int cmd_clone(int argc, const char **argv, const char *prefix)
{
int is_bundle = 0, is_local;
struct stat buf;
const char *repo_name, *repo, *work_tree, *git_dir;
char *path, *dir;
int dest_exists;
const struct ref *refs, *remote_head;
const struct ref *remote_head_points_at;
const struct ref *our_head_points_at;
struct ref *mapped_refs;
const struct ref *ref;
struct strbuf key = STRBUF_INIT, value = STRBUF_INIT;
struct strbuf branch_top = STRBUF_INIT, reflog_msg = STRBUF_INIT;
struct transport *transport = NULL;
const char *src_ref_prefix = "refs/heads/";
struct remote *remote;
int err = 0, complete_refs_before_fetch = 1;
struct refspec *refspec;
const char *fetch_pattern;
packet_trace_identity("clone");
argc = parse_options(argc, argv, prefix, builtin_clone_options,
builtin_clone_usage, 0);
if (argc > 2)
usage_msg_opt(_("Too many arguments."),
builtin_clone_usage, builtin_clone_options);
if (argc == 0)
usage_msg_opt(_("You must specify a repository to clone."),
builtin_clone_usage, builtin_clone_options);
if (option_single_branch == -1)
option_single_branch = option_depth ? 1 : 0;
if (option_mirror)
option_bare = 1;
if (option_bare) {
if (option_origin)
die(_("--bare and --origin %s options are incompatible."),
option_origin);
if (real_git_dir)
die(_("--bare and --separate-git-dir are incompatible."));
option_no_checkout = 1;
}
if (!option_origin)
option_origin = "origin";
repo_name = argv[0];
path = get_repo_path(repo_name, &is_bundle);
if (path)
repo = xstrdup(absolute_path(repo_name));
else if (!strchr(repo_name, ':'))
die(_("repository '%s' does not exist"), repo_name);
else
repo = repo_name;
/* no need to be strict, transport_set_option() will validate it again */
if (option_depth && atoi(option_depth) < 1)
die(_("depth %s is not a positive number"), option_depth);
if (argc == 2)
dir = xstrdup(argv[1]);
else
dir = guess_dir_name(repo_name, is_bundle, option_bare);
strip_trailing_slashes(dir);
dest_exists = !stat(dir, &buf);
if (dest_exists && !is_empty_dir(dir))
die(_("destination path '%s' already exists and is not "
"an empty directory."), dir);
strbuf_addf(&reflog_msg, "clone: from %s", repo);
if (option_bare)
work_tree = NULL;
else {
work_tree = getenv("GIT_WORK_TREE");
if (work_tree && !stat(work_tree, &buf))
die(_("working tree '%s' already exists."), work_tree);
}
if (option_bare || work_tree)
git_dir = xstrdup(dir);
else {
work_tree = dir;
git_dir = mkpathdup("%s/.git", dir);
}
if (!option_bare) {
junk_work_tree = work_tree;
if (safe_create_leading_directories_const(work_tree) < 0)
die_errno(_("could not create leading directories of '%s'"),
work_tree);
if (!dest_exists && mkdir(work_tree, 0777))
die_errno(_("could not create work tree dir '%s'."),
work_tree);
set_git_work_tree(work_tree);
}
junk_git_dir = git_dir;
atexit(remove_junk);
sigchain_push_common(remove_junk_on_signal);
if (safe_create_leading_directories_const(git_dir) < 0)
die(_("could not create leading directories of '%s'"), git_dir);
set_git_dir_init(git_dir, real_git_dir, 0);
if (real_git_dir) {
git_dir = real_git_dir;
junk_git_dir = real_git_dir;
}
if (0 <= option_verbosity) {
if (option_bare)
fprintf(stderr, _("Cloning into bare repository '%s'...\n"), dir);
else
fprintf(stderr, _("Cloning into '%s'...\n"), dir);
}
init_db(option_template, INIT_DB_QUIET);
write_config(&option_config);
git_config(git_default_config, NULL);
if (option_bare) {
if (option_mirror)
src_ref_prefix = "refs/";
strbuf_addstr(&branch_top, src_ref_prefix);
git_config_set("core.bare", "true");
} else {
