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NL_LANGINFO(3)             Linux Programmer's Manual            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 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  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)
              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 dig-
              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, consult The GNU C Library  Refer-
       ence Manual.
RETURN VALUE
       If no locale has been selected by setlocale(3) for the appropriate cat-
       egory, 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).
CONFORMING TO
       SUSv2, POSIX.1-2001.
EXAMPLE
       The following program sets the character type locale according  to  the
       environment and queries the terminal character set.
       #include <langinfo.h>
       #include <locale.h>
       #include <stdio.h>
       #include <stdlib.h>
       int
       main(int argc, char *argv[])
       {
           setlocale(LC_CTYPE,"");
           printf("%s\n",nl_langinfo(CODESET));
           exit(EXIT_SUCCESS);
       }
SEE ALSO
       locale(1), localeconv(3), setlocale(3), charsets(7), locale(7)
       The GNU C Library Reference Manual
COLOPHON
       This  page  is  part of release 3.53 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/.

GNU                               2010-10-03                    NL_LANGINFO(3)