package jalview.util;

import org.json.simple.JSONArray;

public class JSONUtils
{

  /**
   * Converts a JSONArray of values to a string as a comma-separated list.
   * Answers null if the array is null or empty.
   * 
   * @param jsonArray
   * @return
   */
  public static String arrayToList(JSONArray jsonArray)
  {
    if (jsonArray == null)
    {
      return null;
    }

    StringBuilder sb = new StringBuilder();
    for (int i = 0; i < jsonArray.size(); i++)
    {
      if (i > 0)
      {
        sb.append(",");
      }
      sb.append(jsonArray.get(i).toString());
    }
    return sb.length() == 0 ? null : sb.toString();
  }

}