Chris, the Young One (hedgee) wrote,
Chris, the Young One
hedgee

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Celebrating the billennium

The time has come. Finally, today, time_t will reach one billion. And there will be celebration indeed, among Unix fans everywhere!

Here's a countdown program in C++ under Unix, just to be 1337. :-) Not tested yet, sadly, as I don't have a standard-conforming C++ implementation on my machine yet. (Compiling gcc 3.0.1 now, but I don't think it'll complete in time.)


#include <ctime>
#include <iostream>
#include <locale>
#include <unistd.h>

/*
This bit is based on Appendix D of ``The C++ Programming Language'',
special edition, by Bjarne Stroustrup.
*/
template<typename Ch, typename Tr>
std::basic_ostream<Ch, Tr>&
operator<<(std::basic_ostream<Ch, Tr>& s, std::tm const& t)
{
        std::basic_ostream<Ch, Tr>::sentry guard(s);
        if (!guard)
                return s;
        try {
                if (std::use_facet<std::time_put<char> >(s.getloc()).put(s,
                    s, s.fill(), &t, 'X').failed())
                        s.setstate(std::ios_base::failbit);
        } catch (...) {
                try {
                        s.setstate(std::ios_base::badbit);
                } catch (...) {}
                if (s.exceptions() & std::ios_base::badbit)
                        throw;
        }
        return s;
}

int
main(int, char**)
{
        while (!sleep(1)) {
                std::time_t count = 1000000000 - std::time(0);
                std::cout << '\r' << *std::gmtime(&count) << std::flush;
        }
        return 0;
}
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