#include <iostream>
#include <string>
#include <sys/timeb.h>

/*!
  Test on appeand and operator +.
  case 1: +
  case 2: append()
*/
void test_str_append()
{
  std::string firstlevel ("edu");
  std::string secondlevel ("chem.brandeis");
  std::string dir ("yanglingfa");
  std::string scheme ("http://");
  std::string url;
  std::string u;

  struct timeb tb0, tb1, tb2;
  size_t i1(100000);

  ::ftime(&tb0);  
  for (size_t i = 0; i < i1; ++ i) {
    url = scheme + "hopf." + secondlevel + '.' + firstlevel + '/' + dir;
  }
  ::ftime(&tb1);
  for (size_t i = 0; i < i1; ++ i) {
    u = scheme;
    u.append("hopf.");
    u.append(secondlevel);
    u.append(1, '.');
    u.append(firstlevel);
    u.append(1, '/');
    u.append(dir);
  }
  ::ftime(&tb2);

  time_t diff1 = (tb1.time - tb0.time)*1000 + (tb1.millitm - tb0.millitm);
  time_t diff2 = (tb2.time - tb1.time)*1000 + (tb2.millitm - tb1.millitm);
  double ratio = diff1/(double)diff2;
#ifdef NDEBUG
  std::cout << "Release - ";
#else
  std::cout << "Debug   - ";
#endif
  std::cout << "Time spend: operator +()/append() =" << diff1 << "/" << diff2 << "\t= " << ratio << std::endl;
}

int main()
{
  test_str_append();
  return 0;
}