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package com.redstoner.misc;
import com.redstoner.annotations.Version;
import org.json.simple.JSONArray;
import org.json.simple.JSONObject;
import org.json.simple.parser.JSONParser;
import org.json.simple.parser.ParseException;
import java.io.File;
import java.io.FileReader;
import java.io.FileWriter;
import java.io.IOException;
/**
* This class provides simple JSON handling, like storing and loading from and to files.
*
* @author Pepich
*/
@Version (major = 1, minor = 0, revision = 2, compatible = -1)
public class JsonManager {
private JsonManager() {}
/**
* Loads a JSONObject from a file.
*
* @param source the file to load from.
*
* @return the JSONObject or null if the source does not contain a valid JSONObject.
*/
public static JSONObject getObject(File source) {
if (!source.exists())
return null;
JSONParser parser = new JSONParser();
try {
FileReader reader = new FileReader(source);
Object rawObject = parser.parse(reader);
reader.close();
JSONObject jsonObject = (JSONObject) rawObject;
return jsonObject;
} catch (IOException | ParseException e) {
}
return null;
}
/**
* Saves a JSONObject to a file. Will create the necessary FileStructure like folders and the file itself.</br>
* Note that this operation will be run on a different thread and you do not need to take care of that yourself.
*
* @param object the JSONObject to save.
* @param destination the file to write to.
*/
public static void save(JSONObject object, File destination) {
Thread t = new Thread(new Runnable() {
@Override
public void run() {
saveSync(object, destination);
}
});
t.start();
}
/**
* Saves a JSONObject to a file. Will create the necessary FileStructure like folders and the file itself.</br>
* Note that this operation will be run on the same thread that you are calling it from!
*
* @param object the JSONObject to save.
* @param destination the file to write to.
*/
public static void saveSync(JSONObject object, File destination) {
if (destination.exists())
destination.delete();
else if (!destination.getParentFile().exists())
destination.getParentFile().mkdirs();
try {
destination.createNewFile();
FileWriter writer = new FileWriter(destination);
String json_string = object.toJSONString();
writer.write(json_string);
writer.flush();
writer.close();
} catch (IOException e) {
}
}
/**
* Loads a JSONArray from a file.
*
* @param source the file to load from.
*
* @return the JSONArray or null if the source does not contain a valid JSONArray.
*/
public static JSONArray getArray(File source) {
if (!source.exists())
return null;
JSONParser parser = new JSONParser();
try {
Object rawObject = parser.parse(new FileReader(source));
JSONArray jsonArray = (JSONArray) rawObject;
return jsonArray;
} catch (IOException | ParseException e) {
}
return null;
}
/**
* Saves a JSONArray to a file. Will create the necessary FileStructure like folders and the file itself.</br>
* Note that this operation will be run on a different thread and you do not need to take care of that yourself.
*
* @param object the JSONArray to save.
* @param destination the file to write to.
*/
public static void save(JSONArray array, File destination) {
Thread t = new Thread(new Runnable() {
@Override
public void run() {
saveSync(array, destination);
}
});
t.start();
}
/**
* Saves a JSONArray to a file. Will create the necessary FileStructure like folders and the file itself.</br>
* Note that this operation will be run on the same thread that you are calling it from!
*
* @param object the JSONArray to save.
* @param destination the file to write to.
*/
public static void saveSync(JSONArray array, File destination) {
if (destination.exists())
destination.delete();
else if (!destination.getParentFile().exists())
destination.getParentFile().mkdirs();
try {
destination.createNewFile();
FileWriter writer = new FileWriter(destination);
String json_string = array.toJSONString();
writer.write(json_string);
writer.flush();
writer.close();
} catch (IOException e) {
}
}
}
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