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Diffstat (limited to 'src/org/traccar/protocol/TaipProtocolDecoder.java')
| -rw-r--r-- | src/org/traccar/protocol/TaipProtocolDecoder.java | 181 |
1 files changed, 181 insertions, 0 deletions
diff --git a/src/org/traccar/protocol/TaipProtocolDecoder.java b/src/org/traccar/protocol/TaipProtocolDecoder.java new file mode 100644 index 000000000..518efac0d --- /dev/null +++ b/src/org/traccar/protocol/TaipProtocolDecoder.java @@ -0,0 +1,181 @@ +/* + * Copyright 2013 - 2015 Anton Tananaev (anton.tananaev@gmail.com) + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * 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.traccar.protocol; + +import java.util.Calendar; +import java.util.Date; +import java.util.TimeZone; +import java.util.regex.Matcher; +import java.util.regex.Pattern; + +import org.jboss.netty.channel.Channel; +import org.jboss.netty.channel.ChannelHandlerContext; + +import org.traccar.BaseProtocolDecoder; +import org.traccar.Protocol; +import org.traccar.helper.UnitsConverter; +import org.traccar.model.Position; + +public class TaipProtocolDecoder extends BaseProtocolDecoder { + + boolean sendResponse; + + public TaipProtocolDecoder(TaipProtocol protocol, boolean sendResponse) { + super(protocol); + this.sendResponse = sendResponse; + } + + private static final Pattern pattern = Pattern.compile( + "(?:R[EP]V" + // Type + "(?:\\d{2}" + // Event index + "(\\d{4})" + // Week + "(\\d))?" + // Day + "(\\d{5})|" + // Seconds + "RGP" + // Type + "(\\d{2})(\\d{2})(\\d{2})" + // Date + "(\\d{2})(\\d{2})(\\d{2}))" + // Time + "([\\+\\-]\\d{2})(\\d{5})" + // Latitude + "([\\+\\-]\\d{3})(\\d{5})" + // Longitude + "(\\d{3})" + // Speed + "(\\d{3})" + // Course + "(\\d)" + // Fix mode + ".*\r?\n?"); + + private Date getTime(long week, long day, long seconds) { + Calendar time = Calendar.getInstance(TimeZone.getTimeZone("UTC")); + time.clear(); + time.set(Calendar.YEAR, 1980); + time.set(Calendar.MONTH, 0); + time.set(Calendar.DAY_OF_MONTH, 6); + + long millis = time.getTimeInMillis(); + millis += ((week * 7 + day) * 24 * 60 * 60 + seconds) * 1000; + + return new Date(millis); + } + + private Date getTime(long seconds) { + Calendar time = Calendar.getInstance(TimeZone.getTimeZone("UTC")); + time.set(Calendar.HOUR_OF_DAY, 0); + time.set(Calendar.MINUTE, 0); + time.set(Calendar.SECOND, 0); + time.set(Calendar.MILLISECOND, 0); + + long millis = time.getTimeInMillis() + seconds * 1000; + + long diff = new Date().getTime() - millis; + + if (diff > 12 * 60 * 60 * 1000) { + millis += 24 * 60 * 60 * 1000; + } else if (diff < -12 * 60 * 60 * 1000) { + millis -= 24 * 60 * 60 * 1000; + } + + return new Date(millis); + } + + @Override + protected Object decode( + ChannelHandlerContext ctx, Channel channel, Object msg) + throws Exception { + + String sentence = (String) msg; + + // Find message start + int beginIndex = sentence.indexOf('>'); + if (beginIndex != -1) { + sentence = sentence.substring(beginIndex + 1); + } + + // Find device ID + beginIndex = sentence.indexOf(";ID="); + if (beginIndex != -1) { + beginIndex += 4; + int endIndex = sentence.indexOf(';', beginIndex); + if (endIndex == -1) { + endIndex = sentence.length(); + } + + // Find device in database + String id = sentence.substring(beginIndex, endIndex); + if (!identify(id, channel)) { + return null; + } + + // Send response + if (sendResponse && channel != null) { + channel.write(id); + } + } else { + return null; + } + + // Parse message + Matcher parser = pattern.matcher(sentence); + if (!parser.matches()) { + return null; + } + + // Create new position + Position position = new Position(); + position.setProtocol(getProtocolName()); + position.setDeviceId(getDeviceId()); + + Integer index = 1; + + // Time + String week = parser.group(index++); + String day = parser.group(index++); + String seconds = parser.group(index++); + if (seconds != null) { + if (week != null && day != null) { + position.setTime(getTime(Integer.valueOf(week), Integer.valueOf(day), Integer.valueOf(seconds))); + } else { + position.setTime(getTime(Integer.valueOf(seconds))); + } + index += 6; + } else { + Calendar time = Calendar.getInstance(TimeZone.getTimeZone("UTC")); + time.clear(); + time.set(Calendar.DAY_OF_MONTH, Integer.valueOf(parser.group(index++))); + time.set(Calendar.MONTH, Integer.valueOf(parser.group(index++)) - 1); + time.set(Calendar.YEAR, 2000 + Integer.valueOf(parser.group(index++))); + time.set(Calendar.HOUR_OF_DAY, Integer.valueOf(parser.group(index++))); + time.set(Calendar.MINUTE, Integer.valueOf(parser.group(index++))); + time.set(Calendar.SECOND, Integer.valueOf(parser.group(index++))); + position.setTime(time.getTime()); + } + + // Latitude + String latitude = parser.group(index) + '.' + parser.group(index + 1); + index += 2; + position.setLatitude(Double.valueOf(latitude)); + + // Latitude + String longitude = parser.group(index) + '.' + parser.group(index + 1); + index += 2; + position.setLongitude(Double.valueOf(longitude)); + + // Speed and Course + position.setSpeed(UnitsConverter.knotsFromMph(Double.valueOf(parser.group(index++)))); + position.setCourse(Double.valueOf(parser.group(index++))); + + // Validity + position.setValid(Integer.valueOf(parser.group(index++)) != 0); + return position; + } + +} |