Example usage for java.nio.file FileVisitor FileVisitor

Introduction

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

Prototype

FileVisitor

Source Link

Usage

From source file:org.schedulesdirect.grabber.Grabber.java

private void removeUnusedPrograms(FileSystem vfs) throws IOException {
    final int[] i = new int[] { 0 };
    final Path root = vfs.getPath("programs");
    Files.walkFileTree(root, new FileVisitor<Path>() {

        @Override// ww w .  j  ava  2  s.  com
        public FileVisitResult preVisitDirectory(Path dir, BasicFileAttributes attrs) throws IOException {
            return !Files.isSameFile(root, dir) ? FileVisitResult.SKIP_SUBTREE : FileVisitResult.CONTINUE;
        }

        @Override
        public FileVisitResult visitFile(Path file, BasicFileAttributes attrs) throws IOException {
            String id = file.getName(file.getNameCount() - 1).toString();
            id = id.substring(0, id.indexOf('.'));
            if (!activeProgIds.contains(id)) {
                if (LOG.isDebugEnabled())
                    LOG.debug(String.format("CacheCleaner: Unused '%s'", id));
                Files.delete(file);
                ++i[0];
            }
            return FileVisitResult.CONTINUE;
        }

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

        @Override
        public FileVisitResult postVisitDirectory(Path dir, IOException exc) throws IOException {
            return FileVisitResult.CONTINUE;
        }

    });
    LOG.info(String.format("Removed %d unused program(s).", i[0]));
}

From source file:org.schedulesdirect.grabber.Grabber.java

private void removeIgnoredStations(FileSystem vfs) throws IOException {
    final int[] i = new int[] { 0 };
    final Path root = vfs.getPath("schedules");
    Files.walkFileTree(root, new FileVisitor<Path>() {

        @Override//from  w  ww  .j  a v  a 2s .c  om
        public FileVisitResult preVisitDirectory(Path dir, BasicFileAttributes attrs) throws IOException {
            return !Files.isSameFile(root, dir) ? FileVisitResult.SKIP_SUBTREE : FileVisitResult.CONTINUE;
        }

        @Override
        public FileVisitResult visitFile(Path file, BasicFileAttributes attrs) throws IOException {
            String id = file.getName(file.getNameCount() - 1).toString();
            id = id.substring(0, id.indexOf('.'));
            if (stationList != null && !stationList.contains(id)) {
                if (LOG.isDebugEnabled())
                    LOG.debug(String.format("CacheCleaner: Remove '%s'", id));
                Files.delete(file);
                ++i[0];
            }
            return FileVisitResult.CONTINUE;
        }

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

        @Override
        public FileVisitResult postVisitDirectory(Path dir, IOException exc) throws IOException {
            return FileVisitResult.CONTINUE;
        }

    });
    LOG.info(String.format("Removed %d ignored station(s).", i[0]));
}

From source file:org.tinymediamanager.core.Utils.java

/**
 * Deletes a complete directory recursively, using Java NIO
 * //from  w ww  .  j a v a 2  s .  c om
 * @param dir
 *          directory to delete
 * @throws IOException
 */
public static void deleteDirectoryRecursive(Path dir) throws IOException {
    if (!Files.exists(dir)) {
        return;
    }

    LOGGER.info("Deleting complete directory: " + dir);
    Files.walkFileTree(dir, new FileVisitor<Path>() {

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

        @Override
        public FileVisitResult preVisitDirectory(Path dir, BasicFileAttributes attrs) throws IOException {
            return FileVisitResult.CONTINUE;
        }

        @Override
        public FileVisitResult visitFile(Path file, BasicFileAttributes attrs) throws IOException {
            Files.delete(file);
            return FileVisitResult.CONTINUE;
        }

        @Override
        public FileVisitResult visitFileFailed(Path file, IOException exc) throws IOException {
            LOGGER.warn("Could not delete " + file + "; " + exc.getMessage());
            return FileVisitResult.CONTINUE;
        }

    });
}