LCOV - code coverage report
Current view: top level - libgnucash/engine - gnc-euro.cpp (source / functions) Coverage Total Hit
Test: gnucash.info Lines: 71.4 % 28 20
Test Date: 2026-07-16 14:13:45 Functions: 83.3 % 6 5
Legend: Lines: hit not hit | Branches: + taken - not taken # not executed Branches: - 0 0

             Branch data     Line data    Source code
       1                 :             : /********************************************************************\
       2                 :             :  * gnc-euro.c -- utilities for EURO currency                        *
       3                 :             :  *                                                                  *
       4                 :             :  * Copyright (C) 2000 Herbert Thoma                                 *
       5                 :             :  *                                                                  *
       6                 :             :  * This program is free software; you can redistribute it and/or    *
       7                 :             :  * modify it under the terms of the GNU General Public License as   *
       8                 :             :  * published by the Free Software Foundation; either version 2 of   *
       9                 :             :  * the License, or (at your option) any later version.              *
      10                 :             :  *                                                                  *
      11                 :             :  * This program is distributed in the hope that it will be useful,  *
      12                 :             :  * but WITHOUT ANY WARRANTY; without even the implied warranty of   *
      13                 :             :  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the    *
      14                 :             :  * GNU General Public License for more details.                     *
      15                 :             :  *                                                                  *
      16                 :             :  * You should have received a copy of the GNU General Public License*
      17                 :             :  * along with this program; if not, write to the Free Software      *
      18                 :             :  * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.        *
      19                 :             :  *                                                                  *
      20                 :             : \********************************************************************/
      21                 :             : 
      22                 :             : #include <string>
      23                 :             : #include <boost/container/flat_map.hpp>
      24                 :             : #include <optional>
      25                 :             : 
      26                 :             : #include "gnc-euro.h"
      27                 :             : #include "gnc-session.h"
      28                 :             : #include <gnc-numeric.hpp>
      29                 :             : #include <gnc-rational-rounding.hpp>
      30                 :             : 
      31                 :             : /* The rates are per EURO and are denoted in GncNumeric  */
      32                 :             : static const boost::container::flat_map <std::string, GncNumeric> gnc_euro_rates =
      33                 :             : {
      34                 :             :     { "ATS", {137603,   10000} }, /* austrian schilling */
      35                 :             :     { "BEF", {403399,   10000} }, /* belgian franc */
      36                 :             :     { "BGN", {195583,  100000} }, /* Bulgarian lev */
      37                 :             :     { "CYP", {585274, 1000000} }, /* cyprus pound */
      38                 :             :     { "DEM", {195583,  100000} }, /* german mark */
      39                 :             :     { "EEK", {156466,   10000} }, /* Estonian Kroon */
      40                 :             :     { "ESP", {166386,    1000} }, /* spanish peseta */
      41                 :             :     { "EUR", {     1,       1} }, /* euro */
      42                 :             :     { "FIM", {594573,  100000} }, /* finnmark */
      43                 :             :     { "FRF", {655957,  100000} }, /* french franc */
      44                 :             :     { "GRD", {340750,    1000} }, /* greek drachma */
      45                 :             :     { "HRK", {753450,  100000} }, /* Croatian kuna */
      46                 :             :     { "IEP", {787564, 1000000} }, /* irish pound */
      47                 :             :     { "ITL", {193627,     100} }, /* italian lira */
      48                 :             :     { "LUF", {403399,   10000} }, /* luxembourg franc */
      49                 :             :     { "LVL", {702804, 1000000} }, /* latvian lats */
      50                 :             :     { "MTL", {429300, 1000000} }, /* maltese lira */
      51                 :             :     { "NLG", {220371,  100000} }, /* netherland gulden */
      52                 :             :     { "PTE", {200482,    1000} }, /* portuguese escudo */
      53                 :             :     { "SIT", {239640,    1000} }, /* slovenian tolar */
      54                 :             :     { "SKK", {301260,   10000} }  /* slovak koruna */
