Example usage for java.nio.file SimpleFileVisitor SimpleFileVisitor

Introduction

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

Prototype

protected SimpleFileVisitor() 

Source Link

Document

Initializes a new instance of this class.

Usage

From source file:ufo.test.spark.service.WordCountServiceTest.java

private void deleteRecursively(Path path) throws IOException {
    if (Files.exists(path)) {
        //delete recursively
        Files.walkFileTree(path, new SimpleFileVisitor<Path>() {
            @Override/* w  w w  .  ja va 2s.c  om*/
            public FileVisitResult visitFile(Path file, BasicFileAttributes attrs) throws IOException {
                Files.delete(file);
                return FileVisitResult.CONTINUE;
            }

            @Override
            public FileVisitResult postVisitDirectory(Path dir, IOException exc) throws IOException {
                Files.delete(dir);
                return FileVisitResult.CONTINUE;
            }
        });
    }
    assertFalse(Files.exists(path));
}

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From source file:org.phenotips.variantstore.input.vcf.VCFManager.java

@Override
public List<String> getAllIndividuals() {
    final List<String> list = new ArrayList<>();

    try {//from  w ww . j a va 2  s  .  c  o  m
        Files.walkFileTree(this.path, new SimpleFileVisitor<Path>() {
            @Override
            public FileVisitResult visitFile(Path file, BasicFileAttributes attrs) throws IOException {
                if (attrs.isDirectory()) {
                    return FileVisitResult.CONTINUE;
                }
                String id = file.getFileName().toString();
                id = StringUtils.removeEnd(id, suffix);
                list.add(id);
                return FileVisitResult.CONTINUE;
            }
        });
    } catch (IOException e) {
        logger.error("Error getting all individuals");
    }

    return list;
}

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From source file:org.zanata.sync.jobs.cache.RepoCacheImpl.java

private long copyDir(Path source, Path target) throws IOException {
    Files.createDirectories(target);
    AtomicLong totalSize = new AtomicLong(0);
    Files.walkFileTree(source, EnumSet.of(FileVisitOption.FOLLOW_LINKS), Integer.MAX_VALUE,
            new SimpleFileVisitor<Path>() {
                @Override//  www .  j  a v  a2 s.c  o  m
                public FileVisitResult preVisitDirectory(Path dir, BasicFileAttributes attrs)
                        throws IOException {
                    Path targetdir = target.resolve(source.relativize(dir));
                    try {
                        if (Files.isDirectory(targetdir) && Files.exists(targetdir)) {
                            return CONTINUE;
                        }
                        Files.copy(dir, targetdir, StandardCopyOption.REPLACE_EXISTING,
                                StandardCopyOption.COPY_ATTRIBUTES);
                    } catch (FileAlreadyExistsException e) {
                        if (!Files.isDirectory(targetdir)) {
                            throw e;
                        }
                    }
                    return CONTINUE;
                }

                @Override
                public FileVisitResult visitFile(Path file, BasicFileAttributes attrs) throws IOException {
                    if (Files.isRegularFile(file)) {
                        totalSize.accumulateAndGet(Files.size(file), (l, r) -> l + r);
                    }
                    Path targetFile = target.resolve(source.relativize(file));

                    // only copy to target if it doesn't exist or it exist but the content is different
                    if (!Files.exists(targetFile)
                            || !com.google.common.io.Files.equal(file.toFile(), targetFile.toFile())) {
                        Files.copy(file, targetFile, StandardCopyOption.REPLACE_EXISTING,
                                StandardCopyOption.COPY_ATTRIBUTES);
                    }
                    return CONTINUE;
                }
            });
    return totalSize.get();
}

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From source file:de.hybris.platform.media.storage.impl.MediaCacheRecreatorTest.java

private void cleanCacheFolder(final String folderName) throws IOException {
    Files.walkFileTree(Paths.get(System.getProperty("java.io.tmpdir"), folderName),
            new SimpleFileVisitor<Path>() {
                @Override//from w  ww  .ja v a 2  s  .  c  om
                public FileVisitResult visitFile(final Path file, final BasicFileAttributes attrs)
                        throws IOException {
                    Files.delete(file);
                    return FileVisitResult.CONTINUE;
                }

