com.notifier.desktop.notification.parsing.impl.TextNotificationParser.java Source code

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Here is the source code for com.notifier.desktop.notification.parsing.impl.TextNotificationParser.java

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/*
 * Android Notifier Desktop is a multiplatform remote notification client for Android devices.
 *
 * Copyright (C) 2010  Leandro Aparecido
 *
 * 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 version 3 of the License.
 *
 * 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 com.notifier.desktop.notification.parsing.impl;

import java.math.*;
import java.nio.charset.*;
import java.util.*;

import org.slf4j.*;

import com.google.common.base.*;
import com.google.common.collect.*;
import com.google.inject.*;
import com.notifier.desktop.*;
import com.notifier.desktop.notification.*;
import com.notifier.desktop.notification.parsing.*;

public class TextNotificationParser extends EncryptedNotificationParser {

    public static final Charset CHARSET = Charsets.UTF_8;
    public static final char FIELD_SEPARATOR = '/';
    public static final int FIELD_COUNT = 6;
    public static final String SUPPORTED_VERSION = "v2";

    private static final Logger logger = LoggerFactory.getLogger(TextNotificationParser.class);

    @Inject
    public TextNotificationParser(Provider<ApplicationPreferences> preferencesProvider) {
        super(preferencesProvider.get());
    }

    @Override
    public Notification parse(byte[] msg) throws ParseException {
        byte[] msgToUse = decryptIfNecessary(msg);
        if (msgToUse == null) {
            return null;
        }

        String s = new String(msgToUse, CHARSET);
        Iterable<String> splitted = Splitter.on(FIELD_SEPARATOR).split(s);
        if (Iterables.size(splitted) < FIELD_COUNT) {
            logger.debug("Got notification but it has less fields than expected, maybe it's encrypted, ignoring");
            return null;
        }

        Iterator<String> iterator = splitted.iterator();
        String version = iterator.next();
        if (!SUPPORTED_VERSION.equals(version)) {
            throw new ParseException("Protocol version [" + version + "] is not supported");
        }

        String deviceId = iterator.next();
        long notificationId = new BigInteger(iterator.next(), 16).longValue();
        Notification.Type type = Notification.Type.valueOf(iterator.next());
        String data = iterator.next();
        StringBuilder contents = new StringBuilder();
        while (iterator.hasNext()) {
            contents.append(iterator.next());
            if (iterator.hasNext()) {
                contents.append(FIELD_SEPARATOR);
            }
        }

        return new Notification(deviceId, notificationId, type, data, contents.substring(0, contents.length() - 1));
    }

}