1 files changed, 23 insertions, 1 deletions

diff --git a/spark-fabric/src/main/java/me/lucko/spark/fabric/FabricClassSourceLookup.java b/spark-fabric/src/main/java/me/lucko/spark/fabric/FabricClassSourceLookup.java
index fa59079..7030680 100644
--- a/spark-fabric/src/main/java/me/lucko/spark/fabric/FabricClassSourceLookup.java
+++ b/spark-fabric/src/main/java/me/lucko/spark/fabric/FabricClassSourceLookup.java
@@ -20,25 +20,47 @@
 
 package me.lucko.spark.fabric;
 
+import com.google.common.collect.ImmutableMap;
+
 import me.lucko.spark.common.util.ClassSourceLookup;
 
 import net.fabricmc.loader.api.FabricLoader;
+import net.fabricmc.loader.api.ModContainer;
 
 import java.nio.file.Path;
+import java.util.Collection;
+import java.util.Map;
 
 public class FabricClassSourceLookup extends ClassSourceLookup.ByCodeSource {
     private final Path modsDirectory;
+    private final Map<Path, String> pathToModMap;
 
     public FabricClassSourceLookup() {
-        this.modsDirectory = FabricLoader.getInstance().getGameDir().resolve("mods").toAbsolutePath().normalize();
+        FabricLoader loader = FabricLoader.getInstance();
+        this.modsDirectory = loader.getGameDir().resolve("mods").toAbsolutePath().normalize();
+        this.pathToModMap = constructPathToModIdMap(loader.getAllMods());
     }
 
     @Override
     public String identifyFile(Path path) {
+        String id = this.pathToModMap.get(path);
+        if (id != null) {
+            return id;
+        }
+
         if (!path.startsWith(this.modsDirectory)) {
             return null;
         }
 
         return super.identifyFileName(this.modsDirectory.relativize(path).toString());
     }
+
+    private static Map<Path, String> constructPathToModIdMap(Collection<ModContainer> mods) {
+        ImmutableMap.Builder<Path, String> builder = ImmutableMap.builder();
+        for (ModContainer mod : mods) {
+            Path path = mod.getRootPath().toAbsolutePath().normalize();
+            builder.put(path, mod.getMetadata().getId());
+        }
+        return builder.build();
+    }
 }