java IOUtils.java

Posted 2021-05-08

package fr.hugo4715.loadBalancer.utils;

import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;

public class IOUtils {
	public static void copy(File sourceLocation, File targetLocation) throws IOException {
		System.out.println("Copying " + sourceLocation.getAbsolutePath() + " to " + targetLocation);
	    if (sourceLocation.isDirectory()) {
	        copyDirectory(sourceLocation, targetLocation);
	    } else {
	        copyFile(sourceLocation, targetLocation);
	    }
	}

	private static void copyDirectory(File source, File target) throws IOException {
	    if (!target.exists()) {
	        target.mkdir();
	    }

	    for (String f : source.list()) {
	        copy(new File(source, f), new File(target, f));
	    }
	}

	private static void copyFile(File source, File target) throws IOException {        
	    try (
	            InputStream in = new FileInputStream(source);
	            OutputStream out = new FileOutputStream(target)
	    ) {
	        byte[] buf = new byte[1024];
	        int length;
	        while ((length = in.read(buf)) > 0) {
	            out.write(buf, 0, length);
	        }
	    }
	}
	
	public static void deleteDir(File file) {
		System.out.println("Deleting " + file.getAbsolutePath());

	    File[] contents = file.listFiles();
	    if (contents != null) {
	        for (File f : contents) {
	            deleteDir(f);
	        }
	    }
	    file.delete();
	}
}