1 files changed, 84 insertions, 0 deletions
diff --git a/spark-sponge8/src/main/java/me/lucko/spark/sponge/Sponge8ClassSourceLookup.java b/spark-sponge8/src/main/java/me/lucko/spark/sponge/Sponge8ClassSourceLookup.java
new file mode 100644
index 0000000..fa4ac45
--- /dev/null
+++ b/spark-sponge8/src/main/java/me/lucko/spark/sponge/Sponge8ClassSourceLookup.java
@@ -0,0 +1,84 @@
+/*
+ * This file is part of spark.
+ *
+ *  Copyright (c) lucko (Luck) <luck@lucko.me>
+ *  Copyright (c) contributors
+ *
+ *  This program is free software: you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation, either version 3 of the License, or
+ *  (at your option) any later version.
+ *
+ *  This program is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+package me.lucko.spark.sponge;
+
+import com.google.common.collect.ImmutableMap;
+
+import me.lucko.spark.common.util.ClassSourceLookup;
+
+import org.spongepowered.api.Game;
+import org.spongepowered.plugin.PluginCandidate;
+import org.spongepowered.plugin.PluginContainer;
+import org.spongepowered.plugin.builtin.jvm.JVMPluginContainer;
+import org.spongepowered.plugin.builtin.jvm.locator.JVMPluginResource;
+
+import java.lang.reflect.Field;
+import java.nio.file.Path;
+import java.util.Collection;
+import java.util.Map;
+
+public class Sponge8ClassSourceLookup extends ClassSourceLookup.ByCodeSource {
+    private final Path modsDirectory;
+    private final Map<Path, String> pathToPluginMap;
+
+    public Sponge8ClassSourceLookup(Game game) {
+        this.modsDirectory = game.gameDirectory().resolve("mods").toAbsolutePath().normalize();
+        this.pathToPluginMap = constructPathToPluginIdMap(game.pluginManager().plugins());
+    }
+
+    @Override
+    public String identifyFile(Path path) {
+        String id = this.pathToPluginMap.get(path);
+        if (id != null) {
+            return id;
+        }
+
+        if (!path.startsWith(this.modsDirectory)) {
+            return null;
+        }
+
+        return super.identifyFileName(this.modsDirectory.relativize(path).toString());
+    }
+
+    // pretty nasty, but if it fails it doesn't really matter
+    @SuppressWarnings("unchecked")
+    private static Map<Path, String> constructPathToPluginIdMap(Collection<PluginContainer> plugins) {
+        ImmutableMap.Builder<Path, String> builder = ImmutableMap.builder();
+
+        try {
+            Field candidateField = JVMPluginContainer.class.getDeclaredField("candidate");
+            candidateField.setAccessible(true);
+
+            for (PluginContainer plugin : plugins) {
+                if (plugin instanceof JVMPluginContainer) {
+                    PluginCandidate<JVMPluginResource> candidate = (PluginCandidate<JVMPluginResource>) candidateField.get(plugin);
+                    Path path = candidate.resource().path().toAbsolutePath().normalize();
+                    builder.put(path, plugin.metadata().id());
+                }
+            }
+        } catch (Exception e) {
+            // ignore
+        }
+
+        return builder.build();
+    }
+
+}