Using Web IFC C++ to parse IFC files

web-ifc-test.cpp

/*
  Modified from https://github.com/ThatOpen/engine_web-ifc/blob/main/src/cpp/web-ifc-test.cpp
  This is a snippet of code used to properly benchmark Web IFC in C++  
  https://github.com/ThatOpen/engine_web-ifc for loading files and counting doors.
  Unlike the previous code, we count the entire file load process. 
*/
int main(int argc, char* argv[])
{
    std::cout << "Web IFC test" << std::endl;      
    std::cout << "# args = " << argc << std::endl;

    if (argc != 3)
    {
        std::cout << "Incorrect number of arguments " << argc << std::endl;
        return 1;
    }

    std::cout << "Type = " << argv[1] << std::endl;
    std::cout << "File = " << std::filesystem::path(argv[2]).filename() << std::endl;

    auto start = ms();
    std::string content = ReadFile(argv[2]);
    auto time = ms() - start;    

    std::cout << "Loading file took " << time << "ms" << std::endl;
    std::cout << "File is " << content.size() << "bytes" << std::endl;

    struct LoaderSettings {
        bool COORDINATE_TO_ORIGIN = false;
        uint16_t CIRCLE_SEGMENTS = 12;
        uint32_t TAPE_SIZE = 67108864 ; 
        uint32_t MEMORY_LIMIT = 2147483648;
        uint16_t LINEWRITER_BUFFER = 10000;
    };

    LoaderSettings set;
    set.COORDINATE_TO_ORIGIN = true;
    webifc::schema::IfcSchemaManager schemaManager;
    webifc::parsing::IfcLoader loader(set.TAPE_SIZE, set.MEMORY_LIMIT, set.LINEWRITER_BUFFER, schemaManager);

    auto last = ms();
    loader.LoadFile([&](char *dest, size_t sourceOffset, size_t destSize) {
            uint32_t length = std::min(content.size() - sourceOffset, destSize);
            memcpy(dest, &content[sourceOffset], length);
            return length; });
    time = ms() - last;
    std::cout << "Parsing took " << time << "ms" << std::endl;

    last = ms();

    auto typeCode = schemaManager.IfcTypeToTypeCode(argv[1]);
    auto recs = loader.GetExpressIDsWithType(typeCode);

    time = ms() - last;
    std::cout << "Found " << recs.size() << " entities in " << time << "ms" << std::endl;

    time = ms() - start;
    std::cout << "Total time is " << time << "ms" << std::endl;
}