LanguageJa.php

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<?php
class LanguageJa extends Language {
 
    public function segmentByWord( $string ) {
        // Strip known punctuation?
        // $s = preg_replace( '/\xe3\x80[\x80-\xbf]/', '', $s ); # U3000-303f
 
        // Space strings of like hiragana/katakana/kanji
        $hiragana = '(?:\xe3(?:\x81[\x80-\xbf]|\x82[\x80-\x9f]))'; # U3040-309f
        $katakana = '(?:\xe3(?:\x82[\xa0-\xbf]|\x83[\x80-\xbf]))'; # U30a0-30ff
        $kanji = '(?:\xe3[\x88-\xbf][\x80-\xbf]'
            . '|[\xe4-\xe8][\x80-\xbf]{2}'
            . '|\xe9[\x80-\xa5][\x80-\xbf]'
            . '|\xe9\xa6[\x80-\x99])';
            # U3200-9999 = \xe3\x88\x80-\xe9\xa6\x99
        $reg = "/({$hiragana}+|{$katakana}+|{$kanji}+)/";
        return self::insertSpace( $string, $reg );
    }
 
    public function emphasize( $text ) {
        return $text;
    }
}