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<?php
namespace SMW\Utils;
/**
* @license GNU GPL v2+
* @since 3.0
*
* @author mwjames
*/
class CharExaminer {
const CYRILLIC = 'CYRILLIC';
const LATIN = 'LATIN';
const HIRAGANA_KATAKANA = 'HIRAGANA_KATAKANA';
const HANGUL = 'HANGUL';
const CJK_UNIFIED = 'CJK_UNIFIED';
const HAN = 'HAN';
/**
* @since 3.0
*
* @param string $text
*
* @return boolean
*/
public static function isCJK( $text ) {
if ( self::contains( self::HAN, $text ) ) {
return true;
}
if ( self::contains( self::HIRAGANA_KATAKANA, $text ) ) {
return true;
}
if ( self::contains( self::HANGUL, $text ) ) {
return true;
}
if ( self::contains( self::CJK_UNIFIED, $text ) ) {
return true;
}
return false;
}
/**
* @see http://jrgraphix.net/research/unicode_blocks.php
* @since 0.1
*
* @param string $type
* @param string $text
*
* @return boolean
*/
public static function contains( $type, $text ) {
if ( $type === self::CYRILLIC ) {
return preg_match('/\p{Cyrillic}/u', $text ) > 0;
}
if ( $type === self::LATIN ) {
return preg_match('/\p{Latin}/u', $text ) > 0;
}
if ( $type === self::HAN ) {
return preg_match('/\p{Han}/u', $text ) > 0;
}
if ( $type === self::HIRAGANA_KATAKANA ) {
return preg_match('/[\x{3040}-\x{309F}]/u', $text ) > 0 || preg_match('/[\x{30A0}-\x{30FF}]/u', $text ) > 0; // isHiragana || isKatakana
}
if ( $type === self::HANGUL ) {
return preg_match('/[\x{3130}-\x{318F}]/u', $text ) > 0 || preg_match('/[\x{AC00}-\x{D7AF}]/u', $text ) > 0;
}
// @see https://en.wikipedia.org/wiki/CJK_Unified_Ideographs
// Chinese, Japanese and Korean (CJK) scripts share common characters
// known as CJK characters
if ( $type === self::CJK_UNIFIED ) {
return preg_match('/[\x{4e00}-\x{9fa5}]/u', $text ) > 0;
}
return false;
}
}
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