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* zic.c (stringzone): Add support for perpetual DST.

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This causes zic to generate, e.g., TZ='WART4WARST,J1/0,J365/24'
for perpetual DST in San Luis, Argentina.
See <http://mm.icann.org/pipermail/tz/2013-September/020056.html>.
This commit is contained in:
Paul Eggert
2013-09-06 18:56:00 -07:00
parent 07351e0248
commit 019082fd45
1 changed files with 7 additions and 3 deletions
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10
zic.c
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@@ -1886,7 +1886,7 @@ stringzone(char *result, const struct zone *const zpfirst, const int zonecount)
stdrp = rp;
}
if (stdrp != NULL && stdrp->r_stdoff != 0)
return; /* We end up in DST (a POSIX no-no). */
dstrp = stdrp; /* We end up in DST. */
/*
** Horrid special case: if year is 2037,
** presume this is a zone handled on a year-by-year basis;
@@ -1913,12 +1913,16 @@ stringzone(char *result, const struct zone *const zpfirst, const int zonecount)
return;
}
(void) strcat(result, ",");
if (stringrule(result, dstrp, dstrp->r_stdoff, zp->z_gmtoff) != 0) {
if (dstrp == stdrp)
(void) strcat(result, "J1/0");
else if (stringrule(result, dstrp, dstrp->r_stdoff, zp->z_gmtoff) != 0) {
result[0] = '\0';
return;
}
(void) strcat(result, ",");
if (stringrule(result, stdrp, dstrp->r_stdoff, zp->z_gmtoff) != 0) {
if (dstrp == stdrp)
(void) strcat(result, "J365/24");
else if (stringrule(result, stdrp, dstrp->r_stdoff, zp->z_gmtoff) != 0) {
result[0] = '\0';
return;
}