Method CreateRequestMapping

src/async_handler.cpp:142–214

}

void AsyncHandler::CreateRequestMapping(const std::string& file) {
#ifdef EMSCRIPTEN
	auto f = FileFinder::Game().OpenInputStream(file);
	if (!f) {
		Output::Error("Emscripten: Reading index.json failed");
		return;
	}

	json j = json::parse(f, nullptr, false);
	if (j.is_discarded()) {
		Output::Error("Emscripten: index.json is not a valid JSON file");
		return;
	}

	if (j.contains("metadata") && j["metadata"].is_object()) {
		const auto& metadata = j["metadata"];
		if (metadata.contains("version") && metadata["version"].is_number()) {
			index_version = metadata["version"].get<int>();
		}
	}

	Output::Debug("Parsing index.json version {}", index_version);

	if (index_version <= 1) {
		// legacy format
		for (const auto& value : j.items()) {
			file_mapping[value.key()] = value.value().get<std::string>();
		}
	} else {
		using fn = std::function<void(const json&, const std::string&)>;
		fn parse = [&] (const json& obj, const std::string& path) {
			std::string dirname;
			if (obj.contains("_dirname") && obj["_dirname"].is_string()) {
				dirname = obj["_dirname"].get<std::string>();
			}
			dirname = FileFinder::MakePath(path, dirname);

			for (const auto& value : obj.items()) {
				const auto& second = value.value();
				if (second.is_object()) {
					parse(second, dirname);
				} else if (second.is_string()){
					file_mapping[FileFinder::MakePath(Utils::LowerCase(dirname), value.key())] = FileFinder::MakePath(dirname, second.get<std::string>());
				}
			}
		};

		if (j.contains("cache") && j["cache"].is_object()) {
			parse(j["cache"], "");
		}

		// Create some empty DLL files. Engine & patch detection depend on them.
		for (const auto& s : {"harmony.dll", "ultimate_rt_eb.dll", "dynloader.dll", "accord.dll"}) {
			auto it = file_mapping.find(s);
			if (it != file_mapping.end()) {
				FileFinder::Game().OpenOutputStream(s);
			}
		}