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| 1 | <?php |
| 2 | /** |
| 3 | * @license GPL-2.0-or-later |
| 4 | * @file |
| 5 | */ |
| 6 | |
| 7 | namespace MediaWiki\Language; |
| 8 | |
| 9 | use Transliterator; |
| 10 | use Wikimedia\ReplacementArray; |
| 11 | |
| 12 | /** |
| 13 | * A class that extends LanguageConverterSpecific for converts that use |
| 14 | * ICU rule-based transliterators. |
| 15 | * |
| 16 | * @ingroup Language |
| 17 | */ |
| 18 | abstract class LanguageConverterIcu extends LanguageConverterSpecific { |
| 19 | |
| 20 | /** |
| 21 | * @var Transliterator[] |
| 22 | */ |
| 23 | protected $mTransliterators; |
| 24 | |
| 25 | /** |
| 26 | * Creates empty tables. mTransliterators will be used instead. |
| 27 | */ |
| 28 | protected function loadDefaultTables(): array { |
| 29 | $tables = []; |
| 30 | foreach ( $this->getVariants() as $variant ) { |
| 31 | $tables[$variant] = new ReplacementArray(); |
| 32 | } |
| 33 | return $tables; |
| 34 | } |
| 35 | |
| 36 | /** @inheritDoc */ |
| 37 | public function translate( $text, $variant ) { |
| 38 | $text = parent::translate( $text, $variant ); |
| 39 | if ( trim( $text ) ) { |
| 40 | $text = $this->icuTranslate( $text, $variant ); |
| 41 | } |
| 42 | return $text; |
| 43 | } |
| 44 | |
| 45 | /** |
| 46 | * Translate a string to a variant using ICU transliterator. |
| 47 | * |
| 48 | * @param string $text Text to convert |
| 49 | * @param string $variant Variant language code |
| 50 | * @return string Translated text |
| 51 | */ |
| 52 | public function icuTranslate( $text, $variant ) { |
| 53 | return $this->getTransliterators()[$variant]->transliterate( $text ); |
| 54 | } |
| 55 | |
| 56 | /** |
| 57 | * Get the array mapping variants to ICU transliteration rules. |
| 58 | * Subclasses must implement this. |
| 59 | * |
| 60 | * @return string[] |
| 61 | */ |
| 62 | abstract protected function getIcuRules(); |
| 63 | |
| 64 | /** |
| 65 | * Get the array mapping variants to ICU transliterators. |
| 66 | * |
| 67 | * @return Transliterator[] |
| 68 | */ |
| 69 | protected function getTransliterators() { |
| 70 | if ( $this->mTransliterators === null ) { |
| 71 | $this->mTransliterators = []; |
| 72 | foreach ( $this->getIcuRules() as $variant => $rule ) { |
| 73 | // @phan-suppress-next-line PhanTypeMismatchProperty Assume it's not null |
| 74 | $this->mTransliterators[$variant] = Transliterator::createFromRules( $rule ); |
| 75 | } |
| 76 | foreach ( $this->getTransliteratorAliases() as $alias => $variant ) { |
| 77 | // @phan-suppress-next-line PhanTypeMismatchProperty Assume it's not null |
| 78 | $this->mTransliterators[$alias] = $this->mTransliterators[$variant]; |
| 79 | } |
| 80 | } |
| 81 | return $this->mTransliterators; |
| 82 | } |
| 83 | |
| 84 | /** |
| 85 | * Get the array mapping variant aliases to the main variant. |
| 86 | * |
| 87 | * @return string[] |
| 88 | */ |
| 89 | protected function getTransliteratorAliases() { |
| 90 | return []; |
| 91 | } |
| 92 | } |
| 93 | |
| 94 | /** @deprecated class alias since 1.46 */ |
| 95 | class_alias( LanguageConverterIcu::class, 'LanguageConverterIcu' ); |