strbuf_addf(&branch_top, "refs/remotes/%s/", option_origin);
}
strbuf_addf(&value, "+%s*:%s*", src_ref_prefix, branch_top.buf);
strbuf_addf(&key, "remote.%s.url", option_origin);
git_config_set(key.buf, repo);
strbuf_reset(&key);
if (option_reference.nr)
setup_reference();
else if (option_dissociate) {
warning(_("--dissociate given, but there is no --reference"));
option_dissociate = 0;
}
fetch_pattern = value.buf;
refspec = parse_fetch_refspec(1, &fetch_pattern);
strbuf_reset(&value);
remote = remote_get(option_origin);
transport = transport_get(remote, remote->url[0]);
path = get_repo_path(remote->url[0], &is_bundle);
is_local = option_local != 0 && path && !is_bundle;
if (is_local) {
if (option_depth)
warning(_("--depth is ignored in local clones; use file:// instead."));
if (!access(mkpath("%s/shallow", path), F_OK)) {
if (option_local > 0)
warning(_("source repository is shallow, ignoring --local"));
is_local = 0;
}
}
if (option_local > 0 && !is_local)
warning(_("--local is ignored"));
transport->cloning = 1;
if (!transport->get_refs_list || (!is_local && !transport->fetch))
die(_("Don't know how to clone %s"), transport->url);
transport_set_option(transport, TRANS_OPT_KEEP, "yes");
if (option_depth)
transport_set_option(transport, TRANS_OPT_DEPTH,
option_depth);
if (option_single_branch)
transport_set_option(transport, TRANS_OPT_FOLLOWTAGS, "1");
transport_set_verbosity(transport, option_verbosity, option_progress);
if (option_upload_pack)
transport_set_option(transport, TRANS_OPT_UPLOADPACK,
option_upload_pack);
if (transport->smart_options && !option_depth)
transport->smart_options->check_self_contained_and_connected = 1;
refs = transport_get_remote_refs(transport);
if (refs) {
mapped_refs = wanted_peer_refs(refs, refspec);
/*
* transport_get_remote_refs() may return refs with null sha-1
* in mapped_refs (see struct transport->get_refs_list
* comment). In that case we need fetch it early because
* remote_head code below relies on it.
*
* for normal clones, transport_get_remote_refs() should
* return reliable ref set, we can delay cloning until after
* remote HEAD check.
*/
for (ref = refs; ref; ref = ref->next)
if (is_null_sha1(ref->old_sha1)) {
complete_refs_before_fetch = 0;
break;
}
if (!is_local && !complete_refs_before_fetch)
transport_fetch_refs(transport, mapped_refs);
remote_head = find_ref_by_name(refs, "HEAD");
remote_head_points_at =
guess_remote_head(remote_head, mapped_refs, 0);
if (option_branch) {
our_head_points_at =
find_remote_branch(mapped_refs, option_branch);
if (!our_head_points_at)
die(_("Remote branch %s not found in upstream %s"),
option_branch, option_origin);
}
else
our_head_points_at = remote_head_points_at;
}
else {
if (option_branch)
die(_("Remote branch %s not found in upstream %s"),
option_branch, option_origin);
warning(_("You appear to have cloned an empty repository."));
mapped_refs = NULL;
our_head_points_at = NULL;
remote_head_points_at = NULL;
remote_head = NULL;
option_no_checkout = 1;
if (!option_bare)
install_branch_config(0, "master", option_origin,
"refs/heads/master");
}
write_refspec_config(src_ref_prefix, our_head_points_at,
remote_head_points_at, &branch_top);
if (is_local)
clone_local(path, git_dir);
else if (refs && complete_refs_before_fetch)
transport_fetch_refs(transport, mapped_refs);
update_remote_refs(refs, mapped_refs, remote_head_points_at,
branch_top.buf, reflog_msg.buf, transport, !is_local);
update_head(our_head_points_at, remote_head, reflog_msg.buf);
transport_unlock_pack(transport);
