diff options
Diffstat (limited to 'libempathy/empathy-utils.c')
| -rw-r--r-- | libempathy/empathy-utils.c | 75 |
1 files changed, 75 insertions, 0 deletions
diff --git a/libempathy/empathy-utils.c b/libempathy/empathy-utils.c index 24d7b544b..8d4cd8d68 100644 --- a/libempathy/empathy-utils.c +++ b/libempathy/empathy-utils.c @@ -29,6 +29,7 @@ #include "config.h" #include <string.h> +#include <math.h> #include <time.h> #include <sys/types.h> @@ -796,3 +797,77 @@ empathy_get_x509_certificate_hostname (gnutls_x509_crt_t cert) return NULL; } + +gchar * +empathy_format_currency (gint amount, + guint scale, + const gchar *currency) +{ +#define MINUS "\342\210\222" +#define EURO "\342\202\254" +#define YEN "\302\245" +#define POUND "\302\243" + + /* localised representations of currency */ + /* FIXME: check these, especially negatives and decimals */ + static const struct { + const char *currency; + const char *positive; + const char *negative; + const char *decimal; + } currencies[] = { + /* sym positive negative decimal */ + { "EUR", EURO "%s", MINUS EURO "%s", "." }, + { "USD", "$%s", MINUS "$%s", "." }, + { "JPY", YEN "%s" MINUS YEN "%s", "." }, + { "GBP", POUND "%s", MINUS POUND "%s", "." }, + { "PLN", "%s zl", MINUS "%s zl", "." }, + { "BRL", "R$%s", MINUS "R$%s", "." }, + { "SEK", "%s kr", MINUS "%s kr", "." }, + { "DKK", "kr %s", "kr " MINUS "%s", "." }, + { "HKD", "$%s", MINUS "$%s", "." }, + { "CHF", "%s Fr.", MINUS "%s Fr.", "." }, + { "NOK", "kr %s", "kr" MINUS "%s", "," }, + { "CAD", "$%s", MINUS "$%s", "." }, + { "TWD", "$%s", MINUS "$%s", "." }, + { "AUD", "$%s", MINUS "$%s", "." }, + }; + + const char *positive = "%s"; + const char *negative = MINUS "%s"; + const char *decimal = "."; + char *fmt_amount, *money; + guint i; + + /* get the localised currency format */ + for (i = 0; i < G_N_ELEMENTS (currencies); i++) { + if (!tp_strdiff (currency, currencies[i].currency)) { + positive = currencies[i].positive; + negative = currencies[i].negative; + decimal = currencies[i].decimal; + break; + } + } + + /* format the amount using the scale */ + if (scale == 0) { + /* no decimal point required */ + fmt_amount = g_strdup_printf ("%d", amount); + } else { + /* don't use floating point arithmatic, it's noisy; + * we take the absolute values, because we want the minus + * sign to appear before the $ */ + int divisor = pow (10, scale); + int dollars = abs (amount / divisor); + int cents = abs (amount % divisor); + + fmt_amount = g_strdup_printf ("%d%s%0*d", + dollars, decimal, scale, cents); + } + + money = g_strdup_printf (amount < 0 ? negative : positive, fmt_amount); + g_free (fmt_amount); + + return money; +} + |