p2000: add sparse-index repos
[git] / merge-ort-wrappers.c
1 #include "cache.h"
2 #include "merge-ort.h"
3 #include "merge-ort-wrappers.h"
4
5 #include "commit.h"
6
7 static int unclean(struct merge_options *opt, struct tree *head)
8 {
9         /* Sanity check on repo state; index must match head */
10         struct strbuf sb = STRBUF_INIT;
11
12         if (head && repo_index_has_changes(opt->repo, head, &sb)) {
13                 fprintf(stderr, _("Your local changes to the following files would be overwritten by merge:\n  %s"),
14                     sb.buf);
15                 strbuf_release(&sb);
16                 return -1;
17         }
18
19         return 0;
20 }
21
22 int merge_ort_nonrecursive(struct merge_options *opt,
23                            struct tree *head,
24                            struct tree *merge,
25                            struct tree *merge_base)
26 {
27         struct merge_result result;
28
29         if (unclean(opt, head))
30                 return -1;
31
32         if (oideq(&merge_base->object.oid, &merge->object.oid)) {
33                 printf(_("Already up to date!"));
34                 return 1;
35         }
36
37         memset(&result, 0, sizeof(result));
38         merge_incore_nonrecursive(opt, merge_base, head, merge, &result);
39         merge_switch_to_result(opt, head, &result, 1, 1);
40
41         return result.clean;
42 }
43
44 int merge_ort_recursive(struct merge_options *opt,
45                         struct commit *side1,
46                         struct commit *side2,
47                         struct commit_list *merge_bases,
48                         struct commit **result)
49 {
50         struct tree *head = repo_get_commit_tree(opt->repo, side1);
51         struct merge_result tmp;
52
53         if (unclean(opt, head))
54                 return -1;
55
56         memset(&tmp, 0, sizeof(tmp));
57         merge_incore_recursive(opt, merge_bases, side1, side2, &tmp);
58         merge_switch_to_result(opt, head, &tmp, 1, 1);
59         *result = NULL;
60
61         return tmp.clean;
62 }