fmt-patch: understand old <his> notation
[git.git] / diff-index.c
1 #include "cache.h"
2 #include "diff.h"
3 #include "commit.h"
4 #include "revision.h"
5
6 static const char diff_cache_usage[] =
7 "git-diff-index [-m] [--cached] "
8 "[<common diff options>] <tree-ish> [<path>...]"
9 COMMON_DIFF_OPTIONS_HELP;
10
11 int main(int argc, const char **argv)
12 {
13         struct rev_info rev;
14         int cached = 0;
15         int i;
16
17         git_config(git_diff_config);
18         init_revisions(&rev);
19         rev.abbrev = 0;
20
21         argc = setup_revisions(argc, argv, &rev, NULL);
22         for (i = 1; i < argc; i++) {
23                 const char *arg = argv[i];
24                         
25                 if (!strcmp(arg, "--cached"))
26                         cached = 1;
27                 else
28                         usage(diff_cache_usage);
29         }
30         /*
31          * Make sure there is one revision (i.e. pending object),
32          * and there is no revision filtering parameters.
33          */
34         if (!rev.pending_objects || rev.pending_objects->next ||
35             rev.max_count != -1 || rev.min_age != -1 || rev.max_age != -1)
36                 usage(diff_cache_usage);
37         return run_diff_index(&rev, cached);
38 }