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A Java library for transforming Google Transit Feed Spec feeds
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/**
 * Copyright (C) 2018 Cambridge Systematics, Inc.
 *
 * 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.onebusaway.gtfs_transformer.impl;

import org.onebusaway.gtfs.model.Stop;
import org.onebusaway.gtfs.services.GtfsMutableRelationalDao;
import org.onebusaway.gtfs_transformer.services.GtfsTransformStrategy;
import org.onebusaway.gtfs_transformer.services.TransformContext;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

import java.io.BufferedReader;
import java.io.FileNotFoundException;
import java.io.FileReader;
import java.io.IOException;
import java.util.LinkedHashMap;
import java.util.Map;
import java.util.regex.PatternSyntaxException;

/**
 * Clean up the stop names based on input file considerations
 */
public class MergeStopNamesFromReferenceStrategy implements GtfsTransformStrategy {

    private final Logger _log = LoggerFactory.getLogger(MergeStopNamesFromReferenceStrategy.class);
    @Override
    public String getName() {
        return this.getClass().getSimpleName();
    }

    @Override
    public void run(TransformContext context, GtfsMutableRelationalDao dao) {
        Map map = new InputLibrary().readOrderedMap((String)context.getParameter(("stopMappingFile")));

        Map regexMap = new InputLibrary().readOrderedMap((String)context.getParameter(("regexFile")));

        for (Stop stop : dao.getAllStops()) {
            String upperCaseName = stop.getName();
            String beautifiedName = "";
            if (upperCaseName == null) continue;
            for (String s : upperCaseName.split(" ")) {
                beautifiedName += toProperCase(s) + " ";
            }
            beautifiedName = beautifiedName.substring(0, beautifiedName.length()-1);

            for (String regex : regexMap.keySet()) {
                try {
                    beautifiedName = beautifiedName.replaceAll(regex, regexMap.get(regex));
                } catch (PatternSyntaxException pse) {
                    _log.error(" invalid regex combination |{}|=|{}|", regex, regexMap.get(regex), pse);
                }
            }

            if (map.containsKey(beautifiedName)) {
                _log.trace("swapped |{}| for |{}|", beautifiedName, map.get(beautifiedName));
                beautifiedName = map.get(beautifiedName);
            }
            stop.setName(beautifiedName);
        }

    }

    private String toProperCase(String s) {
        if (s == null || s.length() < 2) return s;
        return s.substring(0, 1).toUpperCase() +
                s.substring(1).toLowerCase();
    }

}