int
main(int argc, char *argv[])
{
int val;
argv++;
for (; *argv != 0; ++argv) {
// ./factor -a -> "factor all the integers"
if (argv[0][0] == '-' && argv[0][1] == 'a') {
int i;
for (i = 1; ; i++) {
pr_fact(i);
}
// never exits
}
if (argv[0][0] == '-') {
printf(2, "negative numbers aren't permitted.");
continue;
}
val = atoi(argv[0]);
if (val == 0) {
printf(2, "error parsing %s", argv[0]);
continue;
}
pr_fact(val);
}
exit();
}
int
main(int argc, char *argv[])
{
BIGNUM *val;
int ch;
char *p, buf[LINE_MAX]; /* > max number of digits. */
ctx = BN_CTX_new();
val = BN_new();
if (val == NULL)
errx(1, "can't initialise bignum");
while ((ch = getopt(argc, argv, "h")) != -1)
switch (ch) {
case 'h':
hflag++;
break;
case '?':
default:
usage();
}
argc -= optind;
argv += optind;
/* No args supplied, read numbers from stdin. */
if (argc == 0)
for (;;) {
if (fgets(buf, sizeof(buf), stdin) == NULL) {
if (ferror(stdin))
err(1, "stdin");
exit (0);
}
for (p = buf; isblank(*p); ++p);
if (*p == '\n' || *p == '\0')
continue;
if (*p == '-')
errx(1, "negative numbers aren't permitted.");
if (BN_dec2bn(&val, buf) == 0 &&
BN_hex2bn(&val, buf) == 0)
errx(1, "%s: illegal numeric format.", buf);
pr_fact(val);
}
/* Factor the arguments. */
else
for (; *argv != NULL; ++argv) {
if (argv[0][0] == '-')
errx(1, "negative numbers aren't permitted.");
if (BN_dec2bn(&val, argv[0]) == 0 &&
BN_hex2bn(&val, argv[0]) == 0)
errx(1, "%s: illegal numeric format.", argv[0]);
pr_fact(val);
}
exit(0);
}
int
main(int argc, char *argv[])
{
u_int64_t val;
int ch;
char *p, buf[100]; /* > max number of digits. */
if (pledge("stdio", NULL) == -1)
err(1, "pledge");
while ((ch = getopt(argc, argv, "h")) != -1) {
switch (ch) {
case 'h':
default:
usage();
}
}
argc -= optind;
argv += optind;
/* No args supplied, read numbers from stdin. */
if (argc == 0) {
for (;;) {
if (fgets(buf, sizeof(buf), stdin) == NULL) {
if (ferror(stdin))
err(1, "stdin");
return 0;
}
buf[strcspn(buf, "\n")] = '\0';
for (p = buf; isblank((unsigned char)*p); ++p)
;
if (*p == '\0')
continue;
if (*p == '-')
errx(1, "negative numbers aren't permitted.");
errno = 0;
val = strtouq(buf, &p, 10);
if (errno)
err(1, "%s", buf);
for (; isblank((unsigned char)*p); ++p)
;
if (*p != '\0')
errx(1, "%s: illegal numeric format.", buf);
pr_fact(val);
}
/* Factor the arguments. */
} else {
for (; *argv != NULL; ++argv) {
if (argv[0][0] == '-')
errx(1, "negative numbers aren't permitted.");
errno = 0;
val = strtouq(argv[0], &p, 10);
if (errno)
err(1, "%s", argv[0]);
if (*p != '\0')
errx(1, "%s: illegal numeric format.", argv[0]);
pr_fact(val);
}
}
return 0;
}
