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1 | #define USE_THE_INDEX_COMPATIBILITY_MACROS | |
2 | #include "cache.h" | |
3 | #include "config.h" | |
4 | #include "diff.h" | |
5 | #include "commit.h" | |
6 | #include "revision.h" | |
7 | #include "builtin.h" | |
8 | #include "submodule.h" | |
9 | ||
10 | static const char diff_cache_usage[] = | |
11 | "git diff-index [-m] [--cached] " | |
12 | "[<common-diff-options>] <tree-ish> [<path>...]" | |
13 | COMMON_DIFF_OPTIONS_HELP; | |
14 | ||
15 | int cmd_diff_index(int argc, const char **argv, const char *prefix) | |
16 | { | |
17 | struct rev_info rev; | |
18 | unsigned int option = 0; | |
19 | int i; | |
20 | int result; | |
21 | ||
22 | if (argc == 2 && !strcmp(argv[1], "-h")) | |
23 | usage(diff_cache_usage); | |
24 | ||
25 | git_config(git_diff_basic_config, NULL); /* no "diff" UI options */ | |
26 | repo_init_revisions(the_repository, &rev, prefix); | |
27 | rev.abbrev = 0; | |
28 | prefix = precompose_argv_prefix(argc, argv, prefix); | |
29 | ||
30 | argc = setup_revisions(argc, argv, &rev, NULL); | |
31 | for (i = 1; i < argc; i++) { | |
32 | const char *arg = argv[i]; | |
33 | ||
34 | if (!strcmp(arg, "--cached")) | |
35 | option |= DIFF_INDEX_CACHED; | |
36 | else if (!strcmp(arg, "--merge-base")) | |
37 | option |= DIFF_INDEX_MERGE_BASE; | |
38 | else | |
39 | usage(diff_cache_usage); | |
40 | } | |
41 | if (!rev.diffopt.output_format) | |
42 | rev.diffopt.output_format = DIFF_FORMAT_RAW; | |
43 | ||
44 | rev.diffopt.rotate_to_strict = 1; | |
45 | ||
46 | /* | |
47 | * Make sure there is one revision (i.e. pending object), | |
48 | * and there is no revision filtering parameters. | |
49 | */ | |
50 | if (rev.pending.nr != 1 || | |
51 | rev.max_count != -1 || rev.min_age != -1 || rev.max_age != -1) | |
52 | usage(diff_cache_usage); | |
53 | if (!(option & DIFF_INDEX_CACHED)) { | |
54 | setup_work_tree(); | |
55 | if (read_cache_preload(&rev.diffopt.pathspec) < 0) { | |
56 | perror("read_cache_preload"); | |
57 | return -1; | |
58 | } | |
59 | } else if (read_cache() < 0) { | |
60 | perror("read_cache"); | |
61 | return -1; | |
62 | } | |
63 | result = run_diff_index(&rev, option); | |
64 | UNLEAK(rev); | |
65 | return diff_result_code(&rev.diffopt, result); | |
66 | } |