      55                 :             : };
      56                 :             : 
      57                 :             : static std::optional<GncNumeric>
      58                 :        7476 : get_euro_rate (const gnc_commodity * currency)
      59                 :             : {
      60                 :        7476 :     if (!currency || !gnc_commodity_is_iso(currency))
      61                 :           0 :         return {};
      62                 :             : 
      63                 :       14952 :     auto it = gnc_euro_rates.find (gnc_commodity_get_mnemonic(currency));
      64                 :        7476 :     if (it == gnc_euro_rates.end())
      65                 :        7421 :         return {};
      66                 :             : 
      67                 :          55 :     return it->second;
      68                 :             : }
      69                 :             : 
      70                 :             : /* ------------------------------------------------------ */
      71                 :             : 
      72                 :             : gboolean
      73                 :        7435 : gnc_is_euro_currency(const gnc_commodity * currency)
      74                 :             : {
      75                 :        7435 :     return get_euro_rate (currency).has_value();
      76                 :             : }
      77                 :             : 
      78                 :             : /* ------------------------------------------------------ */
      79                 :             : 
      80                 :             : gnc_numeric
      81                 :          11 : gnc_convert_to_euro(const gnc_commodity * currency, gnc_numeric value)
      82                 :             : {
      83                 :          11 :     auto euro_rate = get_euro_rate (currency);
      84                 :          11 :     if (!euro_rate)
      85                 :           0 :         return gnc_numeric_zero();
      86                 :             : 
      87                 :             :     /* round to 2 decimal places */
      88                 :             :     /* EC Regulation 1103/97 states we should use "Round half away from zero"
      89                 :             :      * See https://eur-lex.europa.eu/legal-content/EN/TXT/?uri=CELEX%3A31997R1103&qid=1662917247821
      90                 :             :      */
      91                 :          11 :     return (value / *euro_rate).convert<RoundType::half_up>(100);
      92                 :             : }
      93                 :             : 
      94                 :             : /* ------------------------------------------------------ */
      95                 :             : 
      96                 :             : gnc_numeric
      97                 :          10 : gnc_convert_from_euro(const gnc_commodity * currency, gnc_numeric value)
      98                 :             : {
      99                 :          10 :     auto euro_rate = get_euro_rate (currency);
     100                 :          10 :     if (!euro_rate)
     101                 :           0 :         return gnc_numeric_zero();
     102                 :             : 
     103                 :             :     /* EC Regulation 1103/97 states we should use "Round half away from zero"
     104                 :             :      * See http://europa.eu/legislation_summaries/economic_and_monetary_affairs/institutional_and_economic_framework/l25025_en.htm */
     105                 :          10 :     return (value * *euro_rate).convert<RoundType::half_up>(gnc_commodity_get_fraction (currency));
     106                 :             : }
     107                 :             : 
     108                 :             : /* ------------------------------------------------------ */
     109                 :             : 
     110                 :             : gnc_numeric
     111                 :          20 : gnc_euro_currency_get_rate (const gnc_commodity *currency)
     112                 :             : {
     113                 :          20 :     auto euro_rate = get_euro_rate (currency);
     114                 :          20 :     if (!euro_rate)
     115                 :           0 :         return gnc_numeric_zero();
     116                 :             : 
     117                 :          20 :     return static_cast<gnc_numeric>(*euro_rate);
     118                 :             : }
     119                 :             : 
     120                 :             : /* ------------------------------------------------------ */
     121                 :             : 
     122                 :             : gnc_commodity *
     123                 :           0 : gnc_get_euro (void)
     124                 :             : {
     125                 :           0 :     QofBook* book = qof_session_get_book (gnc_get_current_session ());
     126                 :           0 :     gnc_commodity_table *table = gnc_commodity_table_get_table (book);
     127                 :             : 
     128                 :           0 :     return gnc_commodity_table_lookup (table, GNC_COMMODITY_NS_CURRENCY, "EUR");
     129                 :             : }
        

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