LanguageZh.php
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LanguageZh.php
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	<?php
	/**
	* @license GPL-2.0-or-later
	* @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 );
	}

	/** @inheritDoc */
	public function unsegmentForDiff( $text ) {
	return str_replace( "\x0c", '', $text );
	}

	/** @inheritDoc */
	protected function getSearchIndexVariant() {
	return 'zh-hans';
	}

	/** @inheritDoc */
	public function convertForSearchResult( $termsArray ) {
	$terms = implode( '\|', $termsArray );
	$terms = self::convertDoubleWidth( $terms );
	$terms = implode( '\|', $this->getConverterInternal()->autoConvertToAllVariants( $terms ) );
	return array_unique( explode( '\|', $terms ) );
	}
	}