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[gnc-euro.cpp] use c++isms

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pull/1934/head
Christopher Lam 2 years ago
parent 3bc7ce606d
commit ef8afedd09
1 changed files with 33 additions and 123 deletions
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156
libgnucash/engine/gnc-euro.cpp
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@ -19,27 +19,15 @@
* *
\********************************************************************/
#include <config.h>
#include <string>
#include <map>
#include <optional>
#include "gnc-euro.h"
#include <glib/gi18n.h>
#include <math.h>
#include <stdlib.h>
#include <string.h>
#include "gnc-session.h"
/* local structs */
typedef struct
{
const char *currency;
double rate;
} gnc_euro_rate_struct;
/* This array MUST be sorted ! */
/* The rates are per EURO and are converted to GncNumeric */
static gnc_euro_rate_struct gnc_euro_rates[] =
static const std::map<std::string,double> gnc_euro_rates =
{
{ "ATS", 13.7603 }, /* austrian schilling */
{ "BEF", 40.3399 }, /* belgian franc */
@ -63,55 +51,25 @@ static gnc_euro_rate_struct gnc_euro_rates[] =
{ "SKK", 30.1260 } /* slovak koruna */
};
static int
gnc_euro_rate_compare (const void * key, const void * value)
{
auto curr = static_cast<const gnc_commodity*>(key);
auto euro = static_cast<const gnc_euro_rate_struct*>(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)
static std::optional<double>
get_euro_rate (const gnc_commodity * currency)
{
const char *code = key;
const gnc_euro_rate_struct * euro = value;
if (!currency || !gnc_commodity_is_iso(currency))
return {};
if (!key || !value)
return -1;
auto it = gnc_euro_rates.find (gnc_commodity_get_mnemonic(currency));
if (it == gnc_euro_rates.end())
return {};
return g_ascii_strcasecmp (code, euro->currency);
return it->second;
}
#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 = (gnc_euro_rate_struct*)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;
return get_euro_rate (currency).has_value();
}
/* ------------------------------------------------------ */
@ -119,34 +77,17 @@ gnc_is_euro_currency(const gnc_commodity * currency)
gnc_numeric
gnc_convert_to_euro(const gnc_commodity * currency, gnc_numeric value)
{
gnc_euro_rate_struct *result;
auto euro_rate = get_euro_rate (currency);
if (!euro_rate)
return gnc_numeric_zero();
if (currency == NULL)
return gnc_numeric_zero ();
if (!gnc_commodity_is_iso(currency))
return gnc_numeric_zero ();
result = (gnc_euro_rate_struct*)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 ();
auto rate = double_to_gnc_numeric (*euro_rate, 100000, GNC_HOW_RND_ROUND_HALF_UP);
/* 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 https://eur-lex.europa.eu/legal-content/EN/TXT/?uri=CELEX%3A31997R1103&qid=1662917247821
*/
return gnc_numeric_div (value, rate, 100, GNC_HOW_RND_ROUND_HALF_UP);
}
/* EC Regulation 1103/97 states we should use "Round half away from zero"
* See https://eur-lex.europa.eu/legal-content/EN/TXT/?uri=CELEX%3A31997R1103&qid=1662917247821
*/
return gnc_numeric_div (value, rate, 100, GNC_HOW_RND_ROUND_HALF_UP);
}
/* ------------------------------------------------------ */
@ -154,33 +95,16 @@ gnc_convert_to_euro(const gnc_commodity * currency, gnc_numeric value)
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 ();
auto euro_rate = get_euro_rate (currency);
if (!euro_rate)
return gnc_numeric_zero();
result = (gnc_euro_rate_struct*)bsearch(currency,
gnc_euro_rates,
sizeof(gnc_euro_rates) / sizeof(gnc_euro_rate_struct),
sizeof(gnc_euro_rate_struct),
gnc_euro_rate_compare);
auto rate = double_to_gnc_numeric (*euro_rate, 100000, GNC_HOW_RND_ROUND_HALF_UP);
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);
}
/* 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);
}
/* ------------------------------------------------------ */
@ -188,25 +112,11 @@ gnc_convert_from_euro(const gnc_commodity * currency, gnc_numeric value)
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 = (gnc_euro_rate_struct*)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 ();
auto euro_rate = get_euro_rate (currency);
if (!euro_rate)
return gnc_numeric_zero();
return double_to_gnc_numeric (result->rate, GNC_DENOM_AUTO,
GNC_HOW_RND_ROUND_HALF_UP);
return double_to_gnc_numeric (*euro_rate, GNC_DENOM_AUTO, GNC_HOW_RND_ROUND_HALF_UP);
}
/* ------------------------------------------------------ */

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