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/*
* This file is part of fabric-loom, licensed under the MIT License (MIT).
*
* Copyright (c) 2019-2021 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.task;
import java.io.File;
import java.io.IOException;
import java.nio.file.FileSystem;
import java.nio.file.FileSystems;
import java.nio.file.Files;
import java.nio.file.Path;
import java.util.Set;
import com.google.common.collect.ImmutableMap;
import com.google.common.collect.Iterables;
import org.cadixdev.lorenz.MappingSet;
import org.cadixdev.mercury.Mercury;
import org.cadixdev.mercury.remapper.MercuryRemapper;
import org.gradle.api.GradleException;
import org.gradle.api.IllegalDependencyNotation;
import org.gradle.api.JavaVersion;
import org.gradle.api.Project;
import org.gradle.api.artifacts.Dependency;
import org.gradle.api.plugins.JavaPluginConvention;
import org.gradle.api.tasks.TaskAction;
import org.gradle.api.tasks.options.Option;
import net.fabricmc.loom.LoomGradleExtension;
import net.fabricmc.loom.api.mappings.layered.MappingsNamespace;
import net.fabricmc.loom.api.mappings.layered.spec.LayeredMappingSpecBuilder;
import net.fabricmc.loom.configuration.providers.mappings.LayeredMappingsDependency;
import net.fabricmc.loom.configuration.providers.mappings.MappingsProviderImpl;
import net.fabricmc.loom.configuration.providers.minecraft.MinecraftMappedProvider;
import net.fabricmc.loom.util.SourceRemapper;
import net.fabricmc.lorenztiny.TinyMappingsJoiner;
import net.fabricmc.mappingio.MappingReader;
import net.fabricmc.mappingio.tree.MemoryMappingTree;
public class MigrateMappingsTask extends AbstractLoomTask {
private Path inputDir;
private Path outputDir;
private String mappings;
public MigrateMappingsTask() {
inputDir = getProject().file("src/main/java").toPath();
outputDir = getProject().file("remappedSrc").toPath();
}
@Option(option = "input", description = "Java source file directory")
public void setInputDir(String inputDir) {
this.inputDir = getProject().file(inputDir).toPath();
}
@Option(option = "output", description = "Remapped source output directory")
public void setOutputDir(String outputDir) {
this.outputDir = getProject().file(outputDir).toPath();
}
@Option(option = "mappings", description = "Target mappings")
public void setMappings(String mappings) {
this.mappings = mappings;
}
@TaskAction
public void doTask() throws Throwable {
Project project = getProject();
LoomGradleExtension extension = getExtension();
project.getLogger().info(":loading mappings");
if (!Files.exists(inputDir) || !Files.isDirectory(inputDir)) {
throw new IllegalArgumentException("Could not find input directory: " + inputDir.toAbsolutePath());
}
Files.createDirectories(outputDir);
File mappings = loadMappings();
MappingsProviderImpl mappingsProvider = extension.getMappingsProvider();
try {
MemoryMappingTree currentMappings = mappingsProvider.getMappings();
MemoryMappingTree targetMappings = getMappings(mappings);
migrateMappings(project, extension.getMinecraftMappedProvider(), inputDir, outputDir, currentMappings, targetMappings);
project.getLogger().lifecycle(":remapped project written to " + outputDir.toAbsolutePath());
} catch (IOException e) {
throw new IllegalArgumentException("Error while loading mappings", e);
}
}
private File loadMappings() {
Project project = getProject();
if (mappings == null || mappings.isEmpty()) {
throw new IllegalArgumentException("No mappings were specified. Use --mappings=\"\" to specify target mappings");
}
Set<File> files;
try {
if (mappings.startsWith("net.minecraft:mappings:") || mappings.startsWith("net.mojang.minecraft:mappings:")) {
if (!mappings.endsWith(":" + LoomGradleExtension.get(project).getMinecraftProvider().minecraftVersion())) {
throw new UnsupportedOperationException("Migrating Mojang mappings is currently only supported for the specified minecraft version");
}
LayeredMappingsDependency dep = (LayeredMappingsDependency) getExtension().layered(LayeredMappingSpecBuilder::officialMojangMappings);
files = dep.resolve();
} else {
Dependency dependency = project.getDependencies().create(mappings);
files = project.getConfigurations().detachedConfiguration(dependency).resolve();
}
} catch (IllegalDependencyNotation ignored) {
project.getLogger().info("Could not locate mappings, presuming V2 Yarn");
try {
files = project.getConfigurations().detachedConfiguration(project.getDependencies().module(ImmutableMap.of("group", "net.fabricmc", "name", "yarn", "version", mappings, "classifier", "v2"))).resolve();
} catch (GradleException ignored2) {
project.getLogger().info("Could not locate mappings, presuming V1 Yarn");
files = project.getConfigurations().detachedConfiguration(project.getDependencies().module(ImmutableMap.of("group", "net.fabricmc", "name", "yarn", "version", mappings))).resolve();
}
}
if (files.isEmpty()) {
throw new IllegalArgumentException("Mappings could not be found");
}
return Iterables.getOnlyElement(files);
}
private static MemoryMappingTree getMappings(File mappings) throws IOException {
MemoryMappingTree mappingTree = new MemoryMappingTree();
try (FileSystem fileSystem = FileSystems.newFileSystem(mappings.toPath(), (ClassLoader) null)) {
MappingReader.read(fileSystem.getPath("mappings/mappings.tiny"), mappingTree);
}
return mappingTree;
}
private static void migrateMappings(Project project, MinecraftMappedProvider minecraftMappedProvider,
Path inputDir, Path outputDir, MemoryMappingTree currentMappings, MemoryMappingTree targetMappings
) throws IOException {
project.getLogger().info(":joining mappings");
MappingSet mappingSet = new TinyMappingsJoiner(
currentMappings, MappingsNamespace.NAMED.toString(),
targetMappings, MappingsNamespace.NAMED.toString(),
MappingsNamespace.INTERMEDIARY.toString()
).read();
project.getLogger().lifecycle(":remapping");
Mercury mercury = SourceRemapper.createMercuryWithClassPath(project, false);
final JavaPluginConvention convention = project.getConvention().findPlugin(JavaPluginConvention.class);
final JavaVersion javaVersion = convention != null
?
convention.getSourceCompatibility()
:
JavaVersion.current();
mercury.setSourceCompatibility(javaVersion.toString());
mercury.getClassPath().add(minecraftMappedProvider.getMappedJar().toPath());
mercury.getClassPath().add(minecraftMappedProvider.getIntermediaryJar().toPath());
mercury.getProcessors().add(MercuryRemapper.create(mappingSet));
try {
mercury.rewrite(inputDir, outputDir);
} catch (Exception e) {
project.getLogger().warn("Could not remap fully!", e);
}
project.getLogger().info(":cleaning file descriptors");
System.gc();
}
}
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