/**
  * Returns the named argument with the specified character short form name
  *
  * @param argShortFormName the specified character short form name
  * @return the named argument with the specified char short form name
  */
 public NamedArgument getNamedArgument(char argShortFormName) {
   NamedArgument returnArg = null;
   for (int i = 0; i < namedArgumentList.size(); i++) {
     NamedArgument currentArg = namedArgumentList.get(i);
     if (currentArg.getShortFormName() == argShortFormName) {
       returnArg = currentArg;
     }
   }
   return returnArg;
 }
  private void setShortFormNamedArgValues(String[] args) throws NumberFormatException {
    for (int i = 0; i < args.length; i++) {
      String[] tempNamedArg = new String[2];
      if (args[i].startsWith("-")) {
        tempNamedArg = args[i].split("-");
        for (int k = 0; k < namedArgumentList.size(); k++) {
          incorrectDataTypeIndex = k;
          incorrectArgumentType = "named";
          NamedArgument currentNamedArg = namedArgumentList.get(k);
          if (tempNamedArg[1].length() == 1) { // single char
            if (Character.toString(currentNamedArg.getShortFormName()).equals(tempNamedArg[1])) {
              if (!currentNamedArg.getType().equals("boolean")) {
                incorrectArgValueForSpecifiedDataType = args[i + 1];
                if (currentNamedArg.getType().equals("integer")) {
                  int argValue = Integer.parseInt(args[i + 1]);
                  currentNamedArg.setValue(args[i + 1]);
                } else if (currentNamedArg.getType().equals("float")) {
                  float argValue = Float.parseFloat(args[i + 1]);
                  currentNamedArg.setValue(args[i + 1]);
                } else if (currentNamedArg.getType().equals("string")) {
                  currentNamedArg.setValue(args[i + 1]);
                }

              } else {
                currentNamedArg.setValue("true");
              }
            }
          } else { // multiple flags in one specification
            for (int j = 0; j < tempNamedArg[1].length(); j++) {
              if (currentNamedArg.getShortFormName() == tempNamedArg[1].charAt(j)) {
                currentNamedArg.setValue("true");
              }
            }
          }
        }
      }
    }
  }
 private ArrayList<String> getPositionalArgs(String[] args) {
   ArrayList<String> posArgList = new ArrayList<String>();
   for (int i = 0; i < args.length; i++) { // going through args from CLI
     if (!args[i].startsWith("-") && i == 0) { // test if the first arg is a positional arg
       posArgList.add(args[i]);
     } else if (!args[i].startsWith("-")) { // arg from CLI doesn't have a dash
       if (!args[i - 1].startsWith(
           "-")) { // if the one before it doesn't have a dash, then it's a pos arg
         posArgList.add(args[i]);
       } else {
         String[] tempNamedArg = new String[2];
         if (args[i - 1].startsWith("--")) {
           tempNamedArg = args[i - 1].split("--");
           for (int j = 0; j < namedArgumentList.size(); j++) { // g
             NamedArgument currentNamedArg = namedArgumentList.get(j);
             if (currentNamedArg.getName().equals(tempNamedArg[1])) {
               if (currentNamedArg.getType().equals("boolean")) { // to pos args
                 posArgList.add(args[i]);
               }
             }
           }
         } else {
           tempNamedArg = args[i - 1].split("-");
           if (tempNamedArg[1].length() == 1) {
             for (int j = 0; j < namedArgumentList.size(); j++) {
               NamedArgument currentNamedArg = namedArgumentList.get(j);
               if (Character.toString(currentNamedArg.getShortFormName())
                   .equals(tempNamedArg[1])) {
                 if (currentNamedArg.getType().equals("boolean")) {
                   posArgList.add(args[i]);
                 }
               }
             }
           } else {
             posArgList.add(args[i]);
           }
         }
       }
     }
   }
   return posArgList;
 }
  private String helpMessage() {
    String helpMessage = this.usageMessage();

