void DBObjTableField::Swap() {
DBByteOrderSwapHalfWord(&StartByteVAR);
DBByteOrderSwapHalfWord(&LengthVAR);
switch (TypeVAR) {
case DBTableFieldInt:
switch (LengthVAR) {
case 2:
ShortPROP.Swap();
break;
case 4:
IntPROP.Swap();
break;
}
break;
case DBTableFieldFloat:
switch (LengthVAR) {
case 4:
Float4PROP.Swap();
break;
case 8:
FloatPROP.Swap();
break;
}
break;
case DBTableFieldDate:
DatePROP.Swap();
break;
case DBTableFieldTableRec:
case DBTableFieldDataRec:
DBByteOrderSwapWord(&RecordPROP);
break;
}
}
void DBDataHeader::Swap() {
DBByteOrderSwapHalfWord(&ByteOrderVAR);
DBByteOrderSwapHalfWord(&TypeVAR);
DBByteOrderSwapHalfWord(&MajorVAR);
DBByteOrderSwapHalfWord(&MinorVAR);
DBByteOrderSwapHalfWord(&ProjectionVAR);
DBByteOrderSwapHalfWord(&PrecisionVAR);
DBByteOrderSwapHalfWord(&SpatialUnitVAR);
DBByteOrderSwapHalfWord(&ValueUnitVAR);
DBByteOrderSwapHalfWord(&MaxScaleVAR);
DBByteOrderSwapHalfWord(&MinScaleVAR);
DBByteOrderSwapWord(&DummyVAR);
ExtentVAR.Swap();
LastModVAR.Swap();
}
int DBObjTable::Read(FILE *file, int swap) {
DBInt id;
DBDate date;
DBCoordinate coord;
DBRegion region;
DBPosition pos;
DBUShort row, col;
DBObjRecord *record;
DBObjTableField *field;
if (DBObjectLIST<DBObjRecord>::Read(file, swap) != DBSuccess) return (DBFault);
if (FieldPTR->Read(file, swap) != DBSuccess) return (DBFault);
for (id = 0; id < FieldPTR->ItemNum(); ++id)
if (FieldPTR->ReadItem(file, id, swap) == DBFault) return (DBFault);
RecordLengthVAR = 0;
for (field = FieldPTR->First(); field != (DBObjTableField *) NULL; field = FieldPTR->Next())
RecordLengthVAR = RecordLengthVAR > field->StartByte() + field->Length() ?
RecordLengthVAR : field->StartByte() + field->Length();
for (id = 0; id < ItemNum(); ++id) {
if (ReadItem(file, id, swap) == DBFault) return (DBFault);
record = Item(id);
if (swap == false) continue;
for (field = FieldPTR->First(); field != (DBObjTableField *) NULL; field = FieldPTR->Next())
switch (field->Type()) {
case DBTableFieldInt:
case DBTableFieldFloat:
case DBTableFieldTableRec:
case DBTableFieldDataRec:
switch (field->Length()) {
case 2:
DBByteOrderSwapHalfWord((char *) record->Data() + field->StartByte());
break;
case 4:
DBByteOrderSwapWord((char *) record->Data() + field->StartByte());
break;
case 8:
DBByteOrderSwapLongWord((char *) record->Data() + field->StartByte());
break;
}
break;
case DBTableFieldDate:
date = field->Date(record);
date.Swap();
field->Date(record, date);
break;
case DBTableFieldCoord:
coord = field->Coordinate(record);
coord.Swap();
field->Coordinate(record, coord);
break;
case DBTableFieldRegion:
region = field->Region(record);
region.Swap();
field->Region(record, region);
break;
case DBTableFieldPosition:
pos = field->Position(record);
switch (field->Length()) {
case sizeof(DBPosition):
pos.Swap();
break;
default:
row = pos.Row;
col = pos.Col;
DBByteOrderSwapHalfWord(&row);
DBByteOrderSwapHalfWord(&col);
pos.Row = row;
pos.Col = col;
break;
}
field->Position(record, pos);
break;
default:
break;
}
}
if (MethodPTR->Read(file, swap) != DBSuccess) return (DBFault);
for (id = 0; id < MethodPTR->ItemNum(); ++id) if (MethodPTR->ReadItem(file, id, swap) == DBFault) return (DBFault);
return (DBSuccess);
}
