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minimum year support; better exit status

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SCCS-file: zic.c
SCCS-SID: 2.16
This commit is contained in:
Arthur David Olson
1986-11-15 20:46:23 -05:00
committed by Paul Eggert
parent 670d412cb5
commit 9d3c1f32fb
1 changed files with 25 additions and 9 deletions
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34
zic.c
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@ -62,6 +62,7 @@ static long typecnt;
#define EPOCH_YEAR 1970L
#define EPOCH_WDAY TM_THURSDAY
#define MIN_YEAR 1902L
#define MAX_YEAR 2037L
/*
@ -264,6 +265,20 @@ static struct lookup lasts[] = {
NULL, 0
};
static struct lookup begin_years[] = {
"minimum", MIN_YEAR,
"maximum", MAX_YEAR,
NULL, 0
}
static struct lookup end_years[] = {
"minimum", MIN_YEAR,
"maximum", MAX_YEAR,
#define ONLY EPOCH_YEAR /* surely neither MIN_YEAR nor MAX_YEAR */
"only", ONLY_YEAR,
NULL, 0
}
static long mon_lengths[2][12] = { /* ". . .knuckles are 31. . ." */
31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31,
31, 29, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31
@ -452,7 +467,7 @@ char * argv[];
exit(1);
}
}
exit(0);
exit((errors == 0) ? 0 : 1);
}
/*
@ -859,19 +874,18 @@ char * timep;
** Year work.
*/
cp = loyearp;
if (isabbr(cp, "maximum"))
rp->r_loyear = MAX_YEAR;
if ((lp = lookup(cp, begin_years)) != NULL)
rp->r_loyear = lp->l_value;
else if (sscanf(cp, scheck(cp, "%ld"), &rp->r_loyear) != 1 ||
rp->r_loyear <= 0) {
error("invalid starting year");
return;
}
cp = hiyearp;
if (*cp == '\0' || ciequal(cp, "only"))
rp->r_hiyear = rp->r_loyear;
else if (isabbr(cp, "maximum"))
rp->r_hiyear = MAX_YEAR;
else if (sscanf(cp, scheck(cp, "%ld"), &rp->r_hiyear) != 1 ||
if ((lp = lookup(cp, end_years)) != NULL) {
if ((rp->r_hiyear = lp->l_value) == ONLY)
rp->r_hiyear = rp->r_loyear;
} else if (sscanf(cp, scheck(cp, "%ld"), &rp->r_hiyear) != 1 ||
rp->r_hiyear <= 0) {
error("invalid ending year");
return;
@ -1472,8 +1486,10 @@ register long wantedy;
/*
** Cheap overflow check.
*/
if (t / SECS_PER_DAY != dayoff)
if (t / SECS_PER_DAY != dayoff) {
error("time overflow");
exit(1);
}
return tadd(t, rp->r_tod);
}