void ReadDataFile(){
cout << "Opening data file 'data_" << FileNumber << ".txt'..." << endl;
string file = "data_" + FileNumber + ".txt";
DataFile.open(file.c_str());
if (!DataFile){
TerminateError("Unable to open data file.");
}
ListNode<ListNodeData> *node = NULL;
//Find the last node to append the list, if the list is already with items.
TheList.Rewind();
while (TheList.Current() != NULL){
node = TheList.Current();
TheList.Next();
}
string text, dummy;
int number;
//Read data file into list
while (!DataFile.eof()){
GetLine(DataFile, text); //GetLine gets rid of newline character.
if (DataFile.eof()){ //EOF was reached before a number is read!? Means file is malformed. Ignoring final node.
cout << "Unexpected end of file for data file. Finishing read." << endl;
break;
}
DataFile >> number;
getline(DataFile, dummy); //Use GetLine to clear the newline character.
//The default behaviour of inserting new nodes to the list is by inserting it at the first node.
//So we need a "workaround" to build the list as it was defined in the data file.
cout << "Appending Node " << text << " " << number << endl;
if (node == NULL){
node = TheList.InsertNewNode(ListNodeData(number, text)); //This is the first node.
}
else{
node = TheList.AppendNode(node, ListNodeData(number, text)); //Append additional node behind the first node
}
}
DataFile.close();
}
