1 files changed, 46 insertions, 0 deletions
diff --git a/third_party/jarjar/java/com/tonicsystems/jarjar/util/JarTransformer.java b/third_party/jarjar/java/com/tonicsystems/jarjar/util/JarTransformer.java
new file mode 100644
index 0000000000..2b07a88bcc
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+++ b/third_party/jarjar/java/com/tonicsystems/jarjar/util/JarTransformer.java
@@ -0,0 +1,46 @@
+/*
+ * Copyright 2007 Google Inc.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.tonicsystems.jarjar.util;
+
+import java.io.*;
+import org.objectweb.asm.ClassReader;
+import org.objectweb.asm.ClassVisitor;
+import org.objectweb.asm.ClassWriter;
+
+public abstract class JarTransformer implements JarProcessor {
+  public boolean process(EntryStruct struct) throws IOException {
+        if (struct.isClass()) {
+      ClassReader reader;
+      try {
+        reader = new ClassReader(struct.data);
+      } catch (Exception e) {
+        return true; // TODO?
+      }
+      GetNameClassWriter w = new GetNameClassWriter(ClassWriter.COMPUTE_MAXS);
+      reader.accept(transform(w), ClassReader.EXPAND_FRAMES);
+      struct.data = w.toByteArray();
+      struct.name = pathFromName(w.getClassName());
+    }
+    return true;
+  }
+
+  protected abstract ClassVisitor transform(ClassVisitor v);
+
+  private static String pathFromName(String className) {
+    return className.replace('.', '/') + ".class";
+  }
+}