The
nl_langinfo()
function provides access to locale information
in a more flexible way than
localeconv(3)
does.
Individual and additional elements of the locale categories 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 character 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.]
ABDAY_{1-7} (LC_TIME)
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, consult
The GNU C Library Reference Manual.
RETURN VALUE
If no locale has been selected for the appropriate category,
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 overwritten on the
next call to
nl_langinfo()
or
setlocale(3).
This page is part of release 3.14 of the Linux
man-pages
project.
A description of the project,
and information about reporting bugs,
can be found at
http://www.kernel.org/doc/man-pages/.
