size_t mcnet_slot_parser_parse(mcnet_slot_parser_t* parser, uint8_t* data, size_t len) {
mcnet_slot_t slot;
size_t nparsed = 0;
slot.item = 0;
slot.count = 0;
slot.meta = 0;
slot.data_len = 0;
slot.data = NULL;
if (len < nparsed + 2) {
return MCNET_EAGAIN;
}
slot.item = mcnet_read_int16(data + nparsed);
nparsed += 2;
if (slot.item == -1) {
if (parser && parser->on_complete) {
parser->on_complete(parser, &slot);
}
return nparsed;
}
if (len < nparsed + 3) {
return MCNET_EAGAIN;
}
slot.count = mcnet_read_int8(data + nparsed);
nparsed += 1;
slot.meta = mcnet_read_int16(data + nparsed);
nparsed += 2;
if (!((slot.item == 256) || (slot.item == 257) || (slot.item == 258) || (slot.item == 259) || (slot.item == 261) || (slot.item == 267) || (slot.item == 268) || (slot.item == 269) || (slot.item == 270) || (slot.item == 271) || (slot.item == 272) || (slot.item == 273) || (slot.item == 274) || (slot.item == 275) || (slot.item == 276) || (slot.item == 277) || (slot.item == 278) || (slot.item == 279) || (slot.item == 283) || (slot.item == 284) || (slot.item == 285) || (slot.item == 286) || (slot.item == 290) || (slot.item == 291) || (slot.item == 292) || (slot.item == 293) || (slot.item == 294) || (slot.item == 298) || (slot.item == 299) || (slot.item == 300) || (slot.item == 301) || (slot.item == 302) || (slot.item == 303) || (slot.item == 304) || (slot.item == 305) || (slot.item == 306) || (slot.item == 307) || (slot.item == 308) || (slot.item == 309) || (slot.item == 310) || (slot.item == 311) || (slot.item == 312) || (slot.item == 313) || (slot.item == 314) || (slot.item == 315) || (slot.item == 316) || (slot.item == 317) || (slot.item == 346) || (slot.item == 359))) {
if (parser && parser->on_complete) {
parser->on_complete(parser, &slot);
}
return nparsed;
}
if (len < nparsed + 2) {
return MCNET_EAGAIN;
}
slot.data_len = mcnet_read_int16(data + nparsed);
nparsed += 2;
if (slot.data_len != -1) {
if (len < nparsed + slot.data_len) {
return MCNET_EAGAIN;
}
slot.data = data + nparsed;
nparsed += slot.data_len;
}
if (parser && parser->on_complete) {
parser->on_complete(parser, &slot);
}
return nparsed;
}
size_t mcnet_metadata_parser_execute(mcnet_metadata_parser_t* parser, uint8_t* data, size_t len) {
size_t nparsed = 0;
if (len < nparsed + 1) {
return MCNET_EAGAIN;
}
uint8_t x = *(data + nparsed);
nparsed += 1;
if (x == 127) {
return nparsed;
}
uint8_t index = x & 0x1F,
type = x >> 5;
switch (type) {
case MCNET_METADATA_TYPE_BYTE: {
mcnet_metadata_entry_byte_t entry;
entry.type = type;
entry.index = index;
if (len < nparsed + 1) { return MCNET_EAGAIN; }
entry.data = mcnet_read_int8(data + nparsed);
nparsed += 1;
if (parser && parser->on_entry) { parser->on_entry(parser, (mcnet_metadata_entry_t*)&entry); }
return nparsed;
}
case MCNET_METADATA_TYPE_SHORT: {
mcnet_metadata_entry_short_t entry;
entry.type = type;
entry.index = index;
if (len < nparsed + 2) { return MCNET_EAGAIN; }
entry.data = mcnet_read_int16(data + nparsed);
nparsed += 2;
if (parser && parser->on_entry) { parser->on_entry(parser, (mcnet_metadata_entry_t*)&entry); }
return nparsed;
}
case MCNET_METADATA_TYPE_INT: {
mcnet_metadata_entry_int_t entry;
entry.type = type;
entry.index = index;
if (len < nparsed + 4) { return MCNET_EAGAIN; }
entry.data = mcnet_read_int32(data + nparsed);
nparsed += 4;
if (parser && parser->on_entry) { parser->on_entry(parser, (mcnet_metadata_entry_t*)&entry); }
return nparsed;
}
case MCNET_METADATA_TYPE_FLOAT: {
mcnet_metadata_entry_float_t entry;
entry.type = type;
entry.index = index;
if (len < nparsed + 4) { return MCNET_EAGAIN; }
entry.data = mcnet_read_float(data + nparsed);
nparsed += 4;
if (parser && parser->on_entry) { parser->on_entry(parser, (mcnet_metadata_entry_t*)&entry); }
return nparsed;
}
case MCNET_METADATA_TYPE_STRING16: {
mcnet_metadata_entry_string16_t entry;
entry.type = type;
entry.index = index;
if (len < nparsed + 2) { return MCNET_EAGAIN; }
entry.data_length = mcnet_read_int16(data + nparsed);
nparsed += 2;
if (len < nparsed + entry.data_length * 2) { return MCNET_EAGAIN; }
entry.data = data + nparsed;
nparsed += entry.data_length * 2;
if (parser && parser->on_entry) { parser->on_entry(parser, (mcnet_metadata_entry_t*)&entry); }
return nparsed;
}
case MCNET_METADATA_TYPE_SLOT: {
mcnet_metadata_entry_sbs_t entry;
entry.type = type;
entry.index = index;
if (len < nparsed + 5) { return MCNET_EAGAIN; }
entry.id = mcnet_read_int16(data + nparsed);
nparsed += 2;
entry.count = mcnet_read_int8(data + nparsed);
nparsed += 1;
entry.damage = mcnet_read_int16(data + nparsed);
nparsed += 2;
if (parser && parser->on_entry) { parser->on_entry(parser, (mcnet_metadata_entry_t*)&entry); }
return nparsed;
}
case MCNET_METADATA_TYPE_INTS: {
mcnet_metadata_entry_iii_t entry;
entry.type = type;
entry.index = index;
if (len < nparsed + 12) { return MCNET_EAGAIN; }
entry.data[0] = mcnet_read_int32(data + nparsed);
nparsed += 4;
entry.data[1] = mcnet_read_int32(data + nparsed);
nparsed += 4;
entry.data[2] = mcnet_read_int32(data + nparsed);
nparsed += 4;
if (parser && parser->on_entry) { parser->on_entry(parser, (mcnet_metadata_entry_t*)&entry); }
return nparsed;
}
default: {
if (parser && parser->on_error) { parser->on_error(parser, MCNET_EINVALID); }
return MCNET_EINVALID;
}
}
}
