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@xxxxxxxxx>
---
Makefile | 1 +
builtin/checkout.c | 41 +----------------------------------------
checkout.c | 43 +++++++++++++++++++++++++++++++++++++++++++
checkout.h | 13 +++++++++++++
4 files changed, 58 insertions(+), 40 deletions(-)
create mode 100644 checkout.c
create mode 100644 checkout.h
diff --git a/Makefile b/Makefile
index e53750ca01..a80a8fcca9 100644
--- a/Makefile
+++ b/Makefile
@@ -759,6 +759,7 @@ LIB_OBJS += branch.o
LIB_OBJS += bulk-checkin.o
LIB_OBJS += bundle.o
LIB_OBJS += cache-tree.o
+LIB_OBJS += checkout.o
LIB_OBJS += color.o
LIB_OBJS += column.o
LIB_OBJS += combine-diff.o
diff --git a/builtin/checkout.c b/builtin/checkout.c
index 7d8bcc3833..ad8f94044c 100644
--- a/builtin/checkout.c
+++ b/builtin/checkout.c
@@ -1,5 +1,6 @@
#include "builtin.h"
#include "config.h"
+#include "checkout.h"
#include "lockfile.h"
#include "parse-options.h"
#include "refs.h"
@@ -872,46 +873,6 @@ static int git_checkout_config(const char *var, const char *value, void *cb)
return git_xmerge_config(var, value, NULL);
}
-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;
-}
-
-static 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;
-}
-
static int parse_branchname_arg(int argc, const char **argv,
int dwim_new_local_branch_ok,
struct branch_info *new,
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;
+}
diff --git a/checkout.h b/checkout.h
new file mode 100644
index 0000000000..9980711179
--- /dev/null
+++ b/checkout.h
@@ -0,0 +1,13 @@
+#ifndef CHECKOUT_H
+#define CHECKOUT_H
+
+#include "cache.h"
+
+/*
+ * Check if the branch name uniquely matches a branch name on a remote
+ * tracking branch. Return the name of the remote if such a branch
+ * exists, NULL otherwise.
+ */
+extern const char *unique_tracking_name(const char *name, struct object_id *oid);
+
+#endif /* CHECKOUT_H */
--
2.15.0.426.gb06021eeb
