Java Path Create nio createHiddenFile(String filePath)

Description

Creates a hidden file based on the directory and file name given.

License

Open Source License

Parameter

Parameter	Description
filePath	path to file

Declaration

public static void createHiddenFile(String filePath) 

Method Source Code

//package com.java2s;
/**//from   w  w w .  j  av a2  s  .  c  o m
 * An xkcd comic-viewer made in Java.
 * Copyright (C) 2017 dcarpinelli
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */

import java.io.File;

import java.io.IOException;

import java.nio.file.Files;

import java.nio.file.Paths;

public class Main {
    public static final int OTHER = 0, WINDOWS = 1, MACINTOSH = 2, LINUX = 3;

    /**
     * Creates a hidden file based on the directory and file name given. Will
     * check for suffixes to prevent errors.
     *
     * @param filePath path to file
     */
    public static void createHiddenFile(String filePath) {
        String directory = filePath.substring(0, filePath.lastIndexOf(File.separator) + 1);
        directory = checkDir(directory);
        String fileName = filePath.substring(filePath.lastIndexOf(File.separator) + 1);
        // CREATE ANY MISSING DIRECTORIES
        new File(directory).mkdirs();
        try {
            File file = null;
            switch (detectOS()) {
            case WINDOWS:
                // CREATE FILE
                file = new File(directory + fileName);
                file.createNewFile();
                // SET FILE TO HIDDEN
                Files.setAttribute(Paths.get(directory, fileName), "dos:hidden", true);
                break;
            case MACINTOSH:
            case LINUX:
                // CHECK FOR HIDDEN ATTRIBUTE
                if (!fileName.startsWith(".")) {
                    fileName = "." + fileName;
                }
                // CREATE FILE
                file = new File(directory + fileName);
                file.createNewFile();
                break;
            default:
                System.err.println("[FileUtil : createHiddenFile] Detected OS is not supported.");
            }
        } catch (IOException e) {
            e.printStackTrace();
        }
    }

    /**
     * Checks the given directory for its suffix, ('/' and '\', depending on the
     * detected OS. If no suffix is found, it is added to prevent errors in
     * other methods.
     *
     * @param directory the directory whose suffix is to be checked
     * @return the directory as a string, ensuring it ends with the correct character
     */
    public static String checkDir(String directory) {
        switch (detectOS()) {
        case OTHER:
            System.err.println("[FileUtil : checkDir] Detected OS is not supported.");
            return null;
        default:
            if (!directory.endsWith(File.separator)) {
                directory += File.separator;
            }
            return directory;
        }
    }

    /**
     * Checks the operating system FilUtil is being used by. Only specifies
     * Windows, Macintosh, and Linux.
     *
     * @return integer in relation to detected operating system
     */
    public static int detectOS() {
        int osState;
        String os = System.getProperty("os.name").toLowerCase();
        if (os.contains("windows")) {
            osState = WINDOWS;
        } else if (os.contains("mac")) {
            osState = MACINTOSH;
        } else if (os.contains("linux")) {
            osState = LINUX;
        } else {
            osState = OTHER;
        }
        return osState;
    }
}

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