Github user pwendell commented on a diff in the pull request:
https://github.com/apache/spark/pull/1813#discussion_r15978313
--- Diff: project/Relocator.scala ---
@@ -0,0 +1,156 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements. See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You 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.
+ */
+
+import java.io._
+
+import scala.util.matching.Regex
+
+import org.objectweb.asm._
+import org.objectweb.asm.commons._
+import sbtassembly.Plugin._
+
+/**
+ * Relocates classes that match the configuration to a new location. Tries
to match the options
+ * available in the maven-shade-plugin.
+ *
+ * @param prefix Prefix that classes to be relocated must match.
+ * @param shaded New prefix for classes that match.
+ * @param includes Regexes for classes to include inside the matching
package (empty = all).
+ * @param excludes Regexes for classes to exclude from the matching
package (empty = none).
+ */
+class Relocator(prefix: String, shaded: String, includes: Seq[Regex],
excludes: Seq[Regex]) {
--- End diff --
This might be useful as a standalone sbt plug-in, I'm guessing a lot of
other projects would use this - did you think at all about doing that? (of
course that's totally up to you, just had the thought).
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