82 lines
2.6 KiB
Java
82 lines
2.6 KiB
Java
/*
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* Minecraft Forge
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* Copyright (c) 2016-2020.
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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.moddiscovery;
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import cpw.mods.modlauncher.api.LamdbaExceptionUtils.Supplier_WithExceptions;
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import net.minecraftforge.fml.loading.StringUtils;
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import java.nio.file.Path;
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import java.util.Arrays;
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import java.util.Optional;
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import java.util.function.BiPredicate;
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import java.util.zip.ZipFile;
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import static cpw.mods.modlauncher.api.LamdbaExceptionUtils.*;
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public enum InvalidModIdentifier {
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OLDFORGE(filePresent("mcmod.info")),
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FABRIC(filePresent("fabric.mod.json")),
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LITELOADER(filePresent("litemod.json")),
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OPTIFINE(filePresent("optifine/Installer.class")),
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INVALIDZIP((f,zf) -> !zf.isPresent());
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private BiPredicate<Path, Optional<ZipFile>> ident;
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InvalidModIdentifier(BiPredicate<Path, Optional<ZipFile>> identifier)
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{
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this.ident = identifier;
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}
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private String getReason()
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{
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return "fml.modloading.brokenfile." + StringUtils.toLowerCase(name());
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}
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public static Optional<String> identifyJarProblem(Path path)
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{
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Optional<ZipFile> zfo = optionalFromException(() -> new ZipFile(path.toFile()));
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Optional<String> result = Arrays.stream(values()).
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filter(i -> i.ident.test(path, zfo)).
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map(InvalidModIdentifier::getReason).
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findAny();
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zfo.ifPresent(rethrowConsumer(ZipFile::close));
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return result;
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}
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private static BiPredicate<Path, Optional<ZipFile>> filePresent(String filename)
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{
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return (f, zfo) -> zfo.map(zf -> zf.getEntry(filename) != null).orElse(false);
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}
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private static <T> Optional<T> optionalFromException(Supplier_WithExceptions<T, ? extends Exception> supp)
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{
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try
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{
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return Optional.of(supp.get());
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}
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catch (Exception e)
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{
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return Optional.empty();
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}
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}
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}
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