mirror of
https://github.com/Gnucash/gnucash.git
synced 2024-11-26 10:51:09 -06:00
235 lines
7.5 KiB
C
235 lines
7.5 KiB
C
/********************************************************************\
|
|
* gnc-euro.c -- utilities for EURO currency *
|
|
* *
|
|
* Copyright (C) 2000 Herbert Thoma *
|
|
* *
|
|
* This program is free software; you can redistribute it and/or *
|
|
* modify it under the terms of the GNU General Public License as *
|
|
* published by the Free Software Foundation; either version 2 of *
|
|
* the License, or (at your option) any later version. *
|
|
* *
|
|
* This program is distributed in the hope that it will be useful, *
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of *
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
|
|
* GNU General Public License for more details. *
|
|
* *
|
|
* You should have received a copy of the GNU General Public License*
|
|
* along with this program; if not, write to the Free Software *
|
|
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. *
|
|
* *
|
|
\********************************************************************/
|
|
|
|
#include <config.h>
|
|
|
|
#include "gnc-euro.h"
|
|
|
|
#include <glib/gi18n.h>
|
|
#include <math.h>
|
|
#include <stdlib.h>
|
|
#include <string.h>
|
|
|
|
#include "gnc-ui-util.h"
|
|
|
|
/* local structs */
|
|
typedef struct
|
|
{
|
|
const char *currency;
|
|
double rate;
|
|
} gnc_euro_rate_struct;
|
|
|
|
|
|
/* This array MUST be sorted ! */
|
|
/* The rates are per EURO */
|
|
static gnc_euro_rate_struct gnc_euro_rates[] =
|
|
{
|
|
{ "ATS", 13.7603 }, /* austrian schilling */
|
|
{ "BEF", 40.3399 }, /* belgian franc */
|
|
{ "BFR", 40.3399 }, /* belgian franc */
|
|
{ "CYP", .585274 }, /* cyprus pound */
|
|
{ "DEM", 1.95583 }, /* german mark */
|
|
{ "DM", 1.95583 }, /* german mark */
|
|
{ "EEK", 15.6466 }, /* Estonian Kroon */
|
|
{ "ESC", 200.482 }, /* portuguese escudo */
|
|
{ "ESP", 166.386 }, /* spanish peseta */
|
|
{ "EUR", 1.00000 }, /* euro */
|
|
{ "EURO", 1.00000 }, /* euro */
|
|
{ "FF", 6.55957 }, /* french franc */
|
|
{ "FIM", 5.94573 }, /* finnmark */
|
|
{ "FMK", 5.94573 }, /* finnmark */
|
|
{ "FRF", 6.55957 }, /* french franc */
|
|
{ "GRD", 340.750 }, /* greek drachma */
|
|
{ "HFL", 2.20371 }, /* netherland gulden */
|
|
{ "IEP", .787564 }, /* irish pound */
|
|
{ "IRP", .787564 }, /* irish pound */
|
|
{ "ITL", 1936.27 }, /* italian lira */
|
|
{ "LFR", 40.3399 }, /* luxembourg franc */
|
|
{ "LIT", 1936.27 }, /* italian lira */
|
|
{ "LUF", 40.3399 }, /* luxembourg franc */
|
|
{ "LVL", .702804 }, /* latvian lats */
|
|
{ "MTL", .429300 }, /* maltese lira */
|
|
{ "NLG", 2.20371 }, /* netherland gulden */
|
|
{ "PTA", 166.386 }, /* spanish peseta */
|
|
{ "PTE", 200.482 }, /* portuguese escudo */
|
|
{ "S", 13.7603 }, /* austrian schilling */
|
|
{ "SCH", 13.7603 }, /* austrian schilling */
|
|
{ "SIT", 239.640 }, /* slovenian tolar */
|
|
{ "SKK", 30.1260 } /* slovak koruna */
|
|
};
|
|
|
|
static int
|
|
gnc_euro_rate_compare (const void * key, const void * value)
|
|
{
|
|
const gnc_commodity * curr = key;
|
|
const gnc_euro_rate_struct * euro = value;
|
|
|
|
if (!key || !value)
|
|
return -1;
|
|
|
|
return g_ascii_strcasecmp(gnc_commodity_get_mnemonic(curr), euro->currency);
|
|
}
|
|
|
|
#if 0 /* Not Used */
|
|
static int
|
|
gnc_euro_rate_compare_code (const void * key, const void * value)
|
|
{
|
|
const char *code = key;
|
|
const gnc_euro_rate_struct * euro = value;
|
|
|
|
if (!key || !value)
|
|
return -1;
|
|
|
|
return g_ascii_strcasecmp (code, euro->currency);
|
|
}
|
|
#endif
|
|
|
|
