nl_langinfo (3)

NAME

       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 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 charac-
              ter 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  strf-
              time(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 strf-
              time(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  strf-
              time(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  conven-
              tion (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)
              its).

       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 charac-
              ter.

       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 category, nl_lang-
       info 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.

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

GNU                               2001-05-11                    nl_langinfo(3)