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package com.redstoner.misc;
import java.io.File;
import java.io.FileReader;
import java.io.FileWriter;
import java.io.IOException;
import org.json.simple.JSONArray;
import org.json.simple.JSONObject;
import org.json.simple.parser.JSONParser;
import org.json.simple.parser.ParseException;
import com.redstoner.annotations.Version;
/** This class provides simple JSON handling, like storing and loading from and to files.
*
* @author Pepich */
@Version(major = 1, minor = 0, revision = 1, 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()
{
if (destination.exists())
destination.delete();
else if (!destination.getParentFile().exists())
destination.getParentFile().mkdirs();
try
{
destination.createNewFile();
FileWriter writer = new FileWriter(destination);
object.writeJSONString(writer);
writer.flush();
writer.close();
}
catch (IOException e)
{}
}
});
t.start();
}
/** 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()
{
if (destination.exists())
destination.delete();
else if (!destination.getParentFile().exists())
destination.getParentFile().mkdirs();
try
{
destination.createNewFile();
FileWriter writer = new FileWriter(destination);
array.writeJSONString(writer);
writer.flush();
writer.close();
}
catch (IOException e)
{}
}
});
t.start();
}
}
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