code: /**
   * This file is part of Eclipse Steady.
   *
   * 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.
   *
   * SPDX-License-Identifier: Apache-2.0
   * SPDX-FileCopyrightText: Copyright (c) 2018-2020 SAP SE or an SAP affiliate company and Eclipse Steady contributors
   */
  package org.eclipse.steady.java;
  
  import java.io.InputStream;
  import java.util.jar.JarEntry;
  
  /*
   * Used in conjunction with a {@link JarWriter}. Instances of JarEntryWriter
   * can be registered at a {@link JarWriter} and will be called in case
   * the {@link JarWriter} comes across an entry matching the given regular expression.
   */
  /**
   * <p>JarEntryWriter interface.</p>
   */
  public interface JarEntryWriter {
  
    /**
     * Carries the {@link InputStream} as well as the size and CRC-32 checksum of
     * rewritten JAR entries. The latter are required to write non-compressed JAR
     * entries in {@link JarWriter}).
     */
    public final class RewrittenJarEntry {
      final InputStream is;
      final long size;
      final long crc32;
  
      public RewrittenJarEntry(InputStream _is, long _size, long _crc32) {
        this.is = _is;
        this.size = _size;
        this.crc32 = _crc32;
      }
    }
  
    /**
     * Callback used for rewriting particular JAR entries. Return null to rewrite the original JAR entry.
     *
     * @param _entry a {@link java.util.jar.JarEntry} object.
     * @param _regex a {@link java.lang.String} object.
     * @return a {@link java.io.InputStream} object.
     */
    public RewrittenJarEntry getInputStream(String _regex, JarEntry _entry);
  }
  