    /*for(int i = 0; i < namedArgumentList.size(); i++){
    	NamedArgument namedArg = namedArgumentList.get(i);
    	helpMessage += " [" + namedArg.getName() + "]";
    }*/
    helpMessage += "\n" + programDescription + "\npositional arguments:";

    for (int i = 0; i < positionalArgumentList.size(); i++) {
      PositionalArgument currentArg = positionalArgumentList.get(i);
      helpMessage +=
          "\n["
              + currentArg.getName()
              + "] ("
              + currentArg.getType()
              + ") "
              + currentArg.getDescription();
    }

    helpMessage += "\nnamed arguments:";

    for (int i = 0; i < namedArgumentList.size(); i++) {
      NamedArgument currentArg = namedArgumentList.get(i);
      helpMessage +=
          "\n[--"
              + currentArg.getName()
              + "] [-"
              + currentArg.getShortFormName()
              + "] ("
              + currentArg.getType()
              + ") "
              + currentArg.getDescription()
              + " (optional)";
    }

    return helpMessage;
  }
  /**
   * Writes argument parser information to the specified XML file. The program name, program
   * description, positional arguments, and named arguments are saved in the file in standard XML
   * format. It also saves each aspect of the arguments such as argument name, description,
   * dataType, defaultValue, and possible value set.
   *
   * @param fileName the XML file to which all information will be written
   */
  public void writeToXMLFile(String fileName) {
    File outputFile = new File(fileName);
    try {
      PrintWriter outputFileWriter = new PrintWriter(outputFile);
      outputFileWriter.println("<?xml version=" + "\"1.0\"?>");
      outputFileWriter.println("<program>");
      outputFileWriter.println("<name>" + getProgramName() + "</name>");
      outputFileWriter.println("<description>" + getProgramDescription() + "</description>");
      outputFileWriter.println("<arguments>");

      for (int i = 0; i < positionalArgumentList.size(); i++) {
        PositionalArgument posArg = positionalArgumentList.get(i);
        outputFileWriter.println("<positional>");
        outputFileWriter.println("<name>" + posArg.getName() + "</name>");
        outputFileWriter.println("<type>" + posArg.getType() + "</type>");
        outputFileWriter.println("<description>" + posArg.getDescription() + "</description>");
        outputFileWriter.println(
            "<position>"
                + (posArg.getPosition() + 1)
                + "</position>"); // prints position starting at 1
        String[] valueSet = posArg.getValueSet();
        if (!valueSet[0].equals("")) {
          String line = "<valueset>";

          line += valueSet[0];
          for (int j = 1; j < valueSet.length; j++) {
            line += "," + valueSet[j];
          }
          line += "</valueset>";
          outputFileWriter.println(line);
        }
        // outputFileWriter.println(line);
        outputFileWriter.println("</positional>");
      }

      for (int j = 0; j < namedArgumentList.size(); j++) {
        NamedArgument namedArg = namedArgumentList.get(j);
        outputFileWriter.println("<named>");
        outputFileWriter.println("<name>" + namedArg.getName() + "</name>");
        outputFileWriter.println("<shortname>" + namedArg.getShortFormName() + "</shortname>");
        outputFileWriter.println("<type>" + namedArg.getType() + "</type>");
        outputFileWriter.println("<description>" + namedArg.getDescription() + "</description>");
        outputFileWriter.println("<default>" + namedArg.getDefaultValue() + "</default>");
        String[] valueSet = namedArg.getValueSet();
        if (!valueSet[0].equals("")) {
          String line = "<valueset>";
          line += valueSet[0];
          for (int k = 1; k < valueSet.length; k++) {
            line += "," + valueSet[k];
          }
          line += "</valueset>";
          outputFileWriter.println(line);
        }
        outputFileWriter.println("</named>");
      }

      outputFileWriter.println("</arguments>");
      outputFileWriter.println("</program>");

      outputFileWriter.close();
    } catch (Exception e) {
      System.out.println(e.getMessage());
    }
  }