MirOS Manual: I18N::Langinfo(3p)


ext::I18N::LanginPerlLProgrammersext::I18N::Langinfo::Langinfo(3p)

NAME

     I18N::Langinfo - query locale information

SYNOPSIS

       use I18N::Langinfo;

DESCRIPTION

     The langinfo() function queries various locale information
     that can be used to localize output and user interfaces.
     The langinfo() requires one numeric argument that identifies
     the locale constant to query: if no argument is supplied, $_
     is used.  The numeric constants appropriate to be used as
     arguments are exportable from I18N::Langinfo.

     The following example will import the langinfo() function
     itself and three constants to be used as arguments to lan-
     ginfo(): a constant for the abbreviated first day of the
     week (the numbering starts from Sunday = 1) and two more
     constants for the affirmative and negative answers for a
     yes/no question in the current locale.

         use I18N::Langinfo qw(langinfo ABDAY_1 YESSTR NOSTR);

         my ($abday_1, $yesstr, $nostr) = map { langinfo } qw(ABDAY_1 YESSTR NOSTR);

         print "$abday_1? [$yesstr/$nostr] ";

     In other words, in the "C" (or English) locale the above
     will probably print something like:

         Sun? [yes/no]

     but under a French locale

         dim? [oui/non]

     The usually available constants are

         ABDAY_1 ABDAY_2 ABDAY_3 ABDAY_4 ABDAY_5 ABDAY_6 ABDAY_7
         ABMON_1 ABMON_2 ABMON_3 ABMON_4 ABMON_5 ABMON_6
         ABMON_7 ABMON_8 ABMON_9 ABMON_10 ABMON_11 ABMON_12
         DAY_1 DAY_2 DAY_3 DAY_4 DAY_5 DAY_6 DAY_7
         MON_1 MON_2 MON_3 MON_4 MON_5 MON_6
         MON_7 MON_8 MON_9 MON_10 MON_11 MON_12

     for abbreviated and full length days of the week and months
     of the year,

         D_T_FMT D_FMT T_FMT

     for the date-time, date, and time formats used by the
     strftime() function (see POSIX)

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ext::I18N::LanginPerlLProgrammersext::I18N::Langinfo::Langinfo(3p)

         AM_STR PM_STR T_FMT_AMPM

     for the locales for which it makes sense to have ante meri-
     diem and post meridiem time formats,

         CODESET CRNCYSTR RADIXCHAR

     for the character code set being used (such as "ISO8859-1",
     "cp850", "koi8-r", "sjis", "utf8", etc.), for the currency
     string, for the radix character used between the integer and
     the fractional part of decimal numbers (yes, this is redun-
     dant with POSIX::localeconv())

         YESSTR YESEXPR NOSTR NOEXPR

     for the affirmative and negative responses and expressions,
     and

         ERA ERA_D_FMT ERA_D_T_FMT ERA_T_FMT

     for the Japanese Emperor eras (naturally only defined under
     Japanese locales).

     See your langinfo(3) for more information about the avail-
     able constants.  (Often this means having to look directly
     at the langinfo.h C header file.)

     Note that unfortunately none of the above constants are
     guaranteed to be available on a particular platform.  To be
     on the safe side you can wrap the import in an eval like
     this:

         eval {
             require I18N::Langinfo;
             I18N::Langinfo->import(qw(langinfo CODESET));
             $codeset = langinfo(CODESET()); # note the ()
         };
         if (!$@) { ... failed ... }

     EXPORT

     Nothing is exported by default.

SEE ALSO

     perllocale, "localeconv" in POSIX, "setlocale" in POSIX,
     nl_langinfo(3).

     The langinfo() is just a wrapper for the C nl_langinfo()
     interface.

AUTHOR

     Jarkko Hietaniemi, <jhi@hut.fi>

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COPYRIGHT AND LICENSE

     Copyright 2001 by Jarkko Hietaniemi

     This library is free software; you can redistribute it
     and/or modify it under the same terms as Perl itself.

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