]>
Commit | Line | Data |
---|---|---|
b24c88b3 RC |
1 | /* |
2 | * Copyright (c) 2001, Robert Collins. | |
3 | * | |
4 | * This program is free software; you can redistribute it and/or modify | |
5 | * it under the terms of the GNU General Public License as published by | |
6 | * the Free Software Foundation; either version 2 of the License, or | |
7 | * (at your option) any later version. | |
8 | * | |
9 | * A copy of the GNU General Public License can be found at | |
10 | * http://www.gnu.org/ | |
11 | * | |
12 | * Written by Robert Collins <rbtcollins@hotmail.com> | |
13 | * | |
14 | */ | |
15 | ||
c93bc6d0 MB |
16 | #ifndef SETUP_COMPRESS_BZ_H |
17 | #define SETUP_COMPRESS_BZ_H | |
b24c88b3 | 18 | |
b16e07fc | 19 | #include "compress.h" |
b24c88b3 | 20 | |
db04fc41 | 21 | #include <bzlib.h> |
b24c88b3 RC |
22 | |
23 | class compress_bz:public compress | |
24 | { | |
25 | public: | |
26 | /* assumes decompression */ | |
27 | compress_bz (io_stream *); | |
28 | /* allows comp/decomp but this implementation only handles comp */ | |
29 | compress_bz (io_stream *, const char *); | |
30 | /* read data (duh!) */ | |
31 | virtual ssize_t read (void *buffer, size_t len); | |
32 | /* provide data to (double duh!) */ | |
ca9506cc | 33 | virtual ssize_t write (const void *buffer, size_t len); |
b24c88b3 RC |
34 | /* read data without removing it from the class's internal buffer */ |
35 | virtual ssize_t peek (void *buffer, size_t len); | |
44d31ea0 CV |
36 | virtual off_t tell (); |
37 | virtual off_t seek (off_t where, io_stream_seek_t whence); | |
b24c88b3 RC |
38 | /* try guessing this one */ |
39 | virtual int error (); | |
40 | /* Find out the next stream name - | |
41 | * ie for foo.tar.bz, at offset 0, next_file_name = foo.tar | |
42 | * for foobar that is an compress, next_file_name is the next | |
43 | * extractable filename. | |
44 | */ | |
45 | virtual const char *next_file_name () | |
46 | { | |
47 | return NULL; | |
48 | }; | |
26922cd2 | 49 | virtual int set_mtime (time_t); |
341988b9 RC |
50 | /* Use seek EOF, then tell (). get_size won't do this incase you are sucking dow |
51 | * over a WAN :} */ | |
52 | virtual size_t get_size () {return 0;}; | |
b41c2908 CV |
53 | virtual time_t get_mtime (); |
54 | virtual mode_t get_mode (); | |
5bc84ff1 | 55 | virtual void release_original (); /* give up ownership of original io_stream */ |
b24c88b3 RC |
56 | /* if you are still needing these hints... give up now! */ |
57 | virtual ~ compress_bz (); | |
58 | private: | |
59 | io_stream *original; | |
5bc84ff1 | 60 | bool owns_original; |
b24c88b3 RC |
61 | char peekbuf[512]; |
62 | size_t peeklen; | |
63 | int lasterr; | |
64 | bz_stream strm; | |
65 | int initialisedOk; | |
3e4ddc99 | 66 | int endReached; |
b24c88b3 RC |
67 | char buf[4096]; |
68 | int writing; | |
387cb501 | 69 | size_t position; |
840e95c1 | 70 | void init_state(void); |
b24c88b3 RC |
71 | }; |
72 | ||
c93bc6d0 | 73 | #endif /* SETUP_COMPRESS_BZ_H */ |