File indexing completed on 2024-05-12 16:42:38

 /*
     SPDX-FileCopyrightText: 2000-2004 Michael Edwardes <mte@users.sourceforge.net>
     SPDX-FileCopyrightText: 2001-2021 Thomas Baumgart <tbaumgart@kde.org>
     SPDX-FileCopyrightText: 2001-2002 Felix Rodriguez <frodriguez@users.sourceforge.net>
     SPDX-FileCopyrightText: 2002-2004 Kevin Tambascio <ktambascio@users.sourceforge.net>
     SPDX-FileCopyrightText: 2005 Ace Jones <acejones@users.sourceforge.net>
     SPDX-FileCopyrightText: 2007-2010 Alvaro Soliverez <asoliverez@gmail.com>
     SPDX-FileCopyrightText: 2011 Carlos Eduardo da Silva <kaduardo@gmail.com>
     SPDX-FileCopyrightText: 2017-2018 Łukasz Wojniłowicz <lukasz.wojnilowicz@gmail.com>
     SPDX-License-Identifier: GPL-2.0-or-later
 */
 
 // make sure, that this is defined before we even include any other header file
 #ifndef __STDC_LIMIT_MACROS
 #define __STDC_LIMIT_MACROS         // force definition of min and max values
 #endif
 
 #include "mymoneymoney.h"
 
 #include <stdint.h>
 #include <gmpxx.h>
 
 // ----------------------------------------------------------------------------
 // QT Includes
 
 #include <QDebug>
 #include <QString>
 
 // ----------------------------------------------------------------------------
 // Project Includes
 
 #include "mymoneyexception.h"
 #include "mymoneyenums.h"
 
 const MyMoneyMoney MyMoneyMoney::ONE = MyMoneyMoney(1, 1);
 const MyMoneyMoney MyMoneyMoney::MINUS_ONE = MyMoneyMoney(-1, 1);
 namespace eMyMoney
 {
 namespace Money {
 
 enum fileVersionE : int {
     FILE_4_BYTE_VALUE = 0,
     FILE_8_BYTE_VALUE,
 };
 
 QChar _thousandSeparator = QLatin1Char(',');
 QChar _decimalSeparator = QLatin1Char('.');
 eMyMoney::Money::signPosition _negativeMonetarySignPosition = PreceedQuantityAndSymbol;
 eMyMoney::Money::signPosition _positiveMonetarySignPosition = PreceedQuantityAndSymbol;
 bool _negativePrefixCurrencySymbol = false;
 bool _positivePrefixCurrencySymbol = false;
 bool _negativeSpaceSeparatesSymbol = true;
 bool _positiveSpaceSeparatesSymbol = true;
 eMyMoney::Money::fileVersionE _fileVersion = fileVersionE::FILE_4_BYTE_VALUE;
 }
 }
 
 MyMoneyMoney MyMoneyMoney::maxValue = MyMoneyMoney(INT64_MAX, 100);
 MyMoneyMoney MyMoneyMoney::minValue = MyMoneyMoney(INT64_MIN, 100);
 MyMoneyMoney MyMoneyMoney::autoCalc = MyMoneyMoney(INT64_MIN + 1, 100);
 
 void MyMoneyMoney::setNegativeSpaceSeparatesSymbol(const bool flag)
 {
     eMyMoney::Money::_negativeSpaceSeparatesSymbol= flag;
 }
 
 void MyMoneyMoney::setPositiveSpaceSeparatesSymbol(const bool flag)
 {
     eMyMoney::Money::_positiveSpaceSeparatesSymbol= flag;
 }
 
 void MyMoneyMoney::setNegativePrefixCurrencySymbol(const bool flag)
 {
     eMyMoney::Money::_negativePrefixCurrencySymbol = flag;
 }
 
 void MyMoneyMoney::setPositivePrefixCurrencySymbol(const bool flag)
 {
     eMyMoney::Money::_positivePrefixCurrencySymbol = flag;
 }
 
