C++ (Cpp) Duration::addHours示例

Duration Duration::fromString(const QString &s, Format format, bool *ok) {
    if (ok) *ok = false;
    QRegExp matcher;
    Duration tmp;
    switch (format) {
        case Format_Hour: {
            matcher.setPattern("^(\\d*)h(\\d*)m$" );
            int pos = matcher.indexIn(s);
            if (pos > -1) {
                tmp.addHours(matcher.cap(1).toUInt());
                tmp.addMinutes(matcher.cap(2).toUInt());
                if (ok) *ok = true;
            }
            break;
        }
        case Format_DayTime: {
            matcher.setPattern("^(\\d*) (\\d*):(\\d*):(\\d*)\\.(\\d*)$" );
            int pos = matcher.indexIn(s);
            if (pos > -1) {
                tmp.addDays(matcher.cap(1).toUInt());
                tmp.addHours(matcher.cap(2).toUInt());
                tmp.addMinutes(matcher.cap(3).toUInt());
                tmp.addSeconds(matcher.cap(4).toUInt());
                tmp.addMilliseconds(matcher.cap(5).toUInt());
                if (ok) *ok = true;
            }
            break;
        }
        case Format_HourFraction: {
            // should be in double format
            bool res;
            double f = QLocale().toDouble(s, &res);
            if (ok) *ok = res;
            if (res) {
                return Duration((qint64)(f)*3600*1000);
            }
            break;
        }
        default:
            qFatal("Unknown format");
            break;
    }
    return tmp;
}