                @Override
                public FileVisitResult visitFileFailed(final Path file, final IOException exc)
                        throws IOException {
                    Files.delete(file);
                    return FileVisitResult.CONTINUE;
                }
            });
}

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From source file:org.esa.nest.util.FileIOUtils.java

public static void deleteFolder(final Path source) throws IOException {
    Files.walkFileTree(source, new SimpleFileVisitor<Path>() {
        @Override/*from ww  w . j a v  a 2  s . c o m*/
        public FileVisitResult visitFile(Path file, BasicFileAttributes attrs) throws IOException {
            Files.delete(file);
            return CONTINUE;
        }

        @Override
        public FileVisitResult postVisitDirectory(Path dir, IOException exc) throws IOException {
            if (exc == null) {
                Files.delete(dir);
                return CONTINUE;
            } else {
                throw exc;
            }
        }
    });
}

---

From source file:ch.bender.evacuate.Runner.java

/**
 * run//from www  .  jav a  2  s.c  o m
 * <p>
 * @throws Exception 
 */
public void run() throws Exception {
    checkDirectories();
    initExcludeMatchers();

    myEvacuateCandidates = new TreeMap<>();
    myFailedChainPreparations = Collections.synchronizedMap(new HashMap<>());
    myFutures = new HashSet<>();
    myExclusionDirCount = 0;
    myEvacuationDirCount = 0;
    myExclusionFileCount = 0;
    myEvacuationFileCount = 0;

    Files.walkFileTree(myBackupDir, new SimpleFileVisitor<Path>() {
        /**
         * @see java.nio.file.SimpleFileVisitor#visitFileFailed(java.lang.Object, java.io.IOException)
         */
        @Override
        public FileVisitResult visitFileFailed(Path aFile, IOException aExc) throws IOException {
            if ("System Volume Information".equals((aFile.getFileName().toString()))) {
                return FileVisitResult.SKIP_SUBTREE;
            }

            throw aExc;
        }

        @Override
        public FileVisitResult visitFile(Path file, BasicFileAttributes attrs) throws IOException {
            return Runner.this.visitFile(file, attrs);
        }

        @Override
        public FileVisitResult preVisitDirectory(Path dir, BasicFileAttributes attrs) throws IOException {
            if ("System Volume Information".equals((dir.getFileName()))) {
                return FileVisitResult.SKIP_SUBTREE;
            }

            return Runner.this.preVisitDirectory(dir, attrs);
        }

    });

    if (myEvacuateCandidates.size() == 0) {
        myLog.info("No candidates for evacuation found");
    } else {
        StringBuilder sb = new StringBuilder("\nFound candidates for evacuation:");
        myEvacuateCandidates.keySet().forEach(p -> sb.append("\n    " + p.toString()));
        myLog.info(sb.toString());
    }

    if (myDryRun) {
        myLog.debug("DryRun flag is set. Doing nothing");
        return;
    }

    if (myFutures.size() > 0) {
        myLog.debug("Waiting for all async tasks to complete");
        CompletableFuture.allOf(myFutures.toArray(new CompletableFuture[myFutures.size()])).get();
    }

    if (myFailedChainPreparations.size() > 0) {
        for (Path path : myFailedChainPreparations.keySet()) {
            myLog.error("exception occured", myFailedChainPreparations.get(path));
        }

        throw new Exception("chain preparation failed. See above error messages");
    }

    for (Path src : myEvacuateCandidates.keySet()) {
        Path dst = myEvacuateCandidates.get(src);
        Path dstParent = dst.getParent();

        if (Files.notExists(dstParent)) {
            Files.createDirectories(dstParent); // FUTURE: overtake file attributes from src
        }

