ls-refs: filter refs using namespace-stripped name
[git/git.git] / builtin / merge-recursive.c
1 #include "builtin.h"
2 #include "commit.h"
3 #include "tag.h"
4 #include "merge-recursive.h"
5 #include "xdiff-interface.h"
6
7 static const char builtin_merge_recursive_usage[] =
8 "git %s <base>... -- <head> <remote> ...";
9
10 static const char *better_branch_name(const char *branch)
11 {
12 static char githead_env[8 + GIT_MAX_HEXSZ + 1];
13 char *name;
14
15 if (strlen(branch) != the_hash_algo->hexsz)
16 return branch;
17 xsnprintf(githead_env, sizeof(githead_env), "GITHEAD_%s", branch);
18 name = getenv(githead_env);
19 return name ? name : branch;
20 }
21
22 int cmd_merge_recursive(int argc, const char **argv, const char *prefix)
23 {
24 const struct object_id *bases[21];
25 unsigned bases_count = 0;
26 int i, failed;
27 struct object_id h1, h2;
28 struct merge_options o;
29 struct commit *result;
30
31 init_merge_options(&o);
32 if (argv[0] && ends_with(argv[0], "-subtree"))
33 o.subtree_shift = "";
34
35 if (argc < 4)
36 usagef(builtin_merge_recursive_usage, argv[0]);
37
38 for (i = 1; i < argc; ++i) {
39 const char *arg = argv[i];
40
41 if (starts_with(arg, "--")) {
42 if (!arg[2])
43 break;
44 if (parse_merge_opt(&o, arg + 2))
45 die(_("unknown option %s"), arg);
46 continue;
47 }
48 if (bases_count < ARRAY_SIZE(bases)-1) {
49 struct object_id *oid = xmalloc(sizeof(struct object_id));
50 if (get_oid(argv[i], oid))
51 die(_("could not parse object '%s'"), argv[i]);
52 bases[bases_count++] = oid;
53 }
54 else
55 warning(Q_("cannot handle more than %d base. "
56 "Ignoring %s.",
57 "cannot handle more than %d bases. "
58 "Ignoring %s.",
59 (int)ARRAY_SIZE(bases)-1),
60 (int)ARRAY_SIZE(bases)-1, argv[i]);
61 }
62 if (argc - i != 3) /* "--" "<head>" "<remote>" */
63 die(_("not handling anything other than two heads merge."));
64
65 o.branch1 = argv[++i];
66 o.branch2 = argv[++i];
67
68 if (get_oid(o.branch1, &h1))
69 die(_("could not resolve ref '%s'"), o.branch1);
70 if (get_oid(o.branch2, &h2))
71 die(_("could not resolve ref '%s'"), o.branch2);
72
73 o.branch1 = better_branch_name(o.branch1);
74 o.branch2 = better_branch_name(o.branch2);
75
76 if (o.verbosity >= 3)
77 printf(_("Merging %s with %s\n"), o.branch1, o.branch2);
78
79 failed = merge_recursive_generic(&o, &h1, &h2, bases_count, bases, &result);
80 if (failed < 0)
81 return 128; /* die() error code */
82 return failed;
83 }