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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 $sign;
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private $arrChunks;
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public function convert(string $input, bool $show = false): string
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{
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$this->currency = $show;
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$this->initData($input);
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$fullResult = '';
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if ($this->iNumber === '0') {
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$fullResult = 'ноль ';
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$this->sign = '';
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}
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$numGroups = count($this->arrChunks);
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return $this->magicConverter($numGroups, $fullResult);
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}
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private function magicConverter(int $numgrps, string $fullres): string
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{
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$this->data = new Data();
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for ($i = $numgrps; $i >= 1; $i--) {
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$currChunk = (int)strrev($this->arrChunks[$i - 1]);
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$this->fixArray($i);
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$preResult = $this->makeWords($currChunk);
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if ($currChunk !== 0 || $i === 1) {
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$preResult .= $this->getRegister($i, $currChunk);
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}
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$fullres .= $preResult;
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}
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return $this->sign . $fullres;
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}
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/**
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* Checks and normalizes input number, defines its sign and returns absolute value.
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* @param string $number - signed input number
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* @property string $sign - sign of a number
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* @return string - unsigned number
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*/
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private function initData(string $number): void
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{
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$this->sign = '';
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if (substr($number, 0, 1) === "-") {
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$this->sign = 'минус ';
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$number = substr($number, 1);
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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", rtrim($chunks));
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}
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/**
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* Change data array so that femine names of units are correct (Russian specific language construct)
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* @param int $group - chunk's group in number from the end
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* @internal param \Converter\Init\Data $data - Data object with data arrays.
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*/
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private function fixArray(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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} else {
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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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}
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private function makeWords(int $cChunk): string
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{
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$resWords = '';
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$cent = (int)($cChunk / 100);
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$decs = $cChunk % 100;
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if ($cent >= 1) {
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$resWords .= $this->data->arrHundreds[$cent - 1];
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}
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if ($decs >= 1 && $decs <= 19) {
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$resWords .= $this->data->arrUnits[$decs - 1];
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return $resWords;
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} elseif ($decs !== 0) {
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$resWords .= $this->data->arrTens[$decs / 10 - 1];
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}
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if ($decs % 10 !== 0) {
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$resWords .= $this->data->arrUnits[$decs % 10 - 1];
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}
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return $resWords;
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}
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private function getRegister(int $chunkPos, int $chunkData): string
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{
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if (!$this->currency && $chunkPos === 1) {
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return '';
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}
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$lastTwoDigits = $chunkData % 100;
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$exponent = $this->data->arrExponents[$chunkPos];
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if ($chunkPos > 3) {
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$chunkPos = 3;
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}
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$index = $this->getSuffix($lastTwoDigits);
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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 getSuffix(int $lastDigits): int
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{
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$last = $lastDigits % 10;
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if ($lastDigits > 10 && $lastDigits < 15) {
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return 2;
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}
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if ($last === 1) {
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return 0;
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}
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if ($last >= 2 && $last <= 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
