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<?php |
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namespace Knik\Binn\Encoder\Containers; |
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use Knik\Binn\Binn; |
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use Knik\Binn\Contracts\BinnValueEncoder; |
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use Knik\Binn\Encoder\EncoderCollection; |
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use Knik\Binn\Encoder\Packer; |
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use Knik\Binn\Exceptions\InvalidArrayException; |
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class BinnListEncoder implements BinnValueEncoder |
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{ |
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public const TYPE = Binn::BINN_LIST; |
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/** @var EncoderCollection */ |
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private $encoders; |
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public function __construct(EncoderCollection $encoders) |
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{ |
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$this->encoders = $encoders; |
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} |
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public function encode($value): string |
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{ |
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if ($this->isArrayAssoc($value)) { |
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throw new InvalidArrayException('Array should be sequential'); |
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} |
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$encodedItems = ''; |
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foreach ($value as $item) { |
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/** @var BinnValueEncoder $encoder */ |
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foreach ($this->encoders->getAll() as $encoder) { |
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if ($encoder->supportsEncoding($item)) { |
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$encodedItems .= $encoder->encode($item); |
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break; |
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} |
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} |
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} |
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$encodedType = Packer::packUint8(self::TYPE); |
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$encodedCount = Packer::packSize(count($value)); |
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$encodedSize = Packer::packSize( |
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strlen($encodedType) + strlen($encodedCount) + strlen($encodedItems), |
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true |
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); |
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return $encodedType |
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. $encodedSize |
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. $encodedCount |
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. $encodedItems; |
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} |
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public function supportsEncoding($value): bool |
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{ |
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return is_array($value) && !$this->isArrayAssoc($value); |
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} |
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private function isArrayAssoc($arr) |
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{ |
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$arr = (array)$arr; |
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if ([] === $arr) { |
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return false; |
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} |
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return array_keys($arr) !== range(0, count($arr) - 1); |
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} |
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} |
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et-nik /
binn-php
