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<?php |
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declare(strict_types=1); |
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namespace Stadly\PasswordPolice\CodeMap; |
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use Stadly\PasswordPolice\CharTree; |
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use Stadly\PasswordPolice\CodeMap; |
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use Stadly\PasswordPolice\Formatter\LengthFilter; |
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use Stadly\PasswordPolice\Formatter\Truncator; |
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final class LeetspeakMap implements CodeMap |
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{ |
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private const ENCODE_MAP = [ |
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'A' => ['4', '@', '∂'], |
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'B' => ['8', 'ß'], |
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'C' => ['(', '¢', '<', '[', '©'], |
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'D' => ['∂'], |
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'E' => ['3', '€', 'є'], |
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'F' => ['ƒ'], |
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'G' => ['6', '9'], |
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'H' => ['#'], |
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'I' => ['1', '!', '|', ':'], |
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'J' => ['¿'], |
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'K' => ['X'], |
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'L' => ['1', '£', 'ℓ'], |
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'O' => ['0', '°'], |
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'R' => ['2', '®', 'Я'], |
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'S' => ['5', '$', '§'], |
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'T' => ['7', '†'], |
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'U' => ['µ'], |
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'W' => ['vv'], |
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'X' => ['×'], |
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'Y' => ['φ', '¥'], |
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'Z' => ['2', '≥'], |
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]; |
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/** |
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* @var array<int, array<string|int, string[]>> Leetspeak code map. |
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*/ |
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private $codeMap = []; |
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/** |
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* @var Truncator[] Formatter for extracting the first characters. |
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*/ |
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private $charExtractors; |
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/** |
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* @param bool $encode Whether the map should encode or decode Leetspeak. |
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*/ |
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public function __construct($encode = false) |
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{ |
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if ($encode) { |
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foreach (self::ENCODE_MAP as $char => $codedChars) { |
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$this->codeMap[mb_strlen($char)][mb_strtoupper($char)] = $codedChars; |
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} |
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} else { |
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foreach (self::ENCODE_MAP as $char => $codedChars) { |
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foreach ($codedChars as $codedChar) { |
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$this->codeMap[mb_strlen($codedChar)][mb_strtoupper($codedChar)][] = $char; |
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} |
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} |
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} |
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foreach (array_keys($this->codeMap + [1 => true]) as $length) { |
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$truncator = new Truncator($length); |
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$truncator->setNext(new LengthFilter($length, $length)); |
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$this->charExtractors[$length] = $truncator; |
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} |
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} |
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/** |
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* {@inheritDoc} |
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*/ |
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public function getMap(CharTree $charTree): array |
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{ |
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$codeMap = []; |
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// Add coded characters. |
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foreach ($this->codeMap as $length => $chars) { |
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foreach ($this->charExtractors[$length]->apply($charTree) as $char) { |
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if (isset($chars[mb_strtoupper($char)])) { |
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$codeMap[$char] = $chars[mb_strtoupper($char)]; |
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} |
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} |
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} |
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// Add uncoded characters. |
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foreach ($this->charExtractors[1]->apply($charTree) as $char) { |
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$codeMap[$char][] = $char; |
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} |
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return $codeMap; |
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} |
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/** |
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* {@inheritDoc} |
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*/ |
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public function getLengths(): array |
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{ |
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return array_keys($this->codeMap); |
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} |
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/** |
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* {@inheritDoc} |
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*/ |
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public function code(string $string): array |
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{ |
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// Add coded characters. |
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$codeMap = $this->codeMap[mb_strlen($string)][mb_strtoupper($string)] ?? []; |
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// Add uncoded character. |
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$codeMap[] = $string; |
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return $codeMap; |
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} |
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} |
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Stadly /
PasswordPolice
