Java Copy Directory copyDirectory(File srcFile, File destFile)

Description

copy Directory

License

Open Source License

Declaration

public static int copyDirectory(File srcFile, File destFile)

Method Source Code

//package com.java2s;
/*/*from w w w. j  a v  a2s.c o  m*/
 This file is part of the BlueJ program. 
 Copyright (C) 1999-2009,2014  Michael Kolling and John Rosenberg 
     
 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 2 
 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, write to the Free Software 
 Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA. 
     
 This file is subject to the Classpath exception as provided in the  
 LICENSE.txt file that accompanied this code.
 */

import java.io.*;

public class Main {
    /**
     * Copy (recursively) a whole directory.
     */
    public static final int NO_ERROR = 0;
    public static final int SRC_NOT_DIRECTORY = 2;
    public static final int COPY_ERROR = 3;
    public static final int DEST_EXISTS_NOT_DIR = 4;
    public static final int DEST_EXISTS_NON_EMPTY = 5;

    public static int copyDirectory(File srcFile, File destFile) {
        if (!srcFile.isDirectory())
            return SRC_NOT_DIRECTORY;

        if (destFile.exists() && !destFile.isDirectory())
            return DEST_EXISTS_NOT_DIR;

        // It's okay if it exists ,provided it is empty:
        if (destFile.exists()) {
            if (destFile.list().length > 0)
                return DEST_EXISTS_NON_EMPTY;
        } else {
            if (!destFile.mkdir())
                return COPY_ERROR;
        }

        String[] dir = srcFile.list();
        for (int i = 0; i < dir.length; i++) {
            //String srcName = source + File.separator + dir[i];
            File file = new File(srcFile, dir[i]);
            if (file.isDirectory()) {
                if (copyDirectory(file, new File(destFile, dir[i])) != NO_ERROR)
                    return COPY_ERROR;
            } else {
                File file2 = new File(destFile, dir[i]);
                try {
                    copyFile(file, file2);
                } catch (IOException ioe) {
                    return COPY_ERROR;
                }
            }
        }
        return NO_ERROR;
    }

    /**
     * Copy file 'source' to file 'dest'. The source file must exist,
     * the destination file will be created. Returns true if successful.
     */
    public static void copyFile(String source, String dest) throws IOException {
        File srcFile = new File(source);
        File destFile = new File(dest);

        copyFile(srcFile, destFile);
    }

    /**
     * Copy file 'srcFile' to file 'destFile'. The source file must exist,
     * the destination file will be created. Returns true if successful.
     */
    public static void copyFile(File srcFile, File destFile) throws IOException {
        // check whether source and dest are the same
        if (srcFile.equals(destFile)) {
            return; // don't bother - they are the same
        }

        InputStream in = null;
        OutputStream out = null;

        try {
            in = new BufferedInputStream(new FileInputStream(srcFile));
            out = new BufferedOutputStream(new FileOutputStream(destFile));
            copyStream(in, out);
        } finally {
            if (in != null) {
                in.close();
            }
            if (out != null) {
                out.close();
            }
        }
    }

    /**
     * Copy stream 'in' to stream 'out'.
     */
    public static void copyStream(InputStream in, OutputStream out) throws IOException {
        for (int c; (c = in.read()) != -1;)
            out.write(c);
    }
}

Java Copy Directory copyDirectory(File srcFile, File destFile)

Description

License

Declaration

Method Source Code

Related