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   1  <?php
   2  /**
   3   * Japanese (日本語) specific code.
   4   *
   5   * This program is free software; you can redistribute it and/or modify
   6   * it under the terms of the GNU General Public License as published by
   7   * the Free Software Foundation; either version 2 of the License, or
   8   * (at your option) any later version.
   9   *
  10   * This program is distributed in the hope that it will be useful,
  11   * but WITHOUT ANY WARRANTY; without even the implied warranty of
  12   * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
  13   * GNU General Public License for more details.
  14   *
  15   * You should have received a copy of the GNU General Public License along
  16   * with this program; if not, write to the Free Software Foundation, Inc.,
  17   * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
  18   * http://www.gnu.org/copyleft/gpl.html
  19   *
  20   * @file
  21   * @ingroup Language
  22   */
  23  
  24  /**
  25   * Japanese (日本語)
  26   *
  27   * @ingroup Language
  28   */
  29  class LanguageJa extends Language {
  30  
  31      /**
  32       * @param string $string
  33       * @return string
  34       */
  35  	function segmentByWord( $string ) {
  36          // Strip known punctuation ?
  37          // $s = preg_replace( '/\xe3\x80[\x80-\xbf]/', '', $s ); # U3000-303f
  38  
  39          // Space strings of like hiragana/katakana/kanji
  40          $hiragana = '(?:\xe3(?:\x81[\x80-\xbf]|\x82[\x80-\x9f]))'; # U3040-309f
  41          $katakana = '(?:\xe3(?:\x82[\xa0-\xbf]|\x83[\x80-\xbf]))'; # U30a0-30ff
  42          $kanji = '(?:\xe3[\x88-\xbf][\x80-\xbf]'
  43              . '|[\xe4-\xe8][\x80-\xbf]{2}'
  44              . '|\xe9[\x80-\xa5][\x80-\xbf]'
  45              . '|\xe9\xa6[\x80-\x99])';
  46              # U3200-9999 = \xe3\x88\x80-\xe9\xa6\x99
  47          $reg = "/({$hiragana}+|{$katakana}+|{$kanji}+)/";
  48          $s = self::insertSpace( $string, $reg );
  49          return $s;
  50      }
  51  
  52      /**
  53       * Italic is not appropriate for Japanese script
  54       * Unfortunately most browsers do not recognise this, and render <em> as italic
  55       *
  56       * @param string $text
  57       * @return string
  58       */
  59  	function emphasize( $text ) {
  60          return $text;
  61      }
  62  }