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time_t work
SCCS-file: zic.c SCCS-SID: 7.118
This commit is contained in:
Arthur David Olson
committed by
Paul Eggert
Paul Eggert
parent
26d36f0f9b
commit
bdab69c402
71
zic.c
71
zic.c
@ -1,5 +1,11 @@
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static char elsieid[] = "%W%";
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/*
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** Regardless of the type of time_t, we do our work using this type.
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*/
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typedef int zic_t;
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#include "private.h"
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#include "locale.h"
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#include "tzfile.h"
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@ -50,7 +56,7 @@ struct rule {
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const char * r_abbrvar; /* variable part of abbreviation */
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int r_todo; /* a rule to do (used in outzone) */
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time_t r_temp; /* used in outzone */
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zic_t r_temp; /* used in outzone */
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};
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/*
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@ -76,7 +82,7 @@ struct zone {
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int z_nrules;
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struct rule z_untilrule;
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time_t z_untiltime;
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zic_t z_untiltime;
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};
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extern int getopt P((int argc, char * const argv[],
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@ -85,10 +91,10 @@ extern int link P((const char * fromname, const char * toname));
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extern char * optarg;
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extern int optind;
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static void addtt P((time_t starttime, int type));
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static void addtt P((zic_t starttime, int type));
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static int addtype P((long gmtoff, const char * abbr, int isdst,
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int ttisstd, int ttisgmt));
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static void leapadd P((time_t t, int positive, int rolling, int count));
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static void leapadd P((zic_t t, int positive, int rolling, int count));
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static void adjleap P((void));
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static void associate P((void));
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static int ciequal P((const char * ap, const char * bp));
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@ -121,13 +127,13 @@ static long oadd P((long t1, long t2));
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static void outzone P((const struct zone * zp, int ntzones));
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static void puttzcode P((long code, FILE * fp));
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static int rcomp P((const void * leftp, const void * rightp));
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static time_t rpytime P((const struct rule * rp, int wantedy));
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static zic_t rpytime P((const struct rule * rp, int wantedy));
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static void rulesub P((struct rule * rp,
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const char * loyearp, const char * hiyearp,
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const char * typep, const char * monthp,
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const char * dayp, const char * timep));
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static void setboundaries P((void));
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static time_t tadd P((time_t t1, long t2));
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static zic_t tadd P((zic_t t1, long t2));
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static void usage P((void));
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static void writezone P((const char * name));
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static int yearistype P((int year, const char * type));
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@ -141,10 +147,10 @@ static int errors;
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static const char * filename;
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static int leapcnt;
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static int linenum;
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static time_t max_time;
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static zic_t max_time;
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static int max_year;
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static int max_year_representable;
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static time_t min_time;
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static zic_t min_time;
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static int min_year;
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static int min_year_representable;
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static int noise;
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@ -334,7 +340,7 @@ static const int len_years[2] = {
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};
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static struct attype {
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time_t at;
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zic_t at;
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unsigned char type;
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} attypes[TZ_MAX_TIMES];
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static long gmtoffs[TZ_MAX_TYPES];
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@ -343,7 +349,7 @@ static unsigned char abbrinds[TZ_MAX_TYPES];
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static char ttisstds[TZ_MAX_TYPES];
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static char ttisgmts[TZ_MAX_TYPES];
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static char chars[TZ_MAX_CHARS];
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static time_t trans[TZ_MAX_LEAPS];
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static zic_t trans[TZ_MAX_LEAPS];
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static long corr[TZ_MAX_LEAPS];
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static char roll[TZ_MAX_LEAPS];
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@ -665,14 +671,15 @@ warning(_("hard link failed, symbolic link used"));
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*/
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#define MAX_BITS_IN_FILE 32
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#define TIME_T_BITS_IN_FILE ((TYPE_BIT(time_t) < MAX_BITS_IN_FILE) ? TYPE_BIT(time_t) : MAX_BITS_IN_FILE)
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#define TIME_T_BITS_IN_FILE ((TYPE_BIT(zic_t) < MAX_BITS_IN_FILE) ? \
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TYPE_BIT(zic_t) : MAX_BITS_IN_FILE)
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static void
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setboundaries P((void))
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{
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register int i;
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if (TYPE_SIGNED(time_t)) {
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if (TYPE_SIGNED(zic_t)) {
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min_time = -1;
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for (i = 0; i < TIME_T_BITS_IN_FILE - 1; ++i)
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min_time *= 2;
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@ -686,8 +693,14 @@ setboundaries P((void))
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max_time *= 2;
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--max_time;
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}
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min_year = TM_YEAR_BASE + gmtime(&min_time)->tm_year;
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max_year = TM_YEAR_BASE + gmtime(&max_time)->tm_year;
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{
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time_t t;
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t = (time_t) min_time;
