From 9917f30518b61183c95451a502689300f12523c5 Mon Sep 17 00:00:00 2001
From: modmuss50 <modmuss50@gmail.com>
Date: Sat, 26 Sep 2020 18:46:35 +0100
Subject: [PATCH] Export rumtime remap classpath to DLI (#277)

* Export rumtime remap classpath for https://github.com/FabricMC/fabric-loader/pull/241

* Fix bad merge
---
 .../loom/providers/LaunchProvider.java        | 33 +++++++++++++++++++
 1 file changed, 33 insertions(+)

diff --git a/src/main/java/net/fabricmc/loom/providers/LaunchProvider.java b/src/main/java/net/fabricmc/loom/providers/LaunchProvider.java
index 2bc52bd..8c001d6 100644
--- a/src/main/java/net/fabricmc/loom/providers/LaunchProvider.java
+++ b/src/main/java/net/fabricmc/loom/providers/LaunchProvider.java
@@ -36,12 +36,14 @@ import java.util.List;
 import java.util.Map;
 import java.util.StringJoiner;
 import java.util.function.Consumer;
+import java.util.stream.Collectors;
 
 import org.apache.commons.io.FileUtils;
 import org.gradle.api.Project;
 
 import net.fabricmc.loom.util.Constants;
 import net.fabricmc.loom.util.DependencyProvider;
+import net.fabricmc.loom.util.RemappedConfigurationEntry;
 
 public class LaunchProvider extends DependencyProvider {
 	public LaunchProvider(Project project) {
@@ -52,6 +54,7 @@ public class LaunchProvider extends DependencyProvider {
 	public void provide(DependencyInfo dependency, Consumer<Runnable> postPopulationScheduler) throws IOException {
 		final LaunchConfig launchConfig = new LaunchConfig()
 				.property("fabric.development", "true")
+				.property("fabric.remapClasspathFile", getRemapClasspathFile().getAbsolutePath())
 				.property("log4j.configurationFile", getLog4jConfigFile().getAbsolutePath())
 
 				.property("client", "java.library.path", getExtension().getNativesDirectory().getAbsolutePath())
@@ -75,12 +78,18 @@ public class LaunchProvider extends DependencyProvider {
 		addDependency(Constants.Dependencies.DEV_LAUNCH_INJECTOR + Constants.Dependencies.Versions.DEV_LAUNCH_INJECTOR, "runtimeOnly");
 		addDependency(Constants.Dependencies.TERMINAL_CONSOLE_APPENDER + Constants.Dependencies.Versions.TERMINAL_CONSOLE_APPENDER, "runtimeOnly");
 		addDependency(Constants.Dependencies.JETBRAINS_ANNOTATIONS + Constants.Dependencies.Versions.JETBRAINS_ANNOTATIONS, "compileOnly");
+
+		postPopulationScheduler.accept(this::writeRemapClassPath);
 	}
 
 	private File getLog4jConfigFile() {
 		return new File(getExtension().getDevLauncherConfig().getParentFile(), "log4j.xml");
 	}
 
+	private File getRemapClasspathFile() {
+		return new File(getExtension().getDevLauncherConfig().getParentFile(), "remapClasspath.txt");
+	}
+
 	private void writeLog4jConfig() {
 		try (InputStream is = LaunchProvider.class.getClassLoader().getResourceAsStream("log4j2.fabric.xml")) {
 			Files.deleteIfExists(getLog4jConfigFile().toPath());
@@ -90,6 +99,30 @@ public class LaunchProvider extends DependencyProvider {
 		}
 	}
 
+	private void writeRemapClassPath() {
+		List<String> inputConfigurations = new ArrayList<>();
+		inputConfigurations.add(Constants.Configurations.MINECRAFT_DEPENDENCIES);
+		inputConfigurations.addAll(Constants.MOD_COMPILE_ENTRIES.stream().map(RemappedConfigurationEntry::getSourceConfiguration).collect(Collectors.toList()));
+
+		List<File> remapClasspath = new ArrayList<>();
+
+		for (String inputConfiguration : inputConfigurations) {
+			remapClasspath.addAll(getProject().getConfigurations().getByName(inputConfiguration).getFiles());
+		}
+
+		remapClasspath.add(getExtension().getMinecraftMappedProvider().getIntermediaryJar());
+
+		String str = remapClasspath.stream()
+				.map(File::getAbsolutePath)
+				.collect(Collectors.joining(File.pathSeparator));
+
+		try {
+			Files.write(getRemapClasspathFile().toPath(), str.getBytes(StandardCharsets.UTF_8));
+		} catch (IOException e) {
+			throw new RuntimeException("Failed to generate remap classpath", e);
+		}
+	}
+
 	@Override
 	public String getTargetConfig() {
 		return Constants.Configurations.MINECRAFT_NAMED;