Example usage for java.nio.file Files newDirectoryStream

Introduction

In this page you can find the example usage for java.nio.file Files newDirectoryStream.

Prototype

public static DirectoryStream<Path> newDirectoryStream(Path dir) throws IOException 

Source Link

Document

Opens a directory, returning a DirectoryStream to iterate over all entries in the directory.

Usage

From source file:org.freeeed.main.ActionStaging.java

private long dirSize(Path path) {
    long size = 0;
    try {/*from  w  w w  .  j av a 2s  .  co  m*/
        DirectoryStream ds = Files.newDirectoryStream(path);
        for (Object o : ds) {
            Path p = (Path) o;
            if (Files.isDirectory(p)) {
                size += dirSize(p);
            } else {
                size += Files.size(p);
            }
        }
    } catch (IOException e) {
        LOGGER.error("Dir size calculation error", e);
    }
    return size;
}

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From source file:com.buaa.cfs.utils.IOUtils.java

/**
 * Return the complete list of files in a directory as strings.<p/>
 * <p>/*from w  ww .  j av a 2  s. c  o m*/
 * This is better than File#listDir because it does not ignore IOExceptions.
 *
 * @param dir    The directory to list.
 * @param filter If non-null, the filter to use when listing this directory.
 *
 * @return The list of files in the directory.
 *
 * @throws IOException On I/O error
 */
public static List<String> listDirectory(File dir, FilenameFilter filter) throws IOException {
    ArrayList<String> list = new ArrayList<String>();
    try (DirectoryStream<Path> stream = Files.newDirectoryStream(dir.toPath())) {
        for (Path entry : stream) {
            String fileName = entry.getFileName().toString();
            if ((filter == null) || filter.accept(dir, fileName)) {
                list.add(fileName);
            }
        }
    } catch (DirectoryIteratorException e) {
        throw e.getCause();
    }
    return list;
}

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From source file:au.org.ands.vocabs.toolkit.provider.importer.SesameImporterProvider.java

/** Upload the RDF data into the Sesame repository.
 * @param taskInfo The TaskInfo object describing the entire task.
 * @param subtask The details of the subtask
 * @param results HashMap representing the result of the task.
 * @return True, iff the upload succeeded.
 *///from  ww  w . j  av  a  2 s.  c o m
public final boolean uploadRDF(final TaskInfo taskInfo, final JsonNode subtask,
        final HashMap<String, String> results) {
    RepositoryManager manager = null;
    try {
        manager = RepositoryProvider.getRepositoryManager(sesameServer);

        String repositoryID = ToolkitFileUtils.getSesameRepositoryId(taskInfo);

        Repository repository = manager.getRepository(repositoryID);
        if (repository == null) {
            // Repository is missing. This is bad.
            logger.error("Sesame uploadRDF, repository missing");
            return false;
        }

        RepositoryConnection con = null;
        try {
            con = repository.getConnection();
            // If required, remove all existing triples
            if (subtask.get("clear") != null && subtask.get("clear").booleanValue()) {
                con.clear();
            }
            Path dir = Paths.get(ToolkitFileUtils.getTaskHarvestOutputPath(taskInfo));
            try (DirectoryStream<Path> stream = Files.newDirectoryStream(dir)) {
                for (Path entry : stream) {
                    File file = new File(entry.toString());
                    logger.debug("Full path:" + entry.toAbsolutePath().toString());
                    con.add(file, "", Rio.getParserFormatForFileName(entry.toString()));
                }
            } catch (DirectoryIteratorException | IOException ex) {
                // I/O error encountered during the iteration,
                // the cause is an IOException
                results.put(TaskStatus.EXCEPTION, "Exception in Sesame uploadRDF");
                logger.error("Exception in Sesame uploadRDF:", ex);
                return false;
            }
        } catch (RDFParseException e) {
            results.put(TaskStatus.EXCEPTION, "Exception in Sesame uploadRDF");
            logger.error("Sesame uploadRDF, error parsing RDF: ", e);
            return false;
        } finally {
            if (con != null) {
                con.close();
            }
        }

        return true;
    } catch (RepositoryConfigException | RepositoryException e) {
        results.put(TaskStatus.EXCEPTION, "Exception in Sesame uploadRDF");
        logger.error("Exception in Sesame uploadRDF()", e);
    }
    return false;
}

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From source file:org.carcv.impl.core.io.FFMPEGVideoHandlerIT.java

/**
 * Test method for {@link org.carcv.impl.core.io.FFMPEGVideoHandler#copyCarImagesToDir(java.util.List, java.nio.file.Path)}.
 *
 * @throws IOException/*from  www  .  j  a v  a 2  s .c o  m*/
 */
@Test
public void testCopyCarImagesToDir() throws IOException {
    FFMPEGVideoHandler.copyCarImagesToDir(entry.getCarImages(), videoDir);
    DirectoryStream<Path> dirStream = Files.newDirectoryStream(videoDir);
    ArrayList<Path> paths = new ArrayList<>();
    for (Path p : dirStream) {
        paths.add(p);
    }
    dirStream.close();
    assertEquals(2, paths.size());

