Interval.cpp

/*
** libutil++
** $Id: Interval.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: Interval.cpp 1911 2017-09-02 17:37:35Z sella $";

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

using namespace sella::variant;

Interval::Interval() throw () : Nullable(std::make_shared<uint64_t>(0)) { }

Interval::Interval(const std::string &value) throw (TypeCastException) : Nullable() {
        boost::smatch   matcher;

        if (boost::regex_match(value, matcher, Interval::Pattern())) {
                int64_t usec;

                try {
                        usec = std::stoll(matcher[1].str().c_str());
                } catch (std::invalid_argument &e) {
                        THROW(TypeCastException, "unable to cast '%s' to an interval value (invalid string)", value.c_str());
                } catch (std::out_of_range &e) {
                        THROW(TypeCastException, "unable to cast '%s' to an interval value (overflow/underflow)", value.c_str());
                }

                switch (matcher[2].str().c_str()[0]) {
                        case 'd':
                                usec *= 86400000000LL;
                                break;

                        case 'h':
                                usec *= 3600000000LL;
                                break;

                        case 'm':
                                usec *= 60000000LL;
                                break;

                        case 's':
                                usec *= 1000000LL;
                                break;

                        case 'u':
                                break;

                        default:
                                THROW(TypeCastException, "unable to cast '%s' to an interval value", value.c_str());
                }

                this->value = std::make_shared<uint64_t>(usec);
        } else {
                THROW(TypeCastException, "unable to cast '%s' to an interval value", value.c_str());
        }
}

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

Interval::Interval(const Interval &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();
                }
        }
}

Interval::~Interval() throw () { }

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

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

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

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

Interval& Interval::operator=(const Interval &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;
}

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

        return *this;
}

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

        return *this;
}

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

        return *this;
}

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

        return *this;
}

Interval& Interval::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;
}

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

        return *this;
}

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

        return *this;
}

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

        return *this;
}

int64_t Interval::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 Interval::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 Interval::msgpackBufferSize(size_t &size) const throw () {
        if (UNLIKELY(isNull())) {
                size += 1;

                return;
        }

        size += 9;
}

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

        char            buffer[4096];
        int64_t usec = this->getUsec();

        if ((usec % 3600000000LL) == 0) {
                snprintf(buffer, sizeof(buffer), "%lldh", usec % 3600000000LL);
        } else if ((usec % 60000000LL) == 0) {
                snprintf(buffer, sizeof(buffer), "%lldm", usec % 60000000LL);
        } else if ((usec % 1000000LL) == 0) {
                snprintf(buffer, sizeof(buffer), "%llds", usec % 1000000LL);
        } else {
                snprintf(buffer, sizeof(buffer), "%" PRId64 "u", usec);
        }

        return buffer;
}

bool Interval::isType(const char *value, size_t size) throw () {
        return (size > 1 && (value[size - 1] == 'd' || value[size - 1] == 'h' || value[size - 1] == 'm' || value[size - 1] == 's' || value[size - 1] == 'u') && boost::regex_match(std::string(value, size), Pattern()));
}

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