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authorJeff King <peff@peff.net>2009-08-26 15:05:08 -0400
committerJunio C Hamano <gitster@pobox.com>2009-08-26 19:36:20 -0700
commit7a4ee28f41270bf032d0dd0bfb17f601b9b3971a (patch)
treeb768d18b8892e646ff36075a7ddfc6a13034a59c /builtin-clone.c
parent68ea4741643d9e7c4bdac7cbbe6292edc69430ef (diff)
downloadgit-7a4ee28f41270bf032d0dd0bfb17f601b9b3971a.tar.gz
clone: add --branch option to select a different HEAD
We currently point the HEAD of a newly cloned repo to the same ref as the parent repo's HEAD. While a user can then "git checkout -b foo origin/foo" whichever branch they choose, it is more convenient and more efficient to tell clone which branch you want in the first place. Based on a patch by Kirill A. Korinskiy. Signed-off-by: Jeff King <peff@peff.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
Diffstat (limited to 'builtin-clone.c')
-rw-r--r--builtin-clone.c75
1 files changed, 47 insertions, 28 deletions
diff --git a/builtin-clone.c b/builtin-clone.c
index 32dea74d78..9d79301b8e 100644
--- a/builtin-clone.c
+++ b/builtin-clone.c
@@ -41,6 +41,7 @@ static int option_quiet, option_no_checkout, option_bare, option_mirror;
static int option_local, option_no_hardlinks, option_shared;
static char *option_template, *option_reference, *option_depth;
static char *option_origin = NULL;
+static char *option_branch = NULL;
static char *option_upload_pack = "git-upload-pack";
static int option_verbose;
@@ -65,6 +66,8 @@ static struct option builtin_clone_options[] = {
"reference repository"),
OPT_STRING('o', "origin", &option_origin, "branch",
"use <branch> instead of 'origin' to track upstream"),
+ OPT_STRING('b', "branch", &option_branch, "branch",
+ "checkout <branch> instead of the remote's HEAD"),
OPT_STRING('u', "upload-pack", &option_upload_pack, "path",
"path to git-upload-pack on the remote"),
OPT_STRING(0, "depth", &option_depth, "depth",
@@ -347,7 +350,9 @@ int cmd_clone(int argc, const char **argv, const char *prefix)
const char *repo_name, *repo, *work_tree, *git_dir;
char *path, *dir;
int dest_exists;
- const struct ref *refs, *head_points_at, *remote_head, *mapped_refs;
+ const struct ref *refs, *remote_head, *mapped_refs;
+ const struct ref *remote_head_points_at;
+ const struct ref *our_head_points_at;
struct strbuf key = STRBUF_INIT, value = STRBUF_INIT;
struct strbuf branch_top = STRBUF_INIT, reflog_msg = STRBUF_INIT;
struct transport *transport = NULL;
@@ -519,11 +524,31 @@ int cmd_clone(int argc, const char **argv, const char *prefix)
mapped_refs = write_remote_refs(refs, refspec, reflog_msg.buf);
remote_head = find_ref_by_name(refs, "HEAD");
- head_points_at = guess_remote_head(remote_head, mapped_refs, 0);
+ remote_head_points_at =
+ guess_remote_head(remote_head, mapped_refs, 0);
+
+ if (option_branch) {
+ struct strbuf head = STRBUF_INIT;
+ strbuf_addstr(&head, src_ref_prefix);
+ strbuf_addstr(&head, option_branch);
+ our_head_points_at =
+ find_ref_by_name(mapped_refs, head.buf);
+ strbuf_release(&head);
+
+ if (!our_head_points_at) {
+ warning("Remote branch %s not found in "
+ "upstream %s, using HEAD instead",
+ option_branch, option_origin);
+ our_head_points_at = remote_head_points_at;
+ }
+ }
+ else
+ our_head_points_at = remote_head_points_at;
}
else {
warning("You appear to have cloned an empty repository.");
- head_points_at = NULL;
+ our_head_points_at = NULL;
+ remote_head_points_at = NULL;
remote_head = NULL;
option_no_checkout = 1;
if (!option_bare)
@@ -531,41 +556,35 @@ int cmd_clone(int argc, const char **argv, const char *prefix)
"refs/heads/master");
}
- if (head_points_at) {
- /* Local default branch link */
- create_symref("HEAD", head_points_at->name, NULL);
+ if (remote_head_points_at && !option_bare) {
+ struct strbuf head_ref = STRBUF_INIT;
+ strbuf_addstr(&head_ref, branch_top.buf);
+ strbuf_addstr(&head_ref, "HEAD");
+ create_symref(head_ref.buf,
+ remote_head_points_at->peer_ref->name,
+ reflog_msg.buf);
+ }
+ if (our_head_points_at) {
+ /* Local default branch link */
+ create_symref("HEAD", our_head_points_at->name, NULL);
if (!option_bare) {
- struct strbuf head_ref = STRBUF_INIT;
- const char *head = head_points_at->name;
-
- if (!prefixcmp(head, "refs/heads/"))
- head += 11;
-
- /* Set up the initial local branch */
-
- /* Local branch initial value */
+ const char *head = skip_prefix(our_head_points_at->name,
+ "refs/heads/");
update_ref(reflog_msg.buf, "HEAD",
- head_points_at->old_sha1,
+ our_head_points_at->old_sha1,
NULL, 0, DIE_ON_ERR);
-
- strbuf_addstr(&head_ref, branch_top.buf);
- strbuf_addstr(&head_ref, "HEAD");
-
- /* Remote branch link */
- create_symref(head_ref.buf,
- head_points_at->peer_ref->name,
- reflog_msg.buf);
-
install_branch_config(0, head, option_origin,
- head_points_at->name);
+ our_head_points_at->name);
}
} else if (remote_head) {
/* Source had detached HEAD pointing somewhere. */
- if (!option_bare)
+ if (!option_bare) {
update_ref(reflog_msg.buf, "HEAD",
remote_head->old_sha1,
NULL, REF_NODEREF, DIE_ON_ERR);
+ our_head_points_at = remote_head;
+ }
} else {
/* Nothing to checkout out */
if (!option_no_checkout)
@@ -597,7 +616,7 @@ int cmd_clone(int argc, const char **argv, const char *prefix)
opts.src_index = &the_index;
opts.dst_index = &the_index;
- tree = parse_tree_indirect(remote_head->old_sha1);
+ tree = parse_tree_indirect(our_head_points_at->old_sha1);
parse_tree(tree);
init_tree_desc(&t, tree->buffer, tree->size);
unpack_trees(1, &t, &opts);