src/org/sonews/daemon/command/StatCommand.java
author cli
Sat, 10 Sep 2011 18:18:05 +0200
changeset 45 7e24949b87b0
parent 37 74139325d305
child 48 b78e77619152
permissions -rwxr-xr-x
HSQLDB backend support completed, but untested.
     1 /*
     2  *   SONEWS News Server
     3  *   see AUTHORS for the list of contributors
     4  *
     5  *   This program is free software: you can redistribute it and/or modify
     6  *   it under the terms of the GNU General Public License as published by
     7  *   the Free Software Foundation, either version 3 of the License, or
     8  *   (at your option) any later version.
     9  *
    10  *   This program is distributed in the hope that it will be useful,
    11  *   but WITHOUT ANY WARRANTY; without even the implied warranty of
    12  *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    13  *   GNU General Public License for more details.
    14  *
    15  *   You should have received a copy of the GNU General Public License
    16  *   along with this program.  If not, see <http://www.gnu.org/licenses/>.
    17  */
    18 
    19 package org.sonews.daemon.command;
    20 
    21 import java.io.IOException;
    22 import org.sonews.storage.Article;
    23 import org.sonews.daemon.NNTPConnection;
    24 import org.sonews.storage.StorageBackendException;
    25 
    26 /**
    27  * Implementation of the STAT command.
    28  * @author Christian Lins
    29  * @since sonews/0.5.0
    30  */
    31 public class StatCommand implements Command
    32 {
    33 
    34 	@Override
    35 	public String[] getSupportedCommandStrings()
    36 	{
    37 		return new String[] {"STAT"};
    38 	}
    39 
    40 	@Override
    41 	public boolean hasFinished()
    42 	{
    43 		return true;
    44 	}
    45 
    46 	@Override
    47 	public String impliedCapability()
    48 	{
    49 		return null;
    50 	}
    51 
    52 	@Override
    53 	public boolean isStateful()
    54 	{
    55 		return false;
    56 	}
    57 
    58 	// TODO: Method has various exit points => Refactor!
    59 	@Override
    60 	public void processLine(NNTPConnection conn, final String line, byte[] raw)
    61 		throws IOException, StorageBackendException
    62 	{
    63 		final String[] command = line.split(" ");
    64 
    65 		Article article = null;
    66 		if (command.length == 1) {
    67 			article = conn.getCurrentArticle();
    68 			if (article == null) {
    69 				conn.println("420 no current article has been selected");
    70 				return;
    71 			}
    72 		} else if (command[1].matches(NNTPConnection.MESSAGE_ID_PATTERN)) {
    73 			// Message-ID
    74 			article = Article.getByMessageID(command[1]);
    75 			if (article == null) {
    76 				conn.println("430 no such article found");
    77 				return;
    78 			}
    79 		} else {
    80 			// Message Number
    81 			try {
    82 				long aid = Long.parseLong(command[1]);
    83 				article = conn.getCurrentChannel().getArticle(aid);
    84 			} catch (NumberFormatException ex) {
    85 				ex.printStackTrace();
    86 			} catch (StorageBackendException ex) {
    87 				ex.printStackTrace();
    88 			}
    89 			if (article == null) {
    90 				conn.println("423 no such article number in this group");
    91 				return;
    92 			}
    93 			conn.setCurrentArticle(article);
    94 		}
    95 
    96 		conn.println("223 " + conn.getCurrentChannel().getIndexOf(article) + " "
    97 			+ article.getMessageID()
    98 			+ " article retrieved - request text separately");
    99 	}
   100 }