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d9c0dbb0 CMN |
1 | /* |
2 | * Copyright (C) the libgit2 contributors. All rights reserved. | |
3 | * | |
4 | * This file is part of libgit2, distributed under the GNU GPL v2 with | |
5 | * a Linking Exception. For full terms see the included COPYING file. | |
6 | */ | |
7 | ||
eae0bfdc PP |
8 | #ifndef INCLUDE_hash_hash_common_crypto_h__ |
9 | #define INCLUDE_hash_hash_common_crypto_h__ | |
d9c0dbb0 CMN |
10 | |
11 | #include "hash.h" | |
12 | ||
13 | #include <CommonCrypto/CommonDigest.h> | |
14 | ||
15 | struct git_hash_ctx { | |
16 | CC_SHA1_CTX c; | |
17 | }; | |
18 | ||
eae0bfdc PP |
19 | #define CC_LONG_MAX ((CC_LONG)-1) |
20 | ||
d9c0dbb0 CMN |
21 | #define git_hash_ctx_init(ctx) git_hash_init(ctx) |
22 | #define git_hash_ctx_cleanup(ctx) | |
23 | ||
ac3d33df JK |
24 | GIT_INLINE(int) git_hash_global_init(void) |
25 | { | |
26 | return 0; | |
27 | } | |
28 | ||
d9c0dbb0 CMN |
29 | GIT_INLINE(int) git_hash_init(git_hash_ctx *ctx) |
30 | { | |
31 | assert(ctx); | |
32 | CC_SHA1_Init(&ctx->c); | |
33 | return 0; | |
34 | } | |
35 | ||
eae0bfdc | 36 | GIT_INLINE(int) git_hash_update(git_hash_ctx *ctx, const void *_data, size_t len) |
d9c0dbb0 | 37 | { |
eae0bfdc PP |
38 | const unsigned char *data = _data; |
39 | ||
d9c0dbb0 | 40 | assert(ctx); |
eae0bfdc PP |
41 | |
42 | while (len > 0) { | |
43 | CC_LONG chunk = (len > CC_LONG_MAX) ? CC_LONG_MAX : (CC_LONG)len; | |
44 | ||
45 | CC_SHA1_Update(&ctx->c, data, chunk); | |
46 | ||
47 | data += chunk; | |
48 | len -= chunk; | |
49 | } | |
50 | ||
d9c0dbb0 CMN |
51 | return 0; |
52 | } | |
53 | ||
54 | GIT_INLINE(int) git_hash_final(git_oid *out, git_hash_ctx *ctx) | |
55 | { | |
56 | assert(ctx); | |
57 | CC_SHA1_Final(out->id, &ctx->c); | |
58 | return 0; | |
59 | } | |
60 | ||
eae0bfdc | 61 | #endif |