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1   /*
2    * Licensed to the Apache Software Foundation (ASF) under one
3    * or more contributor license agreements.  See the NOTICE file
4    * distributed with this work for additional information
5    * regarding copyright ownership.  The ASF licenses this file
6    * to you under the Apache License, Version 2.0 (the
7    * "License"); you may not use this file except in compliance
8    * with the License.  You may obtain a copy of the License at
9    *
10   *   https://www.apache.org/licenses/LICENSE-2.0
11   *
12   * Unless required by applicable law or agreed to in writing,
13   * software distributed under the License is distributed on an
14   * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
15   * KIND, either express or implied.  See the License for the
16   * specific language governing permissions and limitations
17   * under the License.
18   */
19  package org.apache.commons.compress.archivers.sevenz;
20  
21  /**
22   * Map between folders, files and streams.
23   */
24  final class StreamMap {
25  
26      /**
27       * The first Archive.packStream index of each folder.
28       */
29      final int[] folderFirstPackStreamIndex;
30  
31      /**
32       * Offset to beginning of this pack stream's data, relative to the beginning of the first pack stream.
33       */
34      final long[] packStreamOffsets;
35  
36      /**
37       * Index of first file for each folder.
38       */
39      final int[] folderFirstFileIndex;
40  
41      /**
42       * Index of folder for each file.
43       */
44      final int[] fileFolderIndex;
45  
46      StreamMap(final int[] folderFirstPackStreamIndex, final long[] packStreamOffsets, final int[] folderFirstFileIndex, final int[] fileFolderIndex) {
47          this.folderFirstPackStreamIndex = folderFirstPackStreamIndex;
48          this.packStreamOffsets = packStreamOffsets;
49          this.folderFirstFileIndex = folderFirstFileIndex;
50          this.fileFolderIndex = fileFolderIndex;
51      }
52  
53      @Override
54      public String toString() {
55          return "StreamMap with indices of " + folderFirstPackStreamIndex.length + " folders, offsets of " + packStreamOffsets.length + " packed streams,"
56                  + " first files of " + folderFirstFileIndex.length + " folders and folder indices for " + fileFolderIndex.length + " files";
57      }
58  }