add 'git credential' plumbing command
[git/git.git] / builtin / diff-index.c
CommitLineData
e74f8f6a 1#include "cache.h"
f92a4465 2#include "diff.h"
e09ad6e1
JH
3#include "commit.h"
4#include "revision.h"
e8cc9cd9 5#include "builtin.h"
302ad7a9 6#include "submodule.h"
b5af9107 7
4d1f1190 8static const char diff_cache_usage[] =
1b1dd23f 9"git diff-index [-m] [--cached] "
dda2d79a
JH
10"[<common diff options>] <tree-ish> [<path>...]"
11COMMON_DIFF_OPTIONS_HELP;
c5bac17a 12
a633fca0 13int cmd_diff_index(int argc, const char **argv, const char *prefix)
e74f8f6a 14{
e09ad6e1 15 struct rev_info rev;
e09ad6e1 16 int cached = 0;
6c56c534 17 int i;
41bbf9d5 18 int result;
e74f8f6a 19
a633fca0 20 init_revisions(&rev, prefix);
302ad7a9 21 gitmodules_config();
ef90d6d4 22 git_config(git_diff_basic_config, NULL); /* no "diff" UI options */
e09ad6e1
JH
23 rev.abbrev = 0;
24
25 argc = setup_revisions(argc, argv, &rev, NULL);
6c56c534
LT
26 for (i = 1; i < argc; i++) {
27 const char *arg = argv[i];
a6080a0a 28
5c21ac0e 29 if (!strcmp(arg, "--cached"))
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JH
30 cached = 1;
31 else
6b5ee137 32 usage(diff_cache_usage);
e74f8f6a 33 }
c9b5ef99
TH
34 if (!rev.diffopt.output_format)
35 rev.diffopt.output_format = DIFF_FORMAT_RAW;
36
e09ad6e1
JH
37 /*
38 * Make sure there is one revision (i.e. pending object),
39 * and there is no revision filtering parameters.
40 */
1f1e895f 41 if (rev.pending.nr != 1 ||
e09ad6e1 42 rev.max_count != -1 || rev.min_age != -1 || rev.max_age != -1)
c5bac17a 43 usage(diff_cache_usage);
4f38f6b5
NTND
44 if (!cached)
45 setup_work_tree();
b4e1e4a7
JH
46 if (read_cache() < 0) {
47 perror("read_cache");
48 return -1;
49 }
41bbf9d5 50 result = run_diff_index(&rev, cached);
da31b358 51 return diff_result_code(&rev.diffopt, result);
e74f8f6a 52}