diff options
Diffstat (limited to 'utils/zenutils/libraries/zlib123/zlib/compress.c')
-rw-r--r--[-rwxr-xr-x] | utils/zenutils/libraries/zlib123/zlib/compress.c | 158 |
1 files changed, 79 insertions, 79 deletions
diff --git a/utils/zenutils/libraries/zlib123/zlib/compress.c b/utils/zenutils/libraries/zlib123/zlib/compress.c index d37e84f5e3..df04f0148e 100755..100644 --- a/utils/zenutils/libraries/zlib123/zlib/compress.c +++ b/utils/zenutils/libraries/zlib123/zlib/compress.c | |||
@@ -1,79 +1,79 @@ | |||
1 | /* compress.c -- compress a memory buffer | 1 | /* compress.c -- compress a memory buffer |
2 | * Copyright (C) 1995-2003 Jean-loup Gailly. | 2 | * Copyright (C) 1995-2003 Jean-loup Gailly. |
3 | * For conditions of distribution and use, see copyright notice in zlib.h | 3 | * For conditions of distribution and use, see copyright notice in zlib.h |
4 | */ | 4 | */ |
5 | 5 | ||
6 | /* @(#) $Id$ */ | 6 | /* @(#) $Id$ */ |
7 | 7 | ||
8 | #define ZLIB_INTERNAL | 8 | #define ZLIB_INTERNAL |
9 | #include "zlib.h" | 9 | #include "zlib.h" |
10 | 10 | ||
11 | /* =========================================================================== | 11 | /* =========================================================================== |
12 | Compresses the source buffer into the destination buffer. The level | 12 | Compresses the source buffer into the destination buffer. The level |
13 | parameter has the same meaning as in deflateInit. sourceLen is the byte | 13 | parameter has the same meaning as in deflateInit. sourceLen is the byte |
14 | length of the source buffer. Upon entry, destLen is the total size of the | 14 | length of the source buffer. Upon entry, destLen is the total size of the |
15 | destination buffer, which must be at least 0.1% larger than sourceLen plus | 15 | destination buffer, which must be at least 0.1% larger than sourceLen plus |
16 | 12 bytes. Upon exit, destLen is the actual size of the compressed buffer. | 16 | 12 bytes. Upon exit, destLen is the actual size of the compressed buffer. |
17 | 17 | ||
18 | compress2 returns Z_OK if success, Z_MEM_ERROR if there was not enough | 18 | compress2 returns Z_OK if success, Z_MEM_ERROR if there was not enough |
19 | memory, Z_BUF_ERROR if there was not enough room in the output buffer, | 19 | memory, Z_BUF_ERROR if there was not enough room in the output buffer, |
20 | Z_STREAM_ERROR if the level parameter is invalid. | 20 | Z_STREAM_ERROR if the level parameter is invalid. |
21 | */ | 21 | */ |
22 | int ZEXPORT compress2 (dest, destLen, source, sourceLen, level) | 22 | int ZEXPORT compress2 (dest, destLen, source, sourceLen, level) |
23 | Bytef *dest; | 23 | Bytef *dest; |
24 | uLongf *destLen; | 24 | uLongf *destLen; |
25 | const Bytef *source; | 25 | const Bytef *source; |
26 | uLong sourceLen; | 26 | uLong sourceLen; |
27 | int level; | 27 | int level; |
28 | { | 28 | { |
29 | z_stream stream; | 29 | z_stream stream; |
30 | int err; | 30 | int err; |
31 | 31 | ||
32 | stream.next_in = (Bytef*)source; | 32 | stream.next_in = (Bytef*)source; |
33 | stream.avail_in = (uInt)sourceLen; | 33 | stream.avail_in = (uInt)sourceLen; |
34 | #ifdef MAXSEG_64K | 34 | #ifdef MAXSEG_64K |
35 | /* Check for source > 64K on 16-bit machine: */ | 35 | /* Check for source > 64K on 16-bit machine: */ |
36 | if ((uLong)stream.avail_in != sourceLen) return Z_BUF_ERROR; | 36 | if ((uLong)stream.avail_in != sourceLen) return Z_BUF_ERROR; |
37 | #endif | 37 | #endif |
38 | stream.next_out = dest; | 38 | stream.next_out = dest; |
39 | stream.avail_out = (uInt)*destLen; | 39 | stream.avail_out = (uInt)*destLen; |
40 | if ((uLong)stream.avail_out != *destLen) return Z_BUF_ERROR; | 40 | if ((uLong)stream.avail_out != *destLen) return Z_BUF_ERROR; |
41 | 41 | ||
42 | stream.zalloc = (alloc_func)0; | 42 | stream.zalloc = (alloc_func)0; |
43 | stream.zfree = (free_func)0; | 43 | stream.zfree = (free_func)0; |
44 | stream.opaque = (voidpf)0; | 44 | stream.opaque = (voidpf)0; |
45 | 45 | ||
46 | err = deflateInit(&stream, level); | 46 | err = deflateInit(&stream, level); |
47 | if (err != Z_OK) return err; | 47 | if (err != Z_OK) return err; |
48 | 48 | ||
49 | err = deflate(&stream, Z_FINISH); | 49 | err = deflate(&stream, Z_FINISH); |
50 | if (err != Z_STREAM_END) { | 50 | if (err != Z_STREAM_END) { |
51 | deflateEnd(&stream); | 51 | deflateEnd(&stream); |
52 | return err == Z_OK ? Z_BUF_ERROR : err; | 52 | return err == Z_OK ? Z_BUF_ERROR : err; |
53 | } | 53 | } |
54 | *destLen = stream.total_out; | 54 | *destLen = stream.total_out; |
55 | 55 | ||
56 | err = deflateEnd(&stream); | 56 | err = deflateEnd(&stream); |
57 | return err; | 57 | return err; |
58 | } | 58 | } |
59 | 59 | ||
60 | /* =========================================================================== | 60 | /* =========================================================================== |
61 | */ | 61 | */ |
62 | int ZEXPORT compress (dest, destLen, source, sourceLen) | 62 | int ZEXPORT compress (dest, destLen, source, sourceLen) |
63 | Bytef *dest; | 63 | Bytef *dest; |
64 | uLongf *destLen; | 64 | uLongf *destLen; |
65 | const Bytef *source; | 65 | const Bytef *source; |
66 | uLong sourceLen; | 66 | uLong sourceLen; |
67 | { | 67 | { |
68 | return compress2(dest, destLen, source, sourceLen, Z_DEFAULT_COMPRESSION); | 68 | return compress2(dest, destLen, source, sourceLen, Z_DEFAULT_COMPRESSION); |
69 | } | 69 | } |
70 | 70 | ||
71 | /* =========================================================================== | 71 | /* =========================================================================== |
72 | If the default memLevel or windowBits for deflateInit() is changed, then | 72 | If the default memLevel or windowBits for deflateInit() is changed, then |
73 | this function needs to be updated. | 73 | this function needs to be updated. |
74 | */ | 74 | */ |
75 | uLong ZEXPORT compressBound (sourceLen) | 75 | uLong ZEXPORT compressBound (sourceLen) |
76 | uLong sourceLen; | 76 | uLong sourceLen; |
77 | { | 77 | { |
78 | return sourceLen + (sourceLen >> 12) + (sourceLen >> 14) + 11; | 78 | return sourceLen + (sourceLen >> 12) + (sourceLen >> 14) + 11; |
79 | } | 79 | } |