        if (myMove) {
            try {
                myLog.debug(
                        "Moving file system object \"" + src.toString() + "\" to \"" + dst.toString() + "\"");
                Files.move(src, dst, StandardCopyOption.ATOMIC_MOVE);
            } catch (AtomicMoveNotSupportedException e) {
                myLog.warn("Atomic move not supported. Try copy and then delete");

                if (Files.isDirectory(src)) {
                    myLog.debug("Copying folder \"" + src.toString() + "\" to \"" + dst.toString() + "\"");
                    FileUtils.copyDirectory(src.toFile(), dst.toFile());
                    myLog.debug("Delete folder \"" + src.toString() + "\"");
                    FileUtils.deleteDirectory(src.toFile());
                } else {
                    myLog.debug("Copy file \"" + src.toString() + "\" to \"" + dst.toString() + "\"");
                    FileUtils.copyFile(src.toFile(), dst.toFile());
                    myLog.debug("Delete file \"" + src.toString() + "\"");
                    Files.delete(src);
                }
            }

        } else {
            if (Files.isDirectory(src)) {
                myLog.debug("Copying folder \"" + src.toString() + "\" to \"" + dst.toString() + "\"");
                FileUtils.copyDirectory(src.toFile(), dst.toFile());
            } else {
                myLog.debug("Copy file \"" + src.toString() + "\" to \"" + dst.toString() + "\"");
                FileUtils.copyFile(src.toFile(), dst.toFile());
            }
        }
    }

    myLog.info("\nSuccessfully terminated." + "\n             Evacuated  Skipped" + "\n    Files  : "
            + StringUtils.leftPad("" + myEvacuationDirCount, 9)
            + StringUtils.leftPad("" + myExclusionDirCount, 9) + "\n    Folders: "
            + StringUtils.leftPad("" + myEvacuationFileCount, 9)
            + StringUtils.leftPad("" + myExclusionFileCount, 9));
}

---

From source file:org.nuxeo.connect.update.standalone.PackageTestCase.java

/** Zips a directory into the given ZIP file. */
protected void createZip(File zip, Path basePath) throws IOException {
    try (ZipOutputStream zout = new ZipOutputStream(new BufferedOutputStream(new FileOutputStream(zip)))) {
        Files.walkFileTree(basePath, new SimpleFileVisitor<Path>() {
            @Override//from ww w. j a v  a2  s  . c  o  m
            public FileVisitResult visitFile(Path path, BasicFileAttributes attrs) throws IOException {
                if (attrs.isDirectory()) {
                    return FileVisitResult.CONTINUE;
                }
                String rel = basePath.relativize(path).toString();
                if (rel.startsWith(".")) {
                    return FileVisitResult.CONTINUE;
                }
                zout.putNextEntry(new ZipEntry(rel));
                try (InputStream in = Files.newInputStream(path)) {
                    org.apache.commons.io.IOUtils.copy(in, zout);
                }
                zout.closeEntry();
                return FileVisitResult.CONTINUE;
            }
        });
        zout.flush();
    }
}

