/*
 * Click nbfs://nbhost/SystemFileSystem/Templates/Licenses/license-default.txt to change this license
 * Click nbfs://nbhost/SystemFileSystem/Templates/Classes/Class.java to edit this template
 */
package com.megatim.fdxcommons.tools;

import java.io.BufferedInputStream;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.IOException;
import java.io.InputStream;
import java.nio.charset.Charset;
import java.nio.charset.UnsupportedCharsetException;
import org.apache.tika.parser.txt.CharsetDetector;
import org.apache.tika.parser.txt.CharsetMatch;

/**
 *
 * @author ASUS
 */
public class FileUtilities {
    public static Charset getCharset(File file) throws FileNotFoundException, IOException {
        
        try ( InputStream stream = new FileInputStream(file);  InputStream input = new BufferedInputStream(stream);) {
            CharsetDetector charsetDetector = new CharsetDetector();

            charsetDetector.setText(input);

            CharsetMatch charsetMatch = charsetDetector.detect();
            String charsetName = charsetMatch != null ? charsetMatch.getName() : "UTF-8";

            return Charset.forName(charsetName);

        } catch(UnsupportedCharsetException ex) {
             return Charset.forName("UTF-8");
        }
    }
}