Override minVersion for dependencies.

1 files changed, 34 insertions, 0 deletions

diff --git a/src/main/java/net/fabricmc/loom/configuration/mods/ModProcessor.java b/src/main/java/net/fabricmc/loom/configuration/mods/ModProcessor.java
index 14f14e88..0dd84932 100644
--- a/src/main/java/net/fabricmc/loom/configuration/mods/ModProcessor.java
+++ b/src/main/java/net/fabricmc/loom/configuration/mods/ModProcessor.java
@@ -34,22 +34,29 @@ import java.io.StringWriter;
 import java.nio.charset.StandardCharsets;
 import java.nio.file.Path;
 import java.util.ArrayList;
+import java.util.Arrays;
 import java.util.HashMap;
+import java.util.HashSet;
 import java.util.Iterator;
 import java.util.List;
 import java.util.Locale;
 import java.util.Map;
+import java.util.Set;
 import java.util.jar.Attributes;
 import java.util.jar.JarFile;
 import java.util.jar.Manifest;
 import java.util.stream.Collectors;
 import java.util.zip.ZipEntry;
 
+import com.google.gson.Gson;
+import com.google.gson.GsonBuilder;
 import com.google.gson.JsonObject;
+import com.google.gson.JsonParser;
 import org.apache.commons.io.IOUtils;
 import org.gradle.api.Project;
 import org.objectweb.asm.commons.Remapper;
 import org.zeroturnaround.zip.ZipUtil;
+import org.zeroturnaround.zip.transform.ByteArrayZipEntryTransformer;
 import org.zeroturnaround.zip.transform.StringZipEntryTransformer;
 import org.zeroturnaround.zip.transform.ZipEntryTransformerEntry;
 
@@ -213,10 +220,19 @@ public class ModProcessor {
 				AtRemapper.remap(project.getLogger(), info.getRemappedOutput().toPath(), mappings);
 				CoreModClassRemapper.remapJar(info.getRemappedOutput().toPath(), mappings, project.getLogger());
 
+				Set<String> mixinConfigs = new HashSet<>();
+				Set<String> presentMixinConfigs = new HashSet<>();
+
 				if (ZipUtil.containsEntry(info.getRemappedOutput(), "META-INF/MANIFEST.MF")) {
 					ZipUtil.transformEntry(info.getRemappedOutput(), "META-INF/MANIFEST.MF", (in, zipEntry, out) -> {
 						Manifest manifest = new Manifest(in);
 						fixManifest(manifest);
+						String configs = manifest.getMainAttributes().getValue("MixinConfigs");
+
+						if (configs != null) {
+							mixinConfigs.addAll(Arrays.asList(configs.split(",")));
+						}
+
 						out.putNextEntry(new ZipEntry(zipEntry.getName()));
 						manifest.write(out);
 						out.closeEntry();
@@ -229,9 +245,27 @@ public class ModProcessor {
 						if (zipEntry.getName().startsWith("META-INF")) {
 							filesToRemove.add(zipEntry.getName());
 						}
+					} else if (mixinConfigs.contains(zipEntry.getName())) {
+						presentMixinConfigs.add(zipEntry.getName());
 					}
 				});
 				ZipUtil.removeEntries(info.getRemappedOutput(), filesToRemove.toArray(new String[0]));
+				Gson gson = new GsonBuilder().setPrettyPrinting().disableHtmlEscaping().create();
+				ZipUtil.transformEntries(info.getRemappedOutput(), presentMixinConfigs.stream()
+						.map(path -> new ZipEntryTransformerEntry(path, new ByteArrayZipEntryTransformer() {
+							@Override
+							protected byte[] transform(ZipEntry zipEntry, byte[] input) {
+								try (InputStreamReader reader = new InputStreamReader(new ByteArrayInputStream(input))) {
+									JsonObject object = JsonParser.parseReader(reader).getAsJsonObject();
+									object.remove("minVersion");
+									object.addProperty("minVersion", "0.8");
+									return gson.toJson(object).getBytes(StandardCharsets.UTF_8);
+								} catch (IOException exception) {
+									throw new RuntimeException(exception);
+								}
+							}
+						}))
+						.toArray(ZipEntryTransformerEntry[]::new));
 			}
 
 			info.finaliseRemapping();