41 lines
1.3 KiB
PHP
41 lines
1.3 KiB
PHP
<?php
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/**
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* Japanese (日本語)
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*
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* @addtogroup Language
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*/
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class LanguageJa extends Language {
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function stripForSearch( $string ) {
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# MySQL fulltext index doesn't grok utf-8, so we
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# need to fold cases and convert to hex
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$s = $string;
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# Strip known punctuation ?
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#$s = preg_replace( '/\xe3\x80[\x80-\xbf]/', '', $s ); # U3000-303f
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# Space strings of like hiragana/katakana/kanji
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$hiragana = '(?:\xe3(?:\x81[\x80-\xbf]|\x82[\x80-\x9f]))'; # U3040-309f
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$katakana = '(?:\xe3(?:\x82[\xa0-\xbf]|\x83[\x80-\xbf]))'; # U30a0-30ff
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$kanji = '(?:\xe3[\x88-\xbf][\x80-\xbf]'
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. '|[\xe4-\xe8][\x80-\xbf]{2}'
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. '|\xe9[\x80-\xa5][\x80-\xbf]'
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. '|\xe9\xa6[\x80-\x99])';
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# U3200-9999 = \xe3\x88\x80-\xe9\xa6\x99
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$s = preg_replace( "/({$hiragana}+|{$katakana}+|{$kanji}+)/", ' $1 ', $s );
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# Double-width roman characters: ff00-ff5f ~= 0020-007f
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$s = preg_replace( '/\xef\xbc([\x80-\xbf])/e', 'chr((ord("$1") & 0x3f) + 0x20)', $s );
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$s = preg_replace( '/\xef\xbd([\x80-\x99])/e', 'chr((ord("$1") & 0x3f) + 0x60)', $s );
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# Do general case folding and UTF-8 armoring
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return parent::stripForSearch( $s );
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}
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# Italic is not appropriate for Japanese script
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# Unfortunately most browsers do not recognise this, and render <em> as italic
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function emphasize( $text ) {
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return $text;
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}
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}
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?>
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