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-rw-r--r--builtin/clone.c52
-rw-r--r--builtin/pack-objects.c9
-rw-r--r--builtin/receive-pack.c51
3 files changed, 77 insertions, 35 deletions
diff --git a/builtin/clone.c b/builtin/clone.c
index 86db95473..9dcc5fe77 100644
--- a/builtin/clone.c
+++ b/builtin/clone.c
@@ -37,7 +37,7 @@ static const char * const builtin_clone_usage[] = {
NULL
};
-static int option_no_checkout, option_bare, option_mirror;
+static int option_no_checkout, option_bare, option_mirror, option_single_branch = -1;
static int option_local, option_no_hardlinks, option_shared, option_recursive;
static char *option_template, *option_depth;
static char *option_origin = NULL;
@@ -48,6 +48,7 @@ static int option_verbosity;
static int option_progress;
static struct string_list option_config;
static struct string_list option_reference;
+static const char *src_ref_prefix = "refs/heads/";
static int opt_parse_reference(const struct option *opt, const char *arg, int unset)
{
@@ -92,6 +93,8 @@ static struct option builtin_clone_options[] = {
"path to git-upload-pack on the remote"),
OPT_STRING(0, "depth", &option_depth, "depth",
"create a shallow clone of that depth"),
+ OPT_BOOL(0, "single-branch", &option_single_branch,
+ "clone only one branch, HEAD or --branch"),
OPT_STRING(0, "separate-git-dir", &real_git_dir, "gitdir",
"separate git dir from working tree"),
OPT_STRING_LIST('c', "config", &option_config, "key=value",
@@ -427,8 +430,28 @@ static struct ref *wanted_peer_refs(const struct ref *refs,
struct ref *local_refs = head;
struct ref **tail = head ? &head->next : &local_refs;
- get_fetch_map(refs, refspec, &tail, 0);
- if (!option_mirror)
+ if (option_single_branch) {
+ struct ref *remote_head = NULL;
+
+ if (!option_branch)
+ remote_head = guess_remote_head(head, refs, 0);
+ else {
+ struct strbuf sb = STRBUF_INIT;
+ strbuf_addstr(&sb, src_ref_prefix);
+ strbuf_addstr(&sb, option_branch);
+ remote_head = find_ref_by_name(refs, sb.buf);
+ strbuf_release(&sb);
+ }
+
+ if (!remote_head && option_branch)
+ warning(_("Could not find remote branch %s to clone."),
+ option_branch);
+ else
+ get_fetch_map(remote_head, refspec, &tail, 0);
+ } else
+ get_fetch_map(refs, refspec, &tail, 0);
+
+ if (!option_mirror && !option_single_branch)
get_fetch_map(refs, tag_refspec, &tail, 0);
return local_refs;
@@ -448,6 +471,21 @@ static void write_remote_refs(const struct ref *local_refs)
clear_extra_refs();
}
+static void write_followtags(const struct ref *refs, const char *msg)
+{
+ const struct ref *ref;
+ for (ref = refs; ref; ref = ref->next) {
+ if (prefixcmp(ref->name, "refs/tags/"))
+ continue;
+ if (!suffixcmp(ref->name, "^{}"))
+ continue;
+ if (!has_sha1_file(ref->old_sha1))
+ continue;
+ update_ref(msg, ref->name, ref->old_sha1,
+ NULL, 0, DIE_ON_ERR);
+ }
+}
+
static int write_one_config(const char *key, const char *value, void *data)
{
return git_config_set_multivar(key, value ? value : "true", "^$", 0);
@@ -478,7 +516,6 @@ int cmd_clone(int argc, const char **argv, const char *prefix)
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;
@@ -498,6 +535,9 @@ int cmd_clone(int argc, const char **argv, const char *prefix)
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;
@@ -645,6 +685,8 @@ int cmd_clone(int argc, const char **argv, const char *prefix)
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);
@@ -663,6 +705,8 @@ int cmd_clone(int argc, const char **argv, const char *prefix)
clear_extra_refs();
write_remote_refs(mapped_refs);
+ if (option_single_branch)
+ write_followtags(refs, reflog_msg.buf);
remote_head = find_ref_by_name(refs, "HEAD");
remote_head_points_at =
diff --git a/builtin/pack-objects.c b/builtin/pack-objects.c
index 96c168097..0f2e7b8f5 100644
--- a/builtin/pack-objects.c
+++ b/builtin/pack-objects.c
@@ -1434,11 +1434,16 @@ static int try_delta(struct unpacked *trg, struct unpacked *src,
return -1;
/*
- * We do not bother to try a delta that we discarded
- * on an earlier try, but only when reusing delta data.
