summaryrefslogtreecommitdiff
path: root/checkout.c
diff options
context:
space:
mode:
authorThomas Gummerer <t.gummerer@gmail.com>2017-11-26 19:43:51 +0000
committerJunio C Hamano <gitster@pobox.com>2017-11-27 09:48:06 +0900
commit7c85a87c5449f6495fe0327cfdcd1e0940d8545a (patch)
treea720e4dac184883c79a1b3f9a345472a256ef444 /checkout.c
parent14c63a9dc093d6738454f6369a4f5663ca732cf7 (diff)
downloadgit-7c85a87c5449f6495fe0327cfdcd1e0940d8545a.tar.gz
checkout: factor out functions to new lib file
Factor the functions out, so they can be re-used from other places. In particular these functions will be re-used in builtin/worktree.c to make git worktree add dwim more. While there add some docs to the function. Signed-off-by: Thomas Gummerer <t.gummerer@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
Diffstat (limited to 'checkout.c')
-rw-r--r--checkout.c43
1 files changed, 43 insertions, 0 deletions
diff --git a/checkout.c b/checkout.c
new file mode 100644
index 0000000000..ac42630f74
--- /dev/null
+++ b/checkout.c
@@ -0,0 +1,43 @@
+#include "cache.h"
+#include "remote.h"
+#include "checkout.h"
+
+struct tracking_name_data {
+ /* const */ char *src_ref;
+ char *dst_ref;
+ struct object_id *dst_oid;
+ int unique;
+};
+
+static int check_tracking_name(struct remote *remote, void *cb_data)
+{
+ struct tracking_name_data *cb = cb_data;
+ struct refspec query;
+ memset(&query, 0, sizeof(struct refspec));
+ query.src = cb->src_ref;
+ if (remote_find_tracking(remote, &query) ||
+ get_oid(query.dst, cb->dst_oid)) {
+ free(query.dst);
+ return 0;
+ }
+ if (cb->dst_ref) {
+ free(query.dst);
+ cb->unique = 0;
+ return 0;
+ }
+ cb->dst_ref = query.dst;
+ return 0;
+}
+
+const char *unique_tracking_name(const char *name, struct object_id *oid)
+{
+ struct tracking_name_data cb_data = { NULL, NULL, NULL, 1 };
+ cb_data.src_ref = xstrfmt("refs/heads/%s", name);
+ cb_data.dst_oid = oid;
+ for_each_remote(check_tracking_name, &cb_data);
+ free(cb_data.src_ref);
+ if (cb_data.unique)
+ return cb_data.dst_ref;
+ free(cb_data.dst_ref);
+ return NULL;
+}