0; - if (delta >= 0) - return delta; - /* - ** Repair delta overflow. - */ - hibit = (~ (time_t) 0) << (TYPE_BIT(time_t) - 1); - /* - ** The following expression rounds twice, which means - ** the result may not be the closest to the true answer. - ** For example, suppose time_t is 64-bit signed int, - ** long_double is IEEE 754 double with default rounding, - ** time1 = 9223372036854775807 and time0 = -1536. - ** Then the true difference is 9223372036854777343, - ** which rounds to 9223372036854777856 - ** with a total error of 513. - ** But delta overflows to -9223372036854774273, - ** which rounds to -9223372036854774784, and correcting - ** this by subtracting 2 * (long_double) hibit - ** (i.e. by adding 2**64 = 18446744073709551616) - ** yields 9223372036854776832, which - ** rounds to 9223372036854775808 - ** with a total error of 1535 instead. - ** This problem occurs only with very large differences. - ** It's too painful to fix this portably. - ** We are not alone in this problem; - ** some C compilers round twice when converting - ** large unsigned types to small floating types, - ** so if time_t is unsigned the "return delta" above - ** has the same double-rounding problem with those compilers. - */ - return delta - 2 * (long_double) hibit; -} diff --git a/lib/libc/stdtime/localtime.c b/lib/libc/stdtime/localtime.c deleted file mode 100644 index 541f49ffdfe9..000000000000 --- a/lib/libc/stdtime/localtime.c +++ /dev/null @@ -1,1617 +0,0 @@ -/* -** This file is in the public domain, so clarified as of -** June 5, 1996 by Arthur David Olson (arthur_david_olson@nih.gov). -*/ - -#ifndef lint -#ifndef NOID -static char elsieid[] = "@(#)localtime.c 7.57"; -#endif /* !defined NOID */ -#endif /* !defined lint */ - -/* -** Leap second handling from Bradley White (bww@k.gp.cs.cmu.edu). -** POSIX-style TZ environment variable handling from Guy Harris -** (guy@auspex.com). -*/ - -/*LINTLIBRARY*/ - -#include "private.h" -#include "tzfile.h" -#include "fcntl.h" - -/* -** SunOS 4.1.1 headers lack O_BINARY. -*/ - -#ifdef O_BINARY -#define OPEN_MODE (O_RDONLY | O_BINARY) -#endif /* defined O_BINARY */ -#ifndef O_BINARY -#define OPEN_MODE O_RDONLY -#endif /* !defined O_BINARY */ - -#ifndef WILDABBR -/* -** Someone might make incorrect use of a time zone abbreviation: -** 1. They might reference tzname[0] before calling tzset (explicitly -** or implicitly). -** 2. They might reference tzname[1] before calling tzset (explicitly -** or implicitly). -** 3. They might reference tzname[1] after setting to a time zone -** in which Daylight Saving Time is never observed. -** 4. They might reference tzname[0] after setting to a time zone -** in which Standard Time is never observed. -** 5. They might reference tm.TM_ZONE after calling offtime. -** What's best to do in the above cases is open to debate; -** for now, we just set things up so that in any of the five cases -** WILDABBR is used. Another possibility: initialize tzname[0] to the -** string "tzname[0] used before set", and similarly for the other cases. -** And another: initialize tzname[0] to "ERA", with an explanation in the -** manual page of what this "time zone abbreviation" means (doing this so -** that tzname[0] has the "normal" length of three characters). -*/ -#define WILDABBR " " -#endif /* !defined WILDABBR */ - -static char wildabbr[] = "WILDABBR"; - -static const char gmt[] = "GMT"; - -struct ttinfo { /* time type information */ - long tt_gmtoff; /* GMT offset in seconds */ - int tt_isdst; /* used to set tm_isdst */ - int tt_abbrind; /* abbreviation list index */ - int tt_ttisstd; /* TRUE if transition is std time */ - int tt_ttisgmt; /* TRUE if transition is GMT */ -}; - -struct lsinfo { /* leap second information */ - time_t ls_trans; /* transition time */ - long ls_corr; /* correction to apply */ -}; - -#define BIGGEST(a, b) (((a) > (b)) ? (a) : (b)) - -#ifdef TZNAME_MAX -#define MY_TZNAME_MAX TZNAME_MAX -#endif /* defined TZNAME_MAX */ -#ifndef TZNAME_MAX -#define MY_TZNAME_MAX 255 -#endif /* !defined TZNAME_MAX */ - -struct state { - int leapcnt; - int timecnt; - int typecnt; - int charcnt; - time_t ats[TZ_MAX_TIMES]; - unsigned char types[TZ_MAX_TIMES]; - struct ttinfo ttis[TZ_MAX_TYPES]; - char chars[BIGGEST(BIGGEST(TZ_MAX_CHARS + 1, sizeof gmt), - (2 * (MY_TZNAME_MAX + 1)))]; - struct lsinfo lsis[TZ_MAX_LEAPS]; -}; - -struct rule { - int r_type; /* type of rule--see below */ - int r_day; /* day number of rule */ - int r_week; /* week number of rule */ - int r_mon; /* month number of rule */ - long r_time; /* transition time of rule */ -}; - -#define JULIAN_DAY 0 /* Jn - Julian day */ -#define DAY_OF_YEAR 1 /* n - day of year */ -#define MONTH_NTH_DAY_OF_WEEK 2 /* Mm.n.d - month, week, day of week */ - -/* -** Prototypes for static functions. -*/ - -static long detzcode P((const char * codep)); -static const char * getzname P((const char * strp)); -static const char * getnum P((const char * strp, int * nump, int min, - int max)); -static const char * getsecs P((const char * strp, long * secsp)); -static const char * getoffset P((const char * strp, long * offsetp)); -static const char * getrule P((const char * strp, struct rule * rulep)); -static void gmtload P((struct state * sp)); -static void gmtsub P((const time_t * timep, long offset, - struct tm * tmp)); -static void localsub P((const time_t * timep, long offset, - struct tm * tmp)); -static int increment_overflow P((int * number, int delta)); -static int normalize_overflow P((int * tensptr, int * unitsptr, - int base)); -static void settzname P((void)); -static time_t time1 P((struct tm * tmp, - void(*funcp) P((const time_t *, - long, struct tm *)), - long offset)); -static time_t time2 P((struct tm *tmp, - void(*funcp) P((const time_t *, - long, struct tm*)), - long offset, int * okayp)); -static void timesub P((const time_t * timep, long offset, - const struct state * sp, struct tm * tmp)); -static int tmcomp P((const struct tm * atmp, - const struct tm * btmp)); -static time_t transtime P((time_t janfirst, int year, - const struct rule * rulep, long offset)); -static int tzload P((const char * name, struct state * sp)); -static int tzparse P((const char * name, struct state * sp, - int lastditch)); - -#ifdef ALL_STATE -static struct state * lclptr; -static struct state * gmtptr; -#endif /* defined ALL_STATE */ - -#ifndef ALL_STATE -static struct state lclmem; -static struct state gmtmem; -#define lclptr (&lclmem) -#define gmtptr (&gmtmem) -#endif /* State Farm */ - -#ifndef TZ_STRLEN_MAX -#define TZ_STRLEN_MAX 255 -#endif /* !defined TZ_STRLEN_MAX */ - -static char lcl_TZname[TZ_STRLEN_MAX + 1]; -static int lcl_is_set; -static int gmt_is_set; - -char * tzname[2] = { - wildabbr, - wildabbr -}; - -/* -** Section 4.12.3 of X3.159-1989 requires that -** Except for the strftime function, these functions [asctime, -** ctime, gmtime, localtime] return values in one of two static -** objects: a broken-down time structure and an array of char. -** Thanks to Paul Eggert (eggert@twinsun.com) for noting this. -*/ - -static struct tm tm; - -#ifdef USG_COMPAT -time_t timezone = 0; -int daylight = 0; -#endif /* defined USG_COMPAT */ - -#ifdef ALTZONE -time_t altzone = 0; -#endif /* defined ALTZONE */ - -static long -detzcode(codep) -const char * const codep; -{ - register long result; - register int i; - - result = (codep[0] & 0x80) ? ~0L : 0L; - for (i = 0; i < 4; ++i) - result = (result << 8) | (codep[i] & 0xff); - return result; -} - -static void -settzname P((void)) -{ - register struct state * const sp = lclptr; - register