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/*
* DNN - Data News Network
*
* by Stephane Chatty
*
* Copyright 1993-1995
* 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 event 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;
}
DnnEvent :: DnnEvent (const DnnEventType* t, bool alloc)
: Type (*t)
{
if (alloc) {
int sz = t->GetTotalSize ();
if (sz > 0)
Data = new char [sz];
else
Data = 0;
} else {
Data = (char*) (&Data + sizeof (char*));
}
}
/*?nodoc?*/
DnnEvent :: ~DnnEvent ()
{
if (Data && Data != (char*) (&Data+sizeof (char*)))
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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