Time.h

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// Copyright Onix Solutions Limited [OnixS]. All rights reserved.
//
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// protected by copyright law and international copyright treaties.
//
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// agreements granting a non-assignable, non-transferable and non-exclusive license
// to use the software for it's own data processing purposes under the terms defined
// in the Agreement.
//
// Except as otherwise granted within the terms of the Agreement, copying or
// reproduction of any part of this source code or associated reference material
// to any other location for further reproduction or redistribution, and any
// amendments to this copyright notice, are expressly prohibited.
//
// Any reproduction or redistribution for sale or hiring of the Software not in
// accordance with the terms of the Agreement is a violation of copyright law.
//
 
#pragma once
 
#include <algorithm>
#include <stdexcept>
 
#include <OnixS/CME/MDH/String.h>
#include <OnixS/CME/MDH/Integral.h>
 
ONIXS_CMEMDH_NAMESPACE_BEGIN
ONIXS_CMEMDH_DATA_PACKING_BEGIN(1)
 

struct ONIXS_CMEMDH_LTWT TimeTraits
{
    static Int64 nanosecondsPerDay()
    {
        return 86400000000000ll;
    }

    static Int64 nanosecondsPerHour()
    {
        return 3600000000000ll;
    }

    static Int64 nanosecondsPerMinute()
    {
        return 60000000000ll;
    }

    static Int32 nanosecondsPerSecond()
    {
        return 1000000000;
    }

    static Int32 nanosecondsPerMillisecond()
    {
        return 1000000;
    }

    static Int32 nanosecondsPerMicrosecond()
    {
        return 1000;
    }

    static Int32 hoursPerDay()
    {
        return 24;
    }

    static Int32 minutesPerHour()
    {
        return 60;
    }

    static Int32 secondsPerMinute()
    {
        return 60;
    }

    static Int32 millisecondsPerSecond()
    {
        return 1000;
    }

    static Int32 microsecondsPerSecond()
    {
        return 1000000;
    }
};

class ONIXS_CMEMDH_LTWT TimeSpan
{
public:
    typedef Int64 Ticks;

    typedef Int32 Days;

    typedef Int32 Hours;

    typedef Int32 Minutes;

    typedef Int32 Seconds;

    typedef Int32 Milliseconds;

    typedef Int32 Microseconds;

    typedef Int32 Nanoseconds;

    explicit TimeSpan(Ticks ticks = 0)
        : ticks_(ticks)
    {
    }

    TimeSpan(Days days, Hours hours, Minutes minutes, Seconds seconds, Nanoseconds nanoseconds)
        : ticks_(
            static_cast<Ticks>(days) * TimeTraits::nanosecondsPerDay()
            + static_cast<Ticks>(hours) * TimeTraits::nanosecondsPerHour()
            + static_cast<Ticks>(minutes) * TimeTraits::nanosecondsPerMinute()
            + static_cast<Ticks>(seconds) * TimeTraits::nanosecondsPerSecond() + nanoseconds
        )
    {
    }

    TimeSpan(Hours hours, Minutes minutes, Seconds seconds, Nanoseconds nanoseconds)
        : ticks_(
            static_cast<Ticks>(hours) * TimeTraits::nanosecondsPerHour()
            + static_cast<Ticks>(minutes) * TimeTraits::nanosecondsPerMinute()
            + static_cast<Ticks>(seconds) * TimeTraits::nanosecondsPerSecond() + nanoseconds
        )
    {
    }

    TimeSpan(const TimeSpan& other)
        : ticks_(other.ticks_)
    {
    }

    Days days() const
    {
        return static_cast<Days>(ticks_ / TimeTraits::nanosecondsPerDay());
    }

    Hours hours() const
    {
        return static_cast<Hours>((ticks_ / TimeTraits::nanosecondsPerHour()) % TimeTraits::hoursPerDay());
    }

    Int32 minutes() const
    {
        return static_cast<Minutes>((ticks_ / TimeTraits::nanosecondsPerMinute()) % TimeTraits::minutesPerHour());
    }

    Int32 seconds() const
    {
        return static_cast<Seconds>((ticks_ / TimeTraits::nanosecondsPerSecond()) % TimeTraits::secondsPerMinute());
    }

    Milliseconds milliseconds() const
    {
        return static_cast<Milliseconds>(
            (ticks_ / TimeTraits::nanosecondsPerMillisecond()) % TimeTraits::millisecondsPerSecond()
        );
    }

    Microseconds microseconds() const
    {
        return static_cast<Microseconds>(
            (ticks_ / TimeTraits::nanosecondsPerMicrosecond()) % TimeTraits::microsecondsPerSecond()
        );
    }

    Nanoseconds nanoseconds() const
    {
        return static_cast<Nanoseconds>(ticks_ % TimeTraits::nanosecondsPerSecond());
    }

    Ticks ticks() const
    {
        return ticks_;
    }

    TimeSpan& operator+=(const TimeSpan& other)
    {
        ticks_ += other.ticks_;
 
        return *this;
    }

    TimeSpan& operator-=(const TimeSpan& other)
    {
        ticks_ -= other.ticks_;
 
        return *this;
    }

    TimeSpan& operator=(const TimeSpan& other)
    {
        ticks_ = other.ticks_;
 
        return *this;
    }

    void swap(TimeSpan& other)
    {
        std::swap(ticks_, other.ticks_);
    }
 
private:
    Ticks ticks_;
};

inline bool operator==(const TimeSpan& left, const TimeSpan& right)
{
    return left.ticks() == right.ticks();
}

inline bool operator!=(const TimeSpan& left, const TimeSpan& right)
{
    return left.ticks() != right.ticks();
}

inline bool operator<(const TimeSpan& left, const TimeSpan& right)
{
    return left.ticks() < right.ticks();
}

inline bool operator>(const TimeSpan& left, const TimeSpan& right)
{
    return left.ticks() > right.ticks();
}
 
// TimeSpan serialization.
 
// Serializes timespan according to HH:MM:SS pattern.
ONIXS_CMEMDH_EXPORTED
void toStrAsHHMMSS(std::string&, TimeSpan);
 
// Serializes timespan according to HH:MM:SS.sss pattern.
ONIXS_CMEMDH_EXPORTED
void toStrAsHHMMSSmsec(std::string&, TimeSpan);
 
// Serializes timespan according to D.HH:MM:SS.sssssssss pattern.
ONIXS_CMEMDH_EXPORTED
void toStrAsSDHHMMSSnsec(std::string&, TimeSpan);

struct ONIXS_CMEMDH_LTWT TimeSpanFormat
{
    enum Enum
    {
        HHMMSS,

        HHMMSSmsec,

        SDHHMMSSnsec
    };
};

inline void toStr(std::string& str, TimeSpan timeSpan, TimeSpanFormat::Enum format = TimeSpanFormat::SDHHMMSSnsec)
{
    switch (format)
    {
    case TimeSpanFormat::HHMMSS:
        toStrAsHHMMSS(str, timeSpan);
        break;
 
    case TimeSpanFormat::HHMMSSmsec:
        toStrAsHHMMSSmsec(str, timeSpan);
        break;
 
    case TimeSpanFormat::SDHHMMSSnsec:
        toStrAsSDHHMMSSnsec(str, timeSpan);
        break;
 
    default:
    {
        throw std::invalid_argument("Unknown timespan format pattern specified. ");
    }
    }
}

inline std::string toStr(TimeSpan timeSpan, TimeSpanFormat::Enum format = TimeSpanFormat::SDHHMMSSnsec)
{
    std::string str;
 
    toStr(str, timeSpan, format);
 
    return str;
}

struct ONIXS_CMEMDH_LTWT Month
{
    typedef UInt32 Base;

    enum Enum
    {
        January = 1,
        February,
        March,
        April,
        May,
        June,
        July,
        August,
        September,
        October,
        November,
        December
    };
};

class ONIXS_CMEMDH_LTWT Timestamp
{
public:
    typedef UInt64 Ticks;

    typedef UInt32 Year;

    typedef OnixS::CME::MDH::Month::Enum Month;

    typedef UInt32 Day;

    typedef UInt32 Hour;

    typedef UInt32 Minute;

    typedef UInt32 Second;

    typedef UInt32 Millisecond;

    typedef UInt32 Microsecond;

    typedef UInt32 Nanosecond;

    explicit Timestamp(Ticks ticks = 0)
        : sinceEpoch_(ticks)
    {
    }

    Timestamp(
        Year year,
        Month month,
        Day day,
        Hour hour = 0,
        Minute minute = 0,
        Second second = 0,
        Nanosecond nanosecond = 0
    )
        : sinceEpoch_(toTicks(year, month, day, hour, minute, second, nanosecond))
    {
    }

    Year year() const
    {
        Year year;
        Month month;
        Day day;
 
        toDate(sinceEpoch_, year, month, day);
 
        return year;
    }

    Month month() const
    {
        Year year;
        Month month;
        Day day;
 
        toDate(sinceEpoch_, year, month, day);
 
        return month;
    }

    Day day() const
    {
        Year year;
        Month month;
        Day day;
 
        toDate(sinceEpoch_, year, month, day);
 
        return day;
    }

    Hour hour() const
    {
        return static_cast<Hour>(time().hours());
    }

    Minute minute() const
    {
        return static_cast<Minute>(time().minutes());
    }

    Second second() const
    {
        return static_cast<Second>(time().seconds());
    }

    Millisecond millisecond() const
    {
        return static_cast<Millisecond>(time().milliseconds());
    }

    Microsecond microsecond() const
    {
        return static_cast<Microsecond>(time().microseconds());
    }

