001/*
002 * Syncany, www.syncany.org
003 * Copyright (C) 2011-2016 Philipp C. Heckel <philipp.heckel@gmail.com> 
004 *
005 * This program is free software: you can redistribute it and/or modify
006 * it under the terms of the GNU General Public License as published by
007 * the Free Software Foundation, either version 3 of the License, or
008 * (at your option) any later version.
009 *
010 * This program is distributed in the hope that it will be useful,
011 * but WITHOUT ANY WARRANTY; without even the implied warranty of
012 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
013 * GNU General Public License for more details.
014 *
015 * You should have received a copy of the GNU General Public License
016 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
017 */
018package org.syncany.cli;
019
020import static java.util.Arrays.asList;
021
022import java.util.regex.Matcher;
023import java.util.regex.Pattern;
024
025import joptsimple.OptionParser;
026import joptsimple.OptionSet;
027import joptsimple.OptionSpec;
028
029import org.syncany.operations.OperationResult;
030import org.syncany.operations.watch.WatchOperation;
031import org.syncany.operations.watch.WatchOperationOptions;
032
033public class WatchCommand extends Command {
034        public static final Pattern ANNOUNCEMENTS_PATTERN = Pattern.compile("([^:]+):(\\d+)");
035        public static final int ANNOUNCEMENTS_PATTERN_GROUP_HOST = 1;
036        public static final int ANNOUNCEMENTS_PATTERN_GROUP_PORT = 2;
037        
038        @Override
039        public CommandScope getRequiredCommandScope() { 
040                return CommandScope.INITIALIZED_LOCALDIR;
041        }
042        
043        @Override
044        public boolean canExecuteInDaemonScope() {
045                return false;
046        }
047        
048        @Override
049        public int execute(String[] operationArgs) throws Exception {
050                WatchOperationOptions operationOptions = parseOptions(operationArgs);
051                new WatchOperation(config, operationOptions).execute();
052
053                return 0;
054        }
055
056        @Override
057        public WatchOperationOptions parseOptions(String[] operationArgs) throws Exception {
058                WatchOperationOptions operationOptions = new WatchOperationOptions();
059
060                OptionParser parser = new OptionParser();       
061                OptionSpec<Integer> optionInterval = parser.acceptsAll(asList("i", "interval")).withRequiredArg().ofType(Integer.class);
062                OptionSpec<Void> optionNoAnnouncements = parser.acceptsAll(asList("N", "no-announcements"));
063                OptionSpec<String> optionAnnouncements = parser.acceptsAll(asList("a", "announce")).withRequiredArg();
064                OptionSpec<Void> optionNoWatcher = parser.acceptsAll(asList("W", "no-watcher"));
065                OptionSpec<Integer> optionSettleDelay = parser.acceptsAll(asList("s", "delay")).withRequiredArg().ofType(Integer.class);
066                
067                OptionSet options = parser.parse(operationArgs);        
068                
069                // --interval
070                if (options.has(optionInterval)) {
071                        operationOptions.setInterval(options.valueOf(optionInterval)*1000);
072                }
073                
074                // Conflicting options: --no-announcements and --announce=<..>
075                if (options.has(optionNoAnnouncements) && options.has(optionAnnouncements)) {
076                        throw new Exception("Options --no-announcements and --announce in conflict with one another.");
077                }
078                
079                // --no-announcements
080                if (options.has(optionNoAnnouncements)) {
081                        operationOptions.setAnnouncements(false);
082                }
083                
084                // --announce=<host>:<port>
085                if (options.has(optionAnnouncements)) {
086                        operationOptions.setAnnouncements(true);
087                        
088                        String announcementsStr = options.valueOf(optionAnnouncements);
089                        Matcher matcher = ANNOUNCEMENTS_PATTERN.matcher(announcementsStr);
090                        
091                        if (!matcher.matches()) {
092                                throw new Exception("Invalid argument for --announcements, expected pattern: "+ANNOUNCEMENTS_PATTERN.pattern());
093                        }
094                        
095                        String announcementsHost = matcher.group(ANNOUNCEMENTS_PATTERN_GROUP_HOST);
096                        int announcementsPort = Integer.parseInt(matcher.group(ANNOUNCEMENTS_PATTERN_GROUP_PORT));
097                        
098                        operationOptions.setAnnouncementsHost(announcementsHost);
099                        operationOptions.setAnnouncementsPort(announcementsPort);
100                }
101                
102                // --delay=<sec>
103                if (options.has(optionSettleDelay)) {
104                        operationOptions.setSettleDelay(options.valueOf(optionSettleDelay)*1000);
105                }
106                
107                // --no-watcher
108                if (options.has(optionNoWatcher)) {
109                        operationOptions.setWatcher(false);
110                }
111                
112                return operationOptions;
113        }
114
115        @Override
116        public void printResults(OperationResult result) {
117                // Nothing.
118        }       
119}