int i; - - tzname[0] = wildabbr; - tzname[1] = wildabbr; -#ifdef USG_COMPAT - daylight = 0; - timezone = 0; -#endif /* defined USG_COMPAT */ -#ifdef ALTZONE - altzone = 0; -#endif /* defined ALTZONE */ -#ifdef ALL_STATE - if (sp == NULL) { - tzname[0] = tzname[1] = gmt; - return; - } -#endif /* defined ALL_STATE */ - for (i = 0; i < sp->typecnt; ++i) { - register const struct ttinfo * const ttisp = &sp->ttis[i]; - - tzname[ttisp->tt_isdst] = - &sp->chars[ttisp->tt_abbrind]; -#ifdef USG_COMPAT - if (ttisp->tt_isdst) - daylight = 1; - if (i == 0 || !ttisp->tt_isdst) - timezone = -(ttisp->tt_gmtoff); -#endif /* defined USG_COMPAT */ -#ifdef ALTZONE - if (i == 0 || ttisp->tt_isdst) - altzone = -(ttisp->tt_gmtoff); -#endif /* defined ALTZONE */ - } - /* - ** And to get the latest zone names into tzname. . . - */ - for (i = 0; i < sp->timecnt; ++i) { - register const struct ttinfo * const ttisp = - &sp->ttis[ - sp->types[i]]; - - tzname[ttisp->tt_isdst] = - &sp->chars[ttisp->tt_abbrind]; - } -} - -static int -tzload(name, sp) -register const char * name; -register struct state * const sp; -{ - register const char * p; - register int i; - register int fid; - - if (name == NULL && (name = TZDEFAULT) == NULL) - return -1; - { - register int doaccess; - /* - ** Section 4.9.1 of the C standard says that - ** "FILENAME_MAX expands to an integral constant expression - ** that is the sie needed for an array of char large enough - ** to hold the longest file name string that the implementation - ** guarantees can be opened." - */ - char fullname[FILENAME_MAX + 1]; - - if (name[0] == ':') - ++name; - doaccess = name[0] == '/'; - if (!doaccess) { - if ((p = TZDIR) == NULL) - return -1; - if ((strlen(p) + strlen(name) + 1) >= sizeof fullname) - return -1; - (void) strcpy(fullname, p); - (void) strcat(fullname, "/"); - (void) strcat(fullname, name); - /* - ** Set doaccess if '.' (as in "../") shows up in name. - */ - if (strchr(name, '.') != NULL) - doaccess = TRUE; - name = fullname; - } - if (doaccess && access(name, R_OK) != 0) - return -1; - if ((fid = open(name, OPEN_MODE)) == -1) - return -1; - } - { - struct tzhead * tzhp; - char buf[sizeof *sp + sizeof *tzhp]; - int ttisstdcnt; - int ttisgmtcnt; - - i = read(fid, buf, sizeof buf); - if (close(fid) != 0) - return -1; - p = buf; - p += sizeof tzhp->tzh_reserved; - ttisstdcnt = (int) detzcode(p); - p += 4; - ttisgmtcnt = (int) detzcode(p); - p += 4; - sp->leapcnt = (int) detzcode(p); - p += 4; - sp->timecnt = (int) detzcode(p); - p += 4; - sp->typecnt = (int) detzcode(p); - p += 4; - sp->charcnt = (int) detzcode(p); - p += 4; - if (sp->leapcnt < 0 || sp->leapcnt > TZ_MAX_LEAPS || - sp->typecnt <= 0 || sp->typecnt > TZ_MAX_TYPES || - sp->timecnt < 0 || sp->timecnt > TZ_MAX_TIMES || - sp->charcnt < 0 || sp->charcnt > TZ_MAX_CHARS || - (ttisstdcnt != sp->typecnt && ttisstdcnt != 0) || - (ttisgmtcnt != sp->typecnt && ttisgmtcnt != 0)) - return -1; - if (i - (p - buf) < sp->timecnt * 4 + /* ats */ - sp->timecnt + /* types */ - sp->typecnt * (4 + 2) + /* ttinfos */ - sp->charcnt + /* chars */ - sp->leapcnt * (4 + 4) + /* lsinfos */ - ttisstdcnt + /* ttisstds */ - ttisgmtcnt) /* ttisgmts */ - return -1; - for (i = 0; i < sp->timecnt; ++i) { - sp->ats[i] = detzcode(p); - p += 4; - } - for (i = 0; i < sp->timecnt; ++i) { - sp->types[i] = (unsigned char) *p++; - if (sp->types[i] >= sp->typecnt) - return -1; - } - for (i = 0; i < sp->typecnt; ++i) { - register struct ttinfo * ttisp; - - ttisp = &sp->ttis[i]; - ttisp->tt_gmtoff = detzcode(p); - p += 4; - ttisp->tt_isdst = (unsigned char) *p++; - if (ttisp->tt_isdst != 0 && ttisp->tt_isdst != 1) - return -1; - ttisp->tt_abbrind = (unsigned char) *p++; - if (ttisp->tt_abbrind < 0 || - ttisp->tt_abbrind > sp->charcnt) - return -1; - } - for (i = 0; i < sp->charcnt; ++i) - sp->chars[i] = *p++; - sp->chars[i] = '\0'; /* ensure '\0' at end */ - for (i = 0; i < sp->leapcnt; ++i) { - register struct lsinfo * lsisp; - - lsisp = &sp->lsis[i]; - lsisp->ls_trans = detzcode(p); - p += 4; - lsisp->ls_corr = detzcode(p); - p += 4; - } - for (i = 0; i < sp->typecnt; ++i) { - register struct ttinfo * ttisp; - - ttisp = &sp->ttis[i]; - if (ttisstdcnt == 0) - ttisp->tt_ttisstd = FALSE; - else { - ttisp->tt_ttisstd = *p++; - if (ttisp->tt_ttisstd != TRUE && - ttisp->tt_ttisstd != FALSE) - return -1; - } - } - for (i = 0; i < sp->typecnt; ++i) { - register struct ttinfo * ttisp; - - ttisp = &sp->ttis[i]; - if (ttisgmtcnt == 0) - ttisp->tt_ttisgmt = FALSE; - else { - ttisp->tt_ttisgmt = *p++; - if (ttisp->tt_ttisgmt != TRUE && - ttisp->tt_ttisgmt != FALSE) - return -1; - } - } - } - return 0; -} - -static const int mon_lengths[2][MONSPERYEAR] = { - { 31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31 }, - { 31, 29, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31 } -}; - -static const int year_lengths[2] = { - DAYSPERNYEAR, DAYSPERLYEAR -}; - -/* -** Given a pointer into a time zone string, scan until a character that is not -** a valid character in a zone name is found. Return a pointer to that -** character. -*/ - -static const char * -getzname(strp) -register const char * strp; -{ - register char c; - - while ((c = *strp) != '\0' && !is_digit(c) && c != ',' && c != '-' && - c != '+') - ++strp; - return strp; -} - -/* -** Given a pointer into a time zone string, extract a number from that string. -** Check that the number is within a specified range; if it is not, return -** NULL. -** Otherwise, return a pointer to the first character not part of the number. -*/ - -static const char * -getnum(strp, nump, min, max) -register const char * strp; -int * const nump; -const int min; -const int max; -{ - register char c; - register int num; - - if (strp == NULL || !is_digit(c = *strp)) - return NULL; - num = 0; - do { - num = num * 10 + (c - '0'); - if (num > max) - return NULL; /* illegal value */ - c = *++strp; - } while (is_digit(c)); - if (num < min) - return NULL; /* illegal value */ - *nump = num; - return strp; -} - -/* -** Given a pointer into a time zone string, extract a number of seconds, -** in hh[:mm[:ss]] form, from the string. -** If any error occurs, return NULL. -** Otherwise, return a pointer to the first character not part of the number -** of seconds. -*/ - -static const char * -getsecs(strp, secsp) -register const char * strp; -long * const secsp; -{ - int num; - - /* - ** `HOURSPERDAY * DAYSPERWEEK - 1' allows quasi-Posix rules like - ** "M10.4.6/26", which does not conform to Posix, - ** but which specifies the equivalent of - ** ``02:00 on the first Sunday on or after 23 Oct''. - */ - strp = getnum(strp, &num, 0, HOURSPERDAY * DAYSPERWEEK - 1); - if (strp == NULL) - return NULL; - *secsp = num * (long) SECSPERHOUR; - if (*strp == ':') { - ++strp; - strp = getnum(strp, &num, 0, MINSPERHOUR - 1); - if (strp == NULL) - return NULL; - *secsp += num * SECSPERMIN; - if (*strp == ':') { - ++strp; - /* `SECSPERMIN' allows for leap seconds. */ - strp = getnum(strp, &num, 0, SECSPERMIN); - if (strp == NULL) - return NULL; - *secsp += num; - } - } - return strp; -} - -/* -** Given a pointer into a time zone string, extract an offset, in -** [+-]hh[:mm[:ss]] form, from the string. -** If any error occurs, return NULL. -** Otherwise, return a pointer to the first character not part of the time. -*/ - -static const char * -getoffset(strp, offsetp) -register const char * strp; -long * const offsetp; -{ - register int neg = 0; - - if (*strp == '-') { - neg = 1; - ++strp; - } else if (*strp == '+') - ++strp; - strp = getsecs(strp, offsetp); - if (strp == NULL) - return