private async Task FindingAndReplacingScriptInsideMapContentInBytes()
{
await Task.Run(() =>
{
var scriptTagInBytes = Encoding.UTF8.GetBytes("c_scrpt");
var numberOfCharactersInScriptTag = scriptTagInBytes.Length;
var nextTagInBytes = Encoding.UTF8.GetBytes("c_lr");
var indexArrayOfFirstTagInBytes = _map.ContentInBytes.Locate(scriptTagInBytes);
var indexesArrayNextTagInBytes = _map.ContentInBytes.Locate(nextTagInBytes);
if (indexArrayOfFirstTagInBytes.Length == 0 || indexesArrayNextTagInBytes.Length == 0)
{
return;
}
var indexOfFirstTagInBytes = indexArrayOfFirstTagInBytes[0];
var indexOfNextTagInBytes = indexesArrayNextTagInBytes[0];
var endOfTransmissionCharacterCount = 1;
var indexOfFirstSizeByte = indexOfFirstTagInBytes + numberOfCharactersInScriptTag;
var indexOfByteBeforeFirstSizeByte = indexOfFirstSizeByte - 1;
var indexOfLastByteOfScript = indexOfNextTagInBytes - endOfTransmissionCharacterCount - 1;
var indexOfByteAfterLastByteOfScript = indexOfLastByteOfScript + 1;
var newScriptTextBytes = Encoding.UTF8.GetBytes(_script.ScriptText);
var newScriptTextInBase64 = Convert.ToBase64String(newScriptTextBytes);
var newScriptInBase64SizePrefixedInBytes = newScriptTextInBase64.ToSizePrefixedByteArray();
var byteArrayUntilByteBeforeFirstSizeByte = new byte[indexOfByteBeforeFirstSizeByte + 1];
var bytesCountFromByteAfterLastByteOfScriptUntilTheEnd = _map.ContentInBytes.Length - indexOfByteAfterLastByteOfScript;
var byteArrayFromByteAfterLastByteOfScriptUntilTheEnd = new byte[bytesCountFromByteAfterLastByteOfScriptUntilTheEnd + 1];
Array.Copy(_map.ContentInBytes, sourceIndex: 0, destinationArray: byteArrayUntilByteBeforeFirstSizeByte, destinationIndex: 0, length: indexOfByteBeforeFirstSizeByte + 1);
Array.Copy(_map.ContentInBytes, sourceIndex: indexOfByteAfterLastByteOfScript, destinationArray: byteArrayFromByteAfterLastByteOfScriptUntilTheEnd, destinationIndex: 0, length: bytesCountFromByteAfterLastByteOfScriptUntilTheEnd);
_map.ContentInBytes = ByteExtensions.CombineByteArrays(byteArrayUntilByteBeforeFirstSizeByte, newScriptInBase64SizePrefixedInBytes, byteArrayFromByteAfterLastByteOfScriptUntilTheEnd);
});
}
