char *random_string(char *str) {
int i, length = 1 + sizeof *str;
for(i = 0; i < length; ++i) {
str[i] = random_letter();
}
str[i] = '\0';
return str;
}
static void random_string(int length, char *str) {
int i;
int char_type;
for (i = 0; i < length; i++) {
char_type = (int) (3 * (rand() / (RAND_MAX + 1.0)));
switch (char_type) {
case 0:
str[i] = random_letter(0);
break;
case 1:
str[i] = random_letter(1);
break;
case 2:
str[i] = random_number();
break;
default:
str[i] = random_number();
break;
}
}
}
void robot_name(struct mtwist_state *mt, char *buffer, int buflen)
{
static char *robot_patterns[] = { "LNLN", "LNLL", "LNNL", "LLNL", "LLNN", "LNNN" };
char *pattern = random_word(mt, robot_patterns, ARRAYSIZE(robot_patterns));
int i;
char name[20];
memset(name, 0, sizeof(name));
for (i = 0; pattern[i]; i++) {
switch (pattern[i]) {
case 'L':
name[i] = random_letter(mt);
break;
case 'N':
name[i] = random_digit(mt);
break;
}
}
strncpy(buffer, name, buflen);
}
