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<?php |
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declare(strict_types=1); |
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namespace BitWasp\Bitcoin\Script; |
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use BitWasp\Bitcoin\Bitcoin; |
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use BitWasp\Bitcoin\Crypto\EcAdapter\Adapter\EcAdapterInterface; |
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use BitWasp\Bitcoin\Math\Math; |
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use BitWasp\Bitcoin\Script\Consensus\BitcoinConsensus; |
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use BitWasp\Bitcoin\Script\Consensus\ConsensusInterface; |
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use BitWasp\Bitcoin\Script\Consensus\NativeConsensus; |
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use BitWasp\Bitcoin\Script\Factory\OutputScriptFactory; |
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use BitWasp\Bitcoin\Script\Factory\ScriptCreator; |
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use BitWasp\Bitcoin\Script\Parser\Operation; |
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use BitWasp\Buffertools\Buffer; |
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use BitWasp\Buffertools\BufferInterface; |
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class ScriptFactory |
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{ |
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/** |
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* @var OutputScriptFactory |
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*/ |
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private static $outputScriptFactory = null; |
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/** |
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* @var Opcodes|null |
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*/ |
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protected static $opcodes = null; |
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public static function getOpCodes(): Opcodes |
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{ |
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if (null === static::$opcodes) { |
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static::$opcodes = new Opcodes(); |
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} |
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return static::$opcodes; |
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} |
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/** |
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* @param string $string |
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* @return ScriptInterface |
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* @throws \Exception |
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*/ |
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public static function fromHex(string $string): ScriptInterface |
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{ |
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return self::fromBuffer(Buffer::hex($string)); |
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} |
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/** |
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* @param BufferInterface $buffer |
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* @param Opcodes|null $opcodes |
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* @param Math|null $math |
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* @return ScriptInterface |
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*/ |
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public static function fromBuffer(BufferInterface $buffer, Opcodes $opcodes = null, Math $math = null): ScriptInterface |
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{ |
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return self::create($buffer, $opcodes, $math)->getScript(); |
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} |
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/** |
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* @param BufferInterface|null $buffer |
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* @param Opcodes|null $opcodes |
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* @param Math|null $math |
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* @return ScriptCreator |
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*/ |
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public static function create(BufferInterface $buffer = null, Opcodes $opcodes = null, Math $math = null): ScriptCreator |
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{ |
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$opcodes = $opcodes ?: self::getOpCodes(); |
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return new ScriptCreator($math ?: Bitcoin::getMath(), $opcodes, $buffer); |
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} |
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/** |
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* Create a script consisting only of push-data operations. |
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* Suitable for a scriptSig. |
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* |
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* @param BufferInterface[] $buffers |
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* @return ScriptInterface |
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*/ |
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public static function pushAll(array $buffers): ScriptInterface |
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{ |
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return self::sequence(array_map(function ($buffer) { |
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if (!($buffer instanceof BufferInterface)) { |
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throw new \RuntimeException('Script contained a non-push opcode'); |
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} |
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$size = $buffer->getSize(); |
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if ($size === 0) { |
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return Opcodes::OP_0; |
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} |
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$first = ord($buffer->getBinary()[0]); |
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if ($size === 1 && $first >= 1 && $first <= 16) { |
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return \BitWasp\Bitcoin\Script\encodeOpN($first); |
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} else { |
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return $buffer; |
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} |
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}, $buffers)); |
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} |
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/** |
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* @param int[]|\BitWasp\Bitcoin\Script\Interpreter\Number[]|BufferInterface[] $sequence |
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* @return ScriptInterface |
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*/ |
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public static function sequence(array $sequence): ScriptInterface |
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{ |
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return self::create()->sequence($sequence)->getScript(); |
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} |
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/** |
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* @param Operation[] $operations |
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* @return ScriptInterface |
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*/ |
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public static function fromOperations(array $operations): ScriptInterface |
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{ |
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$sequence = []; |
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foreach ($operations as $operation) { |
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if (!($operation instanceof Operation)) { |
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throw new \RuntimeException("Invalid input to fromOperations"); |
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} |
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$sequence[] = $operation->encode(); |
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} |
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return self::sequence($sequence); |
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} |
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/** |
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* @return OutputScriptFactory |
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*/ |
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public static function scriptPubKey(): OutputScriptFactory |
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{ |
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if (self::$outputScriptFactory === null) { |
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self::$outputScriptFactory = new OutputScriptFactory(); |
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} |
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return self::$outputScriptFactory; |
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} |
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/** |
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* @param EcAdapterInterface|null $ecAdapter |
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* @return NativeConsensus |
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*/ |
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public static function getNativeConsensus(EcAdapterInterface $ecAdapter = null): NativeConsensus |
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{ |
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return new NativeConsensus($ecAdapter ?: Bitcoin::getEcAdapter()); |
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} |
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/** |
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* @return BitcoinConsensus |
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*/ |
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public static function getBitcoinConsensus(): BitcoinConsensus |
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{ |
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return new BitcoinConsensus(); |
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} |
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/** |
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* @param EcAdapterInterface|null $ecAdapter |
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* @return ConsensusInterface |
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*/ |
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public static function consensus(EcAdapterInterface $ecAdapter = null): ConsensusInterface |
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{ |
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if (extension_loaded('bitcoinconsensus')) { |
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return self::getBitcoinConsensus(); |
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} else { |
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return self::getNativeConsensus($ecAdapter); |
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} |
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} |
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} |
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Bit-Wasp /
bitcoin-php
