Function printUsage

tools/ipc_codegen/ipc_codegen.cpp:1099–1105

constexpr const char* kVersion = "ipc_codegen 1.0.0";

void printUsage(std::FILE* out) {
    std::fprintf(out,
        "usage: ipc_codegen [options] <input.steamd>...\n"
        "  --cpp_out=DIR   write generated <name>.gen.h into DIR (default: .)\n"
        "  --version       print version and exit\n"
        "  -h, --help      print this help and exit\n");
}

std::string stem(const std::string& path) {
    const size_t slash = path.find_last_of("/\\");