/*
 * Copyright (C) 2016 The Android Open Source Project
 *
 * 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.android.tools.build.apkzlib.zip;

import com.android.tools.build.apkzlib.zip.utils.CloseableByteSource;

/** Result of compressing data. */
public class CompressionResult {

  /** The compression method used. */
  private final CompressionMethod compressionMethod;

  /** The resulting data. */
  private final CloseableByteSource source;

  /**
   * Size of the compressed source. Kept because {@code source.size()} can throw {@code
   * IOException}.
   */
  private final long mSize;

  /**
   * Creates a new compression result.
   *
   * @param source the data source
   * @param method the compression method
   */
  public CompressionResult(CloseableByteSource source, CompressionMethod method, long size) {
    compressionMethod = method;
    this.source = source;
    mSize = size;
  }

  /**
   * Obtains the compression method.
   *
   * @return the compression method
   */
  public CompressionMethod getCompressionMethod() {
    return compressionMethod;
  }

  /**
   * Obtains the compressed data.
   *
   * @return the data, the resulting array should not be modified
   */
  public CloseableByteSource getSource() {
    return source;
  }

  /**
   * Obtains the size of the compression result.
   *
   * @return the size
   */
  public long getSize() {
    return mSize;
  }
}