NULL; /* illegal time */ - if (neg) - *offsetp = -*offsetp; - return strp; -} - -/* -** Given a pointer into a time zone string, extract a rule in the form -** date[/time]. See POSIX section 8 for the format of "date" and "time". -** If a valid rule is not found, return NULL. -** Otherwise, return a pointer to the first character not part of the rule. -*/ - -static const char * -getrule(strp, rulep) -const char * strp; -register struct rule * const rulep; -{ - if (*strp == 'J') { - /* - ** Julian day. - */ - rulep->r_type = JULIAN_DAY; - ++strp; - strp = getnum(strp, &rulep->r_day, 1, DAYSPERNYEAR); - } else if (*strp == 'M') { - /* - ** Month, week, day. - */ - rulep->r_type = MONTH_NTH_DAY_OF_WEEK; - ++strp; - strp = getnum(strp, &rulep->r_mon, 1, MONSPERYEAR); - if (strp == NULL) - return NULL; - if (*strp++ != '.') - return NULL; - strp = getnum(strp, &rulep->r_week, 1, 5); - if (strp == NULL) - return NULL; - if (*strp++ != '.') - return NULL; - strp = getnum(strp, &rulep->r_day, 0, DAYSPERWEEK - 1); - } else if (is_digit(*strp)) { - /* - ** Day of year. - */ - rulep->r_type = DAY_OF_YEAR; - strp = getnum(strp, &rulep->r_day, 0, DAYSPERLYEAR - 1); - } else return NULL; /* invalid format */ - if (strp == NULL) - return NULL; - if (*strp == '/') { - /* - ** Time specified. - */ - ++strp; - strp = getsecs(strp, &rulep->r_time); - } else rulep->r_time = 2 * SECSPERHOUR; /* default = 2:00:00 */ - return strp; -} - -/* -** Given the Epoch-relative time of January 1, 00:00:00 GMT, in a year, the -** year, a rule, and the offset from GMT at the time that rule takes effect, -** calculate the Epoch-relative time that rule takes effect. -*/ - -static time_t -transtime(janfirst, year, rulep, offset) -const time_t janfirst; -const int year; -register const struct rule * const rulep; -const long offset; -{ - register int leapyear; - register time_t value; - register int i; - int d, m1, yy0, yy1, yy2, dow; - - INITIALIZE(value); - leapyear = isleap(year); - switch (rulep->r_type) { - - case JULIAN_DAY: - /* - ** Jn - Julian day, 1 == January 1, 60 == March 1 even in leap - ** years. - ** In non-leap years, or if the day number is 59 or less, just - ** add SECSPERDAY times the day number-1 to the time of - ** January 1, midnight, to get the day. - */ - value = janfirst + (rulep->r_day - 1) * SECSPERDAY; - if (leapyear && rulep->r_day >= 60) - value += SECSPERDAY; - break; - - case DAY_OF_YEAR: - /* - ** n - day of year. - ** Just add SECSPERDAY times the day number to the time of - ** January 1, midnight, to get the day. - */ - value = janfirst + rulep->r_day * SECSPERDAY; - break; - - case MONTH_NTH_DAY_OF_WEEK: - /* - ** Mm.n.d - nth "dth day" of month m. - */ - value = janfirst; - for (i = 0; i < rulep->r_mon - 1; ++i) - value += mon_lengths[leapyear][i] * SECSPERDAY; - - /* - ** Use Zeller's Congruence to get day-of-week of first day of - ** month. - */ - m1 = (rulep->r_mon + 9) % 12 + 1; - yy0 = (rulep->r_mon <= 2) ? (year - 1) : year; - yy1 = yy0 / 100; - yy2 = yy0 % 100; - dow = ((26 * m1 - 2) / 10 + - 1 + yy2 + yy2 / 4 + yy1 / 4 - 2 * yy1) % 7; - if (dow < 0) - dow += DAYSPERWEEK; - - /* - ** "dow" is the day-of-week of the first day of the month. Get - ** the day-of-month (zero-origin) of the first "dow" day of the - ** month. - */ - d = rulep->r_day - dow; - if (d < 0) - d += DAYSPERWEEK; - for (i = 1; i < rulep->r_week; ++i) { - if (d + DAYSPERWEEK >= - mon_lengths[leapyear][rulep->r_mon - 1]) - break; - d += DAYSPERWEEK; - } - - /* - ** "d" is the day-of-month (zero-origin) of the day we want. - */ - value += d * SECSPERDAY; - break; - } - - /* - ** "value" is the Epoch-relative time of 00:00:00 GMT on the day in - ** question. To get the Epoch-relative time of the specified local - ** time on that day, add the transition time and the current offset - ** from GMT. - */ - return value + rulep->r_time + offset; -} - -/* -** Given a POSIX section 8-style TZ string, fill in the rule tables as -** appropriate. -*/ - -static int -tzparse(name, sp, lastditch) -const char * name; -register struct state * const sp; -const int lastditch; -{ - const char * stdname; - const char * dstname; - size_t stdlen; - size_t dstlen; - long stdoffset; - long dstoffset; - register time_t * atp; - register unsigned char * typep; - register char * cp; - register int load_result; - - INITIALIZE(dstname); - stdname = name; - if (lastditch) { - stdlen = strlen(name); /* length of standard zone name */ - name += stdlen; - if (stdlen >= sizeof sp->chars) - stdlen = (sizeof sp->chars) - 1; - } else { - name = getzname(name); - stdlen = name - stdname; - if (stdlen < 3) - return -1; - } - if (*name == '\0') - return -1; /* was "stdoffset = 0;" */ - else { - name = getoffset(name, &stdoffset); - if (name == NULL) - return -1; - } - load_result = tzload(TZDEFRULES, sp); - if (load_result != 0) - sp->leapcnt = 0; /* so, we're off a little */ - if (*name != '\0') { - dstname = name; - name = getzname(name); - dstlen = name - dstname; /* length of DST zone name */ - if (dstlen < 3) - return -1; - if (*name != '\0' && *name != ',' && *name != ';') { - name = getoffset(name, &dstoffset); - if (name == NULL) - return -1; - } else dstoffset = stdoffset - SECSPERHOUR; - if (*name == ',' || *name == ';') { - struct rule start; - struct rule end; - register int year; - register time_t janfirst; - time_t starttime; - time_t endtime; - - ++name; - if ((name = getrule(name, &start)) == NULL) - return -1; - if (*name++ != ',') - return -1; - if ((name = getrule(name, &end)) == NULL) - return -1; - if (*name != '\0') - return -1; - sp->typecnt = 2; /* standard time and DST */ - /* - ** Two transitions per year, from EPOCH_YEAR to 2037. - */ - sp->timecnt = 2 * (2037 - EPOCH_YEAR + 1); - if (sp->timecnt > TZ_MAX_TIMES) - return -1; - sp->ttis[0].tt_gmtoff = -dstoffset; - sp->ttis[0].tt_isdst = 1; - sp->ttis[0].tt_abbrind = stdlen + 1; - sp->ttis[1].tt_gmtoff = -stdoffset; - sp->ttis[1].tt_isdst = 0; - sp->ttis[1].tt_abbrind = 0; - atp = sp->ats; - typep = sp->types; - janfirst = 0; - for (year = EPOCH_YEAR; year <= 2037; ++year) { - starttime = transtime(janfirst, year, &start, - stdoffset); - endtime = transtime(janfirst, year, &end, - dstoffset); - if (starttime > endtime) { - *atp++ = endtime; - *typep++ = 1; /* DST ends */ - *atp++ = starttime; - *typep++ = 0; /* DST begins */ - } else { - *atp++ = starttime; - *typep++ = 0; /* DST begins */ - *atp++ = endtime; - *typep++ = 1; /* DST ends */ - } - janfirst += year_lengths[isleap(year)] * - SECSPERDAY; - } - } else { - register long theirstdoffset; - register long theirdstoffset; - register long theiroffset; - register int isdst; - register int i; - register int j; - - if (*name != '\0') - return -1; - if (load_result != 0) - return -1; - /* - ** Initial values of theirstdoffset and theirdstoffset. - */ - theirstdoffset = 0; - for (i = 0; i < sp->timecnt; ++i) { - j = sp->types[i]; - if (!sp->ttis[j].tt_isdst) { - theirstdoffset = - -sp->ttis[j].tt_gmtoff; - break; - } - } - theirdstoffset = 0; - for (i = 0; i < sp->timecnt; ++i) { - j = sp->types[i]; - if (sp->ttis[j].tt_isdst) { - theirdstoffset = - -sp->ttis[j].tt_gmtoff; - break; - } - } - /* - ** Initially we're assumed to be in standard time. - */ - isdst = FALSE; - theiroffset = theirstdoffset; - /* - ** Now juggle transition times and types - ** tracking offsets as you do. - */ - for (i = 0; i < sp->timecnt; ++i) { - j = sp->types[i]; - sp->types[i] = sp->ttis[j].tt_isdst; - if (sp->ttis[j].tt_ttisgmt) { - /* No adjustment to transition time */ - } else { - /* - ** If