Java Path Copy nio copyResources(final URL source, final Path destination)

Description

Recursively copies the resources specified by the given URL to the destination folder.

License

Open Source License

Parameter

Parameter	Description
source	The resource to be copied (file or folder).
destination	The destination folder to copy the resource to.

Exception

Parameter	Description
IOException	If the resource couldn't be copied.

Declaration

public static void copyResources(final URL source, final Path destination) throws IOException 

Method Source Code

//package com.java2s;
/*/*from   ww w. ja  va  2 s.c  om*/
 * Copyright (c) 2006-2015 DMDirc Developers
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in
 * all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 * SOFTWARE.
 */

import java.io.IOException;
import java.net.URI;
import java.net.URISyntaxException;
import java.net.URL;
import java.nio.file.CopyOption;
import java.nio.file.DirectoryStream;
import java.nio.file.FileSystem;
import java.nio.file.FileSystems;
import java.nio.file.Files;
import java.nio.file.Path;
import java.nio.file.Paths;
import java.nio.file.StandardCopyOption;

import java.util.HashMap;
import java.util.Map;

public class Main {
    /**
     * Recursively copies the resources specified by the given URL to the destination folder.
     * Existing files will be replaced.
     *
     * @param source The resource to be copied (file or folder).
     * @param destination The destination folder to copy the resource to.
     * @throws IOException If the resource couldn't be copied.
     */
    public static void copyResources(final URL source, final Path destination) throws IOException {
        doCopyResources(source, destination, false);
    }

    private static void doCopyResources(final URL source, final Path destination, final boolean contents)
            throws IOException {
        try {
            final String path = source.toURI().toString();
            final int index = path.indexOf("!/");
            if (index > -1) {
                final String file = path.substring(0, index);
                final Map<String, String> env = new HashMap<>();
                try (final FileSystem fs = FileSystems.newFileSystem(URI.create(file), env)) {
                    doCopyRecursively(fs.getPath(path.substring(index + 2)), destination, contents,
                            StandardCopyOption.REPLACE_EXISTING);
                }
            } else {
                doCopyRecursively(Paths.get(source.toURI()), destination, contents,
                        StandardCopyOption.REPLACE_EXISTING);
            }
        } catch (URISyntaxException ex) {
            throw new IOException("Unable to get source URI", ex);
        }
    }

    private static void doCopyRecursively(final Path source, final Path destination, final boolean contents,
            final CopyOption... options) throws IOException {
        final Path destinationPath;
        if (contents) {
            destinationPath = destination;
        } else {
            destinationPath = destination.resolve(source.getFileName().toString());
        }

        if (Files.isDirectory(source)) {
            Files.createDirectories(destinationPath);
            try (DirectoryStream<Path> directoryStream = Files.newDirectoryStream(source)) {
                for (Path path : directoryStream) {
                    copyRecursively(path, destinationPath, options);
                }
            }
        } else {
            Files.copy(source, destinationPath, options);
        }
    }

    /**
     * Recursively copies one path to another. Once complete, a deep copy of the source file or
     * folder will be present in the destination directory.
     *
     * @param source The path that should be copied.
     * @param destination The directory to place copied files in.
     * @param options Options to use when copying.
     * @throws IOException If any files couldn't be copied.
     */
    public static void copyRecursively(final Path source, final Path destination, final CopyOption... options)
            throws IOException {
        doCopyRecursively(source, destination, false, options);
    }
}

Related

1. copyRecursively(final Path source, final Path destination, final CopyOption... options)
2. copyRecursively(Path source, Path target, AtomicLong bytesCounter, CopyOption... copyOptions)
3. copyRecursivelyHelper(Path source, Path target, AtomicLong bytesCounter, CopyOption... copyOptions)
4. copyResource(String resourceLocation, Path target)
5. copyResource(String source, Path target, Class cls)
6. copyToDir(Path source, Path targetDir, CopyOption... options)
7. copyTree(final Path source, final Path target)
8. createDirectories(Path currentRestorePath)
9. createDirectories(Path path, FileAttribute... attrs)