MOUL::Creatable* MOUL::Factory::ReadCreatable(DS::Stream* stream)
{
uint16_t type = stream->read<uint16_t>();
Creatable* obj = Create(type);
if (obj) {
try {
obj->read(stream);
} catch (...) {
obj->unref();
throw;
}
}
return obj;
}
void MOUL::CreatableList::write(DS::Stream* stream) const
{
DS::BufferStream ram;
uint16_t numItems = m_items.size();
ram.write<uint16_t>(numItems);
for (auto& it : m_items) {
uint16_t id = it.first;
Creatable* item = it.second;
uint16_t type = item->type();
ram.write<uint16_t>(id);
ram.write<uint16_t>(type);
item->write(&ram);
}
uint32_t bufSz = ram.tell();
ram.seek(0, SEEK_SET);
uint8_t* buf = new uint8_t[bufSz];
ram.readBytes(buf, bufSz);
uLongf zBufSz;
uint8_t flags = m_flags & ~e_Compressed;
if (flags & e_WantCompression && bufSz > COMPRESSION_THRESHOLD) {
uint8_t* zBuf = new uint8_t[bufSz];
int result = compress(zBuf, &zBufSz, buf, bufSz);
if (result != Z_OK) {
delete[] buf;
delete[] zBuf;
DS_PASSERT(0);
}
memcpy(buf, zBuf, zBufSz);
delete[] zBuf;
flags |= e_Compressed;
}
ram.truncate();
ram.write<uint8_t>(flags);
ram.write<uint32_t>(bufSz);
if (flags & e_Compressed) {
bufSz = zBufSz;
ram.write<uint32_t>(bufSz);
}
ram.writeBytes(buf, bufSz);
delete[] buf;
stream->writeBytes(ram.buffer(), ram.tell());
}
void MOUL::CreatableList::read(DS::Stream* stream)
{
clear();
m_flags = stream->read<uint8_t>();
uint32_t bufSz = stream->read<uint32_t>();
uint8_t* buf = new uint8_t[bufSz];
if (m_flags & e_Compressed) {
uint32_t zBufSz = stream->read<uint32_t>();
uint8_t* zBuf = new uint8_t[zBufSz];
stream->readBytes(zBuf, zBufSz);
uLongf zLen;
int result = uncompress(buf, &zLen, zBuf, zBufSz);
delete[] zBuf;
if (result != Z_OK) {
delete[] buf;
DS_PASSERT(0);
}
DS_PASSERT(zLen == bufSz);
m_flags &= ~e_Compressed;
} else {
stream->readBytes(buf, bufSz);
}
DS::BufferStream ram;
ram.steal(buf, bufSz);
uint16_t numItems = ram.read<uint16_t>();
for (uint16_t i = 0; i < numItems; i++) {
uint16_t id = ram.read<uint16_t>();
uint16_t type = ram.read<uint16_t>();
Creatable* cre = Factory::Create(type);
DS_PASSERT(cre);
cre->read(&ram);
m_items[id] = cre;
}
}