summer time is in effect, and the - ** transition time was not specified as - ** standard time, add the summer time - ** offset to the transition time; - ** otherwise, add the standard time - ** offset to the transition time. - */ - /* - ** Transitions from DST to DDST - ** will effectively disappear since - ** POSIX provides for only one DST - ** offset. - */ - if (isdst && !sp->ttis[j].tt_ttisstd) { - sp->ats[i] += dstoffset - - theirdstoffset; - } else { - sp->ats[i] += stdoffset - - theirstdoffset; - } - } - theiroffset = -sp->ttis[j].tt_gmtoff; - if (sp->ttis[j].tt_isdst) - theirdstoffset = theiroffset; - else theirstdoffset = theiroffset; - } - /* - ** Finally, fill in ttis. - ** ttisstd and ttisgmt need not be handled. - */ - sp->ttis[0].tt_gmtoff = -stdoffset; - sp->ttis[0].tt_isdst = FALSE; - sp->ttis[0].tt_abbrind = 0; - sp->ttis[1].tt_gmtoff = -dstoffset; - sp->ttis[1].tt_isdst = TRUE; - sp->ttis[1].tt_abbrind = stdlen + 1; - } - } else { - dstlen = 0; - sp->typecnt = 1; /* only standard time */ - sp->timecnt = 0; - sp->ttis[0].tt_gmtoff = -stdoffset; - sp->ttis[0].tt_isdst = 0; - sp->ttis[0].tt_abbrind = 0; - } - sp->charcnt = stdlen + 1; - if (dstlen != 0) - sp->charcnt += dstlen + 1; - if (sp->charcnt > sizeof sp->chars) - return -1; - cp = sp->chars; - (void) strncpy(cp, stdname, stdlen); - cp += stdlen; - *cp++ = '\0'; - if (dstlen != 0) { - (void) strncpy(cp, dstname, dstlen); - *(cp + dstlen) = '\0'; - } - return 0; -} - -static void -gmtload(sp) -struct state * const sp; -{ - if (tzload(gmt, sp) != 0) - (void) tzparse(gmt, sp, TRUE); -} - -#ifndef STD_INSPIRED -/* -** A non-static declaration of tzsetwall in a system header file -** may cause a warning about this upcoming static declaration... -*/ -static -#endif /* !defined STD_INSPIRED */ -void -tzsetwall P((void)) -{ - if (lcl_is_set < 0) - return; - lcl_is_set = -1; - -#ifdef ALL_STATE - if (lclptr == NULL) { - lclptr = (struct state *) malloc(sizeof *lclptr); - if (lclptr == NULL) { - settzname(); /* all we can do */ - return; - } - } -#endif /* defined ALL_STATE */ - if (tzload((char *) NULL, lclptr) != 0) - gmtload(lclptr); - settzname(); -} - -void -tzset P((void)) -{ - register const char * name; - - name = getenv("TZ"); - if (name == NULL) { - tzsetwall(); - return; - } - - if (lcl_is_set > 0 && strcmp(lcl_TZname, name) == 0) - return; - lcl_is_set = (strlen(name) < sizeof(lcl_TZname)); - if (lcl_is_set) - (void) strcpy(lcl_TZname, name); - -#ifdef ALL_STATE - if (lclptr == NULL) { - lclptr = (struct state *) malloc(sizeof *lclptr); - if (lclptr == NULL) { - settzname(); /* all we can do */ - return; - } - } -#endif /* defined ALL_STATE */ - if (*name == '\0') { - /* - ** User wants it fast rather than right. - */ - lclptr->leapcnt = 0; /* so, we're off a little */ - lclptr->timecnt = 0; - lclptr->ttis[0].tt_gmtoff = 0; - lclptr->ttis[0].tt_abbrind = 0; - (void) strcpy(lclptr->chars, gmt); - } else if (tzload(name, lclptr) != 0) - if (name[0] == ':' || tzparse(name, lclptr, FALSE) != 0) - (void) gmtload(lclptr); - settzname(); -} - -/* -** The easy way to behave "as if no library function calls" localtime -** is to not call it--so we drop its guts into "localsub", which can be -** freely called. (And no, the PANS doesn't require the above behavior-- -** but it *is* desirable.) -** -** The unused offset argument is for the benefit of mktime variants. -*/ - -/*ARGSUSED*/ -static void -localsub(timep, offset, tmp) -const time_t * const timep; -const long offset; -struct tm * const tmp; -{ - register struct state * sp; - register const struct ttinfo * ttisp; - register int i; - const time_t t = *timep; - - sp = lclptr; -#ifdef ALL_STATE - if (sp == NULL) { - gmtsub(timep, offset, tmp); - return; - } -#endif /* defined ALL_STATE */ - if (sp->timecnt == 0 || t < sp->ats[0]) { - i = 0; - while (sp->ttis[i].tt_isdst) - if (++i >= sp->typecnt) { - i = 0; - break; - } - } else { - for (i = 1; i < sp->timecnt; ++i) - if (t < sp->ats[i]) - break; - i = sp->types[i - 1]; - } - ttisp = &sp->ttis[i]; - /* - ** To get (wrong) behavior that's compatible with System V Release 2.0 - ** you'd replace the statement below with - ** t += ttisp->tt_gmtoff; - ** timesub(&t, 0L, sp, tmp); - */ - timesub(&t, ttisp->tt_gmtoff, sp, tmp); - tmp->tm_isdst = ttisp->tt_isdst; - tzname[tmp->tm_isdst] = &sp->chars[ttisp->tt_abbrind]; -#ifdef TM_ZONE - tmp->TM_ZONE = &sp->chars[ttisp->tt_abbrind]; -#endif /* defined TM_ZONE */ -} - -struct tm * -localtime(timep) -const time_t * const timep; -{ - tzset(); - localsub(timep, 0L, &tm); - return &tm; -} - -/* -** gmtsub is to gmtime as localsub is to localtime. -*/ - -static void -gmtsub(timep, offset, tmp) -const time_t * const timep; -const long offset; -struct tm * const tmp; -{ - if (!gmt_is_set) { - gmt_is_set = TRUE; -#ifdef ALL_STATE - gmtptr = (struct state *) malloc(sizeof *gmtptr); - if (gmtptr != NULL) -#endif /* defined ALL_STATE */ - gmtload(gmtptr); - } - timesub(timep, offset, gmtptr, tmp); -#ifdef TM_ZONE - /* - ** Could get fancy here and deliver something such as - ** "GMT+xxxx" or "GMT-xxxx" if offset is non-zero, - ** but this is no time for a treasure hunt. - */ - if (offset != 0) - tmp->TM_ZONE = wildabbr; - else { -#ifdef ALL_STATE - if (gmtptr == NULL) - tmp->TM_ZONE = gmt; - else tmp->TM_ZONE = gmtptr->chars; -#endif /* defined ALL_STATE */ -#ifndef ALL_STATE - tmp->TM_ZONE = gmtptr->chars; -#endif /* State Farm */ - } -#endif /* defined TM_ZONE */ -} - -struct tm * -gmtime(timep) -const time_t * const timep; -{ - gmtsub(timep, 0L, &tm); - return &tm; -} - -#ifdef STD_INSPIRED - -struct tm * -offtime(timep, offset) -const time_t * const timep; -const long offset; -{ - gmtsub(timep, offset, &tm); - return &tm; -} - -#endif /* defined STD_INSPIRED */ - -static void -timesub(timep, offset, sp, tmp) -const time_t * const timep; -const long offset; -register const struct state * const sp; -register struct tm * const tmp; -{ - register const struct lsinfo * lp; - register long days; - register long rem; - register int y; - register int yleap; - register const int * ip; - register long corr; - register int hit; - register int i; - - corr = 0; - hit = 0; -#ifdef ALL_STATE - i = (sp == NULL) ? 0 : sp->leapcnt; -#endif /* defined ALL_STATE */ -#ifndef ALL_STATE - i = sp->leapcnt; -#endif /* State Farm */ - while (--i >= 0) { - lp = &sp->lsis[i]; - if (*timep >= lp->ls_trans) { - if (*timep == lp->ls_trans) { - hit = ((i == 0 && lp->ls_corr > 0) || - lp->ls_corr > sp->lsis[i - 1].ls_corr); - if (hit) - while (i > 0 && - sp->lsis[i].ls_trans == - sp->lsis[i - 1].ls_trans + 1 && - sp->lsis[i].ls_corr == - sp->lsis[i - 1].ls_corr + 1) { - ++hit; - --i; - } - } - corr = lp->ls_corr; - break; - } - } - days = *timep / SECSPERDAY; - rem = *timep % SECSPERDAY; -#ifdef mc68k - if (*timep == 0x80000000) { - /* - ** A 3B1 muffs the division on the most negative number. - */ - days = -24855; - rem = -11648; - } -#endif /* defined mc68k */ - rem += (offset - corr); - while (rem < 0) { - rem += SECSPERDAY; - --days; - } - while (rem >= SECSPERDAY) { - rem -= SECSPERDAY; - ++days; - } - tmp->tm_hour = (int) (rem / SECSPERHOUR); - rem = rem % SECSPERHOUR; - tmp->tm_min = (int) (rem / SECSPERMIN); - /* - ** A positive leap second requires a special - ** representation. This uses "... ??:59:60" et seq. - */ - tmp->tm_sec = (int) (rem % SECSPERMIN) + hit; - tmp->tm_wday = (int) ((EPOCH_WDAY + days) % DAYSPERWEEK); - if (tmp->tm_wday < 0) - tmp->tm_wday += DAYSPERWEEK; - y = EPOCH_YEAR; -#define LEAPS_THRU_END_OF(y) ((y) / 4 - (y) / 100 + (y) / 