code: /*******************************************************************************
   * Copyright 2018 572682
   * 
   * 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 us.dot.its.jpo.ode.importer.parser;
  
  import java.io.BufferedInputStream;
  import java.io.IOException;
  import java.io.OutputStream;
  import java.nio.ByteOrder;
  import java.time.ZonedDateTime;
  
  import us.dot.its.jpo.ode.util.CodecUtils;
  import us.dot.its.jpo.ode.util.DateTimeUtils;
  
  public class TimeParser extends LogFileParser {
  
     public static final int UTC_TIME_IN_SEC_LENGTH = 4;
     public static final int MSEC_LENGTH = 2;
  
     protected int utcTimeInSec;
     protected short mSec;
  
     public TimeParser() {
        super();
     }
  
     @Override
     public ParserStatus parseFile(BufferedInputStream bis, String fileName) throws FileParserException {
  
        ParserStatus status = ParserStatus.INIT;
        try {
           // parse utcTimeInSec
           if (getStep() == 0) {
              status = parseStep(bis, UTC_TIME_IN_SEC_LENGTH);
              if (status != ParserStatus.COMPLETE)
                 return status;
              setUtcTimeInSec(CodecUtils.bytesToInt(readBuffer, 0, UTC_TIME_IN_SEC_LENGTH, ByteOrder.LITTLE_ENDIAN));
           }
  
           // parse mSec
           if (getStep() == 1) {
              status = parseStep(bis, MSEC_LENGTH);
              if (status != ParserStatus.COMPLETE)
                 return status;
              setmSec(CodecUtils.bytesToShort(readBuffer, 0, MSEC_LENGTH, ByteOrder.LITTLE_ENDIAN));
           }
  
           resetStep();
           status = ParserStatus.COMPLETE;
  
        } catch (Exception e) {
           throw new FileParserException(String.format("Error parsing %s on step %d", fileName, getStep()), e);
        }
  
        return status;
     }
     
     public long getUtcTimeInSec() {
        return utcTimeInSec;
     }
  
     public LogFileParser setUtcTimeInSec(int utcTimeInSec) {
        this.utcTimeInSec = utcTimeInSec;
        return this;
     }
  
     public short getmSec() {
        return mSec;
     }
  
     public LogFileParser setmSec(short mSec) {
        this.mSec = mSec;
        return this;
     }
  
     public ZonedDateTime getGeneratedAt() {
        return DateTimeUtils.isoDateTime(getUtcTimeInSec() * 1000 + getmSec());
     }
  
    @Override
    public void writeTo(OutputStream os) throws IOException {
      os.write(CodecUtils.intToBytes(utcTimeInSec, ByteOrder.LITTLE_ENDIAN));
      os.write(CodecUtils.shortToBytes(mSec, ByteOrder.LITTLE_ENDIAN));
    }
  
  }
  