NetBSD/lib/libc/locale/nl_langinfo.3

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.\" $NetBSD: nl_langinfo.3,v 1.10 2003/02/12 18:52:12 wiz Exp $
.\"
.\" 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
.Fd #include \*[Lt]langinfo.h\*[Gt]
.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.
.Pp
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.
.sp
.nf
.ta \w'ERA_D_T_FMT'u+1n +\w'LC_MESSAGES'u+1n +\w'Name of the third day of the week (e.g.: Tuesday)'u
\fIConstant\fP \fICategory\fP \fIMeaning\fP
.ta \w'ERA_D_T_FMT'u+1n +\w'LC_MESSAGES'u+1n +\w'Name of the third day of the week (e.g.: Tuesday)'u+1nC
.sp 5p
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
.fi
.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:
.Pp
.Bd -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 .