NAME
    Amon2::Plugin::L10N - L10N support for Amon2

DESCRIPTION
    Amon2::Plugin::L10N is L10N support plugin for Amon2.

Implementation L10N for your App
  in YourProj.pm
      __PACKAGE__->load_plugins('L10N' => {
          default_lang => 'en',                                  # default is en
          accept_langs => [qw/ en ja zh-tw zh-cn fr /],          # default is ['en']
          po_dir       => 'po',                                  # default is po
      });

  in your YourProj::Web::ViewFunction
      use Text::Xslate ();
      sub l {
          my $string = shift;
          my @args = map { Text::Xslate::html_escape($_) } @_; # escape arguments
          Text::Xslate::mark_raw( YourProj->context->loc($string, @args) );
      }

  in your tmpl/foo.tt
      [% l('Hello! %1', 'username') %]

  in your some class
      package YourProj::M::Foo;
  
      sub bar {
          YourProj->context->loc('hello! %1', $username);
      }

  hook of before language detection
      __PACKAGE__->load_plugins('L10N' => {
          accept_langs          => [qw/ en ja zh-tw zh-cn fr /],
          before_detection_hook => sub {
              my $c = shift;
              return unless ref($c);
  
              my $accept_re = qr/\A(?:en|ja|zh-tw)\z/;
              my $lang = $c->req->param('lang');
              if ($lang && $lang =~ $accept_re) {
                  $c->session->set( lang => $lang );
                  return $lang;
              } elsif (! defined $lang) {
                  $lang = $c->session->get('lang');
                  if ($lang && $lang =~ $accept_re) {
                      return $lang;
                  }
              }
              $c->session->set( lang => '' );
              return; # through
          },
      });

  hook of after language detection
      __PACKAGE__->load_plugins('L10N' => {
          accept_langs         => [qw/ en ja zh zh-tw zh-cn fr /],
          after_detection_hook => sub {
              my($c, $lang) = shift;
              return 'zh' if $lang =~ /\Azh(?:-.+)\z/;
              return $lang;
          },
      });

  for your CLI
      __PACKAGE__->load_plugins('L10N' => {
          default_lang          => 'ja',
          accept_langs          => [qw/ en ja /],
          before_detection_hook => sub {
              my $c = shift;
              return unless $NEV{CLI_MODE}; # CLI_MODE is example key
              return 'ja' if $ENV{LANG} =~ /ja/i;
              return 'en' if $ENV{LANG} =~ /en/i;
              return; # use default lang
          },
      });

  you can set Locale::Maketext::Lexicon options
      # in your MyApp.pm
      __PACKAGE__->load_plugins('L10N' => {
          accept_langs   => [qw/ ja /],
          lexicon_options => {
              _auto => 0,
          },
      });

  you can implement L10N class yourself
      package L10N;
      use strict;
      use warnings;
      use parent 'Locale::Maketext';
      use File::Spec;
  
      use Locale::Maketext::Lexicon +{
          'ja'     => [ Gettext => File::Spec->catfile('t', 'po', 'ja.po') ],
          _preload => 1,
          _style   => 'gettext',
          _decode  => 1,
      };
  
      # in your MyApp.pm
      __PACKAGE__->load_plugins('L10N' => {
          accept_langs => [qw/ ja /],
          l10n_class   => 'L10N',
      });

Translation Step
  installing dependent module of amon2-xgettext.pl
      $ cpanm --width-suggests Amon2::Plugin::L10N

    dependnt module list in the cpanfile file.

  write your application
  run amon2-xgettext.pl
      $ cd your_amon2_proj_base_dir
      $ perl amon2-xgettext.pl en ja fr zh-tw

  edit .po files
      $ vim po/ja.po
      $ vim po/zh-tw.po

AUTHOR
    Kazuhiro Osawa <yappo {at} shibuya {dot} pl>

COPYRIGHT
    Copyright 2013- Kazuhiro Osawa

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

SEE ALSO
    Amon2, Locale::Maketext::Lexicon, HTTP::AcceptLanguage,
    amon2-xgettext.pl