400) - while (days < 0 || days >= (long) year_lengths[yleap = isleap(y)]) { - register int newy; - - newy = y + days / DAYSPERNYEAR; - if (days < 0) - --newy; - days -= (newy - y) * DAYSPERNYEAR + - LEAPS_THRU_END_OF(newy - 1) - - LEAPS_THRU_END_OF(y - 1); - y = newy; - } - tmp->tm_year = y - TM_YEAR_BASE; - tmp->tm_yday = (int) days; - ip = mon_lengths[yleap]; - for (tmp->tm_mon = 0; days >= (long) ip[tmp->tm_mon]; ++(tmp->tm_mon)) - days = days - (long) ip[tmp->tm_mon]; - tmp->tm_mday = (int) (days + 1); - tmp->tm_isdst = 0; -#ifdef TM_GMTOFF - tmp->TM_GMTOFF = offset; -#endif /* defined TM_GMTOFF */ -} - -char * -ctime(timep) -const time_t * const timep; -{ -/* -** Section 4.12.3.2 of X3.159-1989 requires that -** The ctime funciton converts the calendar time pointed to by timer -** to local time in the form of a string. It is equivalent to -** asctime(localtime(timer)) -*/ - return asctime(localtime(timep)); -} - -/* -** Adapted from code provided by Robert Elz, who writes: -** The "best" way to do mktime I think is based on an idea of Bob -** Kridle's (so its said...) from a long time ago. -** [kridle@xinet.com as of 1996-01-16.] -** It does a binary search of the time_t space. Since time_t's are -** just 32 bits, its a max of 32 iterations (even at 64 bits it -** would still be very reasonable). -*/ - -#ifndef WRONG -#define WRONG (-1) -#endif /* !defined WRONG */ - -/* -** Simplified normalize logic courtesy Paul Eggert (eggert@twinsun.com). -*/ - -static int -increment_overflow(number, delta) -int * number; -int delta; -{ - int number0; - - number0 = *number; - *number += delta; - return (*number < number0) != (delta < 0); -} - -static int -normalize_overflow(tensptr, unitsptr, base) -int * const tensptr; -int * const unitsptr; -const int base; -{ - register int tensdelta; - - tensdelta = (*unitsptr >= 0) ? - (*unitsptr / base) : - (-1 - (-1 - *unitsptr) / base); - *unitsptr -= tensdelta * base; - return increment_overflow(tensptr, tensdelta); -} - -static int -tmcomp(atmp, btmp) -register const struct tm * const atmp; -register const struct tm * const btmp; -{ - register int result; - - if ((result = (atmp->tm_year - btmp->tm_year)) == 0 && - (result = (atmp->tm_mon - btmp->tm_mon)) == 0 && - (result = (atmp->tm_mday - btmp->tm_mday)) == 0 && - (result = (atmp->tm_hour - btmp->tm_hour)) == 0 && - (result = (atmp->tm_min - btmp->tm_min)) == 0) - result = atmp->tm_sec - btmp->tm_sec; - return result; -} - -static time_t -time2(tmp, funcp, offset, okayp) -struct tm * const tmp; -void (* const funcp) P((const time_t*, long, struct tm*)); -const long offset; -int * const okayp; -{ - register const struct state * sp; - register int dir; - register int bits; - register int i, j ; - register int saved_seconds; - time_t newt; - time_t t; - struct tm yourtm, mytm; - - *okayp = FALSE; - yourtm = *tmp; - if (normalize_overflow(&yourtm.tm_hour, &yourtm.tm_min, MINSPERHOUR)) - return WRONG; - if (normalize_overflow(&yourtm.tm_mday, &yourtm.tm_hour, HOURSPERDAY)) - return WRONG; - if (normalize_overflow(&yourtm.tm_year, &yourtm.tm_mon, MONSPERYEAR)) - return WRONG; - /* - ** Turn yourtm.tm_year into an actual year number for now. - ** It is converted back to an offset from TM_YEAR_BASE later. - */ - if (increment_overflow(&yourtm.tm_year, TM_YEAR_BASE)) - return WRONG; - while (yourtm.tm_mday <= 0) { - if (increment_overflow(&yourtm.tm_year, -1)) - return WRONG; - i = yourtm.tm_year + (1 < yourtm.tm_mon); - yourtm.tm_mday += year_lengths[isleap(i)]; - } - while (yourtm.tm_mday > DAYSPERLYEAR) { - i = yourtm.tm_year + (1 < yourtm.tm_mon); - yourtm.tm_mday -= year_lengths[isleap(i)]; - if (increment_overflow(&yourtm.tm_year, 1)) - return WRONG; - } - for ( ; ; ) { - i = mon_lengths[isleap(yourtm.tm_year)][yourtm.tm_mon]; - if (yourtm.tm_mday <= i) - break; - yourtm.tm_mday -= i; - if (++yourtm.tm_mon >= MONSPERYEAR) { - yourtm.tm_mon = 0; - if (increment_overflow(&yourtm.tm_year, 1)) - return WRONG; - } - } - if (increment_overflow(&yourtm.tm_year, -TM_YEAR_BASE)) - return WRONG; - if (yourtm.tm_year + TM_YEAR_BASE < EPOCH_YEAR) { - /* - ** We can't set tm_sec to 0, because that might push the - ** time below the minimum representable time. - ** Set tm_sec to 59 instead. - ** This assumes that the minimum representable time is - ** not in the same minute that a leap second was deleted from, - ** which is a safer assumption than using 58 would be. - */ - if (increment_overflow(&yourtm.tm_sec, 1 - SECSPERMIN)) - return WRONG; - saved_seconds = yourtm.tm_sec; - yourtm.tm_sec = SECSPERMIN - 1; - } else { - saved_seconds = yourtm.tm_sec; - yourtm.tm_sec = 0; - } - /* - ** Divide the search space in half - ** (this works whether time_t is signed or unsigned). - */ - bits = TYPE_BIT(time_t) - 1; - /* - ** If time_t is signed, then 0 is just above the median, - ** assuming two's complement arithmetic. - ** If time_t is unsigned, then (1 << bits) is just above the median. - */ - t = TYPE_SIGNED(time_t) ? 0 : (((time_t) 1) << bits); - for ( ; ; ) { - (*funcp)(&t, offset, &mytm); - dir = tmcomp(&mytm, &yourtm); - if (dir != 0) { - if (bits-- < 0) - return WRONG; - if (bits < 0) - --t; /* may be needed if new t is minimal */ - else if (dir > 0) - t -= ((time_t) 1) << bits; - else t += ((time_t) 1) << bits; - continue; - } - if (yourtm.tm_isdst < 0 || mytm.tm_isdst == yourtm.tm_isdst) - break; - /* - ** Right time, wrong type. - ** Hunt for right time, right type. - ** It's okay to guess wrong since the guess - ** gets checked. - */ - /* - ** The (void *) casts are the benefit of SunOS 3.3 on Sun 2's. - */ - sp = (const struct state *) - (((void *) funcp == (void *) localsub) ? - lclptr : gmtptr); -#ifdef ALL_STATE - if (sp == NULL) - return WRONG; -#endif /* defined ALL_STATE */ - for (i = sp->typecnt - 1; i >= 0; --i) { - if (sp->ttis[i].tt_isdst != yourtm.tm_isdst) - continue; - for (j = sp->typecnt - 1; j >= 0; --j) { - if (sp->ttis[j].tt_isdst == yourtm.tm_isdst) - continue; - newt = t + sp->ttis[j].tt_gmtoff - - sp->ttis[i].tt_gmtoff; - (*funcp)(&newt, offset, &mytm); - if (tmcomp(&mytm, &yourtm) != 0) - continue; - if (mytm.tm_isdst != yourtm.tm_isdst) - continue; - /* - ** We have a match. - */ - t = newt; - goto label; - } - } - return WRONG; - } -label: - newt = t + saved_seconds; - if ((newt < t) != (saved_seconds < 0)) - return WRONG; - t = newt; - (*funcp)(&t, offset, tmp); - *okayp = TRUE; - return t; -} - -static time_t -time1(tmp, funcp, offset) -struct tm * const tmp; -void (* const funcp) P((const time_t *, long, struct tm *)); -const long offset; -{ - register time_t t; - register const struct state * sp; - register int samei, otheri; - int okay; - - if (tmp->tm_isdst > 1) - tmp->tm_isdst = 1; - t = time2(tmp, funcp, offset, &okay); -#ifdef PCTS - /* - ** PCTS code courtesy Grant Sullivan (grant@osf.org). - */ - if (okay) - return t; - if (tmp->tm_isdst < 0) - tmp->tm_isdst = 0; /* reset to std and try again */ -#endif /* defined PCTS */ -#ifndef PCTS - if (okay || tmp->tm_isdst < 0) - return t; -#endif /* !defined PCTS */ - /* - ** We're supposed to assume that somebody took a time of one type - ** and did some math on it that yielded a "struct tm" that's bad. - ** We try to divine the type they started from and adjust to the - ** type they need. - */ - /* - ** The (void *) casts are the benefit of SunOS 3.3 on Sun 2's. - */ - sp = (const struct state *) (((void *) funcp == (void *) localsub) ? - lclptr : gmtptr); -#ifdef ALL_STATE - if (sp == NULL) - return WRONG; -#endif /* defined ALL_STATE */ - for (samei = sp->typecnt - 1; samei >= 0; --samei) { - if (sp->ttis[samei].tt_isdst != tmp->tm_isdst) - continue; - for (otheri = sp->typecnt - 1; otheri >= 0; --otheri) { - if (sp->ttis[otheri].tt_isdst == tmp->tm_isdst) - continue; - tmp->tm_sec += sp->ttis[otheri].tt_gmtoff - - sp->ttis[samei].tt_gmtoff; - tmp->tm_isdst = !tmp->tm_isdst; - t = time2(tmp, funcp, offset, &okay); - if (okay) - return t; - tmp->tm_sec -= sp->ttis[otheri].tt_gmtoff - - sp->ttis[samei].tt_gmtoff; - tmp->tm_isdst = !tmp->tm_isdst; - } - } - return WRONG; -} - -time_t -mktime(tmp) -struct tm * const tmp; -{ - tzset(); - return time1(tmp, localsub, 0L); -} - -#ifdef STD_INSPIRED - -time_t -timelocal(tmp) -struct tm * const tmp; -{ - tmp->tm_isdst = -1; /* in case it wasn't initialized */ - return mktime(tmp); -} - -time_t -timegm(tmp) -struct tm * const tmp; -{ - tmp->tm_isdst = 0; - return time1(tmp, gmtsub, 0L); -} - -time_t -timeoff(tmp, offset) -struct tm * const tmp; -const long offset; -{ - tmp->tm_isdst = 0; - return time1(tmp, gmtsub, offset); -} - -#endif /* defined STD_INSPIRED */ - -#ifdef CMUCS - -/* -** The following is supplied for compatibility with -** previous versions of the CMUCS runtime library. -*/ - -long -gtime(tmp) -struct tm * const tmp; -{ - const time_t t = mktime(tmp); - - if (t == WRONG) - return -1; - return t; -} - -#endif /* defined CMUCS */ - -/* -** XXX--is the below the right way to conditionalize?? -*/ - -#ifdef STD_INSPIRED - -/* -** IEEE Std 1003.1-1988 (POSIX) legislates that 536457599 -** shall correspond to "Wed Dec 31 23:59:59 GMT 1986", which -** is not the case if we are accounting for leap seconds. -** So, we provide the following conversion routines for use -** when exchanging timestamps with POSIX conforming systems. -*/ - -static long -leapcorr(timep) -time_t * timep; -{ - register struct state * sp; - register struct lsinfo * lp; - register int i; - - sp = lclptr; - i = sp->leapcnt; - while (--i >= 0) { - lp = &sp->lsis[i]; - if (*timep >= lp->ls_trans) - return lp->ls_corr; - } - return 0; -} - -time_t -time2posix(t) -time_t t; -{ - tzset(); - return t - leapcorr(&t); -} - -time_t -posix2time(t) -time_t t; -{ - time_t x; - time_t y; - - tzset(); - /* - ** For a positive leap second hit, the result - ** is not unique. For a negative leap second - ** hit, the corresponding time doesn't exist, - ** so we return an adjacent second. - */ - x = t + leapcorr(&t); - y = x - leapcorr(&x); - if (y < t) { - do { - x++; - y = x - leapcorr(&x); - } while (y < t); - if (t != y) - return x - 1; - } else if (y > t) { - do { - --x; - y = x - leapcorr(&x); - } while (y > t); - if (t != y) - return x + 1; - } - return x; -} - -#endif /* defined STD_INSPIRED */ diff --git a/lib/libc/stdtime/private.h b/lib/libc/stdtime/private.h deleted file mode 100644 index f81bf4867bdb..000000000000 --- a/lib/libc/stdtime/private.h +++ /dev/null @@ -1,252 +0,0 @@ -#ifndef PRIVATE_H - -#define PRIVATE_H - -/* -** This file is in the public domain, so clarified as of -** June 5, 1996 by Arthur David Olson (arthur_david_olson@nih.gov). -*/ - -/* -** 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! -*/ - -/* -** ID -*/ - -#ifndef lint -#ifndef NOID -static char privatehid[] = "@(#)private.h 7.43"; -#endif /* !defined NOID */ -#endif /* !defined lint */ - -/* -** Defaults for preprocessor symbols. -** You can override these in your C compiler options, e.g. `-DHAVE_ADJTIME=0'. -*/ - -#ifndef HAVE_ADJTIME -#define HAVE_ADJTIME 1 -#endif /* !defined HAVE_ADJTIME */ - -#ifndef HAVE_GETTEXT -#define HAVE_GETTEXT 0 -#endif /* !defined HAVE_GETTEXT */ - -#ifndef HAVE_SETTIMEOFDAY -#define HAVE_SETTIMEOFDAY 3 -#endif /* !defined HAVE_SETTIMEOFDAY */ - -#ifndef HAVE_STRERROR -#define HAVE_STRERROR 0 -#endif /* !defined HAVE_STRERROR */ - -#ifndef HAVE_UNISTD_H -#define HAVE_UNISTD_H 1 -#endif /* !defined HAVE_UNISTD_H */ - -#ifndef HAVE_UTMPX_H -#define HAVE_UTMPX_H 0 -#endif /* !defined HAVE_UTMPX_H */ - -#ifndef LOCALE_HOME -#define LOCALE_HOME "/usr/lib/locale" -#endif /* !defined LOCALE_HOME */ - -/* -** Nested includes -*/ - -#include "sys/types.h" /* for time_t */ -#include "stdio.h" -#include "errno.h" -#include "string.h" -#include "limits.h" /* for CHAR_BIT */ -#include "time.h" -#include "stdlib.h" - -#if HAVE_GETTEXT - 0 -#include "libintl.h" -#endif /* HAVE_GETTEXT - 0 */ - -#if HAVE_UNISTD_H - 0 -#include "unistd.h" /* for F_OK and R_OK */ -#endif /* HAVE_UNISTD_H - 0 */ - -#if !(HAVE_UNISTD_H - 0) -#ifndef F_OK -#define F_OK 0 -#endif /* !defined F_OK */ -#ifndef R_OK -#define R_OK 4 -#endif /* !defined R_OK */ -#endif /* !(HAVE_UNISTD_H - 0) */ - -/* Unlike <ctype.h>'s isdigit, this also works if c < 0 | c > UCHAR_MAX. */ -#define is_digit(c) ((unsigned)(c) - '0' <= 9) - -/* -** Workarounds for compilers/systems. -*/ - -/* -** SunOS 4.1.1 cc lacks const. -*/ - -#ifndef const -#ifndef __STDC__ -#define const -#endif /* !defined __STDC__ */ -#endif /* !defined const */ - -/* -** SunOS 4.1.1 cc lacks prototypes. -*/ - -#ifndef P -#ifdef __STDC__ -#define P(x) x -#endif /* defined __STDC__ */ -#ifndef __STDC__ -#define P(x) () -#endif /* !defined __STDC__ */ -#endif /* !defined P */ - -/* -** SunOS 4.1.1 headers lack EXIT_SUCCESS. -*/ - -#ifndef EXIT_SUCCESS -#define EXIT_SUCCESS 0 -#endif /* !defined EXIT_SUCCESS */ - -/* -** SunOS 4.1.1 headers lack EXIT_FAILURE. -*/ - -#ifndef EXIT_FAILURE -#define EXIT_FAILURE 1 -#endif /* !defined EXIT_FAILURE */ - -/* -** SunOS 4.1.1 headers lack FILENAME_MAX. -*/ - -#ifndef FILENAME_MAX - -#ifndef MAXPATHLEN -#ifdef unix -#include "sys/param.h" -#endif /* defined unix */ -#endif /* !defined MAXPATHLEN */ - -#ifdef MAXPATHLEN -#define FILENAME_MAX MAXPATHLEN -#endif /* defined MAXPATHLEN */ -#ifndef MAXPATHLEN -#define FILENAME_MAX 1024 /* Pure guesswork */ -#endif /* !defined MAXPATHLEN */ - -#endif /* !defined FILENAME_MAX */ - -/* -** SunOS 4.1.1 libraries lack remove. -*/ - -#ifndef remove -extern int unlink P((const char * filename)); -#define remove unlink -#endif /* !defined remove */ - -/* -** Some ancient errno.h implementations don't declare errno. -** But some newer errno.h implementations define it as a macro. -** Fix the former without affecting the latter. -*/ -#ifndef errno -extern int errno; -#endif /* !defined errno */ - -/* -** Finally, some convenience items. -*/ - -#ifndef TRUE -#define TRUE 1 -#endif /* !defined TRUE */ - -#ifndef FALSE -#define FALSE 0 -#endif /* !defined FALSE */ - -#ifndef TYPE_BIT -#define TYPE_BIT(type) (sizeof (type) * CHAR_BIT) -#endif /* !defined TYPE_BIT */ - -#ifndef TYPE_SIGNED -#define TYPE_SIGNED(type) (((type) -1) < 0) -#endif /* !defined TYPE_SIGNED */ - -#ifndef INT_STRLEN_MAXIMUM -/* -** 302 / 1000 is log10(2.0) rounded up. -** Subtract one for the sign bit if the type is signed; -** add one for integer division truncation; -** add one more for a minus sign if the type is signed. -*/ -#define INT_STRLEN_MAXIMUM(type) \ - ((TYPE_BIT(type) - TYPE_SIGNED(type)) * 302 / 100 + 1 + TYPE_SIGNED(type)) -#endif /* !defined INT_STRLEN_MAXIMUM */ - -/* -** INITIALIZE(x) -*/ - -#ifndef GNUC_or_lint -#ifdef lint -#define GNUC_or_lint -#endif /* defined lint */ -#ifndef lint -#ifdef __GNUC__ -#define GNUC_or_lint -#endif /* defined __GNUC__ */ -#endif /* !defined lint */ -#endif /* !defined GNUC_or_lint */ - -#ifndef INITIALIZE -#ifdef GNUC_or_lint -#define INITIALIZE(x) ((x) = 0) -#endif /* defined GNUC_or_lint */ -#ifndef GNUC_or_lint -#define INITIALIZE(x) -#endif /* !defined GNUC_or_lint */ -#endif /* !defined INITIALIZE */ - -/* -** For the benefit of GNU folk... -** `_(MSGID)' uses the current locale's message library string for MSGID. -** The default is to use gettext if available, and use MSGID otherwise. -*/ - -#ifndef _ -#if HAVE_GETTEXT - 0 -#define _(msgid) gettext(msgid) -#else /* !