4 #include "diff-merges.h"
6 #include "preload-index.h"
7 #include "repository.h"
10 #include "sparse-index.h"
11 #include "submodule.h"
13 static const char diff_cache_usage
[] =
14 "git diff-index [-m] [--cached] [--merge-base] "
15 "[<common-diff-options>] <tree-ish> [<path>...]"
17 COMMON_DIFF_OPTIONS_HELP
;
19 int cmd_diff_index(int argc
, const char **argv
, const char *prefix
)
22 unsigned int option
= 0;
26 if (argc
== 2 && !strcmp(argv
[1], "-h"))
27 usage(diff_cache_usage
);
29 git_config(git_diff_basic_config
, NULL
); /* no "diff" UI options */
30 repo_init_revisions(the_repository
, &rev
, prefix
);
32 prefix
= precompose_argv_prefix(argc
, argv
, prefix
);
35 * We need (some of) diff for merges options (e.g., --cc), and we need
36 * to avoid conflict with our own meaning of "-m".
38 diff_merges_suppress_m_parsing();
40 argc
= setup_revisions(argc
, argv
, &rev
, NULL
);
41 for (i
= 1; i
< argc
; i
++) {
42 const char *arg
= argv
[i
];
44 if (!strcmp(arg
, "--cached"))
45 option
|= DIFF_INDEX_CACHED
;
46 else if (!strcmp(arg
, "--merge-base"))
47 option
|= DIFF_INDEX_MERGE_BASE
;
48 else if (!strcmp(arg
, "-m"))
49 rev
.match_missing
= 1;
51 usage(diff_cache_usage
);
53 if (!rev
.diffopt
.output_format
)
54 rev
.diffopt
.output_format
= DIFF_FORMAT_RAW
;
56 rev
.diffopt
.rotate_to_strict
= 1;
59 * Make sure there is one revision (i.e. pending object),
60 * and there is no revision filtering parameters.
62 if (rev
.pending
.nr
!= 1 ||
63 rev
.max_count
!= -1 || rev
.min_age
!= -1 || rev
.max_age
!= -1)
64 usage(diff_cache_usage
);
65 if (!(option
& DIFF_INDEX_CACHED
)) {
67 if (repo_read_index_preload(the_repository
, &rev
.diffopt
.pathspec
, 0) < 0) {
68 perror("repo_read_index_preload");
71 } else if (repo_read_index(the_repository
) < 0) {
72 perror("repo_read_index");
75 run_diff_index(&rev
, option
);
76 result
= diff_result_code(&rev
.diffopt
);
77 release_revisions(&rev
);