Java tutorial
/* * This program is free software; you can redistribute it and/or * modify it under the terms of the GNU General Public License * as published by the Free Software Foundation; either version 2 * of the License, or (at your option) any later version. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, * Boston, MA 02110-1301, USA. * * For information about the authors of this project Have a look * at the AUTHORS file in the root of this project. */ package net.sourceforge.fullsync.fs.connection; import java.io.IOException; import java.io.InputStream; import java.io.OutputStream; import java.net.URI; import java.net.URISyntaxException; import java.util.HashMap; import java.util.Map; import org.apache.commons.vfs2.Capability; import org.apache.commons.vfs2.FileContent; import org.apache.commons.vfs2.FileObject; import org.apache.commons.vfs2.FileSystemOptions; import org.apache.commons.vfs2.FileType; import org.apache.commons.vfs2.VFS; import net.sourceforge.fullsync.ConnectionDescription; import net.sourceforge.fullsync.FileSystemException; import net.sourceforge.fullsync.fs.File; import net.sourceforge.fullsync.fs.FileSystemAuthProvider; public class CommonsVfsConnection implements FileSystemConnection { private final boolean canSetLastModifiedFile; private final boolean canSetLastModifiedFolder; private ConnectionDescription desc; private FileObject base; private File root; public CommonsVfsConnection(final ConnectionDescription desc, final FileSystemAuthProvider fsAuthProvider) throws FileSystemException { try { this.desc = desc; FileSystemOptions options = new FileSystemOptions(); if (null != fsAuthProvider) { fsAuthProvider.authSetup(desc, options); } int port = desc.getPort().orElse(Integer.valueOf(1)).intValue(); String host = desc.getHost().orElse(null); URI url = new URI(desc.getScheme(), null, host, port, desc.getPath(), null, null); base = VFS.getManager().resolveFile(url.toString(), options); root = new AbstractFile(this, ".", null, true, base.exists()); //$NON-NLS-1$ canSetLastModifiedFile = base.getFileSystem().hasCapability(Capability.SET_LAST_MODIFIED_FILE); canSetLastModifiedFolder = base.getFileSystem().hasCapability(Capability.SET_LAST_MODIFIED_FOLDER); } catch (org.apache.commons.vfs2.FileSystemException | URISyntaxException e) { throw new FileSystemException(e); } } @Override public final File createChild(final File parent, final String name, final boolean directory) throws IOException { return new AbstractFile(this, name, parent, directory, false); } private File buildNode(final File parent, final FileObject file) throws org.apache.commons.vfs2.FileSystemException { String name = file.getName().getBaseName(); File n = new AbstractFile(this, name, parent, file.getType() == FileType.FOLDER, true); if (file.getType() == FileType.FILE) { FileContent content = file.getContent(); n.setLastModified(content.getLastModifiedTime()); n.setSize(content.getSize()); } return n; } @Override public final Map<String, File> getChildren(final File dir) throws IOException { try { Map<String, File> children = new HashMap<>(); FileObject obj = base.resolveFile(dir.getPath()); if (obj.exists() && (obj.getType() == FileType.FOLDER)) { FileObject[] list = obj.getChildren(); for (FileObject element : list) { children.put(element.getName().getBaseName(), buildNode(dir, element)); } } return children; } catch (org.apache.commons.vfs2.FileSystemException fse) { throw new IOException(fse.getMessage(), fse); } } @Override public final boolean makeDirectory(final File dir) throws IOException { FileObject obj = base.resolveFile(dir.getPath()); obj.createFolder(); return true; } @Override public final boolean writeFileAttributes(final File file) throws IOException { FileObject obj = base.resolveFile(file.getPath()); FileContent content = obj.getContent(); boolean setLastModified; if (FileType.FOLDER == obj.getType()) { setLastModified = canSetLastModifiedFolder; } else { setLastModified = canSetLastModifiedFile; } if (setLastModified) { content.setLastModifiedTime(file.getLastModified()); } return true; } @Override public final InputStream readFile(final File file) throws IOException { FileObject obj = base.resolveFile(file.getPath()); return obj.getContent().getInputStream(); } @Override public final OutputStream writeFile(final File file) throws IOException { FileObject obj = base.resolveFile(file.getPath()); return obj.getContent().getOutputStream(); } @Override public final boolean delete(final File node) throws IOException { FileObject obj = base.resolveFile(node.getPath()); return obj.delete(); } @Override public final File getRoot() { return root; } @Override public final FileObject getBase() { return base; } @Override public void flush() throws IOException { //FIXME: implement? } @Override public final void close() throws Exception { VFS.getManager().closeFileSystem(base.getFileSystem()); } @Override public final boolean isCaseSensitive() { // TODO Auto-generated method stub return false; } @Override public final boolean isAvailable() { // TODO Auto-generated method stub return true; } @Override public ConnectionDescription getConnectionDescription() { return desc; } }