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Manual Pages  — NL_LANGINFO

NAME

nl_langinfo – language information

CONTENTS

LIBRARY

Standard C Library (libc, -lc)

SYNOPSIS

#include <langinfo.h>

char *
nl_langinfo(nl_item item);

char *
nl_langinfo_l(nl_item item, locale_t loc);

DESCRIPTION

The nl_langinfo() function returns a pointer to a string containing information relevant to the particular language or cultural area defined in the program or thread's locale, or in the case of nl_langinfo_l(), the locale passed as the second argument.

Calls to setlocale() with a category corresponding to the category of item, or to the category LC_ALL, may overwrite the buffer pointed to by the return value.

The manifest constant names and values of item are defined in <langinfo.h>.

The following standard constants are recognized:
Constant Category Description
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
DAY_2 LC_TIME name of the second day of the week
DAY_3 LC_TIME name of the third day of the week
DAY_4 LC_TIME name of the fourth day of the week
DAY_5 LC_TIME name of the fifth day of the week
DAY_6 LC_TIME name of the sixth day of the week
DAY_7 LC_TIME name of the seventh day of the week
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 extended regularexpression
NOEXPR LC_MESSAGES negative response extended regular expression
CRNCYSTR LC_MONETARY local currency symbol, preceded by '-' if thesymbol should appear before the value, '+' if the symbol should appear after the value, or '.' if the symbol should replace the radix character; if the local currency symbol is the empty string, implementations may return the empty string ("")

The following non-standard FreeBSD extensions are recognized:
Constant Category Description
D_MD_ORDER LC_TIME month/day order
ALTMON_1 LC_TIME standalone name of the first month
ALTMON_2 LC_TIME standalone name of the second month
ALTMON_3 LC_TIME standalone name of the third month
ALTMON_4 LC_TIME standalone name of the fourth month
ALTMON_5 LC_TIME standalone name of the fifth month
ALTMON_6 LC_TIME standalone name of the sixth month
ALTMON_7 LC_TIME standalone name of the seventh month
ALTMON_8 LC_TIME standalone name of the eighth month
ALTMON_9 LC_TIME standalone name of the ninth month
ALTMON_10 LC_TIME standalone name of the tenth month
ALTMON_11 LC_TIME standalone name of the eleventh month
ALTMON_12 LC_TIME standalone name of the twelfth month
YESSTR LC_MESSAGES affirmative response string
NOSTR LC_MESSAGES negative response string

RETURN VALUES

In a locale where langinfo data is not defined, nl_langinfo() returns a pointer to the corresponding string in the POSIX locale. nl_langinfo_l() returns the same values as nl_langinfo(). In all locales, nl_langinfo() returns a pointer to an empty string if item contains an invalid setting.

EXAMPLES

For example:

    nl_langinfo(ABDAY_1)

would return a pointer to the string "Dom" if the identified language was Portuguese, and "Sun" if the identified language was English.

SEE ALSO

setlocale(3)

STANDARDS

The nl_langinfo() function conforms to Version 2 of the Single UNIX Specification. The nl_langinfo_l() function conforms to IEEE Std 1003.1-2008 ("POSIX.1").

HISTORY

The nl_langinfo() function first appeared in FreeBSD 4.6 .

NL_LANGINFO (3) December 14, 2020

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