Package org.syncany.cli

Source Code of org.syncany.cli.WatchCommand

/*
* Syncany, www.syncany.org
* Copyright (C) 2011-2014 Philipp C. Heckel <philipp.heckel@gmail.com>
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program.  If not, see <http://www.gnu.org/licenses/>.
*/
package org.syncany.cli;

import static java.util.Arrays.asList;

import java.util.regex.Matcher;
import java.util.regex.Pattern;

import joptsimple.OptionParser;
import joptsimple.OptionSet;
import joptsimple.OptionSpec;

import org.syncany.operations.OperationResult;
import org.syncany.operations.watch.WatchOperationOptions;

public class WatchCommand extends Command {
  public static final Pattern ANNOUNCEMENTS_PATTERN = Pattern.compile("([^:]+):(\\d+)");
  public static final int ANNOUNCEMENTS_PATTERN_GROUP_HOST = 1;
  public static final int ANNOUNCEMENTS_PATTERN_GROUP_PORT = 2;
 
  @Override
  public CommandScope getRequiredCommandScope() { 
    return CommandScope.INITIALIZED_LOCALDIR;
  }
 
  @Override
  public boolean canExecuteInDaemonScope() {
    return false;
  }
 
  @Override
  public int execute(String[] operationArgs) throws Exception {
    WatchOperationOptions operationOptions = parseOptions(operationArgs);
    client.watch(operationOptions);

    return 0;
  }

  @Override
  public WatchOperationOptions parseOptions(String[] operationArgs) throws Exception {
    WatchOperationOptions operationOptions = new WatchOperationOptions();

    OptionParser parser = new OptionParser()
    OptionSpec<Integer> optionInterval = parser.acceptsAll(asList("i", "interval")).withRequiredArg().ofType(Integer.class);
    OptionSpec<Void> optionNoAnnouncements = parser.acceptsAll(asList("N", "no-announcements"));
    OptionSpec<String> optionAnnouncements = parser.acceptsAll(asList("a", "announce")).withRequiredArg();
    OptionSpec<Void> optionNoWatcher = parser.acceptsAll(asList("W", "no-watcher"));
    OptionSpec<Integer> optionSettleDelay = parser.acceptsAll(asList("s", "delay")).withRequiredArg().ofType(Integer.class);
   
    OptionSet options = parser.parse(operationArgs)
   
    // --interval
    if (options.has(optionInterval)) {
      operationOptions.setInterval(options.valueOf(optionInterval)*1000);
    }
   
    // Conflicting options: --no-announcements and --announce=<..>
    if (options.has(optionNoAnnouncements) && options.has(optionAnnouncements)) {
      throw new Exception("Options --no-announcements and --announce in conflict with one another.");
    }
   
    // --no-announcements
    if (options.has(optionNoAnnouncements)) {
      operationOptions.setAnnouncements(false);
    }
   
    // --announce=<host>:<port>
    if (options.has(optionAnnouncements)) {
      operationOptions.setAnnouncements(true);
     
      String announcementsStr = options.valueOf(optionAnnouncements);
      Matcher matcher = ANNOUNCEMENTS_PATTERN.matcher(announcementsStr);
     
      if (!matcher.matches()) {
        throw new Exception("Invalid argument for --announcements, expected pattern: "+ANNOUNCEMENTS_PATTERN.pattern());
      }
     
      String announcementsHost = matcher.group(ANNOUNCEMENTS_PATTERN_GROUP_HOST);
      int announcementsPort = Integer.parseInt(matcher.group(ANNOUNCEMENTS_PATTERN_GROUP_PORT));
     
      operationOptions.setAnnouncementsHost(announcementsHost);
      operationOptions.setAnnouncementsPort(announcementsPort);
    }
   
    // --delay=<sec>
    if (options.has(optionSettleDelay)) {
      operationOptions.setSettleDelay(options.valueOf(optionSettleDelay)*1000);
    }
   
    // --no-watcher
    if (options.has(optionNoWatcher)) {
      operationOptions.setWatcher(false);
    }
   
    return operationOptions;
  }

  @Override
  public void printResults(OperationResult result) {
    // Nothing.
 
}
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