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| 1 | <?php |
| 2 | |
| 3 | namespace MediaWiki\Wikispeech\Segment\TextFilter\Sv; |
| 4 | |
| 5 | /** |
| 6 | * @file |
| 7 | * @ingroup Extensions |
| 8 | * @license GPL-2.0-or-later |
| 9 | */ |
| 10 | |
| 11 | use MediaWiki\Logger\LoggerFactory; |
| 12 | use MediaWiki\Wikispeech\Segment\TextFilter\AbstractDigitsToWords; |
| 13 | use Psr\Log\LoggerInterface; |
| 14 | use RuntimeException; |
| 15 | |
| 16 | /** |
| 17 | * Translates digits to words in Swedish. |
| 18 | * Supports gender of the number 1, i.e. 'en' or 'ett', |
| 19 | * e.g. the difference between 901 as "niohundra ett" and "niohundra en". |
| 20 | * It is however up to the developer to know and select the grammatical context. |
| 21 | * |
| 22 | * @see DigitsToSwedishWords |
| 23 | * @since 0.1.10 |
| 24 | */ |
| 25 | class DigitsToSwedishWords extends AbstractDigitsToWords { |
| 26 | |
| 27 | /** @var LoggerInterface */ |
| 28 | private $logger; |
| 29 | |
| 30 | /** @var string[] ordinal text value of values less than 20: first, second... nineteenth. */ |
| 31 | private const SUB_DECA_ORDINALS = [ |
| 32 | 'PLACEHOLDER FOR INDEX ZERO', |
| 33 | 'första', 'andra', 'tredje', 'fjärde', 'femte', 'sjätte', 'sjunde', 'åttonde', 'nionde', |
| 34 | 'tionde', 'elfte', 'tolfte', 'trettonde', 'fjortonde', |
| 35 | 'femtonde', 'sextonde', 'sjuttonde', 'artonde', 'nittonde' |
| 36 | ]; |
| 37 | |
| 38 | /** @var string[] text values values less than 20: zero, one, two... nineteen. */ |
| 39 | private const SUB_DECAS = [ |
| 40 | 'noll', |
| 41 | 'ONE PLACEHOLDER', 'två', 'tre', 'fyra', 'fem', 'sex', 'sju', 'åtta', 'nio', |
| 42 | 'tio', 'elva', 'tolv', 'tretton', 'fjorton', 'femton', 'sexton', 'sjutton', 'arton', 'nitton' |
| 43 | ]; |
| 44 | |
| 45 | /** @var string[] text value of decas: zero, ten, twenty... ninety. */ |
| 46 | private const DECAS = [ |
| 47 | 'PLACEHOLDER FOR INDEX ZERO', |
| 48 | 'tio', 'tjugo', 'trettio', 'fyrtio', 'femtio', 'sextio', 'sjuttio', 'åttio', 'nittio' |
| 49 | ]; |
| 50 | |
| 51 | /** |
| 52 | * @var array[] <integer value, text value, definiteness, plural suffix> |
| 53 | * |
| 54 | * Definiteness is the singular prefix for the definite noun. |
| 55 | * I.e. there are two species for 'one' in Swedish: 'en' and 'ett'. |
| 56 | */ |
| 57 | private const MAGNITUDES = [ |
| 58 | [ 10, 'tio', null, null ], |
| 59 | [ 100, 'hundra', 'ett', '' ], |
| 60 | [ 1000, 'tusen', 'ett', '' ], |
| 61 | [ 1000000, 'miljon', 'en', 'er' ], |
| 62 | [ 1000000000, 'miljard', 'en', 'er' ], |
| 63 | [ 1000000000000, 'biljon', 'en', 'er' ], |
| 64 | [ 1000000000000000, 'biljard', 'en', 'er' ], |
| 65 | [ 1000000000000000000, 'triljon', 'en', 'er' ], |
| 66 | [ 1000000000000000000000, 'triljard', 'en', 'er' ], |
| 67 | ]; |
| 68 | |
| 69 | /** |
| 70 | * @var string There are two genders for 'one' in Swedish: 'en' and 'ett'. |
| 71 | * Setting this value to 'en' cause an output such as 'nio hundra en' as in a sum, |
| 72 | * while 'ett' cause an output such as 'nio hundra ett' as in the year. |
| 73 | */ |
| 74 | private $one; |
| 75 | |
| 76 | /** |
| 77 | * @since 0.1.10 |
| 78 | * @param string $one There are two species for 'one' in Swedish: 'en' and 'ett'. |
| 79 | */ |
| 80 | public function __construct( string $one = 'ett' ) { |
| 81 | $this->one = $one; |
