fabric-loom/src/main/java/net/fabricmc/loom/task/GenerateSourcesTask.java

121 lines
5.1 KiB
Java

/*
* This file is part of fabric-loom, licensed under the MIT License (MIT).
*
* Copyright (c) 2016, 2017, 2018 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.Files;
import java.nio.file.Path;
import java.nio.file.StandardCopyOption;
import java.util.Collection;
import java.util.Locale;
import java.util.stream.Collectors;
import javax.inject.Inject;
import org.gradle.api.tasks.TaskAction;
import net.fabricmc.loom.LoomGradleExtension;
import net.fabricmc.loom.api.decompilers.DecompilationMetadata;
import net.fabricmc.loom.api.decompilers.LoomDecompiler;
import net.fabricmc.loom.configuration.providers.mappings.MappingsProvider;
import net.fabricmc.loom.decompilers.LineNumberRemapper;
import net.fabricmc.loom.util.Constants;
import net.fabricmc.loom.util.gradle.ProgressLogger;
import net.fabricmc.stitch.util.StitchUtil;
public class GenerateSourcesTask extends AbstractLoomTask {
public final LoomDecompiler decompiler;
@Inject
public GenerateSourcesTask(LoomDecompiler decompiler) {
this.decompiler = decompiler;
setGroup("fabric");
getOutputs().upToDateWhen((o) -> false);
}
@TaskAction
public void doTask() throws Throwable {
int threads = Runtime.getRuntime().availableProcessors();
Path javaDocs = getExtension().getMappingsProvider().tinyMappings.toPath();
Collection<Path> libraries = getProject().getConfigurations().getByName(Constants.Configurations.MINECRAFT_DEPENDENCIES).getFiles()
.stream().map(File::toPath).collect(Collectors.toSet());
DecompilationMetadata metadata = new DecompilationMetadata(threads, javaDocs, libraries);
Path compiledJar = getExtension().getMappingsProvider().mappedProvider.getMappedJar().toPath();
Path sourcesDestination = getMappedJarFileWithSuffix("-sources.jar").toPath();
Path linemap = getMappedJarFileWithSuffix("-sources.lmap").toPath();
decompiler.decompile(compiledJar, sourcesDestination, linemap, metadata);
if (Files.exists(linemap)) {
Path linemappedJarDestination = getMappedJarFileWithSuffix("-linemapped.jar").toPath();
remapLineNumbers(compiledJar, linemap, linemappedJarDestination);
// In order for IDEs to recognize the new line mappings, we need to overwrite the existing compiled jar
// with the linemapped one. In the name of not destroying the existing jar, we will copy it to somewhere else.
Path unlinemappedJar = getMappedJarFileWithSuffix("-unlinemapped.jar").toPath();
// The second time genSources is ran, we want to keep the existing unlinemapped jar.
if (!Files.exists(unlinemappedJar)) {
Files.copy(compiledJar, unlinemappedJar);
}
Files.copy(linemappedJarDestination, compiledJar, StandardCopyOption.REPLACE_EXISTING);
Files.delete(linemappedJarDestination);
}
}
private void remapLineNumbers(Path oldCompiledJar, Path linemap, Path linemappedJarDestination) throws IOException {
getProject().getLogger().info(":adjusting line numbers");
LineNumberRemapper remapper = new LineNumberRemapper();
remapper.readMappings(linemap.toFile());
ProgressLogger progressLogger = ProgressLogger.getProgressFactory(getProject(), getClass().getName());
progressLogger.start("Adjusting line numbers", "linemap");
try (StitchUtil.FileSystemDelegate inFs = StitchUtil.getJarFileSystem(oldCompiledJar.toFile(), true);
StitchUtil.FileSystemDelegate outFs = StitchUtil.getJarFileSystem(linemappedJarDestination.toFile(), true)) {
remapper.process(progressLogger, inFs.get().getPath("/"), outFs.get().getPath("/"));
}
progressLogger.completed();
}
private File getMappedJarFileWithSuffix(String suffix) {
LoomGradleExtension extension = getProject().getExtensions().getByType(LoomGradleExtension.class);
MappingsProvider mappingsProvider = extension.getMappingsProvider();
File mappedJar = mappingsProvider.mappedProvider.getMappedJar();
String path = mappedJar.getAbsolutePath();
if (!path.toLowerCase(Locale.ROOT).endsWith(".jar")) {
throw new RuntimeException("Invalid mapped JAR path: " + path);
}
return new File(path.substring(0, path.length() - 4) + suffix);
}
}