1 files changed, 394 insertions, 0 deletions
diff --git a/www/wiki/extensions/SemanticMediaWiki/src/Localizer.php b/www/wiki/extensions/SemanticMediaWiki/src/Localizer.php
new file mode 100644
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+++ b/www/wiki/extensions/SemanticMediaWiki/src/Localizer.php
@@ -0,0 +1,394 @@
+<?php
+
+namespace SMW;
+
+use DateTime;
+use Language;
+use SMW\Lang\Lang;
+use SMW\MediaWiki\LocalTime;
+use Title;
+use User;
+
+/**
+ * @license GNU GPL v2+
+ * @since 2.1
+ *
+ * @author mwjames
+ */
+class Localizer {
+
+	/**
+	 * @var Localizer
+	 */
+	private static $instance = null;
+
+	/**
+	 * @var Language
+	 */
+	private $contentLanguage = null;
+
+	/**
+	 * @since 2.1
+	 *
+	 * @param Language $contentLanguage
+	 */
+	public function __construct( Language $contentLanguage ) {
+		$this->contentLanguage = $contentLanguage;
+	}
+
+	/**
+	 * @since 2.1
+	 *
+	 * @return Localizer
+	 */
+	public static function getInstance() {
+
+		if ( self::$instance === null ) {
+			self::$instance = new self( $GLOBALS['wgContLang'] );
+		}
+
+		return self::$instance;
+	}
+
+	/**
+	 * @since 2.1
+	 */
+	public static function clear() {
+		self::$instance = null;
+	}
+
+	/**
+	 * @since 2.1
+	 *
+	 * @return Language
+	 */
+	public function getContentLanguage() {
+		return $this->contentLanguage;
+	}
+
+	/**
+	 * @since 2.4
+	 *
+	 * @return Language
+	 */
+	public function getUserLanguage() {
+		return $GLOBALS['wgLang'];
+	}
+
+	/**
+	 * @since 3.0
+	 *
+	 * @param User|null $user
+	 *
+	 * @return boolean
+	 */
+	public function hasLocalTimeOffsetPreference( $user = null ) {
+
+		if ( !$user instanceof User ) {
+			$user = $GLOBALS['wgUser'];
+		}
+
+		return $user->getOption( 'smw-prefs-general-options-time-correction' );
+	}
+
+	/**
+	 * @since 3.0
+	 *
+	 * @param DateTime $dateTime
+	 * @param User|null $user
+	 *
+	 * @return DateTime
+	 */
+	public function getLocalTime( DateTime $dateTime, $user = null ) {
+
+		if ( !$user instanceof User ) {
+			$user = $GLOBALS['wgUser'];
+		}
+
+		LocalTime::setLocalTimeOffset(
+			$GLOBALS['wgLocalTZoffset']
+		);
+
+		return LocalTime::getLocalizedTime( $dateTime, $user );
+	}
+
+	/**
+	 * @note
+	 *
+	 * 1. If the page content language is available use it as preferred language
+	 * (as it is clear that the page content was intended to be in a specific
+	 * language)
+	 * 2. If no page content language was assigned use the global content
+	 * language
+	 *
+	 * General rules:
+	 * - Special pages are in the user language
+	 * - Display of values (DV) should use the user language if available otherwise
+	 * use the content language as fallback
+	 * - Storage of values (DI) should always use the content language
+	 *
+	 * Notes:
+	 * - The page content language is the language in which the content of a page is
+	 * written in wikitext
+	 *
+	 * @since 2.4
+	 *
+	 * @param DIWikiPage|Title|null $title
+	 *
+	 * @return Language
+	 */
+	public function getPreferredContentLanguage( $title = null ) {
+
+		$language = '';
+
+		if ( $title instanceof DIWikiPage ) {
+			$title = $title->getTitle();
+		}
+
+		// If the page language is different from the global content language
+		// then we assume that an explicit language object was given otherwise
+		// the Title is using the content language as fallback
+		if ( $title instanceof Title ) {
+
+			// Avoid "MWUnknownContentModelException ... " when content model
+			// is not registered
+			try {
+				$language = $title->getPageLanguage();
+			} catch ( \Exception $e ) {
+
+			}
+		}
+
+		return $language instanceof Language ? $language : $this->getContentLanguage();
+	}
+
+	/**
+	 * @since 2.4
+	 *
+	 * @param string $languageCode
+	 *
+	 * @return Language
+	 */
+	public function getLanguage( $languageCode = '' ) {
+
+		if ( $languageCode === '' || !$languageCode || $languageCode === null ) {
+			return $this->getContentLanguage();
+		}
+
+		return Language::factory( $languageCode );
+	}
+
+	/**
+	 * @since 2.4
+	 *
+	 * @param Language|string $languageCode
+	 *
+	 * @return Lang
+	 */
+	public function getLang( $language = '' ) {
+
+		$languageCode = $language;
+
+		if ( $language instanceof Language ) {
+			$languageCode = $language->getCode();
+		}
+
+		if ( $languageCode === '' || !$languageCode || $languageCode === null ) {
+			$languageCode = $this->getContentLanguage()->getCode();
+		}
+
+		return Lang::getInstance()->fetch( $languageCode );
+	}
+