    Nanosecond nanosecond() const
    {
        return static_cast<Nanosecond>(time().nanoseconds());
    }

    Timestamp date() const
    {
        return Timestamp(sinceEpoch_ - sinceEpoch_ % TimeTraits::nanosecondsPerDay());
    }

    TimeSpan time() const
    {
        return TimeSpan(sinceEpoch_ % TimeTraits::nanosecondsPerDay());
    }

    Ticks sinceEpoch() const
    {
        return sinceEpoch_;
    }

    void swap(Timestamp& other)
    {
        std::swap(sinceEpoch_, other.sinceEpoch_);
    }
 
private:
    // Time interval in nanoseconds since the 01-01-1970.
    Ticks sinceEpoch_;
 
    // Converts structured date-time into ticks.
    ONIXS_CMEMDH_LTWT_EXPORTED
    static Ticks toTicks(Year, Month, Day, Hour, Minute, Second, Nanosecond);
 
    // Extracts date components from ticks.
    ONIXS_CMEMDH_LTWT_EXPORTED
    static void toDate(Ticks, Year&, Month&, Day&);
};

inline bool operator==(const Timestamp& left, const Timestamp& right)
{
    return (left.sinceEpoch() == right.sinceEpoch());
}

inline bool operator!=(const Timestamp& left, const Timestamp& right)
{
    return (left.sinceEpoch() != right.sinceEpoch());
}

inline bool operator<(const Timestamp& left, const Timestamp& right)
{
    return (left.sinceEpoch() < right.sinceEpoch());
}

inline bool operator<=(const Timestamp& left, const Timestamp& right)
{
    return (left.sinceEpoch() <= right.sinceEpoch());
}

inline bool operator>(const Timestamp& left, const Timestamp& right)
{
    return (left.sinceEpoch() > right.sinceEpoch());
}

inline bool operator>=(const Timestamp& left, const Timestamp& right)
{
    return (left.sinceEpoch() >= right.sinceEpoch());
}

inline Timestamp operator+(const Timestamp& timestamp, const TimeSpan& timeSpan)
{
    return Timestamp(timestamp.sinceEpoch() + timeSpan.ticks());
}

inline Timestamp operator-(const Timestamp& timestamp, const TimeSpan& timeSpan)
{
    return Timestamp(timestamp.sinceEpoch() - timeSpan.ticks());
}

inline TimeSpan operator-(const Timestamp& left, const Timestamp& right)
{
    return TimeSpan(left.sinceEpoch() - right.sinceEpoch());
}
 
// Serialization.

ONIXS_CMEMDH_EXPORTED
void toStrAsYYYYMMDD(std::string&, Timestamp);

ONIXS_CMEMDH_EXPORTED
void toStrAsYYYYMMDDHHMMSS(std::string&, Timestamp);

ONIXS_CMEMDH_EXPORTED
void toStrAsYYYYMMDDHHMMSSmsec(std::string&, Timestamp);

ONIXS_CMEMDH_EXPORTED
void toStrAsYYYYMMDDHHMMSSnsec(std::string&, Timestamp);

struct ONIXS_CMEMDH_LTWT TimestampFormat
{
    enum Enum
    {
        YYYYMMDD,

        YYYYMMDDHHMMSS,

        YYYYMMDDHHMMSSmsec,

        YYYYMMDDHHMMSSnsec
    };
};

inline void
toStr(std::string& str, Timestamp timestamp, TimestampFormat::Enum format = TimestampFormat::YYYYMMDDHHMMSSnsec)
{
    switch (format)
    {
    case TimestampFormat::YYYYMMDD:
        toStrAsYYYYMMDD(str, timestamp);
        break;
 
    case TimestampFormat::YYYYMMDDHHMMSS:
        toStrAsYYYYMMDDHHMMSS(str, timestamp);
        break;
 
    case TimestampFormat::YYYYMMDDHHMMSSmsec:
        toStrAsYYYYMMDDHHMMSSmsec(str, timestamp);
        break;
 
    case TimestampFormat::YYYYMMDDHHMMSSnsec:
        toStrAsYYYYMMDDHHMMSSnsec(str, timestamp);
        break;
 
    default:
    {
        throw std::invalid_argument("Unknown timestamp format pattern specified. ");
    }
    }
}

inline std::string toStr(Timestamp timestamp, TimestampFormat::Enum format = TimestampFormat::YYYYMMDDHHMMSSnsec)
{
    std::string str;
 
    toStr(str, timestamp, format);
 
    return str;
}

ONIXS_CMEMDH_EXPORTED
bool fromStr(Timestamp&, const Char*, size_t);
 
inline bool fromStr(Timestamp& ts, const std::string& str)
{
    return fromStr(ts, str.c_str(), str.size());
}
 
ONIXS_CMEMDH_DATA_PACKING_END
ONIXS_CMEMDH_NAMESPACE_END