SmoothFacesLoader.java

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/*
 * Gridarta MMORPG map editor for Crossfire, Daimonin and similar games.
 * Copyright (C) 2000-2023 The Gridarta Developers.
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 * 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 General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License along
 * with this program; if not, write to the Free Software Foundation, Inc.,
 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
 */
 
package net.sf.gridarta.model.smoothface;
 
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.io.Reader;
import java.net.URL;
import java.util.regex.Pattern;
import net.sf.gridarta.model.errorview.ErrorView;
import net.sf.gridarta.model.errorview.ErrorViewCategory;
import net.sf.gridarta.model.errorview.ErrorViewCollector;
import net.sf.gridarta.utils.IOUtils;
import org.apache.log4j.Category;
import org.apache.log4j.Logger;
import org.jetbrains.annotations.NotNull;
 
public class SmoothFacesLoader {
 
    private static final Category LOG = Logger.getLogger(SmoothFacesLoader.class);
 
    private SmoothFacesLoader() {
    }
 
    public static void load(@NotNull final URL url, @NotNull final SmoothFaces smoothFaces, @NotNull final ErrorView errorView) {
        final ErrorViewCollector errorViewCollector = new ErrorViewCollector(errorView, url);
        try {
            try (InputStream inputStream = url.openStream()) {
                try (Reader reader = new InputStreamReader(inputStream, IOUtils.MAP_ENCODING)) {
                    try (Reader bufferedReader = new BufferedReader(reader)) {
                        load(url.toString(), bufferedReader, smoothFaces, errorViewCollector);
                    }
                }
            }
        } catch (final IOException ex) {
            errorViewCollector.addWarning(ErrorViewCategory.SMOOTH_FILE_INVALID, ex.getMessage());
        }
    }
 
    private static void load(@NotNull final String readerName, @NotNull final Reader reader, @NotNull final SmoothFaces smoothFaces, @NotNull final ErrorViewCollector errorViewCollector) throws IOException {
        int smoothEntries = 0;
        try (BufferedReader bufferedReader = new BufferedReader(reader)) {
            final Pattern pattern = Pattern.compile(" ");
            for (String line = bufferedReader.readLine(); line != null; line = bufferedReader.readLine()) {
                if (line.trim().isEmpty() || line.startsWith("#")) {
                    continue;
                }
                final String[] elements = pattern.split(line);
                if (elements.length != 2) {
                    errorViewCollector.addWarning(ErrorViewCategory.SMOOTH_FILE_INVALID, "syntax error in line " + line);
                    return;
                }
                final SmoothFace smoothFace = new SmoothFace(elements[0], elements[1]);
                try {
                    smoothFaces.add(smoothFace);
                    smoothEntries++;
                } catch (final DuplicateSmoothFaceException ex) {
                    errorViewCollector.addWarning(ErrorViewCategory.SMOOTH_FILE_INVALID, "inconsistent smooth face '" + ex.getMessage() + "' maps to '" + ex.getNewValue() + "' and '" + ex.getOldValue() + "'");
                }
            }
        }
        if (LOG.isInfoEnabled()) {
            LOG.info("Loaded " + smoothEntries + " smooth rules from '" + readerName + "'.");
        }
    }
 
}