# Movable Type (r) Open Source (C) 2001-2009 Six Apart, Ltd.
# This program is distributed under the terms of the
# GNU General Public License, version 2.
#
# $Id$

package MT::I18N::ja;

use strict;
use MT::Util qw(remove_html);
use vars qw( @ISA $PKG );
@ISA = qw( MT::I18N::default );
*PKG = *MT::I18N::default::PKG;

sub DEFAULT_LENGTH_ENTRY_EXCERPT ()                    { 40 }
sub LENGTH_ENTRY_TITLE_FROM_TEXT ()                    { 10 }
sub LENGTH_ENTRY_PING_EXCERPT ()                       { 80 }
sub LENGTH_ENTRY_PING_TITLE_FROM_TEXT ()               { 10 }
sub DISPLAY_LENGTH_MENU_TITLE ()                       { 11 }
sub DISPLAY_LENGTH_EDIT_COMMENT_TITLE ()               { 12 }
sub DISPLAY_LENGTH_EDIT_COMMENT_AUTHOR ()              { 12 }
sub DISPLAY_LENGTH_EDIT_COMMENT_TEXT_SHORT ()          { 23 }
sub DISPLAY_LENGTH_EDIT_COMMENT_TEXT_LONG ()           { 45 }
sub DISPLAY_LENGTH_EDIT_COMMENT_TEXT_BREAK_UP_SHORT () { 30 }
sub DISPLAY_LENGTH_EDIT_COMMENT_TEXT_BREAK_UP_LONG ()  { 80 }
sub DISPLAY_LENGTH_EDIT_PING_TITLE_FROM_EXCERPT ()     { 25 }
sub DISPLAY_LENGTH_EDIT_PING_BREAK_UP ()               { 30 }
sub DISPLAY_LENGTH_EDIT_ENTRY_TITLE ()                 { 11 }
sub DISPLAY_LENGTH_EDIT_ENTRY_TEXT_FROM_EXCERPT ()     { 25 }
sub DISPLAY_LENGTH_EDIT_ENTRY_TEXT_BREAK_UP ()         { 30 }

sub PORTAL_URL()            { 'http://www.sixapart.jp/movabletype/' }
sub SUPPORT_URL()           { 'http://www.sixapart.jp/movabletype/support/' }
sub NEWS_URL()              { 'http://www.sixapart.jp/movabletype/' }
sub NEWSBOX_URL()           { 'http://www.sixapart.jp/movabletype/news/newsbox.html' }
sub LEARNINGNEWS_URL()      { 'http://www.movabletype.jp/newsbox.html' }
sub CATEGORY_NAME_NODASH()  { 1 }
sub DEFAULT_TIMEZONE()      { 9 }
sub MAIL_ENCODING()         { 'ISO-2022-JP' }
sub LOG_EXPORT_ENCODING()   { 'Shift_JIS' }
sub EXPORT_ENCODING()       { 'Shift_JIS' }
sub PUBLISH_CHARSET()       { 'UTF-8' }

my $ENCODING_NAMES = [
    { 'name' => 'guess', 'display_name' => 'AUTO DETECT' },
    { 'name' => 'sjis', 'display_name' => 'SHIFT_JIS' },
    { 'name' => 'euc-jp', 'display_name' => 'EUC-JP' },
    { 'name' => 'utf8', 'display_name' => 'UTF-8' },
    { 'name' => 'ascii', 'display_name' => 'ISO-8859-1' },
    { 'name' => 'WinLatin1', 'display_name' => 'Windows Latin1' },
];
sub ENCODING_NAMES () {
    return $ENCODING_NAMES;
}

my $ENCODINGS_LABEL = {
    'shift_jis' => 'sjis',
    'iso-2022-jp' => 'jis',
    'euc-jp' => 'euc',
    'utf-8' => 'utf8',
    'ascii' => 'utf8',
    'iso-8859-1' => 'ascii',
};

my @ENCODINGS_ENCODE =
    qw( euc-jp shiftjis 7bit-jis iso-2022-jp
        iso-2022-jp-1 jis0201-raw jis0208-raw
        jis0212-raw cp932 Macjapanese );

