Function validateModuleFile

src/Interpreters/WasmModuleManager.cpp:113–133

}

static std::expected<String, PreformattedMessage> validateModuleFile(const DiskPtr & user_scripts_disk, const String & path)
{
    std::filesystem::path file_path(path);

    const auto & file_name = file_path.filename().string();

    if (!endsWith(file_name, FILE_EXTENSION))
        return formatUnexpected("Unexpected file extension '{}', expected '{}'", file_path.extension().string(), FILE_EXTENSION);

    ReadSettings read_settings;
    auto read_buf = user_scripts_disk->readFile(path, read_settings);
    std::string file_header(16, '\0');
    size_t n = read_buf->read(file_header.data(), file_header.size());
    if (n != file_header.size())
        return formatUnexpected("File '{}' is too small to be a valid WebAssembly module", path);

    auto module_name = file_name.substr(0, file_name.size() - strlen(FILE_EXTENSION));
    if (auto res = checkValidWasmCode(module_name, file_header); !res)
        return std::unexpected(std::move(res.error()));
    return module_name;
}

static std::unique_ptr<WebAssembly::IWasmEngine> createEngine(std::string_view engine_name)
{