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ProGuardCORE is a free library to read, analyze, modify, and write Java class files.

There is a newer version: 9.1.6

/*
 * ProGuardCORE -- library to process Java bytecode.
 *
 * Copyright (c) 2002-2020 Guardsquare NV
 *
 * 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 proguard.io;

import java.io.*;

/**
 * This {@link DataEntryWriter} lets another {@link DataEntryWriter} write the parent data entries.
 *
 * @author Eric Lafortune
 */
public class ParentDataEntryWriter implements DataEntryWriter {
  private DataEntryWriter dataEntryWriter;

  /**
   * Creates a new ParentDataEntryWriter.
   *
   * @param dataEntryWriter the DataEntryWriter to which the writing will be delegated, passing the
   *     data entries' parents.
   */
  public ParentDataEntryWriter(DataEntryWriter dataEntryWriter) {
    this.dataEntryWriter = dataEntryWriter;
  }

  // Implementations for DataEntryWriter.

  @Override
  public boolean createDirectory(DataEntry dataEntry) throws IOException {
    return dataEntryWriter.createDirectory(dataEntry.getParent());
  }

  @Override
  public boolean sameOutputStream(DataEntry dataEntry1, DataEntry dataEntry2) throws IOException {
    return dataEntryWriter.sameOutputStream(dataEntry1.getParent(), dataEntry2.getParent());
  }

  @Override
  public OutputStream createOutputStream(DataEntry dataEntry) throws IOException {
    return dataEntryWriter.createOutputStream(dataEntry.getParent());
  }

  @Override
  public void close() throws IOException {
    if (dataEntryWriter != null) {
      dataEntryWriter.close();
      dataEntryWriter = null;
    }
  }

  @Override
  public void println(PrintWriter pw, String prefix) {
    pw.println(prefix + "ParentDataEntryWriter");
    dataEntryWriter.println(pw, prefix + "  ");
  }
}