third_party/jarjar/java/com/tonicsystems/jarjar/JarJarMojo.java

/*
 * 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;

import com.tonicsystems.jarjar.util.*;
import java.io.File;
import java.io.IOException;
import java.util.*;
import org.apache.maven.plugin.AbstractMojo;
import org.apache.maven.plugin.MojoExecutionException;

public class JarJarMojo extends AbstractMojo {
  private File fromJar;
  private File toJar;
  private File rulesFile;
  private String rules;
  private boolean verbose;

  public void execute() throws MojoExecutionException {
    if (!((rulesFile == null || !rulesFile.exists()) ^ (rules == null))) {
      throw new MojoExecutionException("Exactly one of rules or rulesFile is required");
    }

    try {
      List<PatternElement> patterns;
      if (rules != null) {
        patterns = RulesFileParser.parse(rules);
      } else {
        patterns = RulesFileParser.parse(rulesFile);
      }
      // TODO: refactor with Main.java
      MainProcessor proc = new MainProcessor(patterns, verbose, true);
      StandaloneJarProcessor.run(fromJar, toJar, proc);
      proc.strip(toJar);
    } catch (IOException e) {
      throw new MojoExecutionException(e.getMessage(), e);
    }
  }
}