Subversion Repositories mkgmap

package uk.me.parabola.mkgmap.osmstyle.function;

import uk.me.parabola.log.Logger;
import uk.me.parabola.mkgmap.build.LocatorConfig;
import uk.me.parabola.mkgmap.reader.osm.Element;
import uk.me.parabola.mkgmap.reader.osm.TagDict;

/**
 * Returns the drive-on-left information for an element based on the information
 * stored in tag mkgmap:country and the LocatorConfig.xml. Returns "true" if
 * mkgmap:country is set and contains an iso code that has the driveOnLeft attribute in the LocatorConfig.xml.
 */
public class IsDriveOnLeftFunction extends CachedFunction {
        private static final Logger log = Logger.getLogger(IsDriveOnLeftFunction.class);
        private static final short TKM_ADM_LVL2 = TagDict.getInstance().xlate("mkgmap:admin_level2");
        private static final short TKM_COUNTRY = TagDict.getInstance().xlate("mkgmap:country");

        public IsDriveOnLeftFunction() {
                super(null);
        }

        protected String calcImpl(Element el) {
                String iso = el.getTag(TKM_ADM_LVL2);
                if (iso == null)
                        iso = el.getTag(TKM_COUNTRY);
                if (iso == null && log.isInfoEnabled()) {
                        log.info(getName(), el.getBasicLogInformation(), "Neither mkgmap:admin_level2 nor mkgmap:country is set, assuming this element is not in a drive-on-left country");
                }
                return Boolean.toString(LocatorConfig.get().getDriveOnLeftFlag(iso));
        }

        @Override
        public String getName() {
                return "is_drive_on_left";
        }
       
        @Override
        public boolean supportsNode() {
                return true;
        }
       
        @Override
        public boolean supportsWay() {
                return true;
        }

}