net.mograsim.logic.ui/src/net/mograsim/logic/ui/util/JsonHandler.java

   1 package net.mograsim.logic.ui.util;
   2
   3 import java.io.BufferedReader;
   4 import java.io.FileReader;
   5 import java.io.FileWriter;
   6 import java.io.IOException;
   7
   8 import com.google.gson.Gson;
   9 import com.google.gson.GsonBuilder;
  10
  11 public class JsonHandler
  12 {
  13         private static Gson parser = new GsonBuilder().setPrettyPrinting().create();
  14
  15         @SuppressWarnings("resource")
  16         public static <T> T readJson(String path, Class<T> type) throws IOException
  17         {
  18                 FileReader reader = new FileReader(path);
  19                 BufferedReader bf = new BufferedReader(reader);
  20                 bf.readLine(); // Skip version
  21                 String json = bf.lines().dropWhile(s -> s.length() == 0 || s.charAt(0) != '{').reduce("", (x, y) -> x.concat(y));
  22                 T params = parser.fromJson(json, type);
  23                 reader.close();
  24                 return params;
  25         }
  26
  27         public static void writeJson(Object o, String path) throws IOException
  28         {
  29                 @SuppressWarnings("resource")
  30                 FileWriter writer = new FileWriter(path);
  31                 writer.write(String.format("mograsim version: %s\n", Version.current.toString()));
  32                 writer.write(parser.toJson(o));
  33                 writer.close(); // TODO: Insure that writer is closed
  34         }
  35 }