Written by J.T. Conklin <jtc@NetBSD.org>.
Public domain.
.Dd February 12, 2003 .Dt NL_LANGINFO 3 .Os .Sh NAME .Nm nl_langinfo .Nd get locale information .Sh LIBRARY .Lb libc .Sh SYNOPSIS n langinfo.h .Ft char * .Fn nl_langinfo "nl_item item" .Sh DESCRIPTION The .Fn nl_langinfo function returns a pointer to a string containing information set by the program's locale.
p The names and values of .Fa item are defined in .Aq langinfo.h . The entries under Category indicate in which .Xr setlocale 3 category each item is defined.
Constant Category Meaning CODESET LC_CTYPE Codeset name D_T_FMT LC_TIME String for formatting date and time D_FMT LC_TIME Date format string T_FMT LC_TIME Time format string T_FMT_AMPM LC_TIME a.m. or p.m. time format string AM_STR LC_TIME Ante-meridiem affix PM_STR LC_TIME Post-meridiem affix DAY_1 LC_TIME Name of the first day of the week (e.g.: Sunday) DAY_2 LC_TIME Name of the second day of the week (e.g.: Monday) DAY_3 LC_TIME Name of the third day of the week (e.g.: Tuesday) DAY_4 LC_TIME Name of the fourth day of the week (e.g.: Wednesday) DAY_5 LC_TIME Name of the fifth day of the week (e.g.: Thursday) DAY_6 LC_TIME Name of the sixth day of the week (e.g.: Friday) DAY_7 LC_TIME Name of the seventh day of the week (e.g.: Saturday) ABDAY_1 LC_TIME Abbreviated name of the first day of the week ABDAY_2 LC_TIME Abbreviated name of the second day of the week ABDAY_3 LC_TIME Abbreviated name of the third day of the week ABDAY_4 LC_TIME Abbreviated name of the fourth day of the week ABDAY_5 LC_TIME Abbreviated name of the fifth day of the week ABDAY_6 LC_TIME Abbreviated name of the sixth day of the week ABDAY_7 LC_TIME Abbreviated name of the seventh day of the week MON_1 LC_TIME Name of the first month of the year MON_2 LC_TIME Name of the second month MON_3 LC_TIME Name of the third month MON_4 LC_TIME Name of the fourth month MON_5 LC_TIME Name of the fifth month MON_6 LC_TIME Name of the sixth month MON_7 LC_TIME Name of the seventh month MON_8 LC_TIME Name of the eighth month MON_9 LC_TIME Name of the ninth month MON_10 LC_TIME Name of the tenth month MON_11 LC_TIME Name of the eleventh month MON_12 LC_TIME Name of the twelfth month ABMON_1 LC_TIME Abbreviated name of the first month ABMON_2 LC_TIME Abbreviated name of the second month ABMON_3 LC_TIME Abbreviated name of the third month ABMON_4 LC_TIME Abbreviated name of the fourth month ABMON_5 LC_TIME Abbreviated name of the fifth month ABMON_6 LC_TIME Abbreviated name of the sixth month ABMON_7 LC_TIME Abbreviated name of the seventh month ABMON_8 LC_TIME Abbreviated name of the eighth month ABMON_9 LC_TIME Abbreviated name of the ninth month ABMON_10 LC_TIME Abbreviated name of the tenth month ABMON_11 LC_TIME Abbreviated name of the eleventh month ABMON_12 LC_TIME Abbreviated name of the twelfth month ERA LC_TIME Era description segments ERA_D_FMT LC_TIME Era date format string ERA_D_T_FMT LC_TIME Era date and time format string ERA_T_FMT LC_TIME Era time format string ALT_DIGITS LC_TIME Alternative symbols for digits RADIXCHAR LC_NUMERIC Radix character THOUSEP LC_NUMERIC Separator for thousands YESEXPR LC_MESSAGES Affirmative response expression NOEXPR LC_MESSAGES Negative response expression CRNCYSTR LC_MONETARY Local currency symbol.Sh RETURN VALUES .Fn nl_langinfo returns a pointer to an empty string if .Fa item is invalid. .Sh EXAMPLES The following example uses .Fn nl_langinfo to obtain the date and time format for the current locale:
p
d -literal #include <time.h>
#include <langinfo.h>
#include <locale.h>
int main(void)
{
char datestring[100];
struct tm *tm;
time_t t;
char *ptr;
t = time(NULL);
tm = localtime(&t);
(void)setlocale(LC_ALL, "");
ptr = nl_langinfo(D_T_FMT);
strftime(datestring, sizeof(datestring), ptr, tm);
printf("%s\n",datestring);
return (0);
}
.Ed
.Pp
The following example uses
.Fn nl_langinfo
to obtain the setting of the currency symbol for the current locale:
.Pp
.Bd
#include <langinfo.h>
#include <locale.h>
int main(void)
{
char *ptr;
(void)setlocale(LC_ALL, "");
ptr = nl_langinfo(CRNCYSTR);
printf("%s", ptr);
}
.Ed
.Sh SEE ALSO
.Xr setlocale 3 ,
.Xr nls 7
.Sh STANDARDS
The
.Fn nl_langinfo
function conforms to
.St -p1003.1-2001 .
.Sh HISTORY
The
.Fn nl_langinfo
function appeared in
.Nx 1.0 .