org.codice.alliance.transformer.nitf.NitfAttributeConverters.java Source code

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Here is the source code for org.codice.alliance.transformer.nitf.NitfAttributeConverters.java

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/**
 * Copyright (c) Codice Foundation
 *
 * <p>This is free software: you can redistribute it and/or modify it under the terms of the GNU
 * Lesser General Public License as published by the Free Software Foundation, either version 3 of
 * the License, or any later version.
 *
 * <p>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 Lesser General Public License for more details. A copy of the GNU Lesser General Public
 * License is distributed along with this program and can be found at
 * <http://www.gnu.org/licenses/lgpl.html>.
 */
package org.codice.alliance.transformer.nitf;

import java.time.Instant;
import java.time.ZonedDateTime;
import java.util.Date;
import java.util.List;
import javax.annotation.Nullable;
import org.apache.commons.collections4.CollectionUtils;
import org.codice.ddf.internal.country.converter.api.CountryCodeConverter;
import org.codice.imaging.nitf.core.common.DateTime;

/** General NITF utility functions */
public class NitfAttributeConverters {

    private static CountryCodeConverter countryCodeConverter;

    public NitfAttributeConverters(CountryCodeConverter converter) {
        countryCodeConverter = converter;
    }

    @Nullable
    public static Date nitfDate(@Nullable DateTime nitfDateTime) {
        if (nitfDateTime == null || nitfDateTime.getZonedDateTime() == null) {
            return null;
        }

        ZonedDateTime zonedDateTime = nitfDateTime.getZonedDateTime();
        Instant instant = zonedDateTime.toInstant();

        return Date.from(instant);
    }

    /**
     * Gets the alpha3 country code for a fips country code by delegating to the {@link
     * CountryCodeConverter} service.
     *
     * @param fipsCode FIPS 10-4 country code to convert
     * @return a ISO 3166 Alpha3 country code
     * @throws NitfAttributeTransformException when the fipsCode maps to multiple ISO 3166-1 Alpha3
     *     values
     */
    @Nullable
    public static String fipsToStandardCountryCode(@Nullable String fipsCode)
            throws NitfAttributeTransformException {
        List<String> countryCodes = countryCodeConverter.convertFipsToIso3(fipsCode);

        if (countryCodes.size() > 1) {
            throw new NitfAttributeTransformException(
                    String.format("Found %s while converting %s, but expected only 1 conversion value.",
                            countryCodes, fipsCode),
                    fipsCode);
        }

        if (CollectionUtils.isEmpty(countryCodes)) {
            return null;
        }
        return countryCodes.get(0);
    }
}