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7166bb16 ET |
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 | */ | |
eae0bfdc | 7 | |
b859faa6 | 8 | #include "diff_parse.h" |
eae0bfdc PP |
9 | |
10 | #include "diff.h" | |
7166bb16 ET |
11 | #include "patch.h" |
12 | #include "patch_parse.h" | |
13 | ||
7166bb16 ET |
14 | static void diff_parsed_free(git_diff *d) |
15 | { | |
16 | git_diff_parsed *diff = (git_diff_parsed *)d; | |
17 | git_patch *patch; | |
18 | size_t i; | |
19 | ||
20 | git_vector_foreach(&diff->patches, i, patch) | |
21 | git_patch_free(patch); | |
22 | ||
23 | git_vector_free(&diff->patches); | |
24 | ||
25 | git_vector_free(&diff->base.deltas); | |
26 | git_pool_clear(&diff->base.pool); | |
27 | ||
28 | git__memzero(diff, sizeof(*diff)); | |
29 | git__free(diff); | |
30 | } | |
31 | ||
32 | static git_diff_parsed *diff_parsed_alloc(void) | |
33 | { | |
34 | git_diff_parsed *diff; | |
35 | ||
36 | if ((diff = git__calloc(1, sizeof(git_diff_parsed))) == NULL) | |
37 | return NULL; | |
38 | ||
eae0bfdc | 39 | GIT_REFCOUNT_INC(&diff->base); |
7166bb16 | 40 | diff->base.type = GIT_DIFF_TYPE_PARSED; |
7166bb16 ET |
41 | diff->base.strcomp = git__strcmp; |
42 | diff->base.strncomp = git__strncmp; | |
43 | diff->base.pfxcomp = git__prefixcmp; | |
44 | diff->base.entrycomp = git_diff__entry_cmp; | |
b859faa6 | 45 | diff->base.patch_fn = git_patch_parsed_from_diff; |
7166bb16 ET |
46 | diff->base.free_fn = diff_parsed_free; |
47 | ||
22a2d3d5 | 48 | if (git_diff_options_init(&diff->base.opts, GIT_DIFF_OPTIONS_VERSION) < 0) { |
1cb30b1b | 49 | git__free(diff); |
e7330016 PS |
50 | return NULL; |
51 | } | |
52 | ||
c0eba379 PS |
53 | diff->base.opts.flags &= ~GIT_DIFF_IGNORE_CASE; |
54 | ||
22a2d3d5 UG |
55 | if (git_pool_init(&diff->base.pool, 1) < 0 || |
56 | git_vector_init(&diff->patches, 0, NULL) < 0 || | |
7166bb16 ET |
57 | git_vector_init(&diff->base.deltas, 0, git_diff_delta__cmp) < 0) { |
58 | git_diff_free(&diff->base); | |
59 | return NULL; | |
60 | } | |
61 | ||
62 | git_vector_set_cmp(&diff->base.deltas, git_diff_delta__cmp); | |
63 | ||
64 | return diff; | |
65 | } | |
66 | ||
67 | int git_diff_from_buffer( | |
68 | git_diff **out, | |
69 | const char *content, | |
70 | size_t content_len) | |
71 | { | |
72 | git_diff_parsed *diff; | |
73 | git_patch *patch; | |
74 | git_patch_parse_ctx *ctx = NULL; | |
75 | int error = 0; | |
76 | ||
77 | *out = NULL; | |
78 | ||
79 | diff = diff_parsed_alloc(); | |
ac3d33df | 80 | GIT_ERROR_CHECK_ALLOC(diff); |
7166bb16 ET |
81 | |
82 | ctx = git_patch_parse_ctx_init(content, content_len, NULL); | |
ac3d33df | 83 | GIT_ERROR_CHECK_ALLOC(ctx); |
7166bb16 | 84 | |
eae0bfdc | 85 | while (ctx->parse_ctx.remain_len) { |
7166bb16 ET |
86 | if ((error = git_patch_parse(&patch, ctx)) < 0) |
87 | break; | |
88 | ||
89 | git_vector_insert(&diff->patches, patch); | |
90 | git_vector_insert(&diff->base.deltas, patch->delta); | |
91 | } | |
92 | ||
93 | if (error == GIT_ENOTFOUND && git_vector_length(&diff->patches) > 0) { | |
ac3d33df | 94 | git_error_clear(); |
7166bb16 ET |
95 | error = 0; |
96 | } | |
97 | ||
98 | git_patch_parse_ctx_free(ctx); | |
99 | ||
100 | if (error < 0) | |
101 | git_diff_free(&diff->base); | |
102 | else | |
103 | *out = &diff->base; | |
104 | ||
105 | return error; | |
106 | } | |
107 |