public void Setup()
{
_settings = new PlagiarismSettings()
{
Threshold = 0.6,
Configurations = new List <ComparisonConfig>
{
new() { SamplingWindow = 6, KGramLength = 3 },
new() { SamplingWindow = 8, KGramLength = 5 }
}
};
_hashService = new HashService();
_plagiarismService = new PlagiarismService(_settings, _hashService);
_functionsToCompare = new List <FunctionAggregate>(new[]
{
GetFunctionAggregate(
"var serviceProvider = new ServiceCollection().AddLogging().BuildServiceProvider();var factory = serviceProvider.GetService<ILoggerFactory>();"
)
});
_suspectedFunction = GetFunctionAggregate(
"var serviceProvider = new ServiceCollection().AddLogging().BuildServiceProvider();");
}
public Task Handle(PlagiarismAnalyzeNotification notification, CancellationToken cancellationToken)
{
using var scope = _serviceProvider.CreateScope();
var codePlagiarismService = scope.ServiceProvider
.GetRequiredService <ICodePlagiarismService>();
var donePlagiarismService = scope.ServiceProvider
.GetRequiredService <IDispatcher <PlagiarismAnalyzeResponse> >();
var suspectedFunction = new FunctionAggregate(new FunctionId(notification.SuspectedFunction.Id),
notification.SuspectedFunction.Code, _hashService.GetHash(notification.SuspectedFunction.Code));
var comparedFunctions = notification.ComparedFunctions
.Select(f => new FunctionAggregate(new FunctionId(f.Id), f.Code, _hashService.GetHash(f.Code)))
.ToList();
var functionWithSimilarities =
codePlagiarismService.AnalyseCode(suspectedFunction, comparedFunctions);
var similarFunctions = functionWithSimilarities.SimilarFunctions
.Select(f => new FunctionSimilarity(f.Id.Value, f.SimilarityRate, f.Hash))
.ToList();
var res = new PlagiarismAnalyzeResponse(functionWithSimilarities.Id.Value, functionWithSimilarities.Hash,
similarFunctions);
return(donePlagiarismService.Dispatch(res));
}
public FunctionAggregate AnalyseCode(FunctionAggregate suspectedFunctionAggregate,
IList <FunctionAggregate> functionsToCompare)
{
foreach (var functionToCompare in functionsToCompare)
{
if (functionToCompare.Id.Equals(suspectedFunctionAggregate.Id))
{
continue;
}
var averageSimilarity =
GetAverageSimilarityRate(suspectedFunctionAggregate.Code, functionToCompare.Code);
if (averageSimilarity > _settings.Threshold)
{
suspectedFunctionAggregate.AddSimilarFunction(
functionToCompare.Id,
functionToCompare.Hash,
averageSimilarity);
}
}
return(suspectedFunctionAggregate);
}
