static void parseAVar(bool diamond){
// it's a valid type
char buf[256];
bool autoRange=false;
float mn=0,mx=0;
int size;
RawDataBuffer *b;
tok.getnextident(buf); // get name
// if diamond, get topic and datum index
char tname[256];
int idx;
#if DIAMOND
if(diamond){
tok.getnextcheck(T_TOPIC);
tok.getnextident(tname);
tok.getnextcheck(T_COMMA);
idx = tok.getnextint();
diamondMap[DiamondTopicKey(tname,idx)]=QString(buf);
diamondapparatus::subscribe(tname);
if(!diamondSet.contains(tname))
diamondSet.insert(tname);
}
#endif
size = tok.getnextint(); // and size
// now get the range
tok.getnextcheck(T_RANGE);
switch(tok.getnext()){
case T_INT:
case T_FLOAT:
mn = tok.getfloat();
tok.getnextcheck(T_TO);
mx = tok.getnextfloat();
break;
case T_AUTO:
autoRange=true;
break;
default:
throw UnexpException(&tok,"number or 'auto'");
break;
}
b=createVar(T_NAMEFLOAT,buf,size,mn,mx);
if(autoRange)
((DataBuffer<float>*)b)->setAutoRange();
}
DataBuffer<float> *ConfigManager::parseFloatSource(){
DataBuffer<float> *b;
char buf[256];
switch(tok.getnext()){
case T_VAR:
tok.getnextident(buf);
b = DataManager::findFloatBuffer(buf);
if(!b)
throw ParseException(&tok).set("undefined variable '%s'",buf);
break;
case T_EXPR:
tok.getnextstring(buf);
// OK, we're going to lose a reference to this, but such is life.
// In this version we never delete expressions anyway.
try {
b = (new Expression(buf))->buffer;
} catch(Exception& e){
throw Exception(e,tok.getline());
}
// now parse the extra bits
tok.getnextcheck(T_RANGE);
float mn,mx;
switch(tok.getnext()){
case T_INT:
case T_FLOAT:
mn = tok.getfloat();
tok.getnextcheck(T_TO);
mx = tok.getnextfloat();
b->setMinMax(mn,mx);
break;
case T_AUTO:
b->setAutoRange();
break;
default:
throw UnexpException(&tok,"expected number or 'auto'");
}
break;
default:
throw UnexpException(&tok,"'var' or 'expr'");
}
return b;
}
static void parseWaypoint(){
tok.getnextcheck(T_OCURLY);
wpResetDefinitions();
for(;;){
char buf[256];
tok.getnextcheck(T_IDENT);
strcpy(buf,tok.getstring());
wpAddField(buf,tok.getnextfloat());
int t = tok.getnext();
if(t==T_CCURLY)
break;
else if(t!=T_COMMA)
throw UnexpException(&tok,"comma or '}'");
}
}
void ConfigManager::parseFile(QString fname){
tok.init();
tok.seterrorhandler(&tokerrorhandler);
tok.settokens(tokens);
tok.setcommentlinesequence("#");
// read the entire file!
QFile file(fname);
if(!file.open(QIODevice::ReadOnly))
throw Exception().set("could not open config file");
QByteArray b = file.readAll();
if(b.isNull() || b.isEmpty())
throw Exception().set("could not read config file");
b.append((char)0);
file.close();
const char *data = b.constData();
tok.reset(data);
bool done = false;
while(!done){
// at the top level we parse frames and
// variables
int t = tok.getnext();
switch(t){
case T_VAR:
parseVars();
break;
case T_WINDOW:
parseWindow();
break;
case T_END:
done=true;
break;
case T_PORT:
port = tok.getnextint();
break;
case T_SENDPORT:
udpSendPort = tok.getnextint();
break;
// the UDP client now sets its address from the first packet received
// but this will override it
case T_SENDADDR:
tok.getnextstring(udpSendAddr);
UDPClient::getInstance()->setAddress(udpSendAddr);
break;
case T_VALIDTIME:
DataManager::dataValidInterval = tok.getnextfloat();
break;
case T_SENDINTERVAL:
sendInterval = tok.getnextfloat();
break;
case T_UPDATEINTERVAL:
graphicalUpdateInterval = tok.getnextfloat()*1000;
break;
case T_AUDIO:
parseAudio();
break;
case T_WAYPOINT:
parseWaypoint();
break;
default:
throw UnexpException(&tok,"'var', 'frame', config data or end of file");
}
}
}
void parseLinkedVars(bool diamond){
char buf[256];
int size,type;
RawDataBuffer *linkvar,*b;
if(tok.getnext()!=T_OPREN)
throw UnexpException(&tok,"( after linked");
linkedVars.clear();
for(;;){
double mn,mx;
char buf[256];
// get type
type = tok.getnext();
// get name
tok.getnextident(buf);
// if diamond, get topic and datum index
char tname[256];
int idx;
#if DIAMOND
if(diamond){
tok.getnextcheck(T_TOPIC);
tok.getnextident(tname);
tok.getnextcheck(T_COMMA);
idx = tok.getnextint();
diamondMap[DiamondTopicKey(tname,idx)]=QString(buf);
if(!diamondSet.contains(tname))
diamondSet.insert(tname);
diamondapparatus::subscribe(tname);
}
#endif
// now the range
tok.getnextcheck(T_RANGE);
mn = tok.getnextfloat();
tok.getnextcheck(T_TO);
mx = tok.getnextfloat();
// add to a list!
linkedVars.append(LinkedVarEntry(buf,type,mn,mx));
if(tok.getnext()!=T_COMMA){
tok.rewind();
break;
}
}
if(tok.getnext()!=T_CPREN)
throw UnexpException(&tok,") after linked var list");
if(tok.getnext()!=T_INT)
throw UnexpException(&tok,"buffer size after linked var list");
size = tok.getint();
linkvar = NULL;
for(int i=0;i<linkedVars.size();i++){
b = createVar(linkedVars[i].type,
linkedVars[i].name,
size,
linkedVars[i].minVal,
linkedVars[i].maxVal);
if(linkvar)
linkvar->link(b);
else
linkvar = b;
}
}