First commit of file entropy analyzer.

- Code comments need cleaned up still.

src/file_analysis/analyzer/entropy/Entropy.cc

@@ -0,0 +1,71 @@
+// See the file "COPYING" in the main distribution directory for copyright.
+
+#include <string>
+
+#include "Entropy.h"
+#include "util.h"
+#include "Event.h"
+#include "file_analysis/Manager.h"
+
+using namespace file_analysis;
+
+Entropy::Entropy(RecordVal* args, File* file)
+    : file_analysis::Analyzer(file_mgr->GetComponentTag("ENTROPY"), args, file)
+	{
+	//entropy->Init();
+	entropy = new EntropyVal;
+	}
+
+Entropy::~Entropy()
+	{
+	Unref(entropy);
+	}
+
+file_analysis::Analyzer* Entropy::Instantiate(RecordVal* args, File* file)
+	{
+	return new Entropy(args, file);
+	}
+
+bool Entropy::DeliverStream(const u_char* data, uint64 len)
+	{
+	if ( ! fed )
+		fed = len > 0;
+
+	entropy->Feed(data, len);
+	return true;
+	}
+
+bool Entropy::EndOfFile()
+	{
+	Finalize();
+	return false;
+	}
+
+bool Entropy::Undelivered(uint64 offset, uint64 len)
+	{
+	return false;
+	}
+
+void Entropy::Finalize()
+	{
+	//if ( ! entropy->IsValid() || ! fed )
+	if ( ! fed )
+		return;
+
+	val_list* vl = new val_list();
+	vl->append(GetFile()->GetVal()->Ref());
+
+	double montepi, scc, ent, mean, chisq;
+	montepi = scc = ent = mean = chisq = 0.0;
+	entropy->Get(&ent, &chisq, &mean, &montepi, &scc);
+
+	RecordVal* ent_result = new RecordVal(entropy_test_result);
+	ent_result->Assign(0, new Val(ent,     TYPE_DOUBLE));
+	ent_result->Assign(1, new Val(chisq,   TYPE_DOUBLE));
+	ent_result->Assign(2, new Val(mean,    TYPE_DOUBLE));
+	ent_result->Assign(3, new Val(montepi, TYPE_DOUBLE));
+	ent_result->Assign(4, new Val(scc,     TYPE_DOUBLE));
+
+	vl->append(ent_result);
+	mgr.QueueEvent(file_entropy, vl);
+	}