 void MyMoneyMoney::setNegativeMonetarySignPosition(const eMyMoney::Money::signPosition pos)
 {
     eMyMoney::Money::_negativeMonetarySignPosition = pos;
 }
 
 eMyMoney::Money::signPosition MyMoneyMoney::negativeMonetarySignPosition()
 {
     return eMyMoney::Money::_negativeMonetarySignPosition;
 }
 
 void MyMoneyMoney::setPositiveMonetarySignPosition(const eMyMoney::Money::signPosition pos)
 {
     eMyMoney::Money::_positiveMonetarySignPosition = pos;
 }
 
 eMyMoney::Money::signPosition MyMoneyMoney::positiveMonetarySignPosition()
 {
     return eMyMoney::Money::_positiveMonetarySignPosition;
 }
 
 void MyMoneyMoney::setThousandSeparator(const QChar &separator)
 {
     if (separator != QLatin1Char(' '))
         eMyMoney::Money::_thousandSeparator = separator;
     else
         eMyMoney::Money::_thousandSeparator = 0;
 }
 
 const QChar MyMoneyMoney::thousandSeparator()
 {
     return eMyMoney::Money::_thousandSeparator;
 }
 
 void MyMoneyMoney::setDecimalSeparator(const QChar &separator)
 {
     if (separator != QLatin1Char(' '))
         eMyMoney::Money::_decimalSeparator = separator;
     else
         eMyMoney::Money::_decimalSeparator = 0;
 }
 
 const QChar MyMoneyMoney::decimalSeparator()
 {
     return eMyMoney::Money::_decimalSeparator;
 }
 
 MyMoneyMoney::MyMoneyMoney(const QString& pszAmount)
     : AlkValue(pszAmount, eMyMoney::Money::_decimalSeparator)
 {
 }
 
 ////////////////////////////////////////////////////////////////////////////////
 //      Name: MyMoneyMoney
 //   Purpose: Constructor - constructs object from an amount in a signed64 value
 //   Returns: None
 //    Throws: Nothing.
 // Arguments: Amount - signed 64 object containing amount
 //            denom  - denominator of the object
 //
 ////////////////////////////////////////////////////////////////////////////////
 MyMoneyMoney::MyMoneyMoney(qint64 Amount, const unsigned int denom)
 {
     if (denom == 0)
         throw MYMONEYEXCEPTION_CSTRING("Denominator 0 not allowed!");
 
     *this = AlkValue(QString::fromLatin1("%1/%2").arg(Amount).arg(denom), eMyMoney::Money::_decimalSeparator);
 }
 
 ////////////////////////////////////////////////////////////////////////////////
 //      Name: MyMoneyMoney
 //   Purpose: Constructor - constructs object from an amount in a integer value
 //   Returns: None
 //    Throws: Nothing.
 // Arguments: iAmount - integer object containing amount
 //            denom   - denominator of the object
 //
 ////////////////////////////////////////////////////////////////////////////////
 MyMoneyMoney::MyMoneyMoney(const int iAmount, const unsigned int denom)
 {
     if (denom == 0)
         throw MYMONEYEXCEPTION_CSTRING("Denominator 0 not allowed!");
     *this = AlkValue(iAmount, denom);
 }
 
 ////////////////////////////////////////////////////////////////////////////////
 //      Name: MyMoneyMoney
 //   Purpose: Constructor - constructs object from an amount in a long integer value
 //   Returns: None
 //    Throws: Nothing.
 // Arguments: iAmount - integer object containing amount
 //            denom   - denominator of the object
 //
 ////////////////////////////////////////////////////////////////////////////////
 MyMoneyMoney::MyMoneyMoney(const long int iAmount, const unsigned int denom)
 {
     if (denom == 0)
         throw MYMONEYEXCEPTION_CSTRING("Denominator 0 not allowed!");
     *this = AlkValue(QString::fromLatin1("%1/%2").arg(iAmount).arg(denom), eMyMoney::Money::_decimalSeparator);
 }
 
