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1 | #include "git-compat-util.h" | |
2 | #include "object-name.h" | |
3 | #include "remote.h" | |
4 | #include "refspec.h" | |
5 | #include "repository.h" | |
6 | #include "checkout.h" | |
7 | #include "config.h" | |
8 | #include "strbuf.h" | |
9 | ||
10 | struct tracking_name_data { | |
11 | /* const */ char *src_ref; | |
12 | char *dst_ref; | |
13 | struct object_id *dst_oid; | |
14 | int num_matches; | |
15 | const char *default_remote; | |
16 | char *default_dst_ref; | |
17 | struct object_id *default_dst_oid; | |
18 | }; | |
19 | ||
20 | #define TRACKING_NAME_DATA_INIT { 0 } | |
21 | ||
22 | static int check_tracking_name(struct remote *remote, void *cb_data) | |
23 | { | |
24 | struct tracking_name_data *cb = cb_data; | |
25 | struct refspec_item query; | |
26 | memset(&query, 0, sizeof(struct refspec_item)); | |
27 | query.src = cb->src_ref; | |
28 | if (remote_find_tracking(remote, &query) || | |
29 | repo_get_oid(the_repository, query.dst, cb->dst_oid)) { | |
30 | free(query.dst); | |
31 | return 0; | |
32 | } | |
33 | cb->num_matches++; | |
34 | if (cb->default_remote && !strcmp(remote->name, cb->default_remote)) { | |
35 | struct object_id *dst = xmalloc(sizeof(*cb->default_dst_oid)); | |
36 | cb->default_dst_ref = xstrdup(query.dst); | |
37 | oidcpy(dst, cb->dst_oid); | |
38 | cb->default_dst_oid = dst; | |
39 | } | |
40 | if (cb->dst_ref) { | |
41 | free(query.dst); | |
42 | return 0; | |
43 | } | |
44 | cb->dst_ref = query.dst; | |
45 | return 0; | |
46 | } | |
47 | ||
48 | const char *unique_tracking_name(const char *name, struct object_id *oid, | |
49 | int *dwim_remotes_matched) | |
50 | { | |
51 | struct tracking_name_data cb_data = TRACKING_NAME_DATA_INIT; | |
52 | const char *default_remote = NULL; | |
53 | if (!git_config_get_string_tmp("checkout.defaultremote", &default_remote)) | |
54 | cb_data.default_remote = default_remote; | |
55 | cb_data.src_ref = xstrfmt("refs/heads/%s", name); | |
56 | cb_data.dst_oid = oid; | |
57 | for_each_remote(check_tracking_name, &cb_data); | |
58 | if (dwim_remotes_matched) | |
59 | *dwim_remotes_matched = cb_data.num_matches; | |
60 | free(cb_data.src_ref); | |
61 | if (cb_data.num_matches == 1) { | |
62 | free(cb_data.default_dst_ref); | |
63 | free(cb_data.default_dst_oid); | |
64 | return cb_data.dst_ref; | |
65 | } | |
66 | free(cb_data.dst_ref); | |
67 | if (cb_data.default_dst_ref) { | |
68 | oidcpy(oid, cb_data.default_dst_oid); | |
69 | free(cb_data.default_dst_oid); | |
70 | return cb_data.default_dst_ref; | |
71 | } | |
72 | return NULL; | |
73 | } |