transport_disconnect(transport);
if (option_dissociate)
dissociate_from_references();
junk_mode = JUNK_LEAVE_REPO;
err = checkout();
strbuf_release(&reflog_msg);
strbuf_release(&branch_top);
strbuf_release(&key);
strbuf_release(&value);
junk_mode = JUNK_LEAVE_ALL;
free(refspec);
return err;
}
int cmd_clone(int argc, const char **argv, const char *prefix)
{
int is_bundle = 0, is_local;
struct stat buf;
const char *repo_name, *repo, *work_tree, *git_dir;
char *path, *dir;
int dest_exists;
const struct ref *refs, *remote_head;
const struct ref *remote_head_points_at;
const struct ref *our_head_points_at;
struct ref *mapped_refs;
struct strbuf key = STRBUF_INIT, value = STRBUF_INIT;
struct strbuf branch_top = STRBUF_INIT, reflog_msg = STRBUF_INIT;
struct transport *transport = NULL;
char *src_ref_prefix = "refs/heads/";
int err = 0;
struct refspec *refspec;
const char *fetch_pattern;
junk_pid = getpid();
packet_trace_identity("clone");
argc = parse_options(argc, argv, prefix, builtin_clone_options,
builtin_clone_usage, 0);
if (argc > 2)
usage_msg_opt(_("Too many arguments."),
builtin_clone_usage, builtin_clone_options);
if (argc == 0)
usage_msg_opt(_("You must specify a repository to clone."),
builtin_clone_usage, builtin_clone_options);
if (option_mirror)
option_bare = 1;
if (option_bare) {
if (option_origin)
die(_("--bare and --origin %s options are incompatible."),
option_origin);
option_no_checkout = 1;
}
if (!option_origin)
option_origin = "origin";
repo_name = argv[0];
path = get_repo_path(repo_name, &is_bundle);
if (path)
repo = xstrdup(absolute_path(repo_name));
else if (!strchr(repo_name, ':'))
die(_("repository '%s' does not exist"), repo_name);
else
repo = repo_name;
is_local = path && !is_bundle;
if (is_local && option_depth)
warning(_("--depth is ignored in local clones; use file:// instead."));
if (argc == 2)
dir = xstrdup(argv[1]);
else
dir = guess_dir_name(repo_name, is_bundle, option_bare);
strip_trailing_slashes(dir);
dest_exists = !stat(dir, &buf);
if (dest_exists && !is_empty_dir(dir))
die(_("destination path '%s' already exists and is not "
"an empty directory."), dir);
strbuf_addf(&reflog_msg, "clone: from %s", repo);
if (option_bare)
work_tree = NULL;
else {
work_tree = getenv("GIT_WORK_TREE");
if (work_tree && !stat(work_tree, &buf))
die(_("working tree '%s' already exists."), work_tree);
}
if (option_bare || work_tree)
git_dir = xstrdup(dir);
else {
work_tree = dir;
git_dir = xstrdup(mkpath("%s/.git", dir));
}
if (!option_bare) {
junk_work_tree = work_tree;
if (safe_create_leading_directories_const(work_tree) < 0)
die_errno(_("could not create leading directories of '%s'"),
work_tree);
if (!dest_exists && mkdir(work_tree, 0755))
die_errno(_("could not create work tree dir '%s'."),
work_tree);
set_git_work_tree(work_tree);
}
junk_git_dir = git_dir;
atexit(remove_junk);
sigchain_push_common(remove_junk_on_signal);
setenv(CONFIG_ENVIRONMENT, mkpath("%s/config", git_dir), 1);
if (safe_create_leading_directories_const(git_dir) < 0)
die(_("could not create leading directories of '%s'"), git_dir);
set_git_dir_init(git_dir, real_git_dir, 0);
if (real_git_dir)
git_dir = real_git_dir;
if (0 <= option_verbosity) {
if (option_bare)
printf(_("Cloning into bare repository %s...\n"), dir);
else
printf(_("Cloning into %s...\n"), dir);
}
init_db(option_template, INIT_DB_QUIET);
write_config(&option_config);
/*
* At this point, the config exists, so we do not need the
* environment variable. We actually need to unset it, too, to
* re-enable parsing of the global configs.
