gov.gtas.parsers.util.FlightUtils.java Source code

Introduction

Here is the source code for gov.gtas.parsers.util.FlightUtils.java

Source

/*
 * All GTAS code is Copyright 2016, The Department of Homeland Security (DHS), U.S. Customs and Border Protection (CBP).
 * 
 * Please see LICENSE.txt for details.
 */
package gov.gtas.parsers.util;

import java.util.Date;

import org.apache.commons.lang3.StringUtils;

public final class FlightUtils {
    public static final int MAX_FLIGHT_NUM_LENG = 4;
    public static final int MIN_CARRIER_LENG = 2;

    private FlightUtils() {
    }

    /**
     * Separate flight carrier and flight number from single input string.
     * @param s
     * @return
     */
    public static FlightNumber separateCarrierAndFlightNumber(String s) {

        StringBuffer fn = new StringBuffer();
        int j;
        for (j = s.length() - 1; j >= 0; j--) {
            char c = s.charAt(j);
            if (Character.isDigit(c)) {
                fn.append(c);
                if (s.length() - fn.length() == MIN_CARRIER_LENG) {
                    break;
                } else if (fn.length() == MAX_FLIGHT_NUM_LENG) {
                    break;
                }
            } else {
                break;
            }
        }

        String carrier = s.substring(0, s.length() - fn.length());
        return new FlightNumber(carrier, fn.reverse().toString());
    }

    /**
     * rules for setting calculated field 'flightDate'
     */
    public static Date determineFlightDate(Date etd, Date eta, Date transmissionDate) {
        Date d = null;
        if (etd != null) {
            d = etd;
        } else if (eta != null) {
            d = eta;
        } else {
            d = transmissionDate;
        }

        if (d != null) {
            return DateUtils.stripTime(d);
        }

        return null;
    }

    public static String padFlightNumberWithZeroes(String fn) {
        if (StringUtils.isBlank(fn)) {
            return null;
        }
        StringBuffer buff = new StringBuffer();
        for (int j = 0; j < MAX_FLIGHT_NUM_LENG - fn.length(); j++) {
            buff.append("0");
        }
        buff.append(fn);
        return buff.toString();
    }

}