 
 MyMoneyMoney::~MyMoneyMoney()
 {
 }
 
 MyMoneyMoney MyMoneyMoney::abs() const
 {
     return static_cast<const MyMoneyMoney>(AlkValue::abs());
 }
 
 QString MyMoneyMoney::formatMoney(int denom, bool showThousandSeparator) const
 {
     return formatMoney(QString(), denomToPrec(denom), showThousandSeparator);
 }
 
 QString MyMoneyMoney::formatMoney(const QString& currency, const int prec, bool showThousandSeparator) const
 {
     QString res;
     QString tmpCurrency = currency;
     int tmpPrec = prec;
     mpz_class denom = 1;
     mpz_class value;
     const int maxPrecision = 20;
 
     // if prec == -1 we want the maximum possible but w/o trailing zeroes
     if (tmpPrec == -1) {
         tmpPrec = maxPrecision;
     }
     mpz_ui_pow_ui(denom.get_mpz_t(), 10, tmpPrec);
 
     value = static_cast<const MyMoneyMoney>(convertDenominator(denom)).valueRef().get_num();
 
     bool bNegative = false;
     mpz_class left = value / static_cast<MyMoneyMoney>(convertDenominator(denom)).valueRef().get_den();
     mpz_class right = mpz_class((valueRef() - mpq_class(left)) * denom);
 
     if (right < 0) {
         right = -right;
         bNegative = true;
     }
     if (left < 0) {
         left = -left;
         bNegative = true;
     }
 
     // convert the integer (left) part to a string
     res.append(left.get_str().c_str());
 
     // if requested, insert thousand separators every three digits
     if (showThousandSeparator) {
         int pos = res.length();
         while ((0 < (pos -= 3)) && thousandSeparator() != 0)
             res.insert(pos, thousandSeparator());
     }
 
     // take care of the fractional part
     if (prec > 0 || (prec == -1 && right != 0)) {
         if (decimalSeparator() != 0)
             res += decimalSeparator();
 
         auto rs  = QString::fromLatin1("%1").arg(right.get_str().c_str());
         if (prec != -1)
             rs = rs.rightJustified(prec, QLatin1Char('0'), true);
         else {
             rs = rs.rightJustified(maxPrecision, QLatin1Char('0'), true);
             // no trailing zeroes or decimal separators
             while (rs.endsWith(QLatin1Char('0')))
                 rs.truncate(rs.length() - 1);
             while (rs.endsWith(decimalSeparator()))
                 rs.truncate(rs.length() - 1);
         }
         res += rs;
     }
 
     eMyMoney::Money::signPosition signpos = bNegative ? eMyMoney::Money::_negativeMonetarySignPosition : eMyMoney::Money::_positiveMonetarySignPosition;
     auto sign = bNegative ? QString::fromLatin1("-") : QString();
 
     switch (signpos) {
     case eMyMoney::Money::ParensAround:
         // do nothing here
         break;
     case eMyMoney::Money::PreceedQuantityAndSymbol:
         res.prepend(sign);
         break;
     case eMyMoney::Money::SucceedQuantityAndSymbol:
         res.append(sign);
         break;
     case eMyMoney::Money::PreceedSymbol:
         tmpCurrency.prepend(sign);
         break;
     case eMyMoney::Money::SucceedSymbol:
         tmpCurrency.append(sign);
         break;
     }
     if (!tmpCurrency.isEmpty()) {
         if (bNegative ? eMyMoney::Money::_negativePrefixCurrencySymbol : eMyMoney::Money::_positivePrefixCurrencySymbol) {
             if (bNegative ? eMyMoney::Money::_negativeSpaceSeparatesSymbol : eMyMoney::Money::_positiveSpaceSeparatesSymbol) {
                 res.prepend(QLatin1Char(' '));
             }
             res.prepend(tmpCurrency);
         } else {
             if (bNegative ? eMyMoney::Money::_negativeSpaceSeparatesSymbol : eMyMoney::Money::_positiveSpaceSeparatesSymbol) {
                 res.append(QLatin1Char(' '));
             }
             res.append(tmpCurrency);
         }
     }
 
