Java BufferedInputStream Copy copyFileUnique(File in, File outDir)

Description

Write file with an unique name.

License

Open Source License

Declaration

static public File copyFileUnique(File in, File outDir) 

Method Source Code

//package com.java2s;
/*//  www .ja v a 2  s .com
 * photo-manager is a program to manage and organize your photos; Copyright (C) 2010 Dietrich Hentschel
 *
 * 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., 675 Mass Ave, Cambridge, MA 02139, USA.
 */

import java.io.*;

public class Main {
    /**
     * Write file with an unique name.
     *
     */
    static public File copyFileUnique(File in, File outDir) {
        if (in.isFile() == false || outDir.isDirectory() == false) {
            return null;
        }

        // make outFile
        int n = 0;
        String name = getWithoutExtension(in.getName());
        String ext = getExtension(in.getName());
        File out = new File(outDir.getPath() + File.separator
                + in.getName());
        while (out.isFile()) {
            n++;
            out = new File(outDir.getPath() + File.separator + name + "_"
                    + n + "." + ext);
        }
        if (copyFile(in, out)) {
            return out;
        }
        return null;
    }

    public static String getWithoutExtension(String name) {

        int i = name.lastIndexOf('.');

        if (i > 0 && i < name.length() - 1) {
            return name.substring(0, i);
        }
        return name;
    }

    public static String getExtension(File f) {
        String ext = "";
        String s = f.getName();
        int i = s.lastIndexOf('.');

        if (i > 0 && i < s.length() - 1) {
            ext = s.substring(i + 1);
        }
        return ext;
    }

    public static String getExtension(String s) {
        String ext = "";
        // String s = f.getName();
        int i = s.lastIndexOf('.');

        if (i > 0 && i < s.length() - 1) {
            ext = s.substring(i + 1);
        }
        return ext;
    }

    static public boolean copyFile(File in, File out) {

        BufferedInputStream bufin = null;
        BufferedOutputStream bufout = null;

        try {
            FileInputStream fis = new FileInputStream(in);
            bufin = new BufferedInputStream(fis);

            out.delete();
            FileOutputStream fos = new FileOutputStream(out);
            bufout = new BufferedOutputStream(fos);

            byte[] buffer = new byte[1024];
            int len;
            while (bufin.available() != 0) {
                len = bufin.read(buffer);
                bufout.write(buffer, 0, len);
            }
            ;
        } // try
        catch (FileNotFoundException fnfe) {
            // System.out.println(in.getPath() + " does not exist!");
        } catch (IOException ioe) {
            // System.out.println("Error reading/writing files!");
        } finally {
            try {
                if (bufin != null)
                    bufin.close();
                if (bufout != null)
                    bufout.close();
            } catch (IOException ioe) {
            }
        }

        return true;
    }
}

Related

1. copyFileNormal(File copyFrom, File copyTo)
2. copyFileToFile(File in, File out)
3. copyFileToStream(File from, OutputStream out)
4. copyFileToStream(File input, OutputStream os)
5. copyFileToTemp(InputStream is, String dirName, String fileName)