1 | /* This file is part of Strigi Desktop Search |
2 | * |
3 | * Copyright (C) 2006 Jos van den Oever <jos@vandenoever.info> |
4 | * |
5 | * This library is free software; you can redistribute it and/or |
6 | * modify it under the terms of the GNU Library General Public |
7 | * License as published by the Free Software Foundation; either |
8 | * version 2 of the License, or (at your option) any later version. |
9 | * |
10 | * This library is distributed in the hope that it will be useful, |
11 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
12 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
13 | * Library General Public License for more details. |
14 | * |
15 | * You should have received a copy of the GNU Library General Public License |
16 | * along with this library; see the file COPYING.LIB. If not, write to |
17 | * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, |
18 | * Boston, MA 02110-1301, USA. |
19 | */ |
20 | #ifndef STRIGI_ZIPINPUTSTREAM_H |
21 | #define STRIGI_ZIPINPUTSTREAM_H |
22 | |
23 | #include <strigi/substreamprovider.h> |
24 | #include <strigi/gzipinputstream.h> |
25 | |
26 | namespace Strigi { |
27 | |
28 | /** |
29 | * Partial implementation of the zip file format according to |
30 | * http://www.pkware.com/business_and_developers/developer/popups/appnote.txt |
31 | * http://www.pkware.com/documents/casestudies/APPNOTE.TXT |
32 | * 99% of zip files on my system can be read with this class. |
33 | * Exceptions are files that are (at least) |
34 | * - files generated by writing to stdout |
35 | * - files using other compression as deflated |
36 | * - encrypted files |
37 | **/ |
38 | class STREAMS_EXPORT ZipInputStream : public SubStreamProvider { |
39 | private: |
40 | // information relating to the current entry |
41 | InputStream* compressedEntryStream; |
42 | GZipInputStream *uncompressionStream; |
43 | int32_t entryCompressedSize; |
44 | int32_t compressionMethod; |
45 | |
46 | void readFileName(int32_t len); |
47 | void (); |
48 | public: |
49 | explicit ZipInputStream(InputStream* input); |
50 | ~ZipInputStream(); |
51 | InputStream* nextEntry(); |
52 | static bool (const char* data, int32_t datasize); |
53 | static SubStreamProvider* factory(InputStream* input) { |
54 | return new ZipInputStream(input); |
55 | } |
56 | }; |
57 | |
58 | } // end namespace Strigi |
59 | |
60 | #endif |
61 | |