+ * We do not bother to try a delta that we discarded on an
+ * earlier try, but only when reusing delta data. Note that
+ * src_entry that is marked as the preferred_base should always
+ * be considered, as even if we produce a suboptimal delta against
+ * it, we will still save the transfer cost, as we already know
+ * the other side has it and we won't send src_entry at all.
*/
if (reuse_delta && trg_entry->in_pack &&
trg_entry->in_pack == src_entry->in_pack &&
+ !src_entry->preferred_base &&
trg_entry->in_pack_type != OBJ_REF_DELTA &&
trg_entry->in_pack_type != OBJ_OFS_DELTA)
return 0;
diff --git a/builtin/receive-pack.c b/builtin/receive-pack.c
index 31d17cf19..fa7448be5 100644
--- a/builtin/receive-pack.c
+++ b/builtin/receive-pack.c
@@ -116,7 +116,7 @@ static int receive_pack_config(const char *var, const char *value, void *cb)
return git_default_config(var, value, cb);
}
-static int show_ref(const char *path, const unsigned char *sha1, int flag, void *cb_data)
+static void show_ref(const char *path, const unsigned char *sha1)
{
if (sent_capabilities)
packet_write(1, "%s %s\n", sha1_to_hex(sha1), path);
@@ -126,10 +126,9 @@ static int show_ref(const char *path, const unsigned char *sha1, int flag, void
" report-status delete-refs side-band-64k quiet",
prefer_ofs_delta ? " ofs-delta" : "");
sent_capabilities = 1;
- return 0;
}
-static int show_ref_cb(const char *path, const unsigned char *sha1, int flag, void *cb_data)
+static int show_ref_cb(const char *path, const unsigned char *sha1, int flag, void *unused)
{
path = strip_namespace(path);
/*
@@ -142,15 +141,33 @@ static int show_ref_cb(const char *path, const unsigned char *sha1, int flag, vo
*/
if (!path)
path = ".have";
- return show_ref(path, sha1, flag, cb_data);
+ show_ref(path, sha1);
+ return 0;
+}
+
+static void show_one_alternate_sha1(const unsigned char sha1[20], void *unused)
+{
+ show_ref(".have", sha1);
+}
+
+static void collect_one_alternate_ref(const struct ref *ref, void *data)
+{
+ struct sha1_array *sa = data;
+ sha1_array_append(sa, ref->old_sha1);
}
static void write_head_info(void)
{
+ struct sha1_array sa = SHA1_ARRAY_INIT;
+ for_each_alternate_ref(collect_one_alternate_ref, &sa);
+ sha1_array_for_each_unique(&sa, show_one_alternate_sha1, NULL);
+ sha1_array_clear(&sa);
for_each_ref(show_ref_cb, NULL);
if (!sent_capabilities)
- show_ref("capabilities^{}", null_sha1, 0, NULL);
+ show_ref("capabilities^{}", null_sha1);
+ /* EOF */
+ packet_flush(1);
}
struct command {
@@ -875,25 +892,6 @@ static int delete_only(struct command *commands)
return 1;
}
-static void add_one_alternate_sha1(const unsigned char sha1[20], void *unused)
-{
- add_extra_ref(".have", sha1, 0);
-}
-
-static void collect_one_alternate_ref(const struct ref *ref, void *data)
-{
- struct sha1_array *sa = data;
- sha1_array_append(sa, ref->old_sha1);
-}
-
-static void add_alternate_refs(void)
-{
- struct sha1_array sa = SHA1_ARRAY_INIT;
- for_each_alternate_ref(collect_one_alternate_ref, &sa);
- sha1_array_for_each_unique(&sa, add_one_alternate_sha1, NULL);
- sha1_array_clear(&sa);
-}
-
int cmd_receive_pack(int argc, const char **argv, const char *prefix)
{
int advertise_refs = 0;
@@ -948,12 +946,7 @@ int cmd_receive_pack(int argc, const char **argv, const char *prefix)
unpack_limit = receive_unpack_limit;
if (advertise_refs || !stateless_rpc) {
- add_alternate_refs();
write_head_info();
- clear_extra_refs();
-
- /* EOF */
- packet_flush(1);
}
if (advertise_refs)
return 0;
generated by cgit v1.2.1 (git 2.18.0) at 2024-09-02 16:05:11 +0000