rebase: allow overriding the maximal length of the generated labels

[thirdparty/git.git] / upload-pack.c

diff --git a/upload-pack.c b/upload-pack.c
index 08633dc1