author | ulf69 <ulf69> | 2004-09-15 17:53:22 (UTC) |
---|---|---|
committer | ulf69 <ulf69> | 2004-09-15 17:53:22 (UTC) |
commit | d3925ba5bd25224bc4a60d3d6a107c464994a1ea (patch) (unidiff) | |
tree | 60f69da1d2b79ee3081e7ef5c09a46470ca6eda0 /pwmanager/pwmanager/compressbzip2.cpp | |
parent | ce83a3479d23b9e8a59c745ccd0a0b14f64ef4e8 (diff) | |
download | kdepimpi-d3925ba5bd25224bc4a60d3d6a107c464994a1ea.zip kdepimpi-d3925ba5bd25224bc4a60d3d6a107c464994a1ea.tar.gz kdepimpi-d3925ba5bd25224bc4a60d3d6a107c464994a1ea.tar.bz2 |
initial revision
Diffstat (limited to 'pwmanager/pwmanager/compressbzip2.cpp') (more/less context) (ignore whitespace changes)
-rw-r--r-- | pwmanager/pwmanager/compressbzip2.cpp | 138 |
1 files changed, 138 insertions, 0 deletions
diff --git a/pwmanager/pwmanager/compressbzip2.cpp b/pwmanager/pwmanager/compressbzip2.cpp new file mode 100644 index 0000000..c3a9edd --- a/dev/null +++ b/pwmanager/pwmanager/compressbzip2.cpp | |||
@@ -0,0 +1,138 @@ | |||
1 | /*************************************************************************** | ||
2 | * * | ||
3 | * copyright (C) 2003, 2004 by Michael Buesch * | ||
4 | * email: mbuesch@freenet.de * | ||
5 | * * | ||
6 | * This program is free software; you can redistribute it and/or modify * | ||
7 | * it under the terms of the GNU General Public License version 2 * | ||
8 | * as published by the Free Software Foundation. * | ||
9 | * * | ||
10 | ***************************************************************************/ | ||
11 | |||
12 | /*************************************************************************** | ||
13 | * copyright (C) 2004 by Ulf Schenk | ||
14 | * This file is originaly based on version 1.0.1 of pwmanager | ||
15 | * and was modified to run on embedded devices that run microkde | ||
16 | * | ||
17 | * $Id$ | ||
18 | **************************************************************************/ | ||
19 | |||
20 | #include "compressbzip2.h" | ||
21 | |||
22 | #include <stdlib.h> | ||
23 | |||
24 | #define BZ_NO_STDIO | ||
25 | #include <bzlib.h> | ||
26 | |||
27 | #define BZ_BLOCK_SIZE 9 | ||
28 | #define BZ_WORK_FACTOR 30 | ||
29 | #define EXPAND_COMPRESS_DESTBUF_BYTES 1024 | ||
30 | #define EXPAND_DECOMPRESS_DESTBUF_BYTES (1024 * 10) | ||
31 | |||
32 | |||
33 | bool CompressBzip2::compress(string *d) | ||
34 | { | ||
35 | int ret; | ||
36 | char *dest, *source; | ||
37 | unsigned int sourceLen, destLen; | ||
38 | |||
39 | sourceLen = d->length(); | ||
40 | destLen = calcCompressDestLen(sourceLen); | ||
41 | source = static_cast<char *>(malloc(sourceLen)); | ||
42 | if (!source) | ||
43 | return false; | ||
44 | memcpy(source, d->c_str(), sourceLen); | ||
45 | dest = static_cast<char *>(malloc(destLen)); | ||
46 | if (!dest) { | ||
47 | free(source); | ||
48 | return false; | ||
49 | } | ||
50 | while (1) { | ||
51 | ret = BZ2_bzBuffToBuffCompress(dest, | ||
52 | &destLen, | ||
53 | source, | ||
54 | sourceLen, | ||
55 | BZ_BLOCK_SIZE, | ||
56 | 0, | ||
57 | BZ_WORK_FACTOR); | ||
58 | switch (ret) { | ||
59 | case BZ_OK: | ||
60 | goto out; | ||
61 | case BZ_OUTBUFF_FULL: | ||
62 | /* we don't use realloc(), because it may | ||
63 | * (in this case) unneccessarily copy the old block | ||
64 | * to the new allocated block. | ||
65 | */ | ||
66 | free(dest); | ||
67 | destLen += EXPAND_COMPRESS_DESTBUF_BYTES; | ||
68 | dest = static_cast<char *>(malloc(destLen)); | ||
69 | if (!dest) { | ||
70 | free(source); | ||
71 | return false; | ||
72 | } | ||
73 | break; | ||
74 | default: | ||
75 | free(source), | ||
76 | free(dest); | ||
77 | return false; | ||
78 | } | ||
79 | } | ||
80 | out: | ||
81 | free(source); | ||
82 | d->assign(dest, destLen); | ||
83 | free(dest); | ||
84 | return true; | ||
85 | } | ||
86 | |||
87 | bool CompressBzip2::decompress(string *d) | ||
88 | { | ||
89 | int ret; | ||
90 | char *dest, *source; | ||
91 | unsigned int sourceLen, destLen; | ||
92 | |||
93 | sourceLen = d->length(); | ||
94 | destLen = calcDecompressDestLen(sourceLen); | ||
95 | source = static_cast<char *>(malloc(sourceLen)); | ||
96 | if (!source) | ||
97 | return false; | ||
98 | memcpy(source, d->c_str(), sourceLen); | ||
99 | dest = static_cast<char *>(malloc(destLen)); | ||
100 | if (!dest) { | ||
101 | free(source); | ||
102 | return false; | ||
103 | } | ||
104 | while (1) { | ||
105 | ret = BZ2_bzBuffToBuffDecompress(dest, | ||
106 | &destLen, | ||
107 | source, | ||
108 | sourceLen, | ||
109 | 0, | ||
110 | 0); | ||
111 | switch (ret) { | ||
112 | case BZ_OK: | ||
113 | goto out; | ||
114 | case BZ_OUTBUFF_FULL: | ||
115 | /* we don't use realloc(), because it may | ||
116 | * (in this case) unneccessarily copy the old block | ||
117 | * to the new allocated block. | ||
118 | */ | ||
119 | free(dest); | ||
120 | destLen += EXPAND_DECOMPRESS_DESTBUF_BYTES; | ||
121 | dest = static_cast<char *>(malloc(destLen)); | ||
122 | if (!dest) { | ||
123 | free(source); | ||
124 | return false; | ||
125 | } | ||
126 | break; | ||
127 | default: | ||
128 | free(source), | ||
129 | free(dest); | ||
130 | return false; | ||
131 | } | ||
132 | } | ||
133 | out: | ||
134 | free(source); | ||
135 | d->assign(dest, destLen); | ||
136 | free(dest); | ||
137 | return true; | ||
138 | } | ||