00001 <?php
00002
00008 class LanguageJa extends Language {
00009 function stripForSearch( $string ) {
00010 # MySQL fulltext index doesn't grok utf-8, so we
00011 # need to fold cases and convert to hex
00012 $s = $string;
00013
00014 # Strip known punctuation ?
00015 #$s = preg_replace( '/\xe3\x80[\x80-\xbf]/', '', $s ); # U3000-303f
00016
00017 # Space strings of like hiragana/katakana/kanji
00018 $hiragana = '(?:\xe3(?:\x81[\x80-\xbf]|\x82[\x80-\x9f]))'; # U3040-309f
00019 $katakana = '(?:\xe3(?:\x82[\xa0-\xbf]|\x83[\x80-\xbf]))'; # U30a0-30ff
00020 $kanji = '(?:\xe3[\x88-\xbf][\x80-\xbf]'
00021 . '|[\xe4-\xe8][\x80-\xbf]{2}'
00022 . '|\xe9[\x80-\xa5][\x80-\xbf]'
00023 . '|\xe9\xa6[\x80-\x99])';
00024 # U3200-9999 = \xe3\x88\x80-\xe9\xa6\x99
00025 $s = preg_replace( "/({$hiragana}+|{$katakana}+|{$kanji}+)/", ' $1 ', $s );
00026
00027 # Double-width roman characters: ff00-ff5f ~= 0020-007f
00028 $s = preg_replace( '/\xef\xbc([\x80-\xbf])/e', 'chr((ord("$1") & 0x3f) + 0x20)', $s );
00029 $s = preg_replace( '/\xef\xbd([\x80-\x99])/e', 'chr((ord("$1") & 0x3f) + 0x60)', $s );
00030
00031 # Do general case folding and UTF-8 armoring
00032 return parent::stripForSearch( $s );
00033 }
00034
00035 # Italic is not appropriate for Japanese script
00036 # Unfortunately most browsers do not recognise this, and render <em> as italic
00037 function emphasize( $text ) {
00038 return $text;
00039 }
00040 }