*/
unsetenv(CONFIG_ENVIRONMENT);
git_config(git_default_config, NULL);
if (option_bare) {
if (option_mirror)
src_ref_prefix = "refs/";
strbuf_addstr(&branch_top, src_ref_prefix);
git_config_set("core.bare", "true");
} else {
strbuf_addf(&branch_top, "refs/remotes/%s/", option_origin);
}
strbuf_addf(&value, "+%s*:%s*", src_ref_prefix, branch_top.buf);
if (option_mirror || !option_bare) {
/* Configure the remote */
strbuf_addf(&key, "remote.%s.fetch", option_origin);
git_config_set_multivar(key.buf, value.buf, "^$", 0);
strbuf_reset(&key);
if (option_mirror) {
strbuf_addf(&key, "remote.%s.mirror", option_origin);
git_config_set(key.buf, "true");
strbuf_reset(&key);
}
}
strbuf_addf(&key, "remote.%s.url", option_origin);
git_config_set(key.buf, repo);
strbuf_reset(&key);
if (option_reference.nr)
setup_reference();
fetch_pattern = value.buf;
refspec = parse_fetch_refspec(1, &fetch_pattern);
strbuf_reset(&value);
if (is_local) {
refs = clone_local(path, git_dir);
mapped_refs = wanted_peer_refs(refs, refspec);
} else {
struct remote *remote = remote_get(option_origin);
transport = transport_get(remote, remote->url[0]);
if (!transport->get_refs_list || !transport->fetch)
die(_("Don't know how to clone %s"), transport->url);
transport_set_option(transport, TRANS_OPT_KEEP, "yes");
if (option_depth)
transport_set_option(transport, TRANS_OPT_DEPTH,
option_depth);
transport_set_verbosity(transport, option_verbosity, option_progress);
if (option_upload_pack)
transport_set_option(transport, TRANS_OPT_UPLOADPACK,
option_upload_pack);
refs = transport_get_remote_refs(transport);
if (refs) {
mapped_refs = wanted_peer_refs(refs, refspec);
transport_fetch_refs(transport, mapped_refs);
}
}
if (refs) {
clear_extra_refs();
write_remote_refs(mapped_refs);
remote_head = find_ref_by_name(refs, "HEAD");
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."));
our_head_points_at = NULL;
remote_head_points_at = NULL;
remote_head = NULL;
option_no_checkout = 1;
if (!option_bare)
install_branch_config(0, "master", option_origin,
"refs/heads/master");
}
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) {
const char *head = skip_prefix(our_head_points_at->name,
"refs/heads/");
update_ref(reflog_msg.buf, "HEAD",
our_head_points_at->old_sha1,
NULL, 0, DIE_ON_ERR);
install_branch_config(0, head, option_origin,
our_head_points_at->name);
}
} else if (remote_head) {
/* Source had detached HEAD pointing somewhere. */
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)
warning(_("remote HEAD refers to nonexistent ref, "
"unable to checkout.\n"));
option_no_checkout = 1;
}
if (transport) {
transport_unlock_pack(transport);
transport_disconnect(transport);
}
if (!option_no_checkout) {
struct lock_file *lock_file = xcalloc(1, sizeof(struct lock_file));
struct unpack_trees_options opts;
struct tree *tree;
struct tree_desc t;
int fd;
/* We need to be in the new work tree for the checkout */
setup_work_tree();
fd = hold_locked_index(lock_file, 1);
memset(&opts, 0, sizeof opts);
opts.update = 1;
opts.merge = 1;
opts.fn = oneway_merge;
opts.verbose_update = (option_verbosity > 0);
opts.src_index = &the_index;
opts.dst_index = &the_index;
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);
if (write_cache(fd, active_cache, active_nr) ||
commit_locked_index(lock_file))
die(_("unable to write new index file"));
err |= run_hook(NULL, "post-checkout", sha1_to_hex(null_sha1),
sha1_to_hex(our_head_points_at->old_sha1), "1",
NULL);
if (!err && option_recursive)
err = run_command_v_opt(argv_submodule, RUN_GIT_CMD);
}
strbuf_release(&reflog_msg);
strbuf_release(&branch_top);
strbuf_release(&key);
strbuf_release(&value);
junk_pid = 0;
return err;
}
