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<?php |
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namespace SMW; |
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use Language; |
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use Title; |
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/** |
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* @license GNU GPL v2+ |
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* @since 2.1 |
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* |
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* @author mwjames |
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*/ |
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class Localizer { |
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/** |
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* @var Localizer |
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*/ |
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private static $instance = null; |
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/** |
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* @var Language |
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*/ |
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private $contentLanguage = null; |
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/** |
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* @since 2.1 |
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* |
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* @param Language $contentLanguage |
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*/ |
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public function __construct( Language $contentLanguage ) { |
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$this->contentLanguage = $contentLanguage; |
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} |
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/** |
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* @since 2.1 |
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* |
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* @return Localizer |
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*/ |
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public static function getInstance() { |
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if ( self::$instance === null ) { |
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self::$instance = new self( $GLOBALS['wgContLang'] ); |
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} |
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return self::$instance; |
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} |
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/** |
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* @since 2.1 |
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*/ |
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public static function clear() { |
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self::$instance = null; |
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} |
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/** |
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* @since 2.1 |
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* |
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* @param DIWikiPage|Title|null $title |
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* |
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* @return Language |
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*/ |
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public function getContentLanguage( $title = null ) { |
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if ( $title instanceof DIWikiPage ) { |
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$title = $title->getTitle(); |
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} |
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if ( $title instanceof Title ) { |
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return $title->getPageLanguage(); |
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} |
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return $this->contentLanguage; |
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} |
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/** |
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* @since 2.4 |
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* |
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* @return Language |
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*/ |
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public function getUserLanguage() { |
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return $GLOBALS['wgLang']; |
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} |
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/** |
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* By rule means that |
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* |
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* 1. If the page content language is different from the content language then |
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* use the page content language (as it is clear that the page content was |
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* intended to be in a specific language) |
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* 2. If the page content language and content language are indifferent then |
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* use the user language |
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* 3. If the page content language and user language could not be determined then |
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* use the content language |
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* |
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* General rules: |
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* - Special pages are in the user language |
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* - Display of values (DV) should follow rules outlined above |
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* - Storage of values (DI) should always use the content language |
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* |
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* Notes: |
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* - The page content language is the language in which the content of a page is |
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* written in wikitext |
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* |
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* @since 2.4 |
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* |
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* @param DIWikiPage|Title|null $title |
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* |
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* @return Language |
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*/ |
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public function getPreferredLanguageByRule( $title = null ) { |
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$pageLanguage = ''; |
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$language = $this->getUserLanguage(); |
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if ( $title instanceof DIWikiPage ) { |
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$title = $title->getTitle(); |
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} |
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if ( $title instanceof Title ) { |
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$pageLanguage = $title->getPageLanguage(); |
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} |
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// If the page language is different from the global content language |
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// then we assume that an explicit language object was given otherwise |
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// the Title is using the content language as fallback |
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if ( |
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$pageLanguage !== '' && |
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$pageLanguage->getCode() !== $this->getContentLanguage()->getCode() ) { |
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$language = $pageLanguage; |
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} |
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if ( $language === '' ) { |
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$language = $this->getContentLanguage(); |
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} |
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return $language; |
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} |
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/** |
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* @since 2.4 |
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* |
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* @param string $languageCode |
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* |
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* @return Language |
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*/ |
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public function getLanguage( $languageCode = '' ) { |
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if ( $languageCode === '' ) { |
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return $this->getContentLanguage(); |
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} |
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return Language::factory( $languageCode ); |
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} |
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/** |
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* @since 2.4 |
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* |
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* @param Language|string $languageCode |
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* |
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* @return ExtraneousLanguage |
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*/ |
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public function getExtraneousLanguage( $language = '' ) { |
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$languageCode = $language; |
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if ( $language instanceof Language ) { |
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$languageCode = $language->getCode(); |
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} |
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if ( $languageCode === '' ) { |
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$languageCode = $this->getContentLanguage()->getCode(); |
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} |
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return ExtraneousLanguage::getInstance()->fetchByLanguageCode( $languageCode ); |
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} |
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/** |
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* @since 2.1 |
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* |
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* @param integer $namespaceId |
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* |
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* @return string |
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*/ |
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public function getNamespaceTextById( $namespaceId ) { |
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return $this->contentLanguage->getNsText( $namespaceId ); |
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} |
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/** |
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* @since 2.1 |
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* |
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* @param string $namespaceName |
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* |
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* @return integer|boolean |
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*/ |
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public function getNamespaceIndexByName( $namespaceName ) { |
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return $this->contentLanguage->getNsIndex( str_replace( ' ', '_', $namespaceName ) ); |
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} |
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/** |
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* @since 2.4 |
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* |
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* @param string $languageCode |
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* |
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* @return boolean |
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*/ |
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public static function isSupportedLanguage( $languageCode ) { |
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$languageCode = mb_strtolower( $languageCode ); |
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// FIXME 1.19 doesn't know Language::isSupportedLanguage |
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if ( !method_exists( '\Language', 'isSupportedLanguage' ) ) { |
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return Language::isValidBuiltInCode( $languageCode ); |
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} |
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return Language::isSupportedLanguage( $languageCode ); |
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} |
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/** |
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* @see IETF language tag / BCP 47 standards |
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* |
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* @since 2.4 |
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* |
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* @param string $languageCode |
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* |
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* @return string |
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*/ |
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public static function asBCP47FormattedLanguageCode( $languageCode ) { |
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return wfBCP47( $languageCode ); |
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} |
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/** |
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* @since 2.4 |
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* |
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* @param string &$value |
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* |
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* @return string|false |
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*/ |
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public static function getLanguageCodeFrom( &$value ) { |
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if ( strpos( $value, '@' ) === false ) { |
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return false; |
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} |
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if ( ( $langCode = mb_substr( strrchr( $value, "@" ), 1 ) ) !== '' ) { |
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$value = str_replace( '_', ' ', substr_replace( $value, '', ( mb_strlen( $langCode ) + 1 ) * -1 ) ); |
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} |
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// Do we want to check here whether isSupportedLanguage or not? |
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return $langCode !== '' ? $langCode : false; |
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} |
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/** |
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* @see Language::convertDoubleWidth |
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* |
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* Convert double-width roman characters to single-width. |
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* range: ff00-ff5f ~= 0020-007f |
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* |
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* @param string $string |
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* |
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* @return string |
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*/ |
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public static function convertDoubleWidth( $string ) { |
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static $full = null; |
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static $half = null; |
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if ( $full === null ) { |
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$fullWidth = "0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz"; |
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$halfWidth = "0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz"; |
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// http://php.net/manual/en/function.str-split.php, mb_str_split |
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$length = mb_strlen( $fullWidth, "UTF-8" ); |
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$full = array(); |
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for ( $i = 0; $i < $length; $i += 1 ) { |
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$full[] = mb_substr( $fullWidth, $i, 1, "UTF-8" ); |
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} |
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$half = str_split( $halfWidth ); |
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} |
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return str_replace( $full, $half, trim( $string ) ); |
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} |
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} |
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Instead of super-globals, we recommend to explicitly inject the dependencies of your class. This makes your code less dependent on global state and it becomes generally more testable: