Java File Rename renameFile(File srcFile, File destFile)

Description

rename File

License

Apache License

Declaration

public static boolean renameFile(File srcFile, File destFile) 

Method Source Code

//package com.java2s;
/*#######################################################
 *
 *   Maintained by Gregor Santner, 2017-
 *   https://gsantner.net//*from  w  w  w  .j a va  2s .c  om*/
 *
 *   License: Apache 2.0
 *  https://github.com/gsantner/opoc/#licensing
 *  https://www.apache.org/licenses/LICENSE-2.0
 *
#########################################################*/

import java.io.File;
import java.io.FileInputStream;

import java.io.FileOutputStream;

import java.io.IOException;
import java.io.InputStream;

import java.util.Locale;
import java.util.UUID;

public class Main {
    private static final int BUFFER_SIZE = 4096;

    public static boolean renameFile(File srcFile, File destFile) {
        if (srcFile.getAbsolutePath().equals(destFile.getAbsolutePath())) {
            return false;
        }

        // renameTo will fail in case of case-changed filename in same dir.Even on case-sensitive FS!!!
        if (srcFile.getParent().equals(destFile.getParent()) && srcFile.getName().toLowerCase(Locale.getDefault())
                .equals(destFile.getName().toLowerCase(Locale.getDefault()))) {
            File tmpFile = new File(destFile.getParent(), UUID.randomUUID().getLeastSignificantBits() + ".tmp");
            if (!tmpFile.exists()) {
                renameFile(srcFile, tmpFile);
                srcFile = tmpFile;
            }
        }

        if (!srcFile.renameTo(destFile)) {
            if (copyFile(srcFile, destFile) && !srcFile.delete()) {
                if (!destFile.delete()) {
                    return false;
                }
                return false;
            }
        }
        return true;
    }

    public static boolean copyFile(final File src, final File dst) {
        // Just touch file if src is empty
        if (src.length() == 0) {
            return touch(dst);
        }

        InputStream is = null;
        FileOutputStream os = null;
        try {
            try {
                is = new FileInputStream(src);
                os = new FileOutputStream(dst);
                byte[] buf = new byte[BUFFER_SIZE];
                int len;
                while ((len = is.read(buf)) > 0) {
                    os.write(buf, 0, len);
                }
                return true;
            } finally {
                if (is != null) {
                    is.close();
                }
                if (os != null) {
                    os.close();
                }
            }
        } catch (IOException ex) {
            return false;
        }
    }

    public static boolean touch(File file) {
        try {
            if (!file.exists()) {
                new FileOutputStream(file).close();
            }
            return file.setLastModified(System.currentTimeMillis());
        } catch (IOException e) {
            return false;
        }
    }
}

Related

1. renameFile(File source, File dest)
2. renameFile(File sourceFile, String newFileName)
3. renameFile(File src, File dest)
4. renameFile(File src, File dest)
5. renameFile(File src, File dest, boolean overwrite)
6. renameFile(File srcFile, File dstFile)
7. renameFile(File srcFile, File renameToFile)
8. renameFile(final File path, final String fname)
9. renameFile(final String oldName, final String newName)