Java File Copy copyFiles(File sourceFile, File targetDir)

Description

Copies an existing structure to a new destination.

License

Apache License

Parameter

Parameter	Description
sourceFile	a parameter
targetDir	a parameter

Declaration

public static void copyFiles(File sourceFile, File targetDir) 

Method Source Code

//package com.java2s;
/* //  w  w w  .  j a  v  a2 s .  c  o  m
 * Licensed to the soi-toolkit project under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The soi-toolkit project licenses this file to You under the Apache License, Version 2.0
 * (the "License"); you may not use this file except in compliance with
 * the License.  You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

import java.io.File;

import java.io.FileInputStream;
import java.io.FileOutputStream;

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

public class Main {
    /**
     * Copies an existing structure to a new destination.
     * 
     * @param sourceFile
     * @param targetDir
     */
    public static void copyFiles(File sourceFile, File targetDir) {
        copyFiles(sourceFile, sourceFile, targetDir);
    }

    public static void copyFiles(File rootDir, File sourceFile, File targetDir) {

        File[] files = sourceFile.listFiles();

        if (files != null) {
            for (File file : files) {
                String relativePath = getRelativePath(file, rootDir);
                File target = new File(targetDir + "/" + relativePath);

                if (!target.exists() && file.isHidden() == false) {
                    if (file.isDirectory()) {
                        target.mkdir();
                        copyFiles(rootDir, file, targetDir);
                    } else {
                        copyFile(file, target);
                    }
                }
            }
        }
    }

    /**
     * Returns the relative path.
     * 
     * @param file
     * @param srcDir
     * @return the relative path
     */
    public static String getRelativePath(File file, File srcDir) {

        String base = srcDir.getPath();
        String filePath = file.getPath();

        String relativePath = new File(base).toURI().relativize(new File(filePath).toURI()).getPath();
        return relativePath;
    }

    /**
     * Copy a file to new destination.
     * 
     * @param srcFile
     * @param destFile
     */
    public static void copyFile(File srcFile, File destFile) {
        OutputStream out = null;
        InputStream in = null;
        try {
            if (!destFile.getParentFile().exists())
                destFile.getParentFile().mkdirs();

            in = new FileInputStream(srcFile);
            out = new FileOutputStream(destFile);

            // Transfer bytes from in to out
            byte[] buf = new byte[1024];
            int len;
            while ((len = in.read(buf)) > 0) {
                out.write(buf, 0, len);
            }
            in.close();
            out.close();
        } catch (IOException e) {
            throw new RuntimeException(e);
        }
    }
}

Related

1. copyFile(File src, File dest, Component parentComponent, String message)
2. copyFileFromFileSystem(String sourceFileName, File target)
3. copyFiles(File file, File destPath)
4. copyFiles(File fromDir, File toDir)
5. copyFiles(File source, File destination)
6. copyFiles(File src, File dest)
7. copyFiles(File src, File dest)
8. copyFiles(File src, File dest, boolean override)
9. copyFiles(File src, File dest, FilenameFilter filter)