AbstractAnimationObjectsReader.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.io;
 
import java.io.BufferedReader;
import java.io.File;
import java.io.FileInputStream;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.Reader;
import java.util.Map;
import net.sf.gridarta.model.anim.AnimationObjects;
import net.sf.gridarta.model.anim.AnimationParseException;
import net.sf.gridarta.model.anim.DuplicateAnimationException;
import net.sf.gridarta.model.anim.IllegalAnimationException;
import net.sf.gridarta.model.errorview.ErrorViewCategory;
import net.sf.gridarta.model.errorview.ErrorViewCollector;
import net.sf.gridarta.utils.IOUtils;
import org.jetbrains.annotations.NotNull;
import org.jetbrains.annotations.Nullable;
 
public abstract class AbstractAnimationObjectsReader {
 
    protected AbstractAnimationObjectsReader() {
    }
 
    public void loadAnimations(@NotNull final AnimationObjects animationObjects, @NotNull final ErrorViewCollector errorViewCollector, @NotNull final String path, @NotNull final File animFile, @NotNull final String startKey) throws IOException, AnimationParseException {
        try (FileInputStream fileInputStream = new FileInputStream(animFile)) {
            try (Reader inputStreamReader = new InputStreamReader(fileInputStream, IOUtils.MAP_ENCODING)) {
                loadAnimations(animationObjects, errorViewCollector, inputStreamReader, startKey, path, null);
            }
        }
    }
 
    public void loadAnimations(@NotNull final AnimationObjects animationObjects, @NotNull final ErrorViewCollector errorViewCollector, final Reader reader, @NotNull final String startKey, @Nullable final String path, @Nullable final Map<String, String> animations) throws AnimationParseException, IOException {
        if (path == null && animations == null) {
            throw new IllegalArgumentException("neither path nor animations is set");
        }
        if (path != null && animations != null) {
            throw new IllegalArgumentException("both path and animations are set");
        }
        try (BufferedReader in = new BufferedReader(reader)) {
            int lineNumber = 1;
            while (true) {
                final String line2 = in.readLine();
                if (line2 == null) {
                    break;
                }
                final String line = line2.trim();
                if (line.startsWith("#") || line.isEmpty()) {
                    /* ignore comment lines. */
                } else if (line.startsWith(startKey)) {
                    lineNumber += processAnimation(line.substring(startKey.length()), lineNumber, in, startKey, animationObjects, errorViewCollector, path, animations);
                } else {
                    final int lineNumbers = parseLine(line, lineNumber, in, errorViewCollector);
                    if (lineNumbers >= 0) {
                        lineNumber += lineNumbers;
                    } else {
                        throw new AnimationParseException(startKey + "...", line2, lineNumber);
                    }
                }
 
                lineNumber++;
            }
        }
    }
 
    protected abstract int parseLine(@NotNull String line, int startLineNumber, @NotNull BufferedReader in, @NotNull ErrorViewCollector errorViewCollector) throws AnimationParseException, IOException;
 
    private static int processAnimation(@NotNull final String animName, final int startLineNumber, @NotNull final BufferedReader in, @NotNull final String startKey, @NotNull final AnimationObjects animationObjects, @NotNull final ErrorViewCollector errorViewCollector, @Nullable final String path, @Nullable final Map<String, String> animations) throws AnimationParseException, IOException {
        int lineNumber = startLineNumber;
        final StringBuilder animText = new StringBuilder();
        while (true) {
            lineNumber++;
            final String line3 = in.readLine();
            if (line3 == null) {
                throw new AnimationParseException("mina", "<end of file>", lineNumber);
            }
            final String line4 = line3.trim();
            if (line4.startsWith("#") || line4.isEmpty()) {
                /* ignore comment lines. */
            } else if (line4.startsWith(startKey)) {
                throw new AnimationParseException("mina", line4, lineNumber);
            } else if (line4.equals("mina")) {
                processAnimationLine(animationObjects, errorViewCollector, path, animations, animName, animText.toString());
                break;
            } else {
                animText.append(line4).append('\n');
            }
        }
        return lineNumber - startLineNumber;
    }
 
    private static void processAnimationLine(@NotNull final AnimationObjects animationObjects, @NotNull final ErrorViewCollector errorViewCollector, @Nullable final String path, @Nullable final Map<String, String> animations, @NotNull final String animName, @NotNull final String animText) {
        if (path == null && animations == null) {
            throw new IllegalArgumentException("neither path not animations is set");
        }
 
        final String animPath;
        if (path == null) {
            final String tmp = animations.get(animName);
            if (tmp == null) {
                errorViewCollector.addWarning(ErrorViewCategory.ANIMATIONS_ENTRY_INVALID, "no path found for animation: " + animName);
                animPath = "/" + animName;
            } else {
                animPath = tmp;
            }
        } else {
            animPath = path;
        }
        try {
            animationObjects.addAnimationObject(animName, animText, animPath);
        } catch (final DuplicateAnimationException ex) {
            errorViewCollector.addWarning(ErrorViewCategory.ANIMATIONS_ENTRY_INVALID, ex.getMessage());
        } catch (final IllegalAnimationException ex) {
            errorViewCollector.addWarning(ErrorViewCategory.ANIMATIONS_ENTRY_INVALID, "illegal animation: " + ex.getAnimationObject().getPath());
        }
    }
 
}