Example usage for org.apache.commons.vfs2 FileSystemManager createVirtualFileSystem

Introduction

In this page you can find the example usage for org.apache.commons.vfs2 FileSystemManager createVirtualFileSystem.

Prototype

FileObject createVirtualFileSystem(FileObject rootFile) throws FileSystemException;

Source Link

Document

Creates a virtual file system.

Usage

From source file:org.geoserver.backuprestore.utils.BackupUtils.java

/**
 * Extracts the archive file {@code archiveFile} to {@code targetFolder}; both shall previously exist.
 *
 * @param archiveFile//from  w ww .  j a  va  2  s. c o m
 * @param targetFolder
 * @throws IOException
 */
public static void extractTo(Resource archiveFile, Resource targetFolder) throws IOException {
    FileSystemManager manager = VFS.getManager();
    String sourceURI = resolveArchiveURI(archiveFile);

    FileObject source = manager.resolveFile(sourceURI);
    if (manager.canCreateFileSystem(source)) {
        source = manager.createFileSystem(source);
    }
    FileObject target = manager
            .createVirtualFileSystem(manager.resolveFile(targetFolder.dir().getAbsolutePath()));

    FileSelector selector = new AllFileSelector() {
        @Override
        public boolean includeFile(FileSelectInfo fileInfo) {
            LOGGER.fine("Uncompressing " + fileInfo.getFile().getName().getFriendlyURI());
            return true;
        }
    };
    target.copyFrom(source, selector);
    source.close();
    target.close();
    manager.closeFileSystem(source.getFileSystem());
}

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From source file:org.geoserver.backuprestore.utils.BackupUtils.java

/**
 * Compress {@code sourceFolder} to the archive file {@code archiveFile}; both shall previously exist.
 * //  www.  java 2  s . c o  m
 * @param sourceFolder
 * @param archiveFile
 * @throws IOException
 */
public static void compressTo(Resource sourceFolder, Resource archiveFile) throws IOException {
    // See https://commons.apache.org/proper/commons-vfs/filesystems.html
    // for the supported filesystems

    FileSystemManager manager = VFS.getManager();

    FileObject sourceDir = manager
            .createVirtualFileSystem(manager.resolveFile(sourceFolder.dir().getAbsolutePath()));

    try {
        if ("zip".equalsIgnoreCase(FileUtils.getExtension(archiveFile.path()))) {
            // apache VFS does not support ZIP as writable FileSystem

            OutputStream fos = archiveFile.out();

            // Create access to zip.
            ZipOutputStream zos = new ZipOutputStream(fos);

            // add entry/-ies.
            for (FileObject sourceFile : sourceDir.getChildren()) {
                writeEntry(zos, sourceFile, null);
            }

            // Close streams
            zos.flush();
            zos.close();
            fos.close();
        } else {
            // Create access to archive.
            FileObject zipFile = manager.resolveFile(resolveArchiveURI(archiveFile));
            zipFile.createFile();
            ZipOutputStream zos = new ZipOutputStream(zipFile.getContent().getOutputStream());

            // add entry/-ies.
            for (FileObject sourceFile : sourceDir.getChildren()) {
                writeEntry(zos, sourceFile, null);
            }

            // Close streams
            zos.flush();
            zos.close();
            zipFile.close();
            manager.closeFileSystem(zipFile.getFileSystem());
        }
    } finally {
        manager.closeFileSystem(sourceDir.getFileSystem());
    }
}

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