(HAVE_GETTEXT - 0) */ -#define _(msgid) msgid -#endif /* !(HAVE_GETTEXT - 0) */ -#endif /* !defined _ */ - -#ifndef TZ_DOMAIN -#define TZ_DOMAIN "tz" -#endif /* !defined TZ_DOMAIN */ - -/* -** UNIX was a registered trademark of UNIX System Laboratories in 1993. -*/ - -#endif /* !defined PRIVATE_H */ diff --git a/lib/libc/stdtime/strftime.c b/lib/libc/stdtime/strftime.c deleted file mode 100644 index a5ba85c90473..000000000000 --- a/lib/libc/stdtime/strftime.c +++ /dev/null @@ -1,604 +0,0 @@ -#ifndef lint -#ifndef NOID -static char elsieid[] = "@(#)strftime.c 7.47"; -/* -** Based on the UCB version with the ID appearing below. -** This is ANSIish only when "multibyte character == plain character". -*/ -#endif /* !defined NOID */ -#endif /* !defined lint */ - -#include "private.h" - -/* -** Copyright (c) 1989 The Regents of the University of California. -** All rights reserved. -** -** Redistribution and use in source and binary forms are permitted -** provided that the above copyright notice and this paragraph are -** duplicated in all such forms and that any documentation, -** advertising materials, and other materials related to such -** distribution and use acknowledge that the software was developed -** by the University of California, Berkeley. The name of the -** University may not be used to endorse or promote products derived -** from this software without specific prior written permission. -** THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR -** IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED -** WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. -*/ - -#ifndef LIBC_SCCS -#ifndef lint -static const char sccsid[] = "@(#)strftime.c 5.4 (Berkeley) 3/14/89"; -#endif /* !defined lint */ -#endif /* !defined LIBC_SCCS */ - -#include "tzfile.h" -#include "fcntl.h" -#include "locale.h" - -struct lc_time_T { - const char * mon[12]; - const char * month[12]; - const char * wday[7]; - const char * weekday[7]; - const char * X_fmt; - const char * x_fmt; - const char * c_fmt; - const char * am; - const char * pm; - const char * date_fmt; -}; - -#ifdef LOCALE_HOME -#include "sys/stat.h" -static struct lc_time_T localebuf; -static struct lc_time_T * _loc P((void)); -#define Locale _loc() -#endif /* defined LOCALE_HOME */ -#ifndef LOCALE_HOME -#define Locale (&C_time_locale) -#endif /* !defined LOCALE_HOME */ - -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 - ** Since the C language standard calls for - ** "date, using locale's date format," anything goes. - ** Using just numbers (as here) makes Quakers happier; - ** it's also compatible with SVR4. - */ - "%m/%d/%y", - - /* - ** c_fmt - ** Note that - ** "%a %b %d %H:%M:%S %Y" - ** is used by Solaris 2.3. - */ - "%D %X", /* %m/%d/%y %H:%M:%S */ - - /* am */ - "AM", - - /* pm */ - "PM", - - /* date_fmt */ - "%a %b %e %H:%M:%S %Z %Y" -}; - -static char * _add P((const char *, char *, const char *)); -static char * _conv P((int, const char *, char *, const char *)); -static char * _fmt P((const char *, const struct tm *, char *, const char *)); - -size_t strftime P((char *, size_t, const char *, const struct tm *)); - -extern char * tzname[]; - -size_t -strftime(s, maxsize, format, t) -char * const s; -const size_t maxsize; -const char * const format; -const struct tm * const t; -{ - char * p; - - tzset(); -#ifdef LOCALE_HOME - localebuf.mon[0] = 0; -#endif /* defined LOCALE_HOME */ - p = _fmt(((format == NULL) ? "%c" : format), t, s, s + maxsize); - if (p == s + maxsize) - return 0; - *p = '\0'; - return p - s; -} - -static char * -_fmt(format, t, pt, ptlim) -const char * format; -const struct tm * const t; -char * pt; -const char * const ptlim; -{ - for ( ; *format; ++format) { - if (*format == '%') { -label: - switch (*++format) { - case '\0': - --format; - break; - case 'A': - pt = _add((t->tm_wday < 0 || t->tm_wday > 6) ? - "?" : Locale->weekday[t->tm_wday], - pt, ptlim); - continue; - case 'a': - pt = _add((t->tm_wday < 0 || t->tm_wday > 6) ? - "?" : Locale->wday[t->tm_wday], - pt, ptlim); - continue; - case 'B': - pt = _add((t->tm_mon < 0 || t->tm_mon > 11) ? - "?" : Locale->month[t->tm_mon], - pt, ptlim); - continue; - case 'b': - case 'h': - pt = _add((t->tm_mon < 0 || t->tm_mon > 11) ? - "?" : 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, 5/24/93) - */ - pt = _conv((t->tm_year + TM_YEAR_BASE) / 100, - "%02d", pt, ptlim); - continue; - case 'c': - pt = _fmt(Locale->c_fmt, t, pt, ptlim); - continue; - case 'D': - pt = _fmt("%m/%d/%y", t, pt, ptlim); - continue; - case 'd': - pt = _conv(t->tm_mday, "%02d", pt, ptlim); - continue; - case 'E': - case 'O': - /* - ** POSIX locale extensions, a la - ** Arnold Robbins' strftime version 3.0. - ** The sequences - ** %Ec %EC %Ex %Ey %EY - ** %Od %oe %OH %OI %Om %OM - ** %OS %Ou %OU %OV %Ow %OW %Oy - ** are supposed to provide alternate - ** representations. - ** (ado, 5/24/93) - */ - goto label; - case 'e': - pt = _conv(t->tm_mday, "%2d", pt, ptlim); - 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, 5/24/93) - */ - 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, 5/24/93) - */ - 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 >= 12) ? - Locale->pm : - Locale->am, - pt, ptlim); - continue; - case 'R': - pt = _fmt("%H:%M", t, pt, ptlim); - continue; - case 'r': - pt = _fmt("%I:%M:%S %p", t, pt, ptlim); - 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 = *t; - mkt = mktime(&tm); - if (TYPE_SIGNED(time_t)) - (void) sprintf(buf, "%ld", - (long) mkt); - else (void) sprintf(buf, "%lu", - (unsigned long) mkt); - pt = _add(buf, pt, ptlim); - } - continue; - case 'T': - pt = _fmt("%H:%M:%S", t, pt, ptlim); - continue; - case 't': - pt = _add("\t", pt, ptlim); - continue; - case 'U': - pt = _conv((t->tm_yday + 7 - t->tm_wday) / 7, - "%02d", pt, ptlim); - continue; - case 'u': - /* - ** From Arnold Robbins' strftime version 3.0: - ** "ISO 8601: Weekday as a decimal number - ** [1 (Monday) - 7]" - ** (ado, 5/24/93) - */ - pt = _conv((t->tm_wday == 0) ? 7 : 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 "http://www.ft.uni-erlangen.de/~mskuhn/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 yday; - int wday; - int w; - - year = t->tm_year + TM_YEAR_BASE; - yday = t->tm_yday; - wday = t->tm_wday; - for ( ; ; ) { - int len; - int bot; - int top; - - len = isleap(year) ? - 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) { - ++year; - w = 1; - break; - } - if (yday >= bot) { - w = 1 + ((yday - bot) / - DAYSPERWEEK); - break; - } - --year; - yday += isleap(year) ? - DAYSPERLYEAR : - DAYSPERNYEAR; - } -#ifdef XPG4_1994_04_09 - if (w == 52 && t->tm_mon == TM_JANUARY) - w = 53; -#endif /* defined XPG4_1994_04_09 */ - if (*format == 'V') - pt = _conv(w, "%02d", - pt, ptlim); - else if (*format == 'G') - pt = _conv(year, "%02d", - pt, ptlim); - else pt = _conv(year, "%04d", - pt, ptlim); - } - continue; - case 'v': - /* - ** From Arnold Robbins' strftime version 3.0: - ** "date as dd-bbb-YYYY" - ** (ado, 5/24/93) - */ - pt = _fmt("%e-%b-%Y", t, pt, ptlim); - continue; - case 'W': - pt = _conv((t->tm_yday + 7 - - (t->tm_wday ? - (t->tm_wday - 1) : 6)) / 7, - "%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); - continue; - case 'x': - pt = _fmt(Locale->x_fmt, t, pt, ptlim); - continue; - case 'y': - pt = _conv((t->tm_year + TM_YEAR_BASE) % 100, - "%02d", pt, ptlim); - continue; - case 