+	/**
+	 * @since 2.1
+	 *
+	 * @param integer $index
+	 *
+	 * @return string
+	 */
+	public function getNamespaceTextById( $index ) {
+		return str_replace( '_', ' ', $this->contentLanguage->getNsText( $index ) );
+	}
+
+	/**
+	 * @since 2.5
+	 *
+	 * @param integer $index
+	 *
+	 * @return string
+	 */
+	public function getCanonicalNamespaceTextById( $index ) {
+
+		$canonicalNames = NamespaceManager::getCanonicalNames();
+
+		if ( isset( $canonicalNames[$index] ) ) {
+			return $canonicalNames[$index];
+		}
+
+		return \MWNamespace::getCanonicalName( $index );
+	}
+
+	/**
+	 * @since 2.1
+	 *
+	 * @param string $namespaceName
+	 *
+	 * @return integer|boolean
+	 */
+	public function getNamespaceIndexByName( $namespaceName ) {
+		return $this->contentLanguage->getNsIndex( str_replace( ' ', '_', $namespaceName ) );
+	}
+
+	/**
+	 * @since 2.4
+	 *
+	 * @param string $languageCode
+	 *
+	 * @return boolean
+	 */
+	public static function isKnownLanguageTag( $languageCode ) {
+
+		$languageCode = mb_strtolower( $languageCode );
+
+		// FIXME 1.19 doesn't know Language::isKnownLanguageTag
+		if ( !method_exists( '\Language', 'isKnownLanguageTag' ) ) {
+			return Language::isValidBuiltInCode( $languageCode );
+		}
+
+		return Language::isKnownLanguageTag( $languageCode );
+	}
+
+	/**
+	 * @see IETF language tag / BCP 47 standards
+	 *
+	 * @since 2.4
+	 *
+	 * @param string $languageCode
+	 *
+	 * @return string
+	 */
+	public static function asBCP47FormattedLanguageCode( $languageCode ) {
+		if ( !is_callable( [ '\LanguageCode', 'bcp47' ] ) ) {
+			// Backwards compatibility: remove once MW 1.30 is no
+			// longer supported (#3179)
+			return wfBCP47( $languageCode );
+		}
+		return \LanguageCode::bcp47( $languageCode );
+	}
+
+	/**
+	 * @deprecated 2.5, use Localizer::getAnnotatedLanguageCodeFrom instead
+	 * @since 2.4
+	 *
+	 * @param string &$value
+	 *
+	 * @return string|false
+	 */
+	public static function getLanguageCodeFrom( &$value ) {
+		return self::getAnnotatedLanguageCodeFrom( $value );
+	}
+
+	/**
+	 * @since 2.5
+	 *
+	 * @param integer $index
+	 * @param string $text
+	 *
+	 * @return string
+	 */
+	public function createTextWithNamespacePrefix( $index, $text ) {
+		return $this->getNamespaceTextById( $index ) . ':' . $text;
+	}
+
+	/**
+	 * @since 2.5
+	 *
+	 * @param integer $ns
+	 * @param string $url
+	 *
+	 * @return string
+	 */
+	public function getCanonicalizedUrlByNamespace( $index, $url ) {
+
+		$namespace = $this->getNamespaceTextById( $index );
+
+		if ( strpos( $url, 'title=' ) !== false ) {
+			return str_replace(
+				[
+					'title=' . wfUrlencode( $namespace ) . ':',
+					'title=' . $namespace . ':'
+				],
+				'title=' . $this->getCanonicalNamespaceTextById( $index ) .':',
+				$url
+			);
+		}
+
+		return str_replace(
+			[
+				wfUrlencode( '/' . $namespace .':' ),
+				'/' . $namespace .':'
+			],
+			'/' . $this->getCanonicalNamespaceTextById( $index ) . ':',
+			$url
+		);
+	}
+
+	/**
+	 * @since 2.4
+	 *
+	 * @param string &$value
+	 *
+	 * @return string|false
+	 */
+	public static function getAnnotatedLanguageCodeFrom( &$value ) {
+
+		if ( strpos( $value, '@' ) === false ) {
+			return false;
+		}
+
+		if ( ( $langCode = mb_substr( strrchr( $value, "@" ), 1 ) ) !== '' ) {
+			$value = str_replace( '_', ' ', substr_replace( $value, '', ( mb_strlen( $langCode ) + 1 ) * -1 ) );
+		}
+
+		// Do we want to check here whether isKnownLanguageTag or not?
+		if ( $langCode !== '' && ctype_alpha( str_replace( [ '-' ], '', $langCode ) ) ) {
+			return $langCode;
+		}
+
+		return false;
+	}
+
+	/**
+	 * @see Language::convertDoubleWidth
+	 *
+	 * Convert double-width roman characters to single-width.
+	 * range: ff00-ff5f ~= 0020-007f
+	 *
+	 * @param string $string
+	 *
+	 * @return string
+	 */
+	public static function convertDoubleWidth( $string ) {
+		static $full = null;
+		static $half = null;
+
+		if ( $full === null ) {
+			$fullWidth = "０１２３４５６７８９ＡＢＣＤＥＦＧＨＩＪＫＬＭＮＯＰＱＲＳＴＵＶＷＸＹＺａｂｃｄｅｆｇｈｉｊｋｌｍｎｏｐｑｒｓｔｕｖｗｘｙｚ";
+			$halfWidth = "0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz";
+
+			// http://php.net/manual/en/function.str-split.php, mb_str_split
+			$length = mb_strlen( $fullWidth, "UTF-8" );
+			$full = [];
+
+			for ( $i = 0; $i < $length; $i += 1 ) {
+				$full[] = mb_substr( $fullWidth, $i, 1, "UTF-8" );
+			}
+
+			$half = str_split( $halfWidth );
+		}
+
+		return str_replace( $full, $half, trim( $string ) );
+	}
+
+}