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<?php |
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namespace Akatsuki\Component\Bencode; |
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use JsonSerializable; |
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/** |
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* Class Encoder |
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* |
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* @package Akatsuki\Component\Bencode |
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* @author Aurimas Niekis <[email protected]> |
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*/ |
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class Encoder |
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{ |
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private $data; |
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public function encode($data): string |
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{ |
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if (is_object($data)) { |
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if ($data instanceof BencodeSerializable) { |
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$data = $data->bencodeSerialize(); |
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} else { |
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$data = (array)$data; |
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} |
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} |
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$this->data = $data; |
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return $this->doEncode(); |
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} |
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private function doEncode($data = null): string |
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{ |
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$data = $data ?? $this->data; |
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if (is_array($data) && (isset ($data[0]) || empty ($data))) { |
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return $this->encodeList($data); |
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} |
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if (is_array($data)) { |
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return $this->encodeDict($data); |
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} |
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if (is_int($data) || is_float($data)) { |
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$data = sprintf('%.0f', round($data, 0)); |
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return $this->encodeInteger($data); |
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} |
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return $this->encodeString($data); |
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} |
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private function encodeInteger($data = null): string |
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{ |
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$data = $data ?? $this->data; |
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return sprintf("i%.0fe", $data); |
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} |
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private function encodeString($data = null): string |
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{ |
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$data = $data ?? $this->data; |
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return sprintf("%d:%s", strlen($data), $data); |
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} |
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private function encodeList(array $data = null): string |
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{ |
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$data = $data ?? $this->data; |
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$list = ''; |
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foreach ($data as $value) { |
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$list .= $this->doEncode($value); |
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} |
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return 'l' . $list . 'e'; |
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} |
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private function encodeDict(array $data = null): string |
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{ |
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$data = $data ?? $this->data; |
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ksort($data); |
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$dict = ''; |
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foreach ($data as $key => $value) { |
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$dict .= $this->encodeString($key) . $this->doEncode($value); |
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} |
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return 'd' . $dict . 'e'; |
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} |
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} |
aurimasniekis /
akatsuki-bencode
