/*
 * Copyright (C) 2005 Alfresco, Inc.
 *
 * Licensed under the Mozilla Public License version 1.1 
 * with a permitted attribution clause. You may obtain a
 * copy of the License at
 *
 *   http://www.alfresco.org/legal/license.txt
 *
 * Unless required by applicable law or agreed to in writing,
 * software distributed under the License is distributed on an
 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND,
 * either express or implied. See the License for the specific
 * language governing permissions and limitations under the
 * License.
 */
package org.alfresco.filesys.ftp;

/**
 * FTP Command Types Class
 * 
 * @author GKSpencer
 */
public class FTPCommand
{

    // Command ids

    public final static int User = 0;
    public final static int Pass = 1;
    public final static int Acct = 2;
    public final static int Cwd = 3;
    public final static int Cdup = 4;
    public final static int Smnt = 5;
    public final static int Rein = 6;
    public final static int Quit = 7;
    public final static int Port = 8;
    public final static int Pasv = 9;
    public final static int Type = 10;
    public final static int Stru = 11;
    public final static int Mode = 12;
    public final static int Retr = 13;
    public final static int Stor = 14;
    public final static int Stou = 15;
    public final static int Appe = 16;
    public final static int Allo = 17;
    public final static int Rest = 18;
    public final static int Rnfr = 19;
    public final static int Rnto = 20;
    public final static int Abor = 21;
    public final static int Dele = 22;
    public final static int Rmd = 23;
    public final static int Mkd = 24;
    public final static int Pwd = 25;
    public final static int List = 26;
    public final static int Nlst = 27;
    public final static int Site = 28;
    public final static int Syst = 29;
    public final static int Stat = 30;
    public final static int Help = 31;
    public final static int Noop = 32;
    public final static int Mdtm = 33;
    public final static int Size = 34;
    public final static int Opts = 35;
    public final static int Feat = 36;
    public final static int XPwd = 37;
    public final static int XMkd = 38;
    public final static int XRmd = 39;
    public final static int XCup = 40;
    public final static int XCwd = 41;

    public final static int MaxId = 41;

    public final static int InvalidCmd = -1;

    // Command name strings

    private static final String[] _cmds = { "USER", "PASS", "ACCT", "CWD", "CDUP", "SMNT", "REIN", "QUIT", "PORT",
            "PASV", "TYPE", "STRU", "MODE", "RETR", "STOR", "STOU", "APPE", "ALLO", "REST", "RNFR", "RNTO", "ABOR",
            "DELE", "RMD", "MKD", "PWD", "LIST", "NLST", "SITE", "SYST", "STAT", "HELP", "NOOP", "MDTM", "SIZE",
            "OPTS", "FEAT", "XPWD", "XMKD", "XRMD", "XCUP", "XCWD" };

    /**
     * Convert an FTP command to an id
     * 
     * @param cmd String
     * @return int
     */
    public final static int getCommandId(String cmd)
    {

        // Check if the command is valid

        if (cmd == null)
            return InvalidCmd;

        // Convert to a command id

        for (int i = 0; i <= MaxId; i++)
            if (_cmds[i].equalsIgnoreCase(cmd))
                return i;

        // Command not found

        return InvalidCmd;
    }

    /**
     * Return the FTP command name for the specified id
     * 
     * @param id int
     * @return String
     */
    public final static String getCommandName(int id)
    {
        if (id < 0 || id > MaxId)
            return null;
        return _cmds[id];
    }
}