From 33c173febd67cf6b558eb86ba552dc9369ab4b24 Mon Sep 17 00:00:00 2001
From: chatty
Date: Mon, 14 Mar 1994 08:40:16 +0000
Subject: Initial revision

---
 dnn/Event.cc | 163 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 163 insertions(+)
 create mode 100644 dnn/Event.cc

(limited to 'dnn/Event.cc')

diff --git a/dnn/Event.cc b/dnn/Event.cc
new file mode 100644
index 0000000..3dbf5fb
--- /dev/null
+++ b/dnn/Event.cc
@@ -0,0 +1,163 @@
+/*
+ *	DNN - Data News Network
+ *
+ *	by Stephane Chatty
+ *
+ *	Copyright 1993-1994
+ *	Centre d'Etudes de la Navigation Aerienne (CENA)
+ *
+ *	Events.
+ *
+ *	$Id$
+ *	$CurLog$
+ */
+
+#include "Event.h"
+#include <memory.h>
+
+DnnEventFeatureList :: DnnEventFeatureList (const DnnEventFeatureList& base, int nbf, DnnEventFeature* f)
+: CcuListOf <DnnEventFeature> (base)
+{
+	Load (nbf, f);
+}
+
+DnnEventFeatureList :: DnnEventFeatureList (int nbf, DnnEventFeature* f)
+: CcuListOf <DnnEventFeature> ()
+{
+	Load (nbf, f);
+}
+
+void
+DnnEventFeatureList :: Load (int nbf, DnnEventFeature* f)
+{
+	while (nbf-- > 0)
+		Append (f++);
+}
+
+DnnEventFeatureList :: ~DnnEventFeatureList ()
+{
+}
+
+
+/*?class DnnEventType
+A \typ{DnnEventType} contains the description of a -- dynamic -- class of events.
+It holds a name and an array of offsets, each describing where to find the corresponding
+feature in an event of that class.
+?*/
+
+CcuListOf <DnnEventType>* DnnEventType::AllTypes = 0;
+
+/*?hidden?*/
+void
+DnnEventType :: ClassInit ()
+{
+	AllTypes = new CcuListOf <DnnEventType>;
+}
+
+/*?
+Build an event type named \var{name} from an array of features. This is mostly
+useful for statically defined event classes. \var{f} is the array of features, and
+\var{nbf} is the number of features in that array.
+?*/
+DnnEventType :: DnnEventType (const char* name, int nbf, DnnEventFeature f [])
+: Name (name),
+#if 0
+  Features (),
+#endif
+  NbFeatures (nbf),
+  FeaturesOffsets (new int [nbf])
+{
+	if (!AllTypes)
+		ClassInit ();
+	AllTypes->Append (this);
+	int offset = 0;
+	for (int i = 0; i < nbf; ++i) {
+		offset += f[i].Size;
+		FeaturesOffsets [i] = offset;
+	}
+}
+
+/*?
+Build an event type from a list of features.
+?*/
+DnnEventType :: DnnEventType (const char* name, const DnnEventFeatureList& fl)
+: Name (name),
+#if 0
+  Features (),
+#endif
+  NbFeatures (fl.Length ()),
+  FeaturesOffsets (new int [NbFeatures])
+{
+	if (!AllTypes)
+		ClassInit ();
+	AllTypes->Append (this);
+	int offset = 0;
+	int i = 0;
+	CcuListIterOf <DnnEventFeature> f = fl;
+	while (++f) {
+		offset += (*f)->Size;
+		FeaturesOffsets [i] = offset;
+		++i;
+	}
+}
+
+/*?nodoc?*/
+DnnEventType :: ~DnnEventType ()
+{
+	AllTypes->Remove (this);
+	delete [] FeaturesOffsets;
+}
+
+/*?
+Build an even of type \var{t}.
+?*/
+DnnEvent :: DnnEvent (const DnnEventType* t)
+: Type (*t)
+{
+	int sz = t->GetTotalSize ();
+	if (sz > 0)
+		Data = new char [sz];
+	else
+		Data = 0;
+}
+
+/*?nodoc?*/
+DnnEvent :: ~DnnEvent ()
+{
+	if (Data)
+		delete [] Data;
+}
+
+void
+DnnEvent :: SetFeature (int i, const void* data)
+{
+	int offset = Type.GetOffset (i);
+	int size = Type.GetSize (i);
+	memcpy (Data+offset, data, size);
+}
+
+void
+DnnEvent :: GetFeature (int i, void* data)
+{
+	int offset = Type.GetOffset (i);
+	int size = Type.GetSize (i);
+	memcpy (data, Data+offset, size);
+}
+
+#if 0
+void
+DnnEvent :: WriteTo (DnnIOS& s)
+{
+	// what about byte swapping?
+	s.WriteBuf ((const byte*) Data, Type.GetTotalSize ());
+}
+
+void
+DnnEvent :: ReadFrom (DnnIOS& s, lword)
+{
+	// what about byte swapping?
+	s.ReadBuf ((byte*) Data, Type.GetTotalSize ());
+}
+
+
+#endif
-- 
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