---

From source file:net.librec.data.convertor.appender.SocialDataAppender.java

/**
 * Read data from the data file. Note that we didn't take care of the
 * duplicated lines.//from w  w  w .j av  a  2 s  .  co  m
 *
 * @param inputDataPath
 *            the path of the data file
 * @throws IOException if I/O error occurs during reading
 */
private void readData(String inputDataPath) throws IOException {
    // Table {row-id, col-id, rate}
    Table<Integer, Integer, Double> dataTable = HashBasedTable.create();
    // Map {col-id, multiple row-id}: used to fast build a rating matrix
    Multimap<Integer, Integer> colMap = HashMultimap.create();
    // BiMap {raw id, inner id} userIds, itemIds
    final List<File> files = new ArrayList<File>();
    final ArrayList<Long> fileSizeList = new ArrayList<Long>();
    SimpleFileVisitor<Path> finder = new SimpleFileVisitor<Path>() {
        @Override
        public FileVisitResult visitFile(Path file, BasicFileAttributes attrs) throws IOException {
            fileSizeList.add(file.toFile().length());
            files.add(file.toFile());
            return super.visitFile(file, attrs);
        }
    };
    Files.walkFileTree(Paths.get(inputDataPath), finder);
    long allFileSize = 0;
    for (Long everyFileSize : fileSizeList) {
        allFileSize = allFileSize + everyFileSize.longValue();
    }
    // loop every dataFile collecting from walkFileTree
    for (File dataFile : files) {
        FileInputStream fis = new FileInputStream(dataFile);
        FileChannel fileRead = fis.getChannel();
        ByteBuffer buffer = ByteBuffer.allocate(BSIZE);
        int len;
        String bufferLine = new String();
        byte[] bytes = new byte[BSIZE];
        while ((len = fileRead.read(buffer)) != -1) {
            buffer.flip();
            buffer.get(bytes, 0, len);
            bufferLine = bufferLine.concat(new String(bytes, 0, len)).replaceAll("\r", "\n");
            String[] bufferData = bufferLine.split("(\n)+");
            boolean isComplete = bufferLine.endsWith("\n");
            int loopLength = isComplete ? bufferData.length : bufferData.length - 1;
            for (int i = 0; i < loopLength; i++) {
                String line = new String(bufferData[i]);
                String[] data = line.trim().split("[ \t,]+");
                String userA = data[0];
                String userB = data[1];
                Double rate = (data.length >= 3) ? Double.valueOf(data[2]) : 1.0;
                if (userIds.containsKey(userA) && userIds.containsKey(userB)) {
                    int row = userIds.get(userA);
                    int col = userIds.get(userB);
                    dataTable.put(row, col, rate);
                    colMap.put(col, row);
                }
            }
            if (!isComplete) {
                bufferLine = bufferData[bufferData.length - 1];
            }
            buffer.clear();
        }
        fileRead.close();
        fis.close();
    }
    int numRows = userIds.size(), numCols = userIds.size();
    // build rating matrix
    userSocialMatrix = new SparseMatrix(numRows, numCols, dataTable, colMap);
    // release memory of data table
    dataTable = null;
}

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From source file:org.neo4j.graphdb.LuceneLabelScanStoreIT.java

private void corruptIndex(NeoStoreDataSource dataSource) throws IOException {
    File labelScanStoreDirectory = getLabelScanStoreDirectory(dataSource);
    Files.walkFileTree(labelScanStoreDirectory.toPath(), new SimpleFileVisitor<Path>() {
        @Override/*from   w w w.j  a va 2  s.c om*/
        public FileVisitResult visitFile(Path file, BasicFileAttributes attrs) throws IOException {
            Files.write(file, ArrayUtils.add(Files.readAllBytes(file), (byte) 7));
            return FileVisitResult.CONTINUE;
        }
    });
}

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From source file:com.cloudbees.clickstack.util.Files2.java

public static void chmodReadOnly(@Nonnull Path path) throws RuntimeIOException {

    SimpleFileVisitor<Path> setReadOnlyFileVisitor = new SimpleFileVisitor<Path>() {
        @Override//from w w  w  . j  a v  a  2  s. c o  m
        public FileVisitResult visitFile(Path file, BasicFileAttributes attrs) throws IOException {
            if (Files.isDirectory(file)) {
                throw new IllegalStateException("no dir expected here");
            } else {
                Files.setPosixFilePermissions(file, PERMISSION_R);
            }
            return super.visitFile(file, attrs);
        }

        @Override
        public FileVisitResult preVisitDirectory(Path dir, BasicFileAttributes attrs) throws IOException {
            Files.setPosixFilePermissions(dir, PERMISSION_RX);
            return super.preVisitDirectory(dir, attrs);
        }
    };
    try {
        Files.walkFileTree(path, setReadOnlyFileVisitor);
    } catch (IOException e) {
        throw new RuntimeIOException("Exception changing permissions to readonly for " + path, e);
    }
}

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