nl_langinfo - query language and locale information
SYNOPSIS
#include <langinfo.h>
char *nl_langinfo(nl_item *item);
DESCRIPTION
The nl_langinfo function provides access to locale infor
mation in a more flexible way than localeconv(3) does.
Individual and additional elements of the locale cate
gories can be queried.
Examples for the locale elements that can be specified in
item using the constants defined in <langinfo.h> are:
CODESET (LC_CTYPE)
Return a string with the name of the character
encoding used in the selected locale, such as
"UTF-8", "ISO-8859-1", or "ANSI_X3.4-1968" (better
known as US-ASCII). This is the same string that
you get with "locale charmap". For a list of char
acter encoding names, try "locale -m", cf.
locale(1).
D_T_FMT (LC_TIME)
Return a string that can be used as a format string
for strftime(3) to represent time and date in a
locale-specific way.
D_FMT (LC_TIME)
Return a string that can be used as a format string
for strftime(3) to represent a date in a locale-
specific way.
T_FMT (LC_TIME)
Return a string that can be used as a format string
for strftime(3) to represent a time in a locale-
specific way.
DAY_{1-7} (LC_TIME)
Return name of the n-th day of the week. [Warning:
this follows the US convention DAY_1 = Sunday, not
the international convention (ISO 8601) that Monday
is the first day of the week.]
Return abbreviated name of the n-th day of the
week.
MON_{1-12} (LC_TIME)
Return name of the n-th month.
ABMON_{1-12} (LC_TIME)
Return abbreviated name of the n-th month.
RADIXCHAR (LC_NUMERIC)
Return radix character (decimal dot, decimal comma,
etc.).
THOUSEP (LC_NUMERIC)
Return separator character for thousands (groups of
three digits).
YESEXPR (LC_MESSAGES)
Return a regular expression that can be used with
the regex(3) function to recognize a positive
response to a yes/no question.
NOEXPR (LC_MESSAGES)
Return a regular expression that can be used with
the regex(3) function to recognize a negative
response to a yes/no question.
CRNCYSTR (LC_MONETARY)
Return the currency symbol, preceded by "-" if the
symbol should appear before the value, "+" if the
symbol should appear after the value, or "." if the
symbol should replace the radix character.
The above list covers just some examples of items that can
be requested. For a more detailed list, please consult The
GNU C Library Reference Manual.
RETURN VALUE
If no locale has been selected for the appropriate cate
gory, nl_langinfo returns a pointer to the corresponding
string in the "C" locale.
If item is not valid, a pointer to an empty string is
returned.
This pointer may point to static data that may be
CONFORMING TO
The Single UNIX® Specification, Version 2
SEE ALSO
localeconv(3), setlocale(3), locale(1), locale(7),
charsets(7), The GNU C Library Reference Manual
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