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1   /*
2    *  Licensed to the Apache Software Foundation (ASF) under one or more
3    *  contributor license agreements.  See the NOTICE file distributed with
4    *  this work for additional information regarding copyright ownership.
5    *  The ASF licenses this file to You under the Apache License, Version 2.0
6    *  (the "License"); you may not use this file except in compliance with
7    *  the License.  You may obtain a copy of the License at
8    *
9    *      http://www.apache.org/licenses/LICENSE-2.0
10   *
11   *  Unless required by applicable law or agreed to in writing, software
12   *  distributed under the License is distributed on an "AS IS" BASIS,
13   *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14   *  See the License for the specific language governing permissions and
15   *  limitations under the License.
16   */
17  package org.apache.commons.compress.archivers.sevenz;
18  
19  import java.util.BitSet;
20  
21  final class Archive {
22  
23      private static String lengthOf(final long[] a) {
24          return a == null ? "(null)" : Integer.toString(a.length);
25      }
26  
27      private static String lengthOf(final Object[] a) {
28          return a == null ? "(null)" : Integer.toString(a.length);
29      }
30  
31      /** Offset from beginning of file + SIGNATURE_HEADER_SIZE to packed streams. */
32      long packPos;
33  
34      /** Size of each packed stream. */
35      long[] packSizes = {};
36  
37      /** Whether each particular packed streams has a CRC. */
38      BitSet packCrcsDefined;
39  
40      /** CRCs for each packed stream, valid only if that packed stream has one. */
41      long[] packCrcs;
42  
43      /** Properties of solid compression blocks. */
44      Folder[] folders = Folder.EMPTY_FOLDER_ARRAY;
45  
46      /** Temporary properties for non-empty files (subsumed into the files array later). */
47      SubStreamsInfo subStreamsInfo;
48  
49      /** The files and directories in the archive. */
50      SevenZArchiveEntry[] files = SevenZArchiveEntry.EMPTY_SEVEN_Z_ARCHIVE_ENTRY_ARRAY;
51  
52      /** Mapping between folders, files and streams. */
53      StreamMap streamMap;
54  
55      @Override
56      public String toString() {
57          return "Archive with packed streams starting at offset " + packPos + ", " + lengthOf(packSizes) + " pack sizes, " + lengthOf(packCrcs) + " CRCs, "
58                  + lengthOf(folders) + " folders, " + lengthOf(files) + " files and " + streamMap;
59      }
60  }