/*
* Convert a byte array into an hex string.
*/
static void
mem2hex(void *vdst, void *vsrc, int len)
{
u_char *dst = vdst;
u_char *src = vsrc;
while (len--) {
*dst++ = i2digit(*src >> 4);
*dst++ = i2digit(*src++);
}
*dst = '\0';
}
/*
* Send a packet.
*/
static void
kgdb_send(const u_char *bp)
{
const u_char *p;
u_char csum, c;
DPRINTF(("kgdb_send: %s\n", bp));
do {
p = bp;
PUTC(KGDB_START);
for (csum = 0; (c = *p); p++) {
PUTC(c);
csum += c;
}
PUTC(KGDB_END);
PUTC(i2digit(csum >> 4));
PUTC(i2digit(csum));
} while ((c = GETC() & 0x7f) == KGDB_BADP);
}
/*
* Send a packet.
*/
static void
kgdb_send(u_char *bp)
{
u_char *p;
u_char csum, c;
#ifdef DEBUG_KGDB
printf("kgdb_send: %s\n", bp);
#endif
do {
p = bp;
PUTC(KGDB_START);
for (csum = 0; (c = *p); p++) {
PUTC(c);
csum += c;
}
PUTC(KGDB_END);
PUTC(i2digit(csum >> 4));
PUTC(i2digit(csum));
} while ((c = GETC() & 0x7f) == KGDB_BADP);
}
int main(int argc, char *argv[]) {
if (argc < 3 || argc > 4) {
fprintf(stderr, "Usage: %s number from_base to_base\n", argv[0]);
fprintf(stderr, " from_base is optional, default to 10\n");
exit(EXIT_FAILURE);
}
long long int from_base = 0;
long long int to_base = 0;
char *fromBasePtr;
char *toBasePtr;
if (argc == 3) {
from_base = 10;
to_base = strtoll(argv[2], &toBasePtr, 10);
if (*toBasePtr) {
fprintf(stderr, "Invalid to_base number %s\n", argv[2]);
exit(EXIT_FAILURE);
}
}
else if (argc == 4) {
from_base = strtoll(argv[2], &fromBasePtr, 10);
if (*fromBasePtr) {
fprintf(stderr, "Invalid from_base number %s\n", argv[2]);
exit(EXIT_FAILURE);
}
to_base = strtoll(argv[3], &toBasePtr, 10);
if (*toBasePtr) {
fprintf(stderr, "Invalid to_base number %s\n", argv[3]);
exit(EXIT_FAILURE);
}
}
if (from_base < 2 || from_base > 36) {
fprintf(stderr, "Invalid from_base number %lli\n", from_base);
exit(EXIT_FAILURE);
}
if (to_base < 2 || to_base > 36) {
fprintf(stderr, "Invalid to_base number %lli\n", to_base);
exit(EXIT_FAILURE);
}
gchar *number = argv[1];
long long int temp = 0;
int carry = (int)strlen(number);
long long int _num = 1;
for (int i = carry - 1; i >= 0; i--) {
int n = digit2i(number[i]);
if (n < 0) {
fprintf(stderr, "Error on digit2i\n");
exit(EXIT_FAILURE);
}
temp += n * _num;
_num = _num * from_base;
}
gchar *output = NULL;
// If temp is zero, do conversion one time.
do {
char c = i2digit(temp % to_base);
char str[] = {c, '\0'};
if (c == '\0') {
fprintf(stderr, "Error on i2digit\n");
g_free(output);
exit(EXIT_FAILURE);
}
output = NULL == output ? g_strconcat(str, NULL) : g_strconcat(str, output, NULL);
temp = temp / to_base;
} while (temp);
g_print("%s\n", output);
g_free(output);
return 0;
}
