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<?php |
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namespace BitWasp\Bitcoin\Serializer\Block; |
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use BitWasp\Buffertools\Exceptions\ParserOutOfRange; |
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use BitWasp\Buffertools\Parser; |
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use BitWasp\Bitcoin\Block\BlockHeader; |
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use BitWasp\Bitcoin\Block\BlockHeaderInterface; |
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use BitWasp\Buffertools\TemplateFactory; |
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class BlockHeaderSerializer |
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{ |
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/** |
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* @var \BitWasp\Buffertools\Template |
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*/ |
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private $template; |
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public function __construct() |
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{ |
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$this->template = $this->getTemplate(); |
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} |
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/** |
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* @param \BitWasp\Buffertools\BufferInterface|string $string |
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* @return BlockHeader |
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* @throws ParserOutOfRange |
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*/ |
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public function parse($string) |
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{ |
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return $this->fromParser(new Parser($string)); |
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} |
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/** |
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* @return \BitWasp\Buffertools\Template |
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*/ |
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public function getTemplate() |
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{ |
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return (new TemplateFactory()) |
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->int32le() |
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->bytestringle(32) |
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->bytestringle(32) |
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->uint32le() |
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->uint32le() |
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->uint32le() |
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->getTemplate(); |
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} |
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/** |
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* @param Parser $parser |
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* @return BlockHeader |
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* @throws ParserOutOfRange |
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*/ |
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public function fromParser(Parser $parser) |
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{ |
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try { |
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list ($version, $prevHash, $merkleHash, $time, $nBits, $nonce) = $this->template->parse($parser); |
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return new BlockHeader( |
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$version, |
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$prevHash, |
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$merkleHash, |
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$time, |
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(int) $nBits, |
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$nonce |
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); |
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} catch (ParserOutOfRange $e) { |
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throw new ParserOutOfRange('Failed to extract full block header from parser'); |
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} |
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} |
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/** |
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* @param BlockHeaderInterface $header |
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* @return \BitWasp\Buffertools\BufferInterface |
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*/ |
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public function serialize(BlockHeaderInterface $header) |
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{ |
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return $this->template->write([ |
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$header->getVersion(), |
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$header->getPrevBlock(), |
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$header->getMerkleRoot(), |
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$header->getTimestamp(), |
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$header->getBits(), |
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$header->getNonce() |
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]); |
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} |
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} |
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Bit-Wasp /
bitcoin-php
