1 #define USE_THE_INDEX_COMPATIBILITY_MACROS
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
;
15 int cmd_diff_index(int argc
, const char **argv
, const char *prefix
)
18 unsigned int option
= 0;
22 if (argc
== 2 && !strcmp(argv
[1], "-h"))
23 usage(diff_cache_usage
);
25 git_config(git_diff_basic_config
, NULL
); /* no "diff" UI options */
26 repo_init_revisions(the_repository
, &rev
, prefix
);
28 prefix
= precompose_argv_prefix(argc
, argv
, prefix
);
30 argc
= setup_revisions(argc
, argv
, &rev
, NULL
);
31 for (i
= 1; i
< argc
; i
++) {
32 const char *arg
= argv
[i
];
34 if (!strcmp(arg
, "--cached"))
35 option
|= DIFF_INDEX_CACHED
;
36 else if (!strcmp(arg
, "--merge-base"))
37 option
|= DIFF_INDEX_MERGE_BASE
;
39 usage(diff_cache_usage
);
41 if (!rev
.diffopt
.output_format
)
42 rev
.diffopt
.output_format
= DIFF_FORMAT_RAW
;
45 * Make sure there is one revision (i.e. pending object),
46 * and there is no revision filtering parameters.
48 if (rev
.pending
.nr
!= 1 ||
49 rev
.max_count
!= -1 || rev
.min_age
!= -1 || rev
.max_age
!= -1)
50 usage(diff_cache_usage
);
51 if (!(option
& DIFF_INDEX_CACHED
)) {
53 if (read_cache_preload(&rev
.diffopt
.pathspec
) < 0) {
54 perror("read_cache_preload");
57 } else if (read_cache() < 0) {
61 result
= run_diff_index(&rev
, option
);
63 return diff_result_code(&rev
.diffopt
, result
);