    Collections.sort(paths, new Comparator<Path>() {
        @Override
        public int compare(Path o1, Path o2) {
            return new CompareToBuilder().append(o1.getFileName().toString(), o2.getFileName().toString())
                    .toComparison();
        }
    });

    for (int i = 0; i < paths.size(); i++) {
        assertTrue(paths.get(i).getFileName().toString().startsWith(i + ""));
    }
}

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From source file:org.wso2.carbon.apimgt.rest.api.publisher.utils.ImportExportUtils.java

/**
 * Queries the list of directories available under a root directory path
 *
 * @param path full path of the root directory
 * @return Set of directory path under the root directory given by path
 * @throws APIMgtEntityImportExportException if an error occurs while listing directories
 *///from  w  ww  .j ava 2s . c o m
public static Set<String> getDirectoryList(String path) throws APIMgtEntityImportExportException {
    Set<String> directoryNames = new HashSet<>();
    try (DirectoryStream<Path> directoryStream = Files.newDirectoryStream(Paths.get(path))) {
        for (Path directoryPath : directoryStream) {
            directoryNames.add(directoryPath.toString());
        }
    } catch (IOException e) {
        throw new APIMgtEntityImportExportException("Error while listing directories under " + path, e);
    }
    return directoryNames;
}

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From source file:com.splicemachine.derby.stream.control.ControlDataSetProcessor.java

private InputStream getFileStream(String s) throws IOException {
    DistributedFileSystem dfs = SIDriver.driver().fileSystem();
    InputStream value;//from   w w w. j  a  va2 s  . c  o m
    if (dfs.getInfo(s).isDirectory()) {
        //we need to open a Stream against each file in the directory
        InputStream inputStream = null;
        boolean sequenced = false;
        try (DirectoryStream<Path> stream = Files.newDirectoryStream(dfs.getPath(s))) {
            for (Path p : stream) {
                if (inputStream == null) {
                    inputStream = newInputStream(dfs, p, StandardOpenOption.READ);
                } else {
                    inputStream = new SequenceInputStream(inputStream,
                            newInputStream(dfs, p, StandardOpenOption.READ));
                }
            }
        }
        value = inputStream;
    } else {
        value = newInputStream(dfs, dfs.getPath(s), StandardOpenOption.READ);
    }
    return value;
}

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From source file:company.gonapps.loghut.dao.TagDao.java

public List<TagDto> getList(String tagName, int year, int month) throws IOException, InvalidTagNameException {
    List<TagDto> tags = new LinkedList<>();
    rrwl.readLock().lock();/*  w  w w  .j a  v a  2s .c o  m*/
    try (DirectoryStream<Path> ds = Files.newDirectoryStream(Paths.get(settingDao.getSetting("tags.directory")
            + "/" + tagName + "/" + String.format("%04d", year) + "/" + String.format("%02d", month)))) {

        for (Path path : ds) {
            Matcher matcher = tagPathStringPattern.matcher(path.toString());
            if (matcher.find())
                tags.add(new TagDto().setName(matcher.group("name")).setPost(postDao.get(
                        Integer.parseInt(matcher.group("year")), Integer.parseInt(matcher.group("month")),
                        Integer.parseInt(matcher.group("day")), Integer.parseInt(matcher.group("number")),
                        matcher.group("secret").equals("s"))));
        }
    } finally {
        rrwl.readLock().unlock();
    }
    Collections.sort(tags, new TagDtoComparator());
    return tags;
}

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From source file:org.codice.ddf.catalog.content.impl.FileSystemStorageProvider.java

private boolean isDirectoryEmpty(Path dir) throws IOException {
    DirectoryStream<Path> dirStream = Files.newDirectoryStream(dir);
    return !dirStream.iterator().hasNext();
}

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From source file:org.corehunter.tests.data.simple.SimpleDistanceMatrixDataTest.java

@Test
public void testErroneousFiles() throws IOException {
    System.out.println(" |- Test erroneous files:");
    Path dir = Paths.get(SimpleFrequencyGenotypeDataTest.class.getResource(ERRONEOUS_FILES_DIR).getPath());
    try (DirectoryStream<Path> directory = Files.newDirectoryStream(dir)) {
        for (Path file : directory) {
            System.out.print("  |- " + file.getFileName().toString() + ": ");
            FileType type = file.toString().endsWith(".txt") ? FileType.TXT : FileType.CSV;
            boolean thrown = false;
            try {
                SimpleDistanceMatrixData.readData(file, type);
            } catch (IOException ex) {
                thrown = true;/*from   w ww . j a va 2  s . c  o m*/
                System.out.print(ex.getMessage());
            } finally {
                System.out.println();
            }
            assertTrue("File " + file + " should throw exception.", thrown);
        }
    }
}

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From source file:com.upplication.s3fs.util.AmazonS3ClientMock.java

@Override
public List<Bucket> listBuckets() throws AmazonClientException {
    List<Bucket> result = new ArrayList<>();
    try {//from   w ww .ja  v a 2 s . c o m
        for (Path path : Files.newDirectoryStream(base)) {
            String bucketName = path.getFileName().toString();
            Bucket bucket = new Bucket(bucketName);
            bucket.setOwner(getOwner(bucketName));
            bucket.setCreationDate(
                    new Date(Files.readAttributes(path, BasicFileAttributes.class).creationTime().toMillis()));
            result.add(bucket);
        }
    } catch (IOException e) {
        throw new AmazonClientException(e);
    }
    return result;
}

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