#include <string>
#include <sstream>
#include <iomanip>
//#include <stdlib.h>     /* for abs() */
#include <cmath>

// strip off the directory part of a path, leaving just
// the basic filename
std::string basename(const std::string path){
  size_t where = path.rfind("/");
  if (where != std::string::npos) return path.substr(1+where);
  return path;
}

////////////////
// little utility to help with argument parsing:
//
int prefix(const std::string shorter, const std::string longer){
  return shorter == longer.substr(0, shorter.length());
}

///////////////
// print a time as (-)hh:mm:ss
//
std::string time_out(const int _ttt){
using namespace std;
  int ttt(abs(_ttt));
  int sec(ttt % 60);
  int min((ttt / 60) % 60);
  int hr(ttt / 3600);
  stringstream foo;
  int didsome(0);
  if (_ttt < 0) foo << "-";
  if (hr) {
    foo << hr << ":";
    didsome++;
  }
  if (didsome || min){
    foo << setw(didsome?2:1) << setfill('0') << min << ":";
    didsome++;
  }
  foo << setw(didsome?2:1) << setfill('0') << sec;
  return foo.str();
}