     if (signpos == eMyMoney::Money::ParensAround) {
         res.prepend(QLatin1Char('('));
         res.append(QLatin1Char(')'));
     }
 
     return res;
 }
 
 ////////////////////////////////////////////////////////////////////////////////
 //      Name: operator+
 //   Purpose: Addition operator - adds the input amount to the object
 //   Returns: The current object
 //    Throws: Nothing.
 // Arguments: b - MyMoneyMoney object to be added
 //
 ////////////////////////////////////////////////////////////////////////////////
 const MyMoneyMoney MyMoneyMoney::operator+(const MyMoneyMoney& _b) const
 {
     return static_cast<const MyMoneyMoney>(AlkValue::operator+(_b));
 }
 
 
 ////////////////////////////////////////////////////////////////////////////////
 //      Name: operator-
 //   Purpose: Addition operator - subtracts the input amount from the object
 //   Returns: The current object
 //    Throws: Nothing.
 // Arguments: AmountInPence - MyMoneyMoney object to be subtracted
 //
 ////////////////////////////////////////////////////////////////////////////////
 const MyMoneyMoney MyMoneyMoney::operator-(const MyMoneyMoney& _b) const
 {
     return static_cast<const MyMoneyMoney>(AlkValue::operator-(_b));
 }
 
 ////////////////////////////////////////////////////////////////////////////////
 //      Name: operator*
 //   Purpose: Multiplication operator - multiplies the input amount to the object
 //   Returns: The current object
 //    Throws: Nothing.
 // Arguments: b - MyMoneyMoney object to be multiplied
 //
 ////////////////////////////////////////////////////////////////////////////////
 const MyMoneyMoney MyMoneyMoney::operator*(const MyMoneyMoney& _b) const
 {
     return static_cast<const MyMoneyMoney>(AlkValue::operator*(_b));
 }
 
 ////////////////////////////////////////////////////////////////////////////////
 //      Name: operator/
 //   Purpose: Division operator - divides the object by the input amount
 //   Returns: The current object
 //    Throws: Nothing.
 // Arguments: b - MyMoneyMoney object to be used as dividend
 //
 ////////////////////////////////////////////////////////////////////////////////
 const MyMoneyMoney MyMoneyMoney::operator/(const MyMoneyMoney& _b) const
 {
     return static_cast<const MyMoneyMoney>(AlkValue::operator/(_b));
 }
 
 bool MyMoneyMoney::isNegative() const
 {
     return (valueRef() < 0) ? true : false;
 }
 
 bool MyMoneyMoney::isPositive() const
 {
     return (valueRef() > 0) ? true : false;
 }
 
 bool MyMoneyMoney::isZero() const
 {
     return valueRef() == 0;
 }
 
 bool MyMoneyMoney::isAutoCalc() const
 {
     return (*this == autoCalc);
 }
 
 MyMoneyMoney MyMoneyMoney::convert(const signed64 _denom, const AlkValue::RoundingMethod how) const
 {
     return static_cast<const MyMoneyMoney>(AlkValue::convertDenominator(_denom, how));
 }
 
 MyMoneyMoney MyMoneyMoney::reduce() const
 {
     MyMoneyMoney out(*this);
     out.canonicalize();
     return out;
 }
 
 signed64 MyMoneyMoney::precToDenom(int prec)
 {
     signed64 denom = 1;
 
     while (prec--)
         denom *= 10;
 
     return denom;
 }
 
 double MyMoneyMoney::toDouble() const
 {
     return valueRef().get_d();
 }
 
 int MyMoneyMoney::denomToPrec(signed64 fract)
 {
     int rc = 0;
     while (fract > 1) {
         rc++;
         fract /= 10;
     }
     return rc;
 }
 
