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<?php
/**
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License along
* with this program; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
* http://www.gnu.org/copyleft/gpl.html
*
* @file
*/
/**
* Chinese-specific code.
*
* This handles both Traditional and Simplified Chinese.
* Right now, we distinguish `zh_hans`, `zh_hant`, `zh_cn`, `zh_tw`, `zh_sg`,
* and `zh_hk`.
*
* @ingroup Languages
*/
class LanguageZh extends LanguageZh_hans {
/**
* Add a formfeed character between each non-ASCII character, so that
* "word-level" diffs will effectively operate on a character level. The FF
* characters are stripped out by unsegmentForDiff().
*
* We use FF because it is the least used character that is matched by
* PCRE's \s class.
*
* In the unlikely event that an FF character appears in the input, it will
* be displayed in the diff as a replacement character.
*
* @param string $text
* @return string
*/
public function segmentForDiff( $text ) {
$text = str_replace( "\x0c", "\u{FFFD}", $text );
return preg_replace( '/[\xc0-\xff][\x80-\xbf]*/', "\x0c$0", $text );
}
public function unsegmentForDiff( $text ) {
return str_replace( "\x0c", '', $text );
}
protected function getSearchIndexVariant() {
return 'zh-hans';
}
public function convertForSearchResult( $termsArray ) {
$terms = implode( '|', $termsArray );
$terms = self::convertDoubleWidth( $terms );
$terms = implode( '|', $this->getConverterInternal()->autoConvertToAllVariants( $terms ) );
return array_unique( explode( '|', $terms ) );
}
}
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