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
|
#include "test-tool.h"
#include "hex.h"
int cmd_hash_impl(int ac, const char **av, int algo)
{
git_hash_ctx ctx;
unsigned char hash[GIT_MAX_HEXSZ];
unsigned bufsz = 8192;
int binary = 0;
char *buffer;
const struct git_hash_algo *algop = &hash_algos[algo];
if (ac == 2) {
if (!strcmp(av[1], "-b"))
binary = 1;
else
bufsz = strtoul(av[1], NULL, 10) * 1024 * 1024;
}
if (!bufsz)
bufsz = 8192;
while ((buffer = malloc(bufsz)) == NULL) {
fprintf(stderr, "bufsz %u is too big, halving...\n", bufsz);
bufsz /= 2;
if (bufsz < 1024)
die("OOPS");
}
algop->init_fn(&ctx);
while (1) {
ssize_t sz, this_sz;
char *cp = buffer;
unsigned room = bufsz;
this_sz = 0;
while (room) {
sz = xread(0, cp, room);
if (sz == 0)
break;
if (sz < 0)
die_errno("test-hash");
this_sz += sz;
cp += sz;
room -= sz;
}
if (this_sz == 0)
break;
algop->update_fn(&ctx, buffer, this_sz);
}
algop->final_fn(hash, &ctx);
if (binary)
fwrite(hash, 1, algop->rawsz, stdout);
else
puts(hash_to_hex_algop(hash, algop));
free(buffer);
return 0;
}
|
