Date.cpp

/*
** libutil++
** $Id: Date.cpp 1911 2017-09-02 17:37:35Z sella $
** Copyright (c) 2011-2016 Digital Genesis, LLC. All Rights Reserved.
** Released under the LGPL Version 2.1 License.
** http://www.digitalgenesis.com
*/

static const char rcsid[] __attribute__((used)) = "$Id: Date.cpp 1911 2017-09-02 17:37:35Z sella $";

#include "Date.h"
#include "../util/CommonMacro.h"

using namespace sella::variant;

Date::Date() throw () : Nullable(std::make_shared<int64_t>(0)) { }

Date::Date(const std::string &value) throw (TypeCastException) : Nullable() {
        boost::smatch   matcher;
        struct tm               stamp;

        if (boost::regex_match(value, matcher, Date::Pattern())) {
                memset(&stamp, 0, sizeof(stamp));

                stamp.tm_year = strtol(matcher[1].str().c_str(), NULL, 10) - 1900;
                stamp.tm_mon  = strtol(matcher[2].str().c_str(), NULL, 10) - 1;
                stamp.tm_mday = strtol(matcher[3].str().c_str(), NULL, 10);

                this->value = std::make_shared<int64_t>(mktime(&stamp) * 1000000LL);
        } else {
                THROW(TypeCastException, "unable to cast '%s' to a date value", value.c_str());
        }
}

Date::Date(int64_t value) throw () : Nullable(std::make_shared<int64_t>(value)) { }

Date::Date(const Date &other) throw () : Nullable() {
        if (this != &other) {
                if (!other.isNull()) {
                        if (isNull()) {
                                this->value = std::make_shared<int64_t>(other.getUsec());
                        } else {
                                *std::static_pointer_cast<int64_t>(this->value) = *std::static_pointer_cast<int64_t>(other.value);
                        }
                } else {
                        this->value.reset();
                }
        }
}

Date::~Date() throw () { }

bool Date::operator==(const Date &other) const throw () {
        return (*std::static_pointer_cast<int64_t>(this->value) == *std::static_pointer_cast<int64_t>(other.value));
}

bool Date::operator!=(const Date &other) const throw () {
        return !(*this == other);
}

bool Date::operator>(const Date &other) const throw () {
        return (*std::static_pointer_cast<int64_t>(this->value) > *std::static_pointer_cast<int64_t>(other.value));
}

bool Date::operator<(const Date &other) const throw () {
        return (*std::static_pointer_cast<int64_t>(this->value) < *std::static_pointer_cast<int64_t>(other.value));
}

Date& Date::operator=(const Date &other) throw () {
        if (this != &other) {
                if (!other.isNull()) {
                        if (isNull()) {
                                this->value = std::make_shared<int64_t>(other.getUsec());
                        } else {
                                *std::static_pointer_cast<int64_t>(this->value) = *std::static_pointer_cast<int64_t>(other.value);
                        }
                } else {
                        this->value.reset();
                }
        }

        return *this;
}

Date& Date::operator+=(int64_t value) throw () {
        (*std::static_pointer_cast<int64_t>(this->value)) += value;

        return *this;
}

Date& Date::operator-=(int64_t value) throw () {
        (*std::static_pointer_cast<int64_t>(this->value)) -= value;

        return *this;
}

Date& Date::operator*=(int64_t value) throw () {
        (*std::static_pointer_cast<int64_t>(this->value)) *= value;

        return *this;
}

Date& Date::operator/=(int64_t value) throw () {
        (*std::static_pointer_cast<int64_t>(this->value)) /= value;

        return *this;
}

Date& Date::operator^=(int64_t value) throw () {
        (*std::static_pointer_cast<int64_t>(this->value)) = pow((*std::static_pointer_cast<int64_t>(this->value)), value);

        return *this;
}

Date& Date::operator%=(int64_t value) throw () {
        (*std::static_pointer_cast<int64_t>(this->value)) %= value;

        return *this;
}

Date& Date::operator&=(int64_t value) throw () {
        (*std::static_pointer_cast<int64_t>(this->value)) &= value;

        return *this;
}

Date& Date::operator|=(int64_t value) throw () {
        (*std::static_pointer_cast<int64_t>(this->value)) |= value;

        return *this;
}

int64_t Date::getUsec() const throw (UnsupportedOperatorException) {
        if (isNull()) {
                THROW(UnsupportedOperatorException, "unable to take reference of null value");
        }

        return *std::static_pointer_cast<int64_t>(this->value);
}

void Date::msgpack(sella::util::MessagePack &mpack, uint32_t &offset) const throw (TypeCastException) {
        uint32_t c;

        if (UNLIKELY(this->isNull())) {
                c = mpack.append(offset);
        } else {
                c = mpack.append(offset, this->str(JSON));
        }

        offset += c;

        if (UNLIKELY(c == 0)) {
                THROW(TypeCastException, "Failed to append '%s' at offset %d (buffer length: %d)", str(JSON).c_str(), offset, mpack.length());
        }
}

void Date::msgpackBufferSize(size_t &size) const throw () {
        if (UNLIKELY(isNull())) {
                size += 1;

                return;
        }

        size += 9;
}

std::string Date::str(int type) const throw () {
        if (UNLIKELY(this->isNull())) {
                return "null";
        }

        char                    buffer[4096];   
        time_t          epoch = this->getUsec() / 1000000LL;
        struct tm       human;

        gmtime_r(&epoch, &human);
        snprintf(buffer, sizeof(buffer), "%04d-%02d-%02d", human.tm_year + 1900, human.tm_mon + 1, human.tm_mday);

        return buffer;
}

bool Date::isType(const char *value, size_t size) throw () {
        return (size == 10 && value[4] == '-' && value[7] == '-' && boost::regex_match(std::string(value, size), Pattern()));
}

/*
** vim: noet ts=3 sw=3
*/