diff options
Diffstat (limited to 'infutil.c')
-rw-r--r-- | infutil.c | 87 |
1 files changed, 0 insertions, 87 deletions
diff --git a/infutil.c b/infutil.c deleted file mode 100644 index 9a07622..0000000 --- a/infutil.c +++ /dev/null | |||
@@ -1,87 +0,0 @@ | |||
1 | /* inflate_util.c -- data and routines common to blocks and codes | ||
2 | * Copyright (C) 1995-2002 Mark Adler | ||
3 | * For conditions of distribution and use, see copyright notice in zlib.h | ||
4 | */ | ||
5 | |||
6 | #include "zutil.h" | ||
7 | #include "infblock.h" | ||
8 | #include "inftrees.h" | ||
9 | #include "infcodes.h" | ||
10 | #include "infutil.h" | ||
11 | |||
12 | struct inflate_codes_state {int dummy;}; /* for buggy compilers */ | ||
13 | |||
14 | /* And'ing with mask[n] masks the lower n bits */ | ||
15 | uInt inflate_mask[17] = { | ||
16 | 0x0000, | ||
17 | 0x0001, 0x0003, 0x0007, 0x000f, 0x001f, 0x003f, 0x007f, 0x00ff, | ||
18 | 0x01ff, 0x03ff, 0x07ff, 0x0fff, 0x1fff, 0x3fff, 0x7fff, 0xffff | ||
19 | }; | ||
20 | |||
21 | |||
22 | /* copy as much as possible from the sliding window to the output area */ | ||
23 | int inflate_flush(s, z, r) | ||
24 | inflate_blocks_statef *s; | ||
25 | z_streamp z; | ||
26 | int r; | ||
27 | { | ||
28 | uInt n; | ||
29 | Bytef *p; | ||
30 | Bytef *q; | ||
31 | |||
32 | /* local copies of source and destination pointers */ | ||
33 | p = z->next_out; | ||
34 | q = s->read; | ||
35 | |||
36 | /* compute number of bytes to copy as far as end of window */ | ||
37 | n = (uInt)((q <= s->write ? s->write : s->end) - q); | ||
38 | if (n > z->avail_out) n = z->avail_out; | ||
39 | if (n && r == Z_BUF_ERROR) r = Z_OK; | ||
40 | |||
41 | /* update counters */ | ||
42 | z->avail_out -= n; | ||
43 | z->total_out += n; | ||
44 | |||
45 | /* update check information */ | ||
46 | if (s->checkfn != Z_NULL) | ||
47 | z->adler = s->check = (*s->checkfn)(s->check, q, n); | ||
48 | |||
49 | /* copy as far as end of window */ | ||
50 | zmemcpy(p, q, n); | ||
51 | p += n; | ||
52 | q += n; | ||
53 | |||
54 | /* see if more to copy at beginning of window */ | ||
55 | if (q == s->end) | ||
56 | { | ||
57 | /* wrap pointers */ | ||
58 | q = s->window; | ||
59 | if (s->write == s->end) | ||
60 | s->write = s->window; | ||
61 | |||
62 | /* compute bytes to copy */ | ||
63 | n = (uInt)(s->write - q); | ||
64 | if (n > z->avail_out) n = z->avail_out; | ||
65 | if (n && r == Z_BUF_ERROR) r = Z_OK; | ||
66 | |||
67 | /* update counters */ | ||
68 | z->avail_out -= n; | ||
69 | z->total_out += n; | ||
70 | |||
71 | /* update check information */ | ||
72 | if (s->checkfn != Z_NULL) | ||
73 | z->adler = s->check = (*s->checkfn)(s->check, q, n); | ||
74 | |||
75 | /* copy */ | ||
76 | zmemcpy(p, q, n); | ||
77 | p += n; | ||
78 | q += n; | ||
79 | } | ||
80 | |||
81 | /* update pointers */ | ||
82 | z->next_out = p; | ||
83 | s->read = q; | ||
84 | |||
85 | /* done */ | ||
86 | return r; | ||
87 | } | ||