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<?php
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declare(strict_types = 1);
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namespace Converter\Core;
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use Converter\Init\Data;
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/**
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* Converts a number up to 1e+510 to its text representation e.g. 312 -> триста двенадцать (Russian only).
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* @author Sergey Kanashin <[email protected]>
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* @copyright 2003-2017
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*/
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final class Number2Text
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{
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private $data;
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private $iNumber;
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private $currency;
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private $arrChunks;
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public function currency(bool $show = true)
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{
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$this->currency = $show;
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}
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public function convert(string $input): string
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{
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$this->initData($input);
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$input === '0' ? $fullResult = 'ноль ' : $fullResult = '';
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$numGroups = count($this->arrChunks);
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$this->data = new Data();
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for ($i = $numGroups; $i >= 1; $i--) {
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$fullResult .= $this->getWords($i);
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}
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return $fullResult;
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}
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private function initData(string $number)
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{
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$this->iNumber = preg_replace("/[^\d]/", "", $number);
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$rvrsValue = strrev($this->iNumber);
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$chunks = chunk_split($rvrsValue, 3);
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$this->arrChunks = explode("\r\n", $chunks);
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}
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private function getWords(int $iterator): string
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{
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$currChunk = (int)strrev($this->arrChunks[$iterator - 1]);
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$iterator < 3 ? $this->switchArray($iterator) : true;
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$preResult = $this->makeWords($currChunk);
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if ($currChunk !== 0 || $iterator === 1) {
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$preResult .= $this->getExponent($iterator, $currChunk);
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}
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return $preResult;
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}
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private function switchArray(int $group)
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{
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if ($group === 2) {
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$this->data->arrUnits[0] = 'одна ';
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$this->data->arrUnits[1] = 'две ';
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return;
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}
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$this->data->arrUnits[0] = 'один ';
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$this->data->arrUnits[1] = 'два ';
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}
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private function makeWords(int $cChunk): string
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{
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$decs = $cChunk % 100;
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$resWords = $this->getCentum($cChunk);
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if ($decs === 0) {
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return $resWords;
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}
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$resWords .= $this->getDecem($decs);
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return $resWords;
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}
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private function getCentum(int $chunk): string
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{
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$cent = (int)($chunk / 100);
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if ($cent >= 1) {
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return $this->data->arrHundreds[$cent - 1];
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}
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return '';
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}
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private function getDecem(int $decs): string
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{
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$result = '';
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if ($decs < 20) {
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$result .= $this->data->arrUnits[$decs - 1];
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return $result;
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}
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$result .= $this->data->arrTens[$decs / 10 - 1];
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if ($decs % 10 !== 0) {
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$result .= $this->data->arrUnits[$decs % 10 - 1];
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}
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return $result;
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}
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private function getExponent(int $chunkPos, int $chunkData): string
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{
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if (!$this->currency && $chunkPos === 1) {
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return '';
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}
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$exponent = $this->data->arrExponents[$chunkPos];
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$chunkPos > 3 ? $chunkPos = 3 : true;
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$index = $this->getIndex($chunkData % 100);
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$suffix = $this->data->arrSuffix[$index][$chunkPos];
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return $exponent . $suffix;
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}
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private function getIndex(int $lastDigits): int
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{
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$last = $lastDigits % 10;
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if ($lastDigits >= 11 && $lastDigits <= 14) {
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return 2;
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}
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return $this->checkSingleChunk($last);
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}
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public function checkSingleChunk($digit)
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{
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if ($digit === 1) {
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return 0;
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}
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if ($digit >= 2 && $digit <= 4) {
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return 1;
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}
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return 2;
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}
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}
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illusive-man /
converter
