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/*
* This file is part of fabric-loom, licensed under the MIT License (MIT).
*
* Copyright (c) 2021 FabricMC
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in all
* copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*/
package net.fabricmc.loom.util.srg;
import java.io.IOException;
import java.nio.file.Files;
import java.nio.file.Path;
import java.util.HashSet;
import java.util.Iterator;
import java.util.Set;
import java.util.function.BiConsumer;
import java.util.stream.Collectors;
import com.google.common.collect.BiMap;
import com.google.common.collect.HashBiMap;
import dev.architectury.tinyremapper.IMappingProvider;
import net.fabricmc.loom.util.FileSystemUtil;
import net.fabricmc.mappingio.tree.MappingTree;
public class InnerClassRemapper {
public static IMappingProvider of(Set<String> fromClassNames, MappingTree mappingsWithSrg, String from, String to) throws IOException {
return sink -> {
remapInnerClass(fromClassNames, mappingsWithSrg, from, to, sink::acceptClass);
};
}
public static Set<String> readClassNames(Path jar) {
Set<String> set = new HashSet<>();
try (FileSystemUtil.Delegate system = FileSystemUtil.getJarFileSystem(jar, false)) {
Iterator<Path> iterator = Files.walk(system.get().getPath("/")).iterator();
while (iterator.hasNext()) {
Path path = iterator.next();
String name = path.toString();
if (name.startsWith("/")) name = name.substring(1);
if (!Files.isDirectory(path) && name.contains("$") && name.endsWith(".class")) {
String className = name.substring(0, name.length() - 6);
set.add(className);
}
}
} catch (IOException e) {
throw new RuntimeException(e);
}
return set;
}
private static void remapInnerClass(Set<String> classNames, MappingTree mappingsWithSrg, String from, String to, BiConsumer<String, String> action) {
BiMap<String, String> availableClasses = HashBiMap.create(mappingsWithSrg.getClasses().stream()
.collect(Collectors.groupingBy(classDef -> classDef.getName(from),
Collectors.<MappingTree.ClassMapping, String>reducing(
null,
classDef -> classDef.getName(to),
(first, last) -> last
))
));
for (String className : classNames) {
if (!availableClasses.containsKey(className)) {
String parentName = className.substring(0, className.indexOf('$'));
String childName = className.substring(className.indexOf('$') + 1);
String remappedParentName = availableClasses.getOrDefault(parentName, parentName);
String remappedName = remappedParentName + "$" + childName;
if (!className.equals(remappedName)) {
if (availableClasses.containsValue(remappedName)) {
// https://github.com/MinecraftForge/MinecraftForge/blob/b027a92dd287d6810a9fdae4d4b1e1432d7dc9cc/patches/minecraft/net/minecraft/Util.java.patch#L8
action.accept(className, remappedName + "_UNBREAK");
} else {
action.accept(className, remappedName);
}
}
}
}
}
}
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