C++ BinaryNode::skip方法代码示例

ClientVersionID IOMapOTMM::getVersionInfo(const FileName& filename)
{
	wxString wpath = filename.GetFullPath();
	DiskNodeFileReadHandle f((const char*)wpath.mb_str(wxConvUTF8));
	if(f.isOk() == false) {
		return CLIENT_VERSION_NONE;
	}

	BinaryNode* root = f.getRootNode();
	if(!root) {return CLIENT_VERSION_NONE;}
	root->skip(1); // Skip the type byte

	uint16_t u16;
	uint32_t u32;

	if(!root->getU32(u32) || u32 != 1) { // Version
		return CLIENT_VERSION_NONE;
	}

	root->getU16(u16);
	root->getU16(u16);
	root->getU32(u32);

	if(root->getU32(u32)) { // OTB minor version
		return ClientVersionID(u32);
	}
	return CLIENT_VERSION_NONE;
}

bool ItemDatabase::loadFromOtb(const FileName& datafile, wxString& error, wxArrayString& warnings)
{
	std::string filename = nstr((datafile.GetPath(wxPATH_GET_VOLUME | wxPATH_GET_SEPARATOR) + datafile.GetFullName()));
	DiskNodeFileReadHandle f(filename, StringVector(1, "OTBI"));

	if(!f.isOk()) {
		error = wxT("Couldn't open file \"") + wxstr(filename) + wxT("\":") + wxstr(f.getErrorMessage());
		return false;
	}

	BinaryNode* root = f.getRootNode();

#define safe_get(node, func, ...) do {\
		if(!node->get##func(__VA_ARGS__)) {\
			error = wxstr(f.getErrorMessage()); \
			return false; \
		} \
	} while(false)

	// Read root flags
	root->skip(1); // Type info
	//uint32_t flags =

	root->skip(4); // Unused?

	uint8_t attr;
	safe_get(root, U8, attr);
	if(attr == ROOT_ATTR_VERSION) {
		uint16_t datalen;
		if(!root->getU16(datalen) || datalen != 4 + 4 + 4 + 1*128) {
			error = wxT("items.otb: Size of version header is invalid, updated .otb version?");
			return false;
		}
		safe_get(root, U32, MajorVersion);	// items otb format file version
		safe_get(root, U32, MinorVersion);	// client version
		safe_get(root, U32, BuildNumber);	// revision
		std::string csd;
		csd.resize(128);
		
		if(!root->getRAW((uint8_t*)csd.data(), 128)) { // CSDVersion ??
			error = wxstr(f.getErrorMessage());
			return false;
		}
	} else {
		error = wxT("Expected ROOT_ATTR_VERSION as first node of items.otb!");
	}

	if(settings.getInteger(Config::CHECK_SIGNATURES)) {
		if(gui.GetCurrentVersion().getOTBVersion().format_version != MajorVersion) {
			error = wxT("Unsupported items.otb version (version ") + i2ws(MajorVersion) + wxT(")");
			return false;
		}
	}

	BinaryNode* itemNode = root->getChild();
	switch(MajorVersion) {
		case 1: return loadFromOtbVer1(itemNode, error, warnings);
		case 2: return loadFromOtbVer2(itemNode, error, warnings);
		case 3: return loadFromOtbVer3(itemNode, error, warnings);
	}
	return true;
}

bool IOMapOTMM::loadMap(Map& map, NodeFileReadHandle& f, const FileName& identifier, bool showdialog) {
	BinaryNode* root = f.getRootNode();
	if(!root) {
		error(wxT("Could not read root node."));
		return false;
	}
	root->skip(1); // Skip the type byte

	uint8_t u8;
	uint16_t u16;
	uint32_t u32;

	if(!root->getU32(u32) || u32 != 1) { // Version
		error(wxT("Unsupported or damaged map version."));
		return false;
	}

	if(!root->getU16(u16)) {
		error(wxT("Could not read root header."));
		return false;
	}
	map.width = u16;
	if(!root->getU16(u16)) {
		error(wxT("Could not read root header."));
		return false;
	}
	map.height = u16;

	if(!root->getU32(u32) || u32 > (unsigned long)item_db.MajorVersion) { // OTB major version
		if(queryUser(wxT("Map error"), wxT("The loaded map appears to be a items.otb format that deviates from the items.otb loaded by the editor. Do you still want to attempt to load the map?"))) {
			warning(wxT("Unsupported or damaged map version"));
		} else {
			error(wxT("Outdated items.otb, could not load map."));
			return false;
		}
	}

	if(!root->getU32(u32) || u32 > (unsigned long)item_db.MinorVersion) { // OTB minor version
		warning(wxT("The editor needs an updated items.otb version."));
	}

	BinaryNode* mapHeaderNode = root->getChild();
	if(mapHeaderNode == NULL || !mapHeaderNode->getByte(u8) || u8 != OTMM_MAP_DATA) {
		error(wxT("Could not get root child node. Cannot recover from fatal error!"));
		return false;
	}

	
	int nodes_loaded = 0;

	BinaryNode* mapNode = mapHeaderNode->getChild();
	if(mapNode) do {
		++nodes_loaded;
		if(showdialog && nodes_loaded % 15 == 0) {
			gui.SetLoadDone(int(100.0 * f.tell() / f.size()));
		}
		uint8_t node_type;
		if(!mapNode->getByte(node_type)) {
			warning(wxT("Invalid map node"));
			continue;
		}
		switch(node_type) {
			case OTMM_EDITOR: {
			} break;
			case OTMM_DESCRIPTION: {
				std::string desc;
				mapNode->getString(desc);
				map.setMapDescription(desc);
			} break;
			case OTMM_TILE_DATA: {
				BinaryNode* tileNode = mapNode->getChild();
				if(tileNode) do {
					Tile* tile = NULL;
					uint8_t tile_type;
					if(!tileNode->getByte(tile_type)) {
						warning(wxT("Invalid tile type"));
						continue;
					}
					if(tile_type != OTMM_TILE && tile_type != OTMM_HOUSETILE) {
						warning(wxT("Unknown type of tile node"));
						continue;
					}

					uint16_t x_offset, y_offset;
					uint8_t z_offset;
					if(!tileNode->getU16(x_offset) ||
							!tileNode->getU16(y_offset) ||
							!tileNode->getU8(z_offset)
						)
					{
						warning(wxT("Could not read position of tile"));
						continue;
					}
					const Position pos(x_offset, y_offset, z_offset);
					
					if(map.getTile(pos)) {
						warning(wxT("Duplicate tile at %d:%d:%d, discarding duplicate"), pos.x, pos.y, pos.z);
						continue;
					}
					
//.........这里部分代码省略.........