C++ PropStream::readStruct方法代码示例

bool IOMap::loadMap(Map* map, const std::string& identifier)
{
	int64_t start = OTSYS_TIME();

	FileLoader f;
	if (!f.openFile(identifier.c_str(), "OTBM")) {
		std::ostringstream ss;
		ss << "Could not open the file " << identifier << '.';
		setLastErrorString(ss.str());
		return false;
	}

	uint32_t type;
	PropStream propStream;

	NODE root = f.getChildNode(nullptr, type);
	if (!f.getProps(root, propStream)) {
		setLastErrorString("Could not read root property.");
		return false;
	}

	const OTBM_root_header* root_header;
	if (!propStream.readStruct(root_header)) {
		setLastErrorString("Could not read header.");
		return false;
	}

	uint32_t headerVersion = root_header->version;
	if (headerVersion <= 0) {
		//In otbm version 1 the count variable after splashes/fluidcontainers and stackables
		//are saved as attributes instead, this solves alot of problems with items
		//that is changed (stackable/charges/fluidcontainer/splash) during an update.
		setLastErrorString("This map need to be upgraded by using the latest map editor version to be able to load correctly.");
		return false;
	}

	if (headerVersion > 2) {
		setLastErrorString("Unknown OTBM version detected.");
		return false;
	}

	if (root_header->majorVersionItems < 3) {
		setLastErrorString("This map need to be upgraded by using the latest map editor version to be able to load correctly.");
		return false;
	}

	if (root_header->majorVersionItems > Items::dwMajorVersion) {
		setLastErrorString("The map was saved with a different items.otb version, an upgraded items.otb is required.");
		return false;
	}

	if (root_header->minorVersionItems < CLIENT_VERSION_810) {
		setLastErrorString("This map needs to be updated.");
		return false;
	}

	if (root_header->minorVersionItems > Items::dwMinorVersion) {
		std::cout << "[Warning - IOMap::loadMap] This map needs an updated items.otb." << std::endl;
	}

	std::cout << "> Map size: " << root_header->width << "x" << root_header->height << '.' << std::endl;
	map->width = root_header->width;
	map->height = root_header->height;

	NODE nodeMap = f.getChildNode(root, type);
	if (type != OTBM_MAP_DATA) {
		setLastErrorString("Could not read data node.");
		return false;
	}

	if (!f.getProps(nodeMap, propStream)) {
		setLastErrorString("Could not read map data attributes.");
		return false;
	}

	std::string mapDescription;
	std::string tmp;

	uint8_t attribute;
	while (propStream.read<uint8_t>(attribute)) {
		switch (attribute) {
			case OTBM_ATTR_DESCRIPTION:
				if (!propStream.readString(mapDescription)) {
					setLastErrorString("Invalid description tag.");
					return false;
				}
				break;

			case OTBM_ATTR_EXT_SPAWN_FILE:
				if (!propStream.readString(tmp)) {
					setLastErrorString("Invalid spawn tag.");
					return false;
				}

				map->spawnfile = identifier.substr(0, identifier.rfind('/') + 1);
				map->spawnfile += tmp;
				break;

			case OTBM_ATTR_EXT_HOUSE_FILE:
				if (!propStream.readString(tmp)) {
//.........这里部分代码省略.........

FILELOADER_ERRORS Items::loadFromOtb(const std::string& file)
{
	FileLoader f;
	if (!f.openFile(file.c_str(), "OTBI")) {
		return f.getError();
	}

	uint32_t type;
	NODE node = f.getChildNode(NO_NODE, type);

	PropStream props;
	if (f.getProps(node, props)) {
		//4 byte flags
		//attributes
		//0x01 = version data
		uint32_t flags;
		if (!props.read<uint32_t>(flags)) {
			return ERROR_INVALID_FORMAT;
		}

		uint8_t attr;
		if (!props.read<uint8_t>(attr)) {
			return ERROR_INVALID_FORMAT;
		}

		if (attr == ROOT_ATTR_VERSION) {
			uint16_t datalen;
			if (!props.read<uint16_t>(datalen)) {
				return ERROR_INVALID_FORMAT;
			}

			if (datalen != sizeof(VERSIONINFO)) {
				return ERROR_INVALID_FORMAT;
			}

			const VERSIONINFO* vi;
			if (!props.readStruct(vi)) {
				return ERROR_INVALID_FORMAT;
			}

			Items::dwMajorVersion = vi->dwMajorVersion; //items otb format file version
			Items::dwMinorVersion = vi->dwMinorVersion; //client version
			Items::dwBuildNumber = vi->dwBuildNumber; //revision
		}
	}

	if (Items::dwMajorVersion == 0xFFFFFFFF) {
		std::cout << "[Warning - Items::loadFromOtb] items.otb using generic client version." << std::endl;
	} else if (Items::dwMajorVersion != 3) {
		std::cout << "Old version detected, a newer version of items.otb is required." << std::endl;
		return ERROR_INVALID_FORMAT;
	} else if (Items::dwMinorVersion < CLIENT_VERSION_1076) {
		std::cout << "A newer version of items.otb is required." << std::endl;
		return ERROR_INVALID_FORMAT;
	}

	node = f.getChildNode(node, type);
	while (node != NO_NODE) {
		PropStream stream;
		if (!f.getProps(node, stream)) {
			return f.getError();
		}

		uint32_t flags;
		if (!stream.read<uint32_t>(flags)) {
			return ERROR_INVALID_FORMAT;
		}

		uint16_t serverId = 0;
		uint16_t clientId = 0;
		uint16_t speed = 0;
		uint16_t wareId = 0;
		uint8_t lightLevel = 0;
		uint8_t lightColor = 0;
		uint8_t alwaysOnTopOrder = 0;

		uint8_t attrib;
		while (stream.read<uint8_t>(attrib)) {
			uint16_t datalen;
			if (!stream.read<uint16_t>(datalen)) {
				return ERROR_INVALID_FORMAT;
			}

			switch (attrib) {
				case ITEM_ATTR_SERVERID: {
					if (datalen != sizeof(uint16_t)) {
						return ERROR_INVALID_FORMAT;
					}

					if (!stream.read<uint16_t>(serverId)) {
						return ERROR_INVALID_FORMAT;
					}

					if (serverId > 30000 && serverId < 30100) {
						serverId -= 30000;
					}
					break;
				}

				case ITEM_ATTR_CLIENTID: {
//.........这里部分代码省略.........