Java Path Copy nio copy(Path src, Path dest, List globPattern)

Description

Copy the src file/dir to the dest path recursively.

License

Apache License

Parameter

Parameter	Description
src	source file /dir path
dest	destination path to copy
globPattern	glob patterns to filter out when copying. Note: Glob pattern matching is case sensitive.

Exception

Parameter	Description
IOException	throws if any error copying the file/dir.

Declaration

public static void copy(Path src, Path dest, List<String> globPattern) throws IOException 

Method Source Code

//package com.java2s;
/*******************************************************************************
 *
 *   Copyright 2017 Walmart, Inc.//from   w  ww.j av a 2s .c o  m
 *
 *   Licensed 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 static java.nio.file.StandardCopyOption.REPLACE_EXISTING;

import java.io.IOException;
import java.nio.file.FileSystem;
import java.nio.file.FileSystems;
import java.nio.file.Files;
import java.nio.file.Path;
import java.nio.file.PathMatcher;
import java.util.Collections;

import java.util.List;
import java.util.stream.Collectors;
import java.util.stream.Stream;

public class Main {
    /**
     * Copy the src file/dir to the dest path recursively.
     * This will replace the file if it's already exists.
     *
     * @param src source file /dir path
     * @param dest destination path to copy
     * @param globPattern glob patterns to filter out when copying.
     * Note: Glob pattern matching is case sensitive.
     * @throws IOException throws if any error copying the file/dir.
     */
    public static void copy(Path src, Path dest, List<String> globPattern) throws IOException {
        // Make sure the target dir exists.
        dest.toFile().mkdirs();

        // Create path matcher from list of glob pattern strings.
        FileSystem fs = FileSystems.getDefault();
        List<PathMatcher> matchers = globPattern.stream().map(pattern -> fs.getPathMatcher("glob:" + pattern))
                .collect(Collectors.toList());

        try (Stream<Path> stream = Files.walk(src)) {
            // Filter out Glob pattern
            stream.filter(path -> {
                Path name = src.relativize(path);
                return matchers.stream().noneMatch(m -> m.matches(name));
            }).forEach(srcPath -> {
                try {
                    Path target = dest.resolve(src.relativize(srcPath));
                    // Don't try to copy existing dir entry.
                    if (!target.toFile().isDirectory()) {
                        Files.copy(srcPath, target, REPLACE_EXISTING);
                    }
                } catch (IOException e) {
                    throw new IllegalStateException(e);
                }
            });
        }
    }

    /**
     * Copy the src file/dir to the dest path recursively.
     * This will replace the file if it's already exists.
     *
     * @param src source file /dir path
     * @param dest destination path to copy
     * @throws IOException throws if any error copying the file/dir.
     */
    public static void copy(Path src, Path dest) throws IOException {
        copy(src, dest, Collections.emptyList());
    }
}

Related

1. copy(Path source, Path destination)
2. copy(Path source, Path target)
3. copy(Path source, Path target, CopyOption... options)
4. copy(Path sourcePath, Path destinationPath)
5. copy(Path sourcePath, Path targetPath)
6. copy(String filePath, String fileName)
7. copyAlways(Path source, Path target)
8. copyAsTrueTempFile(Path source, FileAttribute... attrs)
9. copyConfigFile(final String file, final Path dir)