fabric-loom/src/main/java/net/fabricmc/loom/util/SourceRemapper.java

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/*
* 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.util;
import java.io.File;
import java.io.IOException;
import java.nio.file.Files;
import java.nio.file.Path;
import java.util.ArrayList;
import java.util.List;
import java.util.function.Consumer;
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import org.cadixdev.lorenz.MappingSet;
import org.cadixdev.mercury.Mercury;
import org.cadixdev.mercury.remapper.MercuryRemapper;
import org.gradle.api.Project;
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import org.zeroturnaround.zip.ZipUtil;
import net.fabricmc.loom.LoomGradleExtension;
import net.fabricmc.loom.providers.MappingsProvider;
import net.fabricmc.loom.util.progress.ProgressLogger;
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import net.fabricmc.lorenztiny.TinyMappingsReader;
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import net.fabricmc.mapping.tree.TinyTree;
import net.fabricmc.stitch.util.StitchUtil;
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public class SourceRemapper {
private final Project project;
private final boolean toNamed;
private final List<Consumer<ProgressLogger>> remapTasks = new ArrayList<>();
private Mercury mercury;
public SourceRemapper(Project project, boolean toNamed) {
this.project = project;
this.toNamed = toNamed;
}
public static void remapSources(Project project, File input, File output, boolean named) throws Exception {
SourceRemapper sourceRemapper = new SourceRemapper(project, named);
sourceRemapper.scheduleRemapSources(input, output);
sourceRemapper.remapAll();
}
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public void scheduleRemapSources(File source, File destination) throws Exception {
remapTasks.add((logger) -> {
try {
logger.progress("remapping sources - " + source.getName());
remapSourcesInner(source, destination);
} catch (Exception e) {
throw new RuntimeException("Failed to remap sources for " + source, e);
}
});
}
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public void remapAll() {
if (!remapTasks.isEmpty()) {
project.getLogger().lifecycle(":remapping sources");
}
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ProgressLogger progressLogger = ProgressLogger.getProgressFactory(project, SourceRemapper.class.getName());
progressLogger.start("Remapping dependency sources", "sources");
remapTasks.forEach(consumer -> consumer.accept(progressLogger));
progressLogger.completed();
// TODO: FIXME - WORKAROUND https://github.com/FabricMC/fabric-loom/issues/45
System.gc();
}
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private void remapSourcesInner(File source, File destination) throws Exception {
project.getLogger().info(":remapping source jar");
Mercury mercury = getMercuryInstance();
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if (source.equals(destination)) {
if (source.isDirectory()) {
throw new RuntimeException("Directories must differ!");
}
source = new File(destination.getAbsolutePath().substring(0, destination.getAbsolutePath().lastIndexOf('.')) + "-dev.jar");
try {
com.google.common.io.Files.move(destination, source);
} catch (IOException e) {
throw new RuntimeException("Could not rename " + destination.getName() + "!", e);
}
}
Path srcPath = source.toPath();
boolean isSrcTmp = false;
if (!source.isDirectory()) {
// create tmp directory
isSrcTmp = true;
srcPath = Files.createTempDirectory("fabric-loom-src");
ZipUtil.unpack(source, srcPath.toFile());
}
if (!destination.isDirectory() && destination.exists()) {
if (!destination.delete()) {
throw new RuntimeException("Could not delete " + destination.getName() + "!");
}
}
StitchUtil.FileSystemDelegate dstFs = destination.isDirectory() ? null : StitchUtil.getJarFileSystem(destination, true);
Path dstPath = dstFs != null ? dstFs.get().getPath("/") : destination.toPath();
try {
mercury.rewrite(srcPath, dstPath);
} catch (Exception e) {
project.getLogger().warn("Could not remap " + source.getName() + " fully!", e);
}
copyNonJavaFiles(srcPath, dstPath, project, source);
if (dstFs != null) {
dstFs.close();
}
if (isSrcTmp) {
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Files.walkFileTree(srcPath, new DeletingFileVisitor());
}
}
private Mercury getMercuryInstance() {
if (this.mercury != null) {
return this.mercury;
}
LoomGradleExtension extension = project.getExtensions().getByType(LoomGradleExtension.class);
MappingsProvider mappingsProvider = extension.getMappingsProvider();
MappingSet mappings = extension.getOrCreateSrcMappingCache(toNamed ? 1 : 0, () -> {
try {
TinyTree m = mappingsProvider.getMappings();
project.getLogger().lifecycle(":loading " + (toNamed ? "intermediary -> named" : "named -> intermediary") + " source mappings");
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return new TinyMappingsReader(m, toNamed ? "intermediary" : "named", toNamed ? "named" : "intermediary").read();
} catch (Exception e) {
throw new RuntimeException(e);
}
});
Mercury mercury = extension.getOrCreateSrcMercuryCache(toNamed ? 1 : 0, () -> {
Mercury m = createMercuryWithClassPath(project, toNamed);
for (File file : extension.getUnmappedModCollection()) {
Path path = file.toPath();
if (Files.isRegularFile(path)) {
m.getClassPath().add(path);
}
}
m.getClassPath().add(extension.getMinecraftMappedProvider().getMappedJar().toPath());
m.getClassPath().add(extension.getMinecraftMappedProvider().getIntermediaryJar().toPath());
m.getProcessors().add(MercuryRemapper.create(mappings));
return m;
});
this.mercury = mercury;
return mercury;
}
private static void copyNonJavaFiles(Path from, Path to, Project project, File source) throws IOException {
Files.walk(from).forEach(path -> {
Path targetPath = to.resolve(from.relativize(path).toString());
if (!isJavaFile(path) && !Files.exists(targetPath)) {
try {
Files.copy(path, targetPath);
} catch (IOException e) {
project.getLogger().warn("Could not copy non-java sources '" + source.getName() + "' fully!", e);
}
}
});
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}
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public static Mercury createMercuryWithClassPath(Project project, boolean toNamed) {
Mercury m = new Mercury();
for (File file : project.getConfigurations().getByName(Constants.Configurations.MINECRAFT_DEPENDENCIES).getFiles()) {
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m.getClassPath().add(file.toPath());
}
if (!toNamed) {
for (File file : project.getConfigurations().getByName("compileClasspath").getFiles()) {
m.getClassPath().add(file.toPath());
}
} else {
for (RemappedConfigurationEntry entry : Constants.MOD_COMPILE_ENTRIES) {
for (File inputFile : project.getConfigurations().getByName(entry.getSourceConfiguration()).getFiles()) {
m.getClassPath().add(inputFile.toPath());
}
}
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}
return m;
}
private static boolean isJavaFile(Path path) {
String name = path.getFileName().toString();
// ".java" is not a valid java file
return name.endsWith(".java") && name.length() != 5;
}
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}