#include "trim.h"
#include <string>
using namespace std;

string trim(const string & orig)
{
    const char ws[] = " \t\r\n\v\f";
    size_t first = orig.find_first_not_of(ws);
    size_t last = orig.find_last_not_of(ws);
    if (first == string::npos || last == string::npos)
    {
        return "";
    }
    return string(orig, first, last - first + 1);
}