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min_year = TM_YEAR_BASE + gmtime(&t)->tm_year;
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t = (time_t) max_time;
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max_year = TM_YEAR_BASE + gmtime(&t)->tm_year;
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}
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min_year_representable = min_year;
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max_year_representable = max_year;
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}
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@ -1113,7 +1126,7 @@ const int nfields;
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register int i, j;
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int year, month, day;
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long dayoff, tod;
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time_t t;
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zic_t t;
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if (nfields != LEAP_FIELDS) {
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error(_("wrong number of fields on Leap line"));
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@ -1157,7 +1170,7 @@ const int nfields;
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return;
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}
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dayoff = oadd(dayoff, eitol(day - 1));
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if (dayoff < 0 && !TYPE_SIGNED(time_t)) {
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if (dayoff < 0 && !TYPE_SIGNED(zic_t)) {
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error(_("time before zero"));
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return;
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}
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@ -1169,7 +1182,7 @@ const int nfields;
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error(_("time too large"));
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return;
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}
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t = (time_t) dayoff * SECSPERDAY;
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t = (zic_t) dayoff * SECSPERDAY;
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tod = gethms(fields[LP_TIME], _("invalid time of day"), FALSE);
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cp = fields[LP_CORR];
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{
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@ -1431,7 +1444,7 @@ const char * const name;
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register int i, j;
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static char * fullname;
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static struct tzhead tzh;
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time_t ats[TZ_MAX_TIMES];
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zic_t ats[TZ_MAX_TIMES];
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unsigned char types[TZ_MAX_TIMES];
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/*
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@ -1596,7 +1609,7 @@ const int zonecount;
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register struct rule * rp;
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register int i, j;
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register int usestart, useuntil;
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register time_t starttime, untiltime;
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register zic_t starttime, untiltime;
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register long gmtoff;
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register long stdoff;
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register int year;
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@ -1665,7 +1678,7 @@ const int zonecount;
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}
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for ( ; ; ) {
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register int k;
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register time_t jtime, ktime;
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register zic_t jtime, ktime;
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register long offset;
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char buf[BUFSIZ];
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@ -1777,7 +1790,7 @@ error(_("can't determine time zone abbreviation to use just after until time"));
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static void
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addtt(starttime, type)
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const time_t starttime;
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const zic_t starttime;
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int type;
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{
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if (starttime <= min_time ||
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@ -1861,7 +1874,7 @@ const int ttisgmt;
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static void
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leapadd(t, positive, rolling, count)
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const time_t t;
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const zic_t t;
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const int positive;
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const int rolling;
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int count;
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@ -2049,12 +2062,12 @@ const long t2;
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return t;
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}
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static time_t
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static zic_t
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tadd(t1, t2)
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const time_t t1;
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const zic_t t1;
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const long t2;
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{
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register time_t t;
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register zic_t t;
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if (t1 == max_time && t2 > 0)
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return max_time;
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@ -2073,14 +2086,14 @@ const long t2;
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** 1970, 00:00 LOCAL time - in that year that the rule refers to.
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*/
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static time_t
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static zic_t
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rpytime(rp, wantedy)
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register const struct rule * const rp;
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register const int wantedy;
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{
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register int y, m, i;
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register long dayoff; /* with a nod to Margaret O. */
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register time_t t;
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register zic_t t;
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if (wantedy == INT_MIN)
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return min_time;
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@ -2147,13 +2160,13 @@ register const int wantedy;
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warning(_("rule goes past start/end of month--will not work with pre-2004 versions of zic"));
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}
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}
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if (dayoff < 0 && !TYPE_SIGNED(time_t))
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if (dayoff < 0 && !TYPE_SIGNED(zic_t))
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return min_time;
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if (dayoff < min_time / SECSPERDAY)
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return min_time;
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if (dayoff > max_time / SECSPERDAY)
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return max_time;
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t = (time_t) dayoff * SECSPERDAY;
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t = (zic_t) dayoff * SECSPERDAY;
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return tadd(t, rp->r_tod);
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}
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