/**
* Push data into the stack.
*
* @param $data
* @return $this
* @throws \Exception
*/
public function push(Buffer $data)
{
$length = $data->getSize();
$parsed = new Parser('', $this->math);
/** Note that larger integers are serialized without flipping bits - Big endian */
if ($length < $this->opcodes->getOpByName('OP_PUSHDATA1')) {
$varInt = Buffertools::numToVarInt($length);
$data = new Buffer($varInt->getBinary() . $data->getBinary(), null, $this->math);
$parsed->writeBytes($data->getSize(), $data);
} else {
if ($length <= 0xff) {
$lengthSize = 1;
} elseif ($length <= 0xffff) {
$lengthSize = 2;
} else {
$lengthSize = 4;
}
$op = $this->opcodes->getOpByName('OP_PUSHDATA' . $lengthSize);
$parsed->writeBytes(1, Buffer::int($op))->writeBytes($lengthSize, Buffer::int($length), true)->writeBytes($length, $data);
}
$this->script .= $parsed->getBuffer()->getBinary();
return $this;
}
/**
* @param string $message
* @return \BitWasp\Buffertools\Buffer
*/
public function calculateMessageHash($message)
{
$content = new Buffer("Bitcoin Signed Message:\n" . Buffertools::numToVarInt(strlen($message))->getBinary() . $message);
$hash = Hash::sha256d($content);
return $hash;
}
/**
* @expectedException \Exception
*/
public function testNumToVarIntOutOfRange()
{
// Check that this is out of range (PHP's fault)
$decimal = EccFactory::getAdapter()->pow(2, 32) + 1;
Buffertools::numToVarInt($decimal);
}
/**
* Take an array containing serializable objects.
* @param SerializableInterface []|Buffer[]
* @return $this
*/
public function writeArray($serializable)
{
$parser = new Parser(Buffertools::numToVarInt(count($serializable)), $this->math);
foreach ($serializable as $object) {
if ($object instanceof SerializableInterface) {
$object = $object->getBuffer();
}
if ($object instanceof Buffer) {
$parser->writeBytes($object->getSize(), $object);
} else {
throw new \RuntimeException('Input to writeArray must be Buffer[], or SerializableInterface[]');
}
}
$this->string .= $parser->getBuffer()->getBinary();
return $this;
}
/**
* @param string $message
* @return BufferInterface
* @throws \Exception
*/
private function calculateBody($message)
{
return new Buffer("Bitcoin Signed Message:\n" . Buffertools::numToVarInt(strlen($message))->getBinary() . $message, null, $this->ecAdapter->getMath());
}
