ch.cern.mig.utils.FileUtils Maven / Gradle / Ivy

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package ch.cern.mig.utils;

import java.io.BufferedOutputStream;
import java.io.BufferedWriter;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.FileWriter;
import java.io.IOException;
import java.util.Scanner;

/**
 * @author Massimo Paladin - [email protected] 

 *         Copyright (C) CERN 2012-2013
 */
public class FileUtils {

    public static void writeToFile(File path, byte[] data) throws IOException {
        FileOutputStream newFileStream = new FileOutputStream(path);
        BufferedOutputStream newFileOut = new BufferedOutputStream(
                newFileStream);
        newFileOut.write(data);
        newFileOut.close();
        newFileStream.close();
    }

    public static void writeToFile(String path, byte[] data) throws IOException {
        writeToFile(new File(path), data);
    }

    public static void writeToFile(File path, String data) throws IOException {
        FileWriter newFileStream = new FileWriter(path);
        BufferedWriter newFileOut = new BufferedWriter(newFileStream);
        newFileOut.write(data);
        newFileOut.close();
        newFileStream.close();
    }

    public static void writeToFile(String path, String data) throws IOException {
        writeToFile(new File(path), data);
    }

    public static String readToString(String path) {
        return readToString(new File(path));
    }

    public static String readToString(File tmp) {
        String content = "";
        try {
            content = new Scanner(tmp, "UTF-8").useDelimiter("\\A").next();
        } catch (FileNotFoundException e) {
            return null;
        }
        return content;
    }

    public static byte[] readToByteArray(String path) {
        return readToByteArray(new File(path));
    }

    public static byte[] readToByteArray(File file) {
        byte content[] = null;
        try {
            FileInputStream fileInputStream = new FileInputStream(file);
            content = new byte[(int) file.length()];
            fileInputStream.read(content);
        } catch (FileNotFoundException e) {
            return null;
        } catch (IOException ioe) {
            return null;
        }
        return content;
    }

    public static boolean deleteDir(File dir) {
        if (dir.isDirectory()) {
            String[] children = dir.list();
            for (int i = 0; i < children.length; i++) {
                boolean success = deleteDir(new File(dir, children[i]));
                if (!success) {
                    return false;
                }
            }
        }
        return dir.delete();
    }
}