1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
|
/* PR target/54121 */
/* Reported by Jan Engelhardt <jengelh@inai.de> */
/* { dg-do compile { target fpic } } */
/* { dg-options "-std=gnu99 -O -fPIC -fprofile-generate" } */
/* { dg-require-profiling "-fprofile-generate" } */
typedef __SIZE_TYPE__ size_t;
typedef unsigned char uint8_t;
extern void *memcpy (void *__restrict __dest,
__const void *__restrict __src, size_t __n)
__attribute__ ((__nothrow__)) __attribute__ ((__nonnull__ (1, 2)));
typedef enum {
LZMA_OK = 0,
LZMA_STREAM_END = 1,
LZMA_NO_CHECK = 2,
LZMA_UNSUPPORTED_CHECK = 3,
LZMA_GET_CHECK = 4,
LZMA_MEM_ERROR = 5,
LZMA_MEMLIMIT_ERROR = 6,
LZMA_FORMAT_ERROR = 7,
LZMA_OPTIONS_ERROR = 8,
LZMA_DATA_ERROR = 9,
LZMA_BUF_ERROR = 10,
LZMA_PROG_ERROR = 11,
} lzma_ret;
typedef enum {
LZMA_RUN = 0,
LZMA_SYNC_FLUSH = 1,
LZMA_FULL_FLUSH = 2,
LZMA_FINISH = 3
} lzma_action;
typedef struct {
void *( *alloc)(void *opaque, size_t nmemb, size_t size);
void ( *free)(void *opaque, void *ptr);
void *opaque;
} lzma_allocator;
typedef struct lzma_coder_s lzma_coder;
typedef struct lzma_next_coder_s lzma_next_coder;
typedef struct lzma_filter_info_s lzma_filter_info;
typedef lzma_ret (*lzma_init_function)(
lzma_next_coder *next, lzma_allocator *allocator,
const lzma_filter_info *filters);
typedef lzma_ret (*lzma_code_function)(
lzma_coder *coder, lzma_allocator *allocator,
const uint8_t *restrict in, size_t *restrict in_pos,
size_t in_size, uint8_t *restrict out,
size_t *restrict out_pos, size_t out_size,
lzma_action action);
typedef void (*lzma_end_function)(
lzma_coder *coder, lzma_allocator *allocator);
typedef struct {
uint8_t *buf;
size_t pos;
size_t size;
} lzma_dict;
typedef struct {
lzma_coder *coder;
lzma_ret (*code)(lzma_coder *restrict coder,
lzma_dict *restrict dict, const uint8_t *restrict in,
size_t *restrict in_pos, size_t in_size);
} lzma_lz_decoder;
struct lzma_coder_s {
lzma_dict dict;
lzma_lz_decoder lz;
};
lzma_ret
decode_buffer(lzma_coder *coder,
const uint8_t *restrict in, size_t *restrict in_pos,
size_t in_size, uint8_t *restrict out, size_t *restrict out_pos)
{
while (1) {
const size_t dict_start = coder->dict.pos;
const lzma_ret ret
= coder->lz.code( coder->lz.coder, &coder->dict, in, in_pos, in_size);
const size_t copy_size = coder->dict.pos - dict_start;
memcpy(out + *out_pos, coder->dict.buf + dict_start, copy_size);
if (ret != LZMA_OK || coder->dict.pos < coder->dict.size)
return ret;
}
}
|