'Y': - pt = _conv(t->tm_year + TM_YEAR_BASE, "%04d", - pt, ptlim); - continue; - case 'Z': -#ifdef TM_ZONE - if (t->TM_ZONE != NULL) - pt = _add(t->TM_ZONE, pt, ptlim); - else -#endif /* defined TM_ZONE */ - if (t->tm_isdst == 0 || t->tm_isdst == 1) { - pt = _add(tzname[t->tm_isdst], - pt, ptlim); - } else pt = _add("?", pt, ptlim); - continue; - case '+': - pt = _fmt(Locale->date_fmt, t, pt, ptlim); - continue; - case '%': - /* - * X311J/88-090 (4.12.3.5): if conversion char is - * undefined, behavior is undefined. Print out the - * character itself as printf(3) also does. - */ - default: - break; - } - } - if (pt == ptlim) - break; - *pt++ = *format; - } - return pt; -} - -static char * -_conv(n, format, pt, ptlim) -const int n; -const char * const format; -char * const pt; -const char * const ptlim; -{ - char buf[INT_STRLEN_MAXIMUM(int) + 1]; - - (void) sprintf(buf, format, n); - return _add(buf, pt, ptlim); -} - -static char * -_add(str, pt, ptlim) -const char * str; -char * pt; -const char * const ptlim; -{ - while (pt < ptlim && (*pt = *str++) != '\0') - ++pt; - return pt; -} - -#ifdef LOCALE_HOME -static struct lc_time_T * -_loc P((void)) -{ - static const char locale_home[] = LOCALE_HOME; - static const char lc_time[] = "LC_TIME"; - static char * locale_buf; - static char locale_buf_C[] = "C"; - - int fd; - int oldsun; /* "...ain't got nothin' to do..." */ - char * lbuf; - char * name; - char * p; - const char ** ap; - const char * plim; - char filename[FILENAME_MAX]; - struct stat st; - size_t namesize; - size_t bufsize; - - /* - ** Use localebuf.mon[0] to signal whether locale is already set up. - */ - if (localebuf.mon[0]) - return &localebuf; - name = setlocale(LC_TIME, (char *) NULL); - if (name == NULL || *name == '\0') - goto no_locale; - /* - ** If the locale name is the same as our cache, use the cache. - */ - lbuf = locale_buf; - if (lbuf != NULL && strcmp(name, lbuf) == 0) { - p = lbuf; - for (ap = (const char **) &localebuf; - ap < (const char **) (&localebuf + 1); - ++ap) - *ap = p += strlen(p) + 1; - return &localebuf; - } - /* - ** Slurp the locale file into the cache. - */ - namesize = strlen(name) + 1; - if (sizeof(filename) < - sizeof(locale_home) + namesize + sizeof(lc_time)) - goto no_locale; - oldsun = 0; - (void) sprintf(filename, "%s/%s/%s", locale_home, name, lc_time); - fd = open(filename, O_RDONLY); - if (fd < 0) { - /* - ** Old Sun systems have a different naming and data convention. - */ - oldsun = 1; - (void) sprintf(filename, "%s/%s/%s", locale_home, - lc_time, name); - fd = open(filename, O_RDONLY); - if (fd < 0) - goto no_locale; - } - if (fstat(fd, &st) != 0) - goto bad_locale; - if (st.st_size <= 0) - goto bad_locale; - bufsize = namesize + st.st_size; - locale_buf = NULL; - lbuf = (lbuf == NULL || lbuf == locale_buf_C) ? - malloc(bufsize) : realloc(lbuf, bufsize); - if (lbuf == NULL) - goto bad_locale; - (void) strcpy(lbuf, name); - p = lbuf + namesize; - plim = p + st.st_size; - if (read(fd, p, (size_t) st.st_size) != st.st_size) - goto bad_lbuf; - if (close(fd) != 0) - goto bad_lbuf; - /* - ** Parse the locale file into localebuf. - */ - if (plim[-1] != '\n') - goto bad_lbuf; - for (ap = (const char **) &localebuf; - ap < (const char **) (&localebuf + 1); - ++ap) { - if (p == plim) - goto bad_lbuf; - *ap = p; - while (*p != '\n') - ++p; - *p++ = '\0'; - } - if (oldsun) { - /* - ** SunOS 4 used an obsolescent format; see localdtconv(3). - ** c_fmt had the ``short format for dates and times together'' - ** (SunOS 4 date, "%a %b %e %T %Z %Y" in the C locale); - ** date_fmt had the ``long format for dates'' - ** (SunOS 4 strftime %C, "%A, %B %e, %Y" in the C locale). - ** Discard the latter in favor of the former. - */ - localebuf.date_fmt = localebuf.c_fmt; - } - /* - ** Record the successful parse in the cache. - */ - locale_buf = lbuf; - - return &localebuf; - -bad_lbuf: - free(lbuf); -bad_locale: - (void) close(fd); -no_locale: - localebuf = C_time_locale; - locale_buf = locale_buf_C; - return &localebuf; -} -#endif /* defined LOCALE_HOME */ diff --git a/lib/libc/stdtime/time2posix.3 b/lib/libc/stdtime/time2posix.3 deleted file mode 100644 index 846a52ed1931..000000000000 --- a/lib/libc/stdtime/time2posix.3 +++ /dev/null @@ -1,119 +0,0 @@ -.TH TIME2POSIX 3 -.SH NAME -time2posix, posix2time \- convert seconds since the Epoch -.SH SYNOPSIS -.nf -.B #include <sys/types.h> -.B #include <time.h> -.PP -.B time_t time2posix(t) -.B time_t t -.PP -.B time_t posix2time(t) -.B time_t t -.PP -.B cc ... -lz -.fi -.SH DESCRIPTION -IEEE Standard 1003.1 -(POSIX) -legislates that a time_t value of -536457599 shall correspond to "Wed Dec 31 23:59:59 GMT 1986." -This effectively implies that POSIX time_t's cannot include leap -seconds and, -therefore, -that the system time must be adjusted as each leap occurs. -.PP -If the time package is configured with leap-second support -enabled, -however, -no such adjustment is needed and -time_t values continue to increase over leap events -(as a true `seconds since...' value). -This means that these values will differ from those required by POSIX -by the net number of leap seconds inserted since the Epoch. -.PP -Typically this is not a problem as the type time_t is intended -to be -(mostly) -opaque\(emtime_t values should only be obtained-from and -passed-to functions such as -.IR time(2) , -.IR localtime(3) , -.IR mktime(3) , -and -.IR difftime(3) . -However, -POSIX gives an arithmetic -expression for directly computing a time_t value from a given date/time, -and the same relationship is assumed by some -(usually older) -applications. -Any programs creating/dissecting time_t's -using such a relationship will typically not handle intervals -over leap seconds correctly. -.PP -The -.I time2posix -and -.I posix2time -functions are provided to address this time_t mismatch by converting -between local time_t values and their POSIX equivalents. -This is done by accounting for the number of time-base changes that -would have taken place on a POSIX system as leap seconds were inserted -or deleted. -These converted values can then be used in lieu of correcting the older -applications, -or when communicating with POSIX-compliant systems. -.PP -.I Time2posix -is single-valued. -That is, -every local time_t -corresponds to a single POSIX time_t. -.I Posix2time -is less well-behaved: -for a positive leap second hit the result is not unique, -and for a negative leap second hit the corresponding -POSIX time_t doesn't exist so an adjacent value is returned. -Both of these are good indicators of the inferiority of the -POSIX representation. -.PP -The following table summarizes the relationship between a time -T and it's conversion to, -and back from, -the POSIX representation over the leap second inserted at the end of June, -1993. -.nf -.ta \w'93/06/30 'u +\w'23:59:59 'u +\w'A+0 'u +\w'X=time2posix(T) 'u -DATE TIME T X=time2posix(T) posix2time(X) -93/06/30 23:59:59 A+0 B+0 A+0 -93/06/30 23:59:60 A+1 B+1 A+1 or A+2 -93/07/01 00:00:00 A+2 B+1 A+1 or A+2 -93/07/01 00:00:01 A+3 B+2 A+3 - -A leap second deletion would look like... - -DATE TIME T X=time2posix(T) posix2time(X) -??/06/30 23:59:58 A+0 B+0 A+0 -??/07/01 00:00:00 A+1 B+2 A+1 -??/07/01 00:00:01 A+2 B+3 A+2 -.sp -.ce - [Note: posix2time(B+1) => A+0 or A+1] -.fi -.PP -If leap-second support is not enabled, -local time_t's and -POSIX time_t's are equivalent, -and both -.I time2posix -and -.I posix2time -degenerate to the identity function. -.SH SEE ALSO -difftime(3), -localtime(3), -mktime(3), -time(2) -.\" @(#)time2posix.3 7.3 |