rainlance/amiga-tz
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name change enhancement

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SCCS-file: zdump.c
SCCS-SID: 4.10
This commit is contained in:
Arthur David Olson
1989-03-17 20:26:01 -05:00
committed by Paul Eggert
parent f05c2ae1be
commit 7b93470134
1 changed files with 33 additions and 2 deletions
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35
zdump.c
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@ -63,6 +63,9 @@ static int longest;
static void show();
static void hunt();
static long delta();
static char * ecpyalloc();
static char * progname;
int
main(argc, argv)
@ -79,6 +82,7 @@ char * argv[];
time_t hibit;
struct tm tm, newtm;
progname = argv[0];
vflag = 0;
cutoff = NULL;
while ((c = getopt(argc, argv, "c:v")) == 'c' || c == 'v')
@ -108,6 +112,7 @@ char * argv[];
for (i = optind; i < argc; ++i) {
register char ** saveenv;
char * tzequals;
char * ab;
char * fakeenv[2];
tzequals = malloc((unsigned) (strlen(argv[i]) + 4));
@ -137,6 +142,7 @@ char * argv[];
t += SECSPERHOUR * HOURSPERDAY;
show(argv[i], t, TRUE);
tm = *localtime(&t);
ab = ecpyalloc(tzname[tm.tm_isdst]);
for ( ; ; ) {
if (cutoff != NULL && t >= cuttime)
break;
@ -147,8 +153,12 @@ char * argv[];
break;
newtm = *localtime(&newt);
if (delta(&newtm, &tm) != (newt - t) ||
newtm.tm_isdst != tm.tm_isdst)
newtm.tm_isdst != tm.tm_isdst ||
strcmp(tzname[newtm.tm_isdst], ab) != 0) {
hunt(argv[i], t, newt);
free(ab);
ab = ecpyalloc(tzname[newtm.tm_isdst]);
}
t = newt;
tm = newtm;
}
@ -183,8 +193,10 @@ time_t hit;
time_t t;
struct tm lotm;
struct tm tm;
char * loab;
lotm = *localtime(&lot);
loab = ecpyalloc(tzname[lotm.tm_isdst]);
while ((hit - lot) >= 2) {
t = lot / 2 + hit / 2;
if (t <= lot)
@ -193,13 +205,15 @@ time_t hit;
--t;
tm = *localtime(&t);
if (delta(&tm, &lotm) == (t - lot) &&
tm.tm_isdst == lotm.tm_isdst) {
tm.tm_isdst == lotm.tm_isdst &&
strcmp(tzname[tm.tm_isdst], loab) == 0) {
lot = t;
lotm = tm;
} else hit = t;
}
show(name, lot, TRUE);
show(name, hit, TRUE);
free(loab);
}
static long
@ -242,3 +256,20 @@ int v;
}
(void) printf("\n");
}
static char *
ecpyalloc(string)
char * string;
{
register char * result;
register int length;
length = strlen(string);
result = malloc(length + 1);
if (result == 0) {
(void) fprintf(stderr, "%s: can't allocate memory\n", progname);
(void) exit(EXIT_FAILURE);
}
(void) strcpy(result, string);
return result;
}