static char *
genhelp_handler (void)
{
int i, j;
unsigned long fp;
struct handler * h;
struct key * kw;
char * reply;
char * p;
reply = MALLOC(INITIAL_REPLY_LEN);
if (!reply)
return NULL;
p = reply;
p += sprintf(p, VERSION_STRING);
p += sprintf(p, "CLI commands reference:\n");
vector_foreach_slot (handlers, h, i) {
fp = h->fingerprint;
vector_foreach_slot (keys, kw, j) {
if ((kw->code & fp)) {
fp -= kw->code;
p += sprintf(p, " %s", kw->str);
p += genhelp_sprint_aliases(p, keys, kw);
if (kw->has_param)
p += sprintf(p, " $%s", kw->str);
}
}
p += sprintf(p, "\n");
}
static int
do_genhelp(char *reply, int maxlen, const char *cmd, int error) {
int len = 0;
int i, j;
uint64_t fp;
struct handler * h;
struct key * kw;
switch(error) {
case ENOMEM:
len += snprintf(reply + len, maxlen - len,
"%s: Not enough memory\n", cmd);
break;
case EAGAIN:
len += snprintf(reply + len, maxlen - len,
"%s: not found\n", cmd);
break;
case EINVAL:
len += snprintf(reply + len, maxlen - len,
"%s: Missing argument\n", cmd);
break;
}
if (len >= maxlen)
goto out;
len += snprintf(reply + len, maxlen - len, VERSION_STRING);
if (len >= maxlen)
goto out;
len += snprintf(reply + len, maxlen - len, "CLI commands reference:\n");
if (len >= maxlen)
goto out;
vector_foreach_slot (handlers, h, i) {
fp = h->fingerprint;
vector_foreach_slot (keys, kw, j) {
if ((kw->code & fp)) {
fp -= kw->code;
len += snprintf(reply + len , maxlen - len,
" %s", kw->str);
if (len >= maxlen)
goto out;
len += genhelp_sprint_aliases(reply + len,
maxlen - len,
keys, kw);
if (len >= maxlen)
goto out;
if (kw->has_param) {
len += snprintf(reply + len,
maxlen - len,
" $%s", kw->str);
if (len >= maxlen)
goto out;
}
}
}
len += snprintf(reply + len, maxlen - len, "\n");
if (len >= maxlen)
goto out;
}
