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
|
#include "git-compat-util.h"
#include "bloom.h"
#include "test-tool.h"
#include "commit.h"
struct bloom_filter_settings settings = DEFAULT_BLOOM_FILTER_SETTINGS;
static void add_string_to_filter(const char *data, struct bloom_filter *filter) {
struct bloom_key key;
int i;
fill_bloom_key(data, strlen(data), &key, &settings);
printf("Hashes:");
for (i = 0; i < settings.num_hashes; i++){
printf("0x%08x|", key.hashes[i]);
}
printf("\n");
add_key_to_filter(&key, filter, &settings);
}
static void print_bloom_filter(struct bloom_filter *filter) {
int i;
if (!filter) {
printf("No filter.\n");
return;
}
printf("Filter_Length:%d\n", (int)filter->len);
printf("Filter_Data:");
for (i = 0; i < filter->len; i++){
printf("%02x|", filter->data[i]);
}
printf("\n");
}
static void get_bloom_filter_for_commit(const struct object_id *commit_oid)
{
struct commit *c;
struct bloom_filter *filter;
setup_git_directory();
c = lookup_commit(the_repository, commit_oid);
filter = get_bloom_filter(the_repository, c, 1);
print_bloom_filter(filter);
}
int cmd__bloom(int argc, const char **argv)
{
if (!strcmp(argv[1], "get_murmur3")) {
uint32_t hashed = murmur3_seeded(0, argv[2], strlen(argv[2]));
printf("Murmur3 Hash with seed=0:0x%08x\n", hashed);
}
if (!strcmp(argv[1], "generate_filter")) {
struct bloom_filter filter;
int i = 2;
filter.len = (settings.bits_per_entry + BITS_PER_WORD - 1) / BITS_PER_WORD;
filter.data = xcalloc(filter.len, sizeof(unsigned char));
if (!argv[2]){
die("at least one input string expected");
}
while (argv[i]) {
add_string_to_filter(argv[i], &filter);
i++;
}
print_bloom_filter(&filter);
}
if (!strcmp(argv[1], "get_filter_for_commit")) {
struct object_id oid;
const char *end;
if (parse_oid_hex(argv[2], &oid, &end))
die("cannot parse oid '%s'", argv[2]);
init_bloom_filters();
get_bloom_filter_for_commit(&oid);
}
return 0;
}
|
