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<?php |
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namespace BitWasp\Bitcoin\Serializer\Block; |
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use BitWasp\Bitcoin\Block\BlockInterface; |
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use BitWasp\Bitcoin\Network\NetworkInterface; |
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use BitWasp\Bitcoin\Serializer\Types; |
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use BitWasp\Buffertools\Buffer; |
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use BitWasp\Buffertools\Buffertools; |
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use BitWasp\Buffertools\Parser; |
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class BitcoindBlockSerializer |
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{ |
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/** |
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* @var NetworkInterface |
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*/ |
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private $network; |
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/** |
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* @var BlockSerializer |
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*/ |
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private $blockSerializer; |
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/** |
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* @param NetworkInterface $network |
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* @param BlockSerializer $blockSerializer |
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*/ |
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public function __construct(NetworkInterface $network, BlockSerializer $blockSerializer) |
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{ |
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$this->blockSerializer = $blockSerializer; |
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$this->magic = Types::bytestringle(4); |
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$this->size = Types::uint32le(); |
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$this->network = $network; |
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} |
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/** |
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* @param BlockInterface $block |
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* @return \BitWasp\Buffertools\BufferInterface |
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*/ |
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public function serialize(BlockInterface $block) |
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{ |
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$buffer = $this->blockSerializer->serialize($block); |
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$size = $buffer->getSize(); |
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return new Buffer( |
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Buffertools::flipBytes(pack("H*", $this->network->getNetMagicBytes())) . |
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$this->size->write($size) . |
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$buffer->getBinary() |
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); |
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} |
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/** |
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* @param Parser $parser |
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* @return BlockInterface |
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* @throws \BitWasp\Buffertools\Exceptions\ParserOutOfRange |
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*/ |
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public function fromParser(Parser $parser) |
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{ |
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/** @var Buffer $bytes */ |
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/** @var int|string $blockSize */ |
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list ($bytes, $blockSize) = [$this->magic->read($parser), $this->size->read($parser)]; |
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if ($bytes->getHex() !== $this->network->getNetMagicBytes()) { |
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throw new \RuntimeException('Block version bytes did not match network'); |
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} |
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return $this->blockSerializer->fromParser(new Parser($parser->readBytes($blockSize))); |
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} |
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/** |
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* @param \BitWasp\Buffertools\BufferInterface|string $data |
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* @return BlockInterface |
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*/ |
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public function parse($data) |
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{ |
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return $this->fromParser(new Parser($data)); |
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} |
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} |
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Bit-Wasp /
bitcoin-php
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In PHP it is possible to write to properties without declaring them. For example, the following is perfectly valid PHP code:
Generally, it is a good practice to explictly declare properties to avoid accidental typos and provide IDE auto-completion: