org.jclouds.virtualbox.functions.MacAddressToBSD Maven / Gradle / Ivy

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/*
 * 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.
 */
package org.jclouds.virtualbox.functions;

import static com.google.common.base.Preconditions.checkArgument;

import com.google.common.base.Function;
import com.google.common.base.Joiner;
import com.google.common.base.Splitter;
import com.google.common.collect.Iterables;

public enum MacAddressToBSD implements Function {

   INSTANCE;

   @Override
   public String apply(String macAddress) {
      checkArgument(macAddress.length() == 17);
      return Joiner.on(":").join(
              Iterables.transform(Splitter.on(":").split(macAddress),
                      new Function() {
                         @Override
                         public String apply(String addressPart) {
                            if (addressPart.equals("00"))
                               return "0";
                            if (addressPart.startsWith("0"))
                               return addressPart.substring(1);

                            return addressPart;
                         }
                      }));
   }
}