 /**
  * @todo Eventually move this to AlkValue
  */
 MyMoneyMoney MyMoneyMoney::convertDenominator(mpz_class denom, const AlkValue::RoundingMethod how) const
 {
     MyMoneyMoney in(*this);
     mpz_class in_num(mpq_numref(in.valueRef().get_mpq_t()));
 
     MyMoneyMoney out; // initialize to zero
 
     int sign = sgn(in_num);
     if (sign != 0) {
         // sign is either -1 for negative numbers or +1 in all other cases
 
         MyMoneyMoney temp;
         // only process in case the denominators are different
         if (mpz_cmpabs(denom.get_mpz_t(), mpq_denref(valueRef().get_mpq_t())) != 0) {
             mpz_class in_denom(mpq_denref(in.valueRef().get_mpq_t()));
             mpz_class out_num, out_denom;
 
             if (sgn(in_denom) == -1) { // my denom is negative
                 in_num = in_num * (-in_denom);
                 in_num = 1;
             }
 
             mpz_class remainder;
             int denom_neg = 0;
 
             // if the denominator is less than zero, we are to interpret it as
             // the reciprocal of its magnitude.
             if (sgn(denom) < 0) {
                 mpz_class temp_a;
                 mpz_class temp_bc;
                 denom = -denom;
                 denom_neg = 1;
                 temp_a = ::abs(in_num);
                 temp_bc = in_denom * denom;
                 remainder = temp_a % temp_bc;
                 out_num = temp_a / temp_bc;
                 out_denom = denom;
             } else {
                 temp = AlkValue(denom, in_denom);
                 // the canonicalization required here is part of the ctor
                 // temp.d->m_val.canonicalize();
 
                 out_num = ::abs(in_num * temp.valueRef().get_num());
                 remainder = out_num % temp.valueRef().get_den();
                 out_num = out_num / temp.valueRef().get_den();
                 out_denom = denom;
             }
 
             if (remainder != 0) {
                 switch (how) {
                 case RoundFloor:
                     if (sign < 0) {
                         out_num = out_num + 1;
                     }
                     break;
 
                 case RoundCeil:
                     if (sign > 0) {
                         out_num = out_num + 1;
                     }
                     break;
 
                 case RoundTruncate:
                     break;
 
                 case RoundPromote:
                     out_num = out_num + 1;
                     break;
 
                 case RoundHalfDown:
                     if (denom_neg) {
                         if ((2 * remainder) > (in_denom * denom)) {
                             out_num = out_num + 1;
                         }
                     } else if ((2 * remainder) > (temp.valueRef().get_den())) {
                         out_num = out_num + 1;
                     }
                     break;
 
                 case RoundHalfUp:
                     if (denom_neg) {
                         if ((2 * remainder) >= (in_denom * denom)) {
                             out_num = out_num + 1;
                         }
                     } else if ((2 * remainder) >= temp.valueRef().get_den()) {
                         out_num = out_num + 1;
                     }
                     break;
 
                 case RoundRound:
                     if (denom_neg) {
                         if ((remainder * 2) > (in_denom * denom)) {
                             out_num = out_num + 1;
                         } else if ((2 * remainder) == (in_denom * denom)) {
                             if ((out_num % 2) != 0) {
                                 out_num = out_num + 1;
                             }
                         }
                     } else {
                         if ((remainder * 2) > temp.valueRef().get_den()) {
                             out_num = out_num + 1;
                         } else if ((2 * remainder) == temp.valueRef().get_den()) {
                             if ((out_num % 2) != 0) {
                                 out_num = out_num + 1;
                             }
                         }
                     }
                     break;
 
                 case RoundNever:
                     qWarning() << "AlkValue: have remainder" << toString() << "->convertDenominator()";
                     break;
                 }
             }
 
             // construct the new output value
             out = AlkValue(out_num * sign, out_denom);
         } else {
             out = *this;
         }
     }
     return out;
 }