1 files changed, 44 insertions, 0 deletions
diff --git a/src/main/java/com/replaymod/gradle/remap/legacy/LegacyMappingsReader.java b/src/main/java/com/replaymod/gradle/remap/legacy/LegacyMappingsReader.java
new file mode 100644
index 0000000..502f7ba
--- /dev/null
+++ b/src/main/java/com/replaymod/gradle/remap/legacy/LegacyMappingsReader.java
@@ -0,0 +1,44 @@
+package com.replaymod.gradle.remap.legacy;
+
+import org.cadixdev.lorenz.MappingSet;
+import org.cadixdev.lorenz.io.MappingsReader;
+import org.cadixdev.lorenz.model.ClassMapping;
+
+import java.util.Map;
+
+public class LegacyMappingsReader extends MappingsReader {
+    private final Map<String, LegacyMapping> map;
+
+    public LegacyMappingsReader(Map<String, LegacyMapping> map) {
+        this.map = map;
+    }
+
+    @Override
+    public MappingSet read() {
+        return read(MappingSet.create(new LegacyMappingSetModelFactory()));
+    }
+
+    @Override
+    public MappingSet read(MappingSet mappings) {
+        if (!(mappings.getModelFactory() instanceof LegacyMappingSetModelFactory)) {
+            throw new IllegalArgumentException("legacy mappings must use legacy model factory, use read() instead");
+        }
+        for (LegacyMapping legacyMapping : map.values()) {
+            ClassMapping classMapping = mappings.getOrCreateClassMapping(legacyMapping.oldName)
+                    .setDeobfuscatedName(legacyMapping.newName);
+            for (Map.Entry<String, String> entry : legacyMapping.fields.entrySet()) {
+                classMapping.getOrCreateFieldMapping(entry.getKey())
+                        .setDeobfuscatedName(entry.getValue());
+            }
+            for (Map.Entry<String, String> entry : legacyMapping.methods.entrySet()) {
+                classMapping.getOrCreateMethodMapping(entry.getKey(), "()V")
+                        .setDeobfuscatedName(entry.getValue());
+            }
+        }
+        return mappings;
+    }
+
+    @Override
+    public void close() {
+    }
+}