NAME
nllanginfo - query language and locale information SYNOPSIS
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char *nllanginfo(nlitem item); DESCRIPTION The nllanginfo() 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 are: CODESET (LCCTYPE) Return a string with the name of the character encoding used in the selected locale, such as "UTF-8", "ISO-8859-1", or
"ANSIX3.4-1968" (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). DTFMT (LCTIME) 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. DFMT (LCTIME) Return a string that can be used as a format string for strf‐
time(3) to represent a date in a locale-specific way. TFMT (LCTIME) 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} (LCTIME)
Return name of the n-th day of the week. [Warning: this follows the US convention DAY1 = Sunday, not the international conven‐ tion (ISO 8601) that Monday is the first day of the week.] ABDAY{1–7} (LCTIME)
Return abbreviated name of the n-th day of the week. MON{1–12} (LCTIME)
Return name of the n-th month. ABMON{1–12} (LCTIME)
Return abbreviated name of the n-th month. RADIXCHAR (LCNUMERIC) Return radix character (decimal dot, decimal comma, etc.). THOUSEP (LCNUMERIC) Return separator character for thousands (groups of three dig‐ its). YESEXPR (LCMESSAGES) Return a regular expression that can be used with the regex(3) function to recognize a positive response to a yes/no question. NOEXPR (LCMESSAGES) Return a regular expression that can be used with the regex(3) function to recognize a negative response to a yes/no question. CRNCYSTR (LCMONETARY)
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, nllanginfo() 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 nllanginfo() or setlocale(3).
Codeset for enUS defaults to ISO-8859-1 (Latin-1). The Latin-1 default has historical reasons, since all Unix systems originally used
only 8-bit character encoding. For more information about ISO-8859-1 see charsets(7). ATTRIBUTES For an explanation of the terms used in this section, see attributes(7). ┌──────────────┬───────────────┬────────────────┐ │Interface │ Attribute │ Value │ ├──────────────┼───────────────┼────────────────┤
│nllanginfo() │ Thread safety │ MT-Safe locale │ └──────────────┴───────────────┴────────────────┘ 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.
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int main(int argc, char *argv[]) { setlocale(LCCTYPE,""); printf("%s\n",nllanginfo(CODESET)); exit(EXITSUCCESS); } SEE ALSO locale(1), localeconv(3), setlocale(3), charsets(7), locale(7) The GNU C Library Reference Manual COLOPHON
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GNU 2010-10-03 NLLANGINFO(3)