Class TDate

util/draft/date.h:15–88

Local date (without time zone)

// Local date (without time zone)
class TDate {
    // XXX: wrong: must store number of days since epoch
    time_t Timestamp;

public:
    TDate()
        : Timestamp(0)
    {
    }

    // XXX: wrong. Should be replace with two methods: TodayGmt() and TodayLocal()
    static TDate Today() {
        return TDate(time(nullptr));
    }

    TDate(const char* yyyymmdd);
    TDate(const TString& yyyymmdd);
    TDate(unsigned year, unsigned month, unsigned monthDay); // month from 01, monthDay from 01
    TDate(const TString& date, const TString& format);

    explicit TDate(time_t t);

    time_t GetStart() const {
        return Timestamp;
    }

    time_t GetStartUTC() const;

    TString ToStroka(const char* format = "%Y%m%d") const;

    TDate& operator++() {
        Timestamp = GetDateStart(Timestamp + 3 * (SECONDS_IN_DAY / 2));
        return *this;
    }

    TDate& operator--() {
        Timestamp = GetDateStart(Timestamp - SECONDS_IN_DAY / 2);
        return *this;
    }

    TDate& operator+=(unsigned days) {
        Timestamp = GetDateStart(Timestamp + days * SECONDS_IN_DAY + SECONDS_IN_DAY / 2);
        return *this;
    }

    TDate& operator-=(unsigned days) {
        Timestamp = GetDateStart(Timestamp - days * SECONDS_IN_DAY + SECONDS_IN_DAY / 2);
        return *this;
    }

    TDate operator+(unsigned days) const {
        return TDate(Timestamp + days * SECONDS_IN_DAY + SECONDS_IN_DAY / 2);
    }

    TDate operator-(unsigned days) const {
        return TDate(Timestamp - days * SECONDS_IN_DAY + SECONDS_IN_DAY / 2);
    }