no warnings 'redefine';
*MT::I18N::encode_text = \&encode_text_ja;
*MT::I18N::guess_encoding = \&guess_encoding_ja;
*MT::I18N::wrap_text = \&wrap_text_ja;
*MT::I18N::first_n = \&first_n_ja;
*MT::I18N::first_n_text = \&first_n_ja;

sub encode_text_ja {
    return __PACKAGE__->encode_text_encode(@_);
}

sub guess_encoding_ja {
    return __PACKAGE__->guess_encoding_encode(@_);
}

sub wrap_text_ja {
    return __PACKAGE__->wrap_text_encode(@_);
}

sub first_n_ja {
    return __PACKAGE__->first_n_encode(@_);
}

sub wrap_text_encode {
    my $class = shift;
    my ($text, $cols, $tab_init, $tab_sub, $enc) = @_;
    return $text if !defined($text) || ($text eq q());
    $text = Encode::encode_utf8($text);
    eval {
        #FULLWIDTH TILDE to WAVE DASH 
        $text =~ s/\x{ff5e}/\x{301c}/g;  
        #PARALLEL TO to DOUBLE VERTICAL LINE 
        $text =~ s/\x{2225}/\x{2016}/g; 
        #FULLWIDTH HYPHEN-MINUS to MINUS SIGN 
        $text =~ s/\x{ff0d}/\x{2212}/g;  
        #FULLWIDTH CENT SIGN to CENT SIGN 
        $text =~ s/\x{ffe0}/\x{00a2}/g; 
        #FULLWIDTH POUND SIGN to POUND SIGN 
        $text =~ s/\x{ffe1}/\x{00a3}/g; 
        #FULLWIDTH NOT SIGN to NOT SIGN 
        $text =~ s/\x{ffe2}/\x{00ac}/g; 
    };

    $cols ||= 72;
    Encode::from_to( $text, 'UTF-8', 'EUC-JP' );
    my $out = '';
    my $str = '';
    my $b = 0;
    for (my $i=0;$i<length($text);$i++) {
        if ( substr($text,$i,2) =~ /[\xA1-\xFE][\xA1-\xFE]/ ||
             substr($text,$i,2) =~ /[\x8E][\xA1-\xDF]/) {
            $str = substr($text,$i,2);
            $i++;
            $b+=2;
        }
        elsif ( substr($text,$i,3) =~ /[\x8F][\xA1-\xFE][\xA1-\xFE]/) {
            $str = substr($text,$i,3);
            $i+=2;
            $b+=2;
        }
        elsif ( substr($text,$i,1) =~ /[\n\r]/ ) {
            $str = substr($text,$i,1);
            $b = 0;
        }
        elsif ( ord(substr($text,$i,1)) < 0x80 ) {
            $str = substr($text,$i,1);
            $b+=1;
        }

        if ($b > $cols) {
            $out .= "\n";
            $b = 0;
        }
        $out .= $str;
    }
    return Encode::decode('EUC-JP', $out);
}

sub first_n_encode {
    my $class = shift;
    my ($text, $length, $enc) = @_;
    require MT::Util;
    $text = MT::Util::remove_html($text);
    $text =~ s/(\r?\n)+/ /g;
    $text = substr($text, 0, $length);
    return $text;
}

sub guess_encoding_encode {
    my $class = shift;
    my ($text) = @_;
    require Encode::Guess;
    Encode::Guess->set_suspects(MT->config('PublishCharset'), @ENCODINGS_ENCODE);
    my $dec = Encode::Guess->guess($text);
    if (ref($dec)) {
        return $dec->name;
    } else {
        # if Encode was failed to guess, re-try for each encodings.
        for my $encode_name ( MT->config('PublishCharset'), @ENCODINGS_ENCODE ) {
            Encode::Guess->set_suspects($encode_name);
            $dec = Encode::Guess->guess($text);
            if (ref($dec)) {
                return $dec->name;
            }
        }
        return MT->config('PublishCharset') || 'utf-8';
    }
}

sub _conv_enc_label {
    my $class = shift;
    my $enc = shift;
    $enc = lc $enc;
    $enc = $ENCODINGS_LABEL->{$enc} ? $ENCODINGS_LABEL->{$enc} : $enc;
    return $enc;
}

1;