refspec: rename struct refspec to struct refspec_item
[git/git.git] / checkout.c
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1#include "cache.h"
2#include "remote.h"
ec0cb496 3#include "refspec.h"
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4#include "checkout.h"
5
6struct tracking_name_data {
7 /* const */ char *src_ref;
8 char *dst_ref;
9 struct object_id *dst_oid;
10 int unique;
11};
12
13static int check_tracking_name(struct remote *remote, void *cb_data)
14{
15 struct tracking_name_data *cb = cb_data;
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16 struct refspec_item query;
17 memset(&query, 0, sizeof(struct refspec_item));
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18 query.src = cb->src_ref;
19 if (remote_find_tracking(remote, &query) ||
20 get_oid(query.dst, cb->dst_oid)) {
21 free(query.dst);
22 return 0;
23 }
24 if (cb->dst_ref) {
25 free(query.dst);
26 cb->unique = 0;
27 return 0;
28 }
29 cb->dst_ref = query.dst;
30 return 0;
31}
32
33const char *unique_tracking_name(const char *name, struct object_id *oid)
34{
35 struct tracking_name_data cb_data = { NULL, NULL, NULL, 1 };
36 cb_data.src_ref = xstrfmt("refs/heads/%s", name);
37 cb_data.dst_oid = oid;
38 for_each_remote(check_tracking_name, &cb_data);
39 free(cb_data.src_ref);
40 if (cb_data.unique)
41 return cb_data.dst_ref;
42 free(cb_data.dst_ref);
43 return NULL;
44}