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<?php |
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/** |
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* User: onnov |
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* Date: 02.09.2019 |
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* Time: 18:25 |
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*/ |
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declare(strict_types=1); |
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namespace Onnov\DetectEncoding; |
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/** |
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* Class CodePage |
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* |
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* @package Onnov\DetectEncoding |
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*/ |
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class CodePage |
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{ |
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/** |
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* Method to get a custom encoding range |
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* |
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* @param string $uppercaseLetters |
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* @param string $lowercaseLetters |
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* @param string $encoding |
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* |
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* @return array<string, array<string, string>> |
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*/ |
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1 |
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public function getRange( |
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string $uppercaseLetters, |
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string $lowercaseLetters, |
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string $encoding |
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): array { |
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return [ |
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$encoding => [ |
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'upper' => $this->getRangeStr($this->getLetterArr( |
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$uppercaseLetters, |
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$encoding |
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)), |
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'lower' => $this->getRangeStr($this->getLetterArr( |
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$lowercaseLetters, |
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$encoding |
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)), |
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], |
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]; |
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} |
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/** |
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* @param array<int, int|string> $array |
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* |
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* @return string |
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*/ |
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private function getRangeStr(array $array): string |
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{ |
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$ranges = []; |
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$last = null; |
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foreach ($array as $current) { |
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if ($current > $last + 1) { |
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$lastKey = array_key_last($ranges); |
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if (null !== $lastKey) { |
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$ranges[$lastKey][1] = $last; |
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} |
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$ranges[] = [$current, null]; |
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} |
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$last = (int)$current; |
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} |
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$lastKey = array_key_last($ranges); |
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$ranges[$lastKey][1] = $last; |
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$stringIntervals = []; |
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foreach ($ranges as $interval) { |
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if (current($interval) < end($interval)) { |
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$stringIntervals[] = implode('-', $interval); |
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continue; |
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} |
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$stringIntervals[] = array_pop($interval); |
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} |
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return implode(', ', $stringIntervals); |
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} |
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/** |
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* @param string $strLetters |
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* @param string $encoding |
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* |
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* @return array<int, int|string> |
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*/ |
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private function getLetterArr(string &$strLetters, string $encoding): array |
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{ |
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$res = []; |
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$str = iconv('utf-8', $encoding . '//IGNORE', $strLetters); |
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if (is_string($str)) { |
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$res = array_keys(count_chars($str, 1)); |
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} |
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return $res; |
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} |
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} |
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onnov /
detect-encoding
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