64 lines
2.5 KiB
Java
64 lines
2.5 KiB
Java
/*
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* Minecraft Forge
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* Copyright (c) 2016-2019.
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation version 2.1
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* of the License.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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package net.minecraftforge.fml.loading;
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import cpw.mods.modlauncher.api.LamdbaExceptionUtils;
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import cpw.mods.modlauncher.serviceapi.ITransformerDiscoveryService;
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import org.apache.logging.log4j.LogManager;
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import java.io.File;
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import java.io.IOException;
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import java.nio.file.Files;
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import java.nio.file.Path;
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import java.util.ArrayList;
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import java.util.Collections;
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import java.util.List;
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import java.util.zip.ZipFile;
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public class ModDirTransformerDiscoverer implements ITransformerDiscoveryService {
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@Override
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public List<Path> candidates(final Path gameDirectory) {
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final Path modsDir = gameDirectory.resolve(FMLPaths.MODSDIR.relative());
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if (!Files.exists(modsDir)) {
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// Skip if the mods dir doesn't exist yet.
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return Collections.emptyList();
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}
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List<Path> paths = new ArrayList<>();
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try {
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Files.createDirectories(modsDir);
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Files.walk(modsDir, 1).forEach(p -> {
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if (!Files.isRegularFile(p)) return;
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if (!p.toString().endsWith(".jar")) return;
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if (LamdbaExceptionUtils.uncheck(()->Files.size(p)) == 0) return;
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try (ZipFile zf = new ZipFile(new File(p.toUri()))) {
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if (zf.getEntry("META-INF/services/cpw.mods.modlauncher.api.ITransformationService") != null) {
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paths.add(p);
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}
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} catch (IOException ioe) {
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LogManager.getLogger().error("Zip Error when loading jar file {}", p, ioe);
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}
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});
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} catch (IOException | IllegalStateException ioe) {
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LogManager.getLogger().error("Error during early discovery", ioe);
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}
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return paths;
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}
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}
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