+ // Export information about which page languages will trigger
+ // language conversion. (T153341)
+ public function appendLanguageVariants( $property ) {
+ $langNames = LanguageConverter::$languagesWithVariants;
+ if ( $this->getConfig()->get( 'DisableLangConversion' ) ) {
+ // Ensure result is empty if language conversion is disabled.
+ $langNames = [];
+ }
+ sort( $langNames );
+
+ $data = [];
+ foreach ( $langNames as $langCode ) {
+ $lang = Language::factory( $langCode );
+ if ( $lang->getConverter() instanceof FakeConverter ) {
+ // Only languages which do not return instances of
+ // FakeConverter implement language conversion.
+ continue;
+ }
+ $data[$langCode] = [];
+ ApiResult::setIndexedTagName( $data[$langCode], 'variant' );
+ ApiResult::setArrayType( $data[$langCode], 'kvp', 'code' );
+
+ $variants = $lang->getVariants();
+ sort( $variants );
+ foreach ( $variants as $v ) {
+ $fallbacks = $lang->getConverter()->getVariantFallbacks( $v );
+ if ( !is_array( $fallbacks ) ) {
+ $fallbacks = [ $fallbacks ];
+ }
+ $data[$langCode][$v] = [
+ 'fallbacks' => $fallbacks,
+ ];
+ ApiResult::setIndexedTagName(
+ $data[$langCode][$v]['fallbacks'], 'variant'
+ );
+ }
+ }
+ ApiResult::setIndexedTagName( $data, 'lang' );
+ ApiResult::setArrayType( $data, 'kvp', 'code' );
+
+ return $this->getResult()->addValue( 'query', $property, $data );
+ }
+