How to move all contents of Directory (not including Parent) to another directory Groovy

Question

I have a groovy script which takes a 2 zip files, unzips them, then processes them.

The problem I have is when I go to unzip the zip files, each unzipped file produces a subfolder then the content of the unzip file not the content itself.

Example:

Currently this happens when I unzip

content-1232.zip -> /content-1232/content/<all content here>

What I want is

content-1232.zip -> /content-1232/<all_content>

or

Put into a new directory

content-1232.zip -> /new_directory/<all_content>

I tried this but to no avail:

Path basePath = Paths.get(output.getAbsolutePath())
Path srcPath = Paths.get(pdfContent.getAbsolutePath())
Path targetPath = basePath

Files.move(srcPath, targetPath.resolve(basePath.relativize(srcPath)))

Seems like a very simple thing to do but I'm not have any luck. How can I accomplish this in groovy? Any help will be appreciated

Edit:

static void main(String[] args) {
    logger.info("Beginning unpacking of content...")


    def output = new File("/Users/Haddad/Desktop/workspace/c")
    def pdfContent = new File("/Users/Haddad/Desktop/workspace/c/pdf-content")


    // Look for test1 and test2 production content zip file, ensure there's only 1 and unzip
    List appZip = FileUtil.discoverFiles(output, true, "test1-production-content-.*\\.zip")
    List compliZip = FileUtil.discoverFiles(output,true,"test2-production-content-.*\\.zip")

    assert appZip.size() == 1, "Did not find expected number of test1 content zip, actual size is: " + appZip.size()
    assert compliZip.size() == 1, "Did not find expected number of test2 content zip, actual size is " + appZip.size()

    def outputAppZip = new File(output.getAbsolutePath()+"/"+appZip.get(0).getName()+"-intermediate");
    def outputCompliZip = new File(output.getAbsolutePath()+"/"+compliZip.get(0).getName()+"-intermediate");

    ZipUtil.unzipToDisk(appZip.get(0), outputAppZip )
    ZipUtil.unzipToDisk(compliZip.get(0), outputCompliZip )


    // move it to pdf content
    List applicationContent = FileUtil.discoverDirectories(output, "one-production-content-.*-intermediate", true)
    assert applicationContent.size() == 1, "Did not find expected number of test1 contents " + applicationContent.size()

    def success = FileUtil.copy(applicationContent.get(0), pdfContent)
    assert success, "Could not copy tt content"

    // move pdf content
    List complianceContent = FileUtil.discoverDirectories(output, "two-production-content-.*-intermediate", true)
    assert complianceContent.size() == 1, "Did not find expected number of test2 contents " + complianceContent.size()
    success = FileUtil.copy(complianceContent.get(0), pdfContent)
    assert success, "Could not copy pdf content"

    // rename to not be unsupported
    List unsupportedDirs = FileUtil.discoverDirectories(pdfContent, "_unsupported_.*", true)
    for (File file : unsupportedDirs) {
        file.renameTo(new File(file.getParentFile(), file.getName().replace("_unsupported_", "")))
    }


    logger.info("Completed!")
}

Answer 1

How about this?

Input:

test.zip
--- test
------ test.txt

Output:

<someFolder>
--- test.txt

Code:

public class Main {

    public static void main(String[] args) throws IOException {
        Main main = new Main();

        Path input = main.getInputPath(args);
        Path output = main.getOutputPath(args);

        main.extract(input, output);
        main.flatten(output);
    }

    private final Path getInputPath(String[] args) {
        if (args.length < 1) {
            throw new IllegalArgumentException("Usage: Main <inputFile> [<outputDirectory>]");
        }

        Path input = Paths.get(args[0]);

        if (!isRegularFile(input)) {
            throw new IllegalArgumentException(String.format("%s is not a file.", input.toFile().getAbsolutePath()));
        }

        return input;
    }

    private final Path getOutputPath(String[] args) throws IOException {
        return args.length < 2 ? Files.createTempDirectory(null) :
                Files.createDirectories(Paths.get(args[1]));
    }

    private final void extract(Path input, Path output) throws IOException {
        try (ZipInputStream zis = new ZipInputStream(new FileInputStream(input.toFile()))) {
            for (ZipEntry ze = zis.getNextEntry(); ze != null; ze = zis.getNextEntry()) {
                String fileName = ze.getName();

                if (fileName.contains("__MACOSX")) {
                    continue;
                }

                File file = new File(output.toFile(), fileName);

                if (ze.isDirectory()) {
                    Files.createDirectories(file.toPath());
                    continue;
                }

                System.out.println("Extracting: " + file.getAbsolutePath());

                try (FileOutputStream fos = new FileOutputStream(file, true)) {
                    byte[] buffer = new byte[4096];
                    for (int len = zis.read(buffer); len > 0; len = zis.read(buffer)) {
                        fos.write(buffer, 0, len);
                    }
                }
            }
        }
    }

    private final void flatten(Path output) throws IOException {
        List<Path> children = Files.list(output)
                .collect(toList());

        if (children.size() == 1) {
            Path path = children.get(0);
            Files.list(path)
                    .forEach(f -> {
                        try {
                            System.out.printf("Moving %s to %s.\n", f.toFile().getAbsolutePath(),
                                    output.toFile().getAbsolutePath());
                            Files.move(f, Paths.get(output.toFile().getAbsolutePath(), f.toFile().getName()));
                        } catch (IOException e) {
                            throw new UncheckedIOException(e);
                        }
                    });

            Files.delete(path);
        }
    }
}