/* ------------------------------------------------------ */
|
|
|
|
gboolean
|
|
gnc_is_euro_currency(const gnc_commodity * currency)
|
|
{
|
|
gnc_euro_rate_struct *result;
|
|
|
|
if (currency == NULL)
|
|
return FALSE;
|
|
|
|
if (!gnc_commodity_is_iso(currency))
|
|
return FALSE;
|
|
|
|
result = bsearch(currency,
|
|
gnc_euro_rates,
|
|
sizeof(gnc_euro_rates) / sizeof(gnc_euro_rate_struct),
|
|
sizeof(gnc_euro_rate_struct),
|
|
gnc_euro_rate_compare);
|
|
|
|
if (result == NULL)
|
|
return FALSE;
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
/* ------------------------------------------------------ */
|
|
|
|
gnc_numeric
|
|
gnc_convert_to_euro(const gnc_commodity * currency, gnc_numeric value)
|
|
{
|
|
gnc_euro_rate_struct *result;
|
|
|
|
if (currency == NULL)
|
|
return gnc_numeric_zero ();
|
|
|
|
if (!gnc_commodity_is_iso(currency))
|
|
return gnc_numeric_zero ();
|
|
|
|
result = bsearch(currency,
|
|
gnc_euro_rates,
|
|
sizeof(gnc_euro_rates) / sizeof(gnc_euro_rate_struct),
|
|
sizeof(gnc_euro_rate_struct),
|
|
gnc_euro_rate_compare);
|
|
|
|
if (result == NULL)
|
|
return gnc_numeric_zero ();
|
|
|
|
/* round to 2 decimal places */
|
|
{
|
|
gnc_numeric rate;
|
|
|
|
rate = double_to_gnc_numeric (result->rate, 100000, GNC_HOW_RND_ROUND_HALF_UP);
|
|
|
|
/* EC Regulation 1103/97 states we should use "Round half away from zero"
|
|
* See http://europa.eu/legislation_summaries/economic_and_monetary_affairs/institutional_and_economic_framework/l25025_en.htm */
|
|
return gnc_numeric_div (value, rate, 100, GNC_HOW_RND_ROUND_HALF_UP);
|
|
}
|
|
}
|
|
|
|
/* ------------------------------------------------------ */
|
|
|
|
gnc_numeric
|
|
gnc_convert_from_euro(const gnc_commodity * currency, gnc_numeric value)
|
|
{
|
|
gnc_euro_rate_struct * result;
|
|
|
|
if (currency == NULL)
|
|
return gnc_numeric_zero ();
|
|
|
|
if (!gnc_commodity_is_iso(currency))
|
|
return gnc_numeric_zero ();
|
|
|
|
result = bsearch(currency,
|
|
gnc_euro_rates,
|
|
sizeof(gnc_euro_rates) / sizeof(gnc_euro_rate_struct),
|
|
sizeof(gnc_euro_rate_struct),
|
|
gnc_euro_rate_compare);
|
|
|
|
if (result == NULL)
|
|
return gnc_numeric_zero ();
|
|
|
|
{
|
|
gnc_numeric rate;
|
|
|
|
rate = double_to_gnc_numeric (result->rate, 100000, GNC_HOW_RND_ROUND_HALF_UP);
|
|
|
|
/* EC Regulation 1103/97 states we should use "Round half away from zero"
|
|
* See http://europa.eu/legislation_summaries/economic_and_monetary_affairs/institutional_and_economic_framework/l25025_en.htm */
|
|
return gnc_numeric_mul (value, rate, gnc_commodity_get_fraction (currency),
|
|
GNC_HOW_RND_ROUND_HALF_UP);
|
|
}
|
|
}
|
|
|
|
/* ------------------------------------------------------ */
|
|
|
|
gnc_numeric
|
|
gnc_euro_currency_get_rate (const gnc_commodity *currency)
|
|
{
|
|
gnc_euro_rate_struct * result;
|
|
|
|
if (currency == NULL)
|
|
return gnc_numeric_zero ();
|
|
|
|
if (!gnc_commodity_is_iso(currency))
|
|
return gnc_numeric_zero ();
|
|
|
|
result = bsearch(currency,
|
|
gnc_euro_rates,
|
|
sizeof(gnc_euro_rates) / sizeof(gnc_euro_rate_struct),
|
|
sizeof(gnc_euro_rate_struct),
|
|
gnc_euro_rate_compare);
|
|
|
|
if (result == NULL)
|
|
return gnc_numeric_zero ();
|
|
|
|
return double_to_gnc_numeric (result->rate, GNC_DENOM_AUTO,
|
|
GNC_HOW_RND_ROUND_HALF_UP);
|
|
}
|
|
|
|
/* ------------------------------------------------------ */
|
|
|
|
gnc_commodity *
|
|
gnc_get_euro (void)
|
|
{
|
|
gnc_commodity_table *table;
|
|
|
|
table = gnc_commodity_table_get_table (gnc_get_current_book ());
|
|
|
|
return gnc_commodity_table_lookup (table, GNC_COMMODITY_NS_CURRENCY, "EUR");
|
|
}
|