// returns the entry number or -1 on eof
int decode(Buffer b) {
int ptr = 0;
DecodeAux t = decode_tree;
int lok = b.look(t.tabn);
// System.err.println(this+" "+t+" lok="+lok+", tabn="+t.tabn);
if (lok >= 0) {
ptr = t.tab[lok];
b.adv(t.tabl[lok]);
if (ptr <= 0) {
return -ptr;
}
}
do {
switch (b.read1()) {
case 0:
ptr = t.ptr0[ptr];
break;
case 1:
ptr = t.ptr1[ptr];
break;
case -1:
default:
return (-1);
}
} while (ptr > 0);
return (-ptr);
}