| 82 | $this->logger = LoggerFactory::getInstance( 'Wikispeech' ); |
| 83 | } |
| 84 | |
| 85 | /** |
| 86 | * Translate integer to ordinal text value, e.g. 1 -> 'första', 2 -> 'andra'. |
| 87 | * |
| 88 | * @since 0.1.10 |
| 89 | * @param int $input |
| 90 | * @return string|null Null if input number is not supported |
| 91 | */ |
| 92 | public function intToOrdinal( int $input ): ?string { |
| 93 | if ( $input < 1 || $input > 99 ) { |
| 94 | // @todo implement support |
| 95 | $this->logger->debug( __METHOD__ . |
| 96 | ': Input must be greater than 1 and less than 99 but was {input}', [ |
| 97 | 'input' => $input, |
| 98 | ] ); |
| 99 | return null; |
| 100 | } |
| 101 | if ( $input < 20 ) { |
| 102 | return self::SUB_DECA_ORDINALS[ $input ]; |
| 103 | } |
| 104 | $floor = intval( floor( $input / 10 ) ); |
| 105 | $word = self::DECAS[ $floor ]; |
| 106 | $leftovers = $input % 10; |
| 107 | if ( $leftovers === 0 ) { |
| 108 | $word .= 'nde'; |
| 109 | } else { |
| 110 | $word .= self::SUB_DECA_ORDINALS[ $leftovers ]; |
| 111 | } |
| 112 | return $word; |
| 113 | } |
| 114 | |
| 115 | /** |
| 116 | * Translate integer to text value, e.g. 1 -> 'ett', 13 -> 'tretton'. |
| 117 | * |
| 118 | * @since 0.1.10 |
| 119 | * @param int $input |
| 120 | * @return string|null Null if input value is not supported. |
| 121 | */ |
| 122 | public function intToWords( int $input ): ?string { |
| 123 | $words = $this->buildWords( $input ); |
| 124 | if ( $words === null ) { |
| 125 | // @todo log? |
| 126 | } |
| 127 | return $words; |
| 128 | } |
| 129 | |
| 130 | /** |
| 131 | * Translate floating point to text value, e.g. the floating point ( 3.14 ) -> 'tre komma ett fyra'. |
| 132 | * |
| 133 | * @since 0.1.10 |
| 134 | * @param int $integer Integer part of the floating value |
| 135 | * @param string|null $decimals Decimals part of the floating value as string value |
| 136 | * @return string|null Null if input number is not supported |
| 137 | */ |
| 138 | public function stringFloatToWords( |
| 139 | int $integer, |
| 140 | ?string $decimals = null |
| 141 | ): ?string { |
| 142 | // @todo assert decimals are all numbers? |
| 143 | if ( $decimals === null ) { |
| 144 | return $this->intToWords( $integer ); |
| 145 | } |
| 146 | $integerWords = $this->intToWords( $integer ); |
| 147 | if ( $integerWords === null ) { |
| 148 | // @todo log? |
| 149 | return null; |
| 150 | } |
| 151 | $numberOfDecimals = strlen( $decimals ); |
| 152 | if ( $numberOfDecimals < 3 && $decimals[0] !== '0' ) { |
| 153 | $decimalWords = $this->intToWords( intval( $decimals ) ); |
| 154 | } else { |
| 155 | $decimalWords = ''; |
| 156 | for ( $decimalIndex = 0; $decimalIndex < $numberOfDecimals; $decimalIndex++ ) { |
| 157 | $decimalWord = $this->intToWords( intval( $decimals[$decimalIndex] ) ); |
| 158 | if ( $decimalWord === null ) { |
| 159 | // @todo log? |
| 160 | return null; |
| 161 | } |
| 162 | if ( $decimalWords !== '' ) { |
| 163 | $decimalWords .= ' '; |
| 164 | } |
| 165 | $decimalWords .= $decimalWord; |
| 166 | } |
| 167 | } |
| 168 | return $integerWords . ' komma ' . $decimalWords; |
| 169 | } |
| 170 | |
| 171 | /** |
| 172 | * @since 0.1.10 |
| 173 | * @param int $inputNumber |
| 174 | * @param array|null $invokingMagnitude |
| 175 | * @return string |
| 176 | */ |
| 177 | private function getSubDeca( |
| 178 | int $inputNumber, |
| 179 | ?array $invokingMagnitude |
