115 lines
3.6 KiB
PHP
115 lines
3.6 KiB
PHP
<?php
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/**
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License along
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* with this program; if not, write to the Free Software Foundation, Inc.,
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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* http://www.gnu.org/copyleft/gpl.html
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*
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* @file
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* @ingroup Language
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*/
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/**
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* Methods for dealing with language codes.
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* @todo Move some of the code-related static methods out of Language into this class
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*
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* @since 1.29
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* @ingroup Language
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*/
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class LanguageCode {
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/**
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* Mapping of deprecated language codes that were used in previous
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* versions of MediaWiki to up-to-date, current language codes.
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*
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* @var array Mapping from language code to language code
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*
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* @since 1.30
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*/
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private static $deprecatedLanguageCodeMapping = [
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// Note that als is actually a valid ISO 639 code (Tosk Albanian), but it
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// was previously used in MediaWiki for Alsatian, which comes under gsw
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'als' => 'gsw',
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'bat-smg' => 'sgs',
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'be-x-old' => 'be-tarask',
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'fiu-vro' => 'vro',
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'roa-rup' => 'rup',
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'zh-classical' => 'lzh',
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'zh-min-nan' => 'nan',
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'zh-yue' => 'yue',
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];
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/**
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* Returns a mapping of deprecated language codes that were used in previous
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* versions of MediaWiki to up-to-date, current language codes.
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*
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* This array is merged into $wgDummyLanguageCodes in Setup.php, along with
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* the fake language codes 'qqq' and 'qqx', which are used internally by
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* MediaWiki's localisation system.
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*
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* @return string[]
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*
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* @since 1.29
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*/
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public static function getDeprecatedCodeMapping() {
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return self::$deprecatedLanguageCodeMapping;
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}
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/**
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* Replace deprecated language codes that were used in previous
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* versions of MediaWiki to up-to-date, current language codes.
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* Other values will returned unchanged.
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*
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* @param string $code Old language code
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* @return string New language code
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*
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* @since 1.30
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*/
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public static function replaceDeprecatedCodes( $code ) {
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if ( isset( self::$deprecatedLanguageCodeMapping[$code] ) ) {
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return self::$deprecatedLanguageCodeMapping[$code];
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}
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return $code;
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}
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/**
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* Get the normalised IETF language tag
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* See unit test for examples.
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* See mediawiki.language.bcp47 for the JavaScript implementation.
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*
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* @param string $code The language code.
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* @return string The language code which complying with BCP 47 standards.
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*
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* @since 1.31
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*/
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public static function bcp47( $code ) {
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$codeSegment = explode( '-', $code );
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$codeBCP = [];
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foreach ( $codeSegment as $segNo => $seg ) {
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// when previous segment is x, it is a private segment and should be lc
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if ( $segNo > 0 && strtolower( $codeSegment[( $segNo - 1 )] ) == 'x' ) {
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$codeBCP[$segNo] = strtolower( $seg );
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// ISO 3166 country code
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} elseif ( ( strlen( $seg ) == 2 ) && ( $segNo > 0 ) ) {
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$codeBCP[$segNo] = strtoupper( $seg );
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// ISO 15924 script code
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} elseif ( ( strlen( $seg ) == 4 ) && ( $segNo > 0 ) ) {
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$codeBCP[$segNo] = ucfirst( strtolower( $seg ) );
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// Use lowercase for other cases
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} else {
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$codeBCP[$segNo] = strtolower( $seg );
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}
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}
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$langCode = implode( '-', $codeBCP );
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return $langCode;
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}
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}
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