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      1 /*
      2  * Copyright 2008 the original author or authors.
      3  *
      4  * Licensed under the Apache License, Version 2.0 (the "License");
      5  * you may not use this file except in compliance with the License.
      6  * You may obtain a copy of the License at
      7  *
      8  *      http://www.apache.org/licenses/LICENSE-2.0
      9  *
     10  * Unless required by applicable law or agreed to in writing, software
     11  * distributed under the License is distributed on an "AS IS" BASIS,
     12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
     13  * See the License for the specific language governing permissions and
     14  * limitations under the License.
     15  */
     16 package org.mockftpserver.fake.filesystem;
     17 
     18 import org.slf4j.Logger;
     19 import org.slf4j.LoggerFactory;
     20 import org.mockftpserver.core.util.StringUtil;
     21 
     22 import java.text.DateFormat;
     23 import java.text.SimpleDateFormat;
     24 import java.util.Locale;
     25 
     26 /**
     27  * Unix-specific implementation of the DirectoryListingFormatter interface.
     28  *
     29  * @author Chris Mair
     30  * @version $Revision$ - $Date$
     31  */
     32 public class UnixDirectoryListingFormatter implements DirectoryListingFormatter {
     33 
     34     private static final Logger LOG = LoggerFactory.getLogger(UnixDirectoryListingFormatter.class);
     35 
     36     private static final String DATE_FORMAT = "MMM dd  yyyy";
     37     private static final int SIZE_WIDTH = 15;
     38     private static final int OWNER_WIDTH = 8;
     39     private static final int GROUP_WIDTH = 8;
     40     private static final String NONE = "none";
     41 
     42     private Locale locale = Locale.ENGLISH;
     43 
     44     // "-rw-rw-r--    1 ftp      ftp           254 Feb 23  2007 robots.txt"
     45     // "-rw-r--r--    1 ftp      ftp      30014925 Apr 15 00:19 md5.sums.gz"
     46     // "-rwxr-xr-x   1 henry    users       5778 Dec  1  2005 planaccess.sql"
     47 
     48     /**
     49      * Format the directory listing for a single file/directory entry.
     50      *
     51      * @param fileSystemEntry - the FileSystemEntry for a single file system entry
     52      * @return the formatted directory listing
     53      */
     54     public String format(FileSystemEntry fileSystemEntry) {
     55         DateFormat dateFormat = new SimpleDateFormat(DATE_FORMAT, locale);
     56         String dateStr = dateFormat.format(fileSystemEntry.getLastModified());
     57         String dirOrFile = fileSystemEntry.isDirectory() ? "d" : "-";
     58         Permissions permissions = fileSystemEntry.getPermissions() != null ? fileSystemEntry.getPermissions() : Permissions.DEFAULT;
     59         String permissionsStr = StringUtil.padRight(permissions.asRwxString(), 9);
     60         String linkCountStr = "1";
     61         String ownerStr = StringUtil.padRight(stringOrNone(fileSystemEntry.getOwner()), OWNER_WIDTH);
     62         String groupStr = StringUtil.padRight(stringOrNone(fileSystemEntry.getGroup()), GROUP_WIDTH);
     63         String sizeStr = StringUtil.padLeft(Long.toString(fileSystemEntry.getSize()), SIZE_WIDTH);
     64         String listing = "" + dirOrFile + permissionsStr + "  " + linkCountStr + " " + ownerStr + " " + groupStr + " " + sizeStr + " " + dateStr + " " + fileSystemEntry.getName();
     65         LOG.info("listing=[" + listing + "]");
     66         return listing;
     67     }
     68 
     69     /**
     70      * Set the Locale to be used in formatting the date within file/directory listings
     71      * @param locale - the Locale instance
     72      */
     73     public void setLocale(Locale locale) {
     74         this.locale = locale;
     75     }
     76 
     77     private String stringOrNone(String string) {
     78         return (string == null) ? NONE : string;
     79     }
     80 
     81 }
     82