| 180 | ): string { |
| 181 | if ( $invokingMagnitude !== null && $inputNumber === 1 ) { |
| 182 | return $invokingMagnitude[2]; |
| 183 | } elseif ( $inputNumber === 1 ) { |
| 184 | return $this->one; |
| 185 | } else { |
| 186 | return self::SUB_DECAS[ $inputNumber ]; |
| 187 | } |
| 188 | } |
| 189 | |
| 190 | /** |
| 191 | * @since 0.1.10 |
| 192 | * @param array $wordsBuilder |
| 193 | * @return string |
| 194 | */ |
| 195 | private function assembleWords( array $wordsBuilder ): string { |
| 196 | return implode( ' ', $wordsBuilder ); |
| 197 | } |
| 198 | |
| 199 | /** |
| 200 | * @since 0.1.10 |
| 201 | * @param int $inputNumber |
| 202 | * @param array $wordsBuilder |
| 203 | * @param array|null $invokingMagnitude |
| 204 | * @return string|null |
| 205 | */ |
| 206 | private function buildWords( |
| 207 | int $inputNumber, |
| 208 | array $wordsBuilder = [], |
| 209 | array $invokingMagnitude = null |
| 210 | ): ?string { |
| 211 | if ( $inputNumber === 0 ) { |
| 212 | if ( count( $wordsBuilder ) === 0 ) { |
| 213 | return self::SUB_DECAS[0]; |
| 214 | } else { |
| 215 | return $this->assembleWords( $wordsBuilder ); |
| 216 | } |
| 217 | } |
| 218 | $leftovers = null; |
| 219 | if ( $inputNumber < 20 ) { |
| 220 | $wordsBuilder[] = $this->getSubDeca( $inputNumber, $invokingMagnitude ); |
| 221 | return $this->assembleWords( $wordsBuilder ); |
| 222 | } elseif ( $inputNumber < 100 ) { |
| 223 | $word = self::DECAS[ intval( floor( $inputNumber / 10 ) ) ]; |
| 224 | $leftovers = $inputNumber % 10; |
| 225 | if ( $leftovers > 0 ) { |
| 226 | $word .= $this->getSubDeca( $leftovers, $invokingMagnitude ); |
| 227 | $wordsBuilder[] = $word; |
| 228 | return $this->assembleWords( $wordsBuilder ); |
| 229 | } |
| 230 | $wordsBuilder[] = $word; |
| 231 | } else { |
| 232 | $found = false; |
| 233 | $magnitudesCount = count( self::MAGNITUDES ); |
| 234 | for ( $i = 2; $i < $magnitudesCount; $i++ ) { |
| 235 | $magnitude = self::MAGNITUDES[ $i ]; |
| 236 | if ( $inputNumber < $magnitude[0] ) { |
| 237 | $previousMagnitude = self::MAGNITUDES[ $i - 1 ]; |
| 238 | $floor = intval( floor( $inputNumber / $previousMagnitude[0] ) ); |
| 239 | $word = $this->buildWords( $floor, [], $previousMagnitude ); |
| 240 | if ( $word === null ) { |
| 241 | // Don't log here, this is a recursive action that will flood the log. |
| 242 | // Perhaps log if invokingMagnitude is null. |
| 243 | return null; |
| 244 | } |
| 245 | $word .= ' '; |
| 246 | $word .= $previousMagnitude[1]; |
| 247 | if ( $floor > 1 ) { |
| 248 | $word .= $previousMagnitude[3]; |
| 249 | } |
| 250 | $wordsBuilder[] = $word; |
| 251 | $leftovers = $inputNumber % $previousMagnitude[0]; |
| 252 | $found = true; |
| 253 | break; |
| 254 | } |
| 255 | } |
| 256 | if ( !$found ) { |
| 257 | $this->logger->debug( __METHOD__ . |
| 258 | ': Input number is too large to be handled: {inputNumber}', [ |
| 259 | 'inputNumber' => $inputNumber, |
| 260 | ] ); |
| 261 | return null; |
| 262 | } |
| 263 | } |
| 264 | |
| 265 | if ( $leftovers === null ) { |
| 266 | throw new RuntimeException( 'Bad code, this should never occur!' ); |
| 267 | } |
| 268 | if ( $leftovers === 0 ) { |
| 269 | return $this->assembleWords( $wordsBuilder ); |
| 270 | } |
| 271 | return $this->buildWords( $leftovers, $wordsBuilder, $invokingMagnitude ); |
| 272 | } |
| 273 | |
| 274 | } |