simple-ontology/save_load.pde

/**
 * Saving and loading is a messy hack!
 * You'll get a blank line in your save file for each deleted object.
 * That's because of my lack of skills of dodging the garbage collector.
 * I didn't loose data to corruption yet.
 * Don't touch the save files if you don't want to mess them up!
 **/

boolean exporting; 
String savePNGpath = dataPath("save.png");

void savePNGFile(File selection) {
  savePNGpath = selection.getPath();
  exporting = true;
}

void saveCSVFile(File selection) {
  saveCSV(selection.getPath());
}

void loadCSVFile(File selection) {
  loadCSV(selection.getPath());
}

void loadCSV(String path) {
  for (int i = 0; i < nodeCount; i++) {
    //nodes[i].deleted = true;
    i_selectedNode = i;
    deleteSelectedNode();
  }
  nodeCount = 0;

  for (int i = 0; i < linkCount; i++) {
    links[i].active = false;
  }
  linkCount = 0;

  String[] loadString = loadStrings(path);
  for (int i = 0; i < loadString.length-1; i++) {
    //This is ultra shitty
    if (loadString[i].length() == 0) {
      addNode(-1000, -1000, " ");
      i_selectedNode = nodeCount - 1;
      deleteSelectedNode();
      //nodes[nodeCount-1].deleted = true;
    } else {
      String nodeData[] = split(loadString[i], ',');
      addNode(int(nodeData[1]), int(nodeData[2]), nodeData[0]);
    }
  }
  for (int i = 0; i < loadString.length-1; i++) {
    String nodeData[] = split(loadString[i], ',');
    for (int j = 3; j < nodeData.length; j++) {
      Link(i, int(nodeData[j]));
    }
  }
}

void saveCSV(String path) {
  String saveString = "";
  for (int i = 0; i < nodeCount; i++) {
    if (!nodes[i].deleted) {
      saveString += nodes[i].title + "," + nodes[i].x + "," + nodes[i].y;
      for (int j = 0; j < linkCount; j++) {
        if (links[j].parentNode == i && links[j].active) {
          saveString += "," + str(links[j].targetNode);
        }
      }
    }
    saveString += "\n";
  }
  String[] saveArray = split(saveString, '\n');
  saveStrings(path, saveArray);
}