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package net.brutex.xservices.ws.rs;
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import java.io.File;
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import java.io.FileFilter;
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import java.util.ArrayList;
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import java.util.List;
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import javax.ws.rs.core.GenericEntity;
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import javax.ws.rs.core.HttpHeaders;
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import javax.ws.rs.core.Response;
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import net.brutex.xservices.security.StandardSecurityManager;
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import net.brutex.xservices.security.UserIdentity;
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import net.brutex.xservices.types.FileInfoType;
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import org.apache.jcs.JCS;
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import org.apache.jcs.access.exception.CacheException;
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/**
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* @author Brian Rosenberger, bru(at)brutex.de
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*
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*/
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public class FileInfoImpl implements FileInfo
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{
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public Response getFiles(HttpHeaders h, String dir, boolean withDir, boolean withFiles, int level, String search, int count, int page)
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{
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StandardSecurityManager sec = new StandardSecurityManager();
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UserIdentity id = new UserIdentity();
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if (!sec.canExecute(java.lang.Thread.currentThread().getStackTrace()[1].getMethodName(), id)) {
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return null;
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}
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System.out.println("Listing directory: " + dir);
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if (level <= 0) level = 1;
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if (level > 3) level = 3;
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if ((!withDir) && (!withFiles)) withFiles = true;
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String cachekey = level + "||" + withFiles + "||" + withDir + "||" + search + "||" + dir;
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try {
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JCS jcs = JCS.getInstance("FileCache");
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List list = (List)jcs.get(cachekey);
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if (list == null) {
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list = setDirectory(dir, withDir, withFiles, level, search);
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jcs.put(cachekey, list);
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System.out.println("Stored in Cache: " + list.toString());
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} else {
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System.out.println("Got from Cache: " + list.toString());
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}
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int fromIndex = 0;
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int toIndex = 0;
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fromIndex = (page - 1) * count;
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toIndex = page * count;
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if (toIndex > list.size()) toIndex = list.size();
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if (fromIndex > toIndex) fromIndex = toIndex;
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GenericEntity sublist = new GenericEntity(list.subList(fromIndex, toIndex))
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{
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};
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return Response.ok(sublist).build();
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} catch (CacheException e) {
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Response.serverError().build();
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}
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return null;
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}
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private void setDirectory(List<FileInfoType> list, File dir, boolean withDirectories, boolean withFiles, final int depth, final String search)
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{
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if (depth <= 0) return;
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File[] files = dir.listFiles(new FileFilter()
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{
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public boolean accept(File pathname) {
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if ((pathname.isDirectory()) && (depth > 1)) return true;
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if ((search == null) || (search.equals(""))) return true;
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if (!pathname.getAbsolutePath().contains(search)) return false;
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return true;
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}
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});
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if ((dir.getParentFile() != null) && (withDirectories)) list.add(new FileInfoType(dir.getParentFile()));
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if (files == null) return;
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for (File e : files) {
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if (e.isDirectory()) setDirectory(list, e, withDirectories, withFiles, depth - 1, search);
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if (((withDirectories) && (e.isDirectory())) || (
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(withFiles) && (e.isFile())))
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list.add(new FileInfoType(e));
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}
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}
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private List<FileInfoType> setDirectory(String dir, boolean withDirectories, boolean withFiles, int depth, String search)
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{
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List list = new ArrayList();
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setDirectory(list, new File(dir), withDirectories, withFiles, depth, search);
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return list;
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}
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}
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