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79c3e0e1 GL |
1 | ///////////////////////////////////////////////////////////////////////////// |
2 | // Name: zstream.h | |
3 | // Purpose: Memory stream classes | |
4 | // Author: Guilhem Lavaux | |
0915d0b2 | 5 | // Modified by: Mike Wetherell |
79c3e0e1 GL |
6 | // Created: 11/07/98 |
7 | // RCS-ID: $Id$ | |
8 | // Copyright: (c) Guilhem Lavaux | |
65571936 | 9 | // Licence: wxWindows licence |
79c3e0e1 | 10 | ///////////////////////////////////////////////////////////////////////////// |
34138703 JS |
11 | #ifndef _WX_WXZSTREAM_H__ |
12 | #define _WX_WXZSTREAM_H__ | |
79c3e0e1 | 13 | |
12028905 | 14 | #if defined(__GNUG__) && !defined(NO_GCC_PRAGMA) |
af49c4b8 | 15 | #pragma interface "zstream.h" |
79c3e0e1 GL |
16 | #endif |
17 | ||
124031d5 | 18 | #include "wx/defs.h" |
ac57418f | 19 | |
ce4169a4 | 20 | #if wxUSE_ZLIB && wxUSE_STREAMS |
ac57418f | 21 | |
ed58dbea | 22 | #include "wx/stream.h" |
79c3e0e1 | 23 | |
0915d0b2 VZ |
24 | // Compression level |
25 | enum { | |
26 | wxZ_DEFAULT_COMPRESSION = -1, | |
27 | wxZ_NO_COMPRESSION = 0, | |
28 | wxZ_BEST_SPEED = 1, | |
29 | wxZ_BEST_COMPRESSION = 9 | |
30 | }; | |
31 | ||
32 | // Flags | |
33 | enum { | |
4c68a102 VS |
34 | #if WXWIN_COMPATIBILITY_2_4 |
35 | wxZLIB_24COMPATIBLE = 4, // read v2.4.x data without error | |
36 | #endif | |
37 | wxZLIB_NO_HEADER = 0, // raw deflate stream, no header or checksum | |
38 | wxZLIB_ZLIB = 1, // zlib header and checksum | |
39 | wxZLIB_GZIP = 2, // gzip header and checksum, requires zlib 1.2.1+ | |
40 | wxZLIB_AUTO = 3 // autodetect header zlib or gzip | |
0915d0b2 VZ |
41 | }; |
42 | ||
bddd7a8d | 43 | class WXDLLIMPEXP_BASE wxZlibInputStream: public wxFilterInputStream { |
79c3e0e1 | 44 | public: |
4c68a102 | 45 | wxZlibInputStream(wxInputStream& stream, int flags = wxZLIB_AUTO); |
79c3e0e1 GL |
46 | virtual ~wxZlibInputStream(); |
47 | ||
0915d0b2 | 48 | char Peek() { return wxInputStream::Peek(); } |
588066b7 | 49 | wxFileOffset GetLength() const { return wxInputStream::GetLength(); } |
0915d0b2 | 50 | |
4c68a102 VS |
51 | static bool CanHandleGZip(); |
52 | ||
79c3e0e1 | 53 | protected: |
75ed1d15 | 54 | size_t OnSysRead(void *buffer, size_t size); |
4004775e | 55 | wxFileOffset OnSysTell() const { return m_pos; } |
1678ad78 GL |
56 | |
57 | protected: | |
79c3e0e1 GL |
58 | size_t m_z_size; |
59 | unsigned char *m_z_buffer; | |
856d2e52 | 60 | struct z_stream_s *m_inflate; |
4004775e | 61 | wxFileOffset m_pos; |
4c68a102 VS |
62 | #if WXWIN_COMPATIBILITY_2_4 |
63 | bool m_24compatibilty; | |
64 | #endif | |
22f3361e | 65 | |
4c68a102 | 66 | DECLARE_NO_COPY_CLASS(wxZlibInputStream) |
79c3e0e1 GL |
67 | }; |
68 | ||
bddd7a8d | 69 | class WXDLLIMPEXP_BASE wxZlibOutputStream: public wxFilterOutputStream { |
79c3e0e1 | 70 | public: |
301deecc | 71 | wxZlibOutputStream(wxOutputStream& stream, int level = -1, int flags = wxZLIB_ZLIB); |
79c3e0e1 GL |
72 | virtual ~wxZlibOutputStream(); |
73 | ||
0915d0b2 | 74 | void Sync() { DoFlush(false); } |
588066b7 | 75 | wxFileOffset GetLength() const { return m_pos; } |
79c3e0e1 | 76 | |
4c68a102 VS |
77 | static bool CanHandleGZip(); |
78 | ||
79c3e0e1 | 79 | protected: |
75ed1d15 | 80 | size_t OnSysWrite(const void *buffer, size_t size); |
4004775e | 81 | wxFileOffset OnSysTell() const { return m_pos; } |
0915d0b2 VZ |
82 | |
83 | virtual void DoFlush(bool final); | |
1678ad78 GL |
84 | |
85 | protected: | |
79c3e0e1 GL |
86 | size_t m_z_size; |
87 | unsigned char *m_z_buffer; | |
856d2e52 | 88 | struct z_stream_s *m_deflate; |
4004775e | 89 | wxFileOffset m_pos; |
22f3361e | 90 | |
4c68a102 | 91 | DECLARE_NO_COPY_CLASS(wxZlibOutputStream) |
79c3e0e1 GL |
92 | }; |
93 | ||
94 | #endif | |
ce4169a4 | 95 | // wxUSE_ZLIB && wxUSE_STREAMS |
ac57418f RR |
96 | |
97 | #endif | |
cc985fac PA |
98 | // _WX_WXZSTREAM_H__ |
99 |