function ProcessScriptTests($inputSource)
{
echo "CoinSpark Script Tests Output\n\n";
while (true) {
$inputLines = GetNextInputLines($inputSource, 4);
if (!isset($inputLines)) {
break;
}
list($countInputs, $countOutputs, $scriptPubKeyHex) = $inputLines;
$metadata = CoinSparkScriptToMetadata($scriptPubKeyHex, true);
if (!isset($metadata)) {
die("Could not decode script metadata: {$scriptPubKeyHex}\n");
}
// Read in the different types of metadata
$genesis = new CoinSparkGenesis();
$hasGenesis = $genesis->decode($metadata);
$paymentRef = new CoinSparkPaymentRef();
$hasPaymentRef = $paymentRef->decode($metadata);
$transfers = new CoinSparkTransferList();
$hasTransfers = $transfers->decode($metadata, $countInputs, $countOutputs);
$message = new CoinSparkMessage();
$hasMessage = $message->decode($metadata, $countOutputs);
// Output the toString()s
if ($hasGenesis) {
echo $genesis->toString();
}
if ($hasPaymentRef) {
echo $paymentRef->toString();
}
if ($hasTransfers) {
echo $transfers->toString();
}
if ($hasMessage) {
echo $message->toString();
}
// Re-encode
$testMetadata = '';
$testMetadataMaxLen = strlen($metadata);
$nextMetadataMaxLen = $testMetadataMaxLen;
$encodeOrder = array('genesis', 'paymentRef', 'transfers', 'message');
foreach ($encodeOrder as $encodeField) {
$triedNextMetadata = false;
switch ($encodeField) {
case 'genesis':
if ($hasGenesis) {
$nextMetadata = $genesis->encode($nextMetadataMaxLen);
$triedNextMetadata = true;
}
break;
case 'paymentRef':
if ($hasPaymentRef) {
$nextMetadata = $paymentRef->encode($nextMetadataMaxLen);
$triedNextMetadata = true;
}
break;
case 'transfers':
if ($hasTransfers) {
$nextMetadata = $transfers->encode($countInputs, $countOutputs, $nextMetadataMaxLen);
$triedNextMetadata = true;
}
break;
case 'message':
if ($hasMessage) {
$nextMetadata = $message->encode($countOutputs, $nextMetadataMaxLen);
$triedNextMetadata = true;
}
break;
}
if ($triedNextMetadata) {
if (!isset($nextMetadata)) {
die("Failed to reencode {$encodeField} metadata!\n");
}
if (strlen($testMetadata)) {
$testMetadata = CoinSparkMetadataAppend($testMetadata, $testMetadataMaxLen, $nextMetadata);
if (!isset($testMetadata)) {
die("Insufficient space to append {$encodeField} metadata!\n");
}
} else {
$testMetadata = $nextMetadata;
}
$nextMetadataMaxLen = CoinSparkMetadataMaxAppendLen($testMetadata, $testMetadataMaxLen);
}
}
// Test other library functions while we are here
if ($hasGenesis) {
if (!$genesis->match($genesis, true)) {
die("Failed to match genesis to itself!\n");
}
if ($genesis->calcHashLen(strlen($metadata)) != $genesis->assetHashLen) {
// assumes that metadata only contains genesis
die("Failed to calculate matching asset hash length!\n");
}
$testGenesis = new CoinSparkGenesis();
$testGenesis->decode($metadata);
$rounding = rand(0, 2) - 1;
$testGenesis->setQty(0, 0);
$testGenesis->setQty($genesis->getQty(), $rounding);
$testGenesis->setChargeFlat(0, 0);
$testGenesis->setChargeFlat($genesis->getChargeFlat(), $rounding);
if (!$genesis->match($testGenesis, false)) {
die("Mismatch on genesis rounding!\n");
}
}
if ($hasPaymentRef) {
if (!$paymentRef->match($paymentRef)) {
die("Failed to match paymentRef to itself!\n");
}
}
if ($hasTransfers) {
if (!$transfers->match($transfers, true)) {
die("Failed to strictly match transfers to itself!\n");
}
if (!$transfers->match($transfers, false)) {
die("Failed to leniently match transfers to itself!\n");
}
}
if ($hasMessage) {
if (!$message->match($message, true)) {
die("Failed to strictly match message to itself!\n");
}
if (!$message->match($message, false)) {
die("Failed to leniently match message to itself!\n");
}
$messageEncode = $message->encode($countOutputs, strlen($metadata));
// encode on its own to check calcHashLen()
if ($message->calcHashLen($countOutputs, strlen($messageEncode)) != $message->hashLen) {
die("Failed to calculate matching message hash length!\n");
}
}
// Compare to the original
$encoded = CoinSparkMetadataToScript($testMetadata, true);
if ($encoded != $scriptPubKeyHex) {
die("Encode metadata mismatch: {$encoded} should be {$scriptPubKeyHex}\n");
}
$checkMetadata = CoinSparkScriptToMetadata(CoinSparkMetadataToScript($testMetadata, false), false);
if ($checkMetadata != $testMetadata) {
die("Binary metadata to/from script mismatch!\n");
}
}
}
/**
* Extracts first OP_RETURN metadata (not necessarily CoinSpark data) from an array of bitcoin tx output scripts.
*
* @param array $scriptPubKeys Array of output scripts as raw binary data or hexadecimal.
* @param boolean $scriptsAreHex True to interpret each element of $scriptPubKeys as a hex string, false as raw binary.
*
* @return string|null First raw binary embedded metadata if found, null if none found.
*/
function CoinSparkScriptsToMetadata($scriptPubKeys, $scriptsAreHex)
{
foreach ($scriptPubKeys as $scriptPubKey) {
if (!CoinSparkScriptIsRegular($scriptPubKey, $scriptsAreHex)) {
return CoinSparkScriptToMetadata($scriptPubKey, $scriptsAreHex);
}
}
return null;
}
