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<?php
declare(strict_types=1);
namespace BitWasp\Trezor\Bridge\Util;
use GuzzleHttp\Psr7\Stream;
use Psr\Http\Message\StreamInterface;
class StreamUtil
{
/**
* @param string $stringToConvert
* @return resource
*/
public function createStream(string $stringToConvert)
$stream = fopen('php://memory', 'w+');
if (!is_resource($stream)) {
throw new \RuntimeException("Failed to create stream");
}
$wrote = fwrite($stream, $stringToConvert);
if ($wrote !== strlen($stringToConvert)) {
throw new \RuntimeException("Failed to write to stream");
rewind($stream);
return $stream;
* @param StreamInterface $hexStream
* @return StreamInterface
public function hex2bin(StreamInterface $hexStream): StreamInterface
$hex = $hexStream->getContents();
if (!ctype_xdigit($hex)) {
throw new \RuntimeException("Invalid hex as input");
return new Stream($this->createStream(pack("H*", $hex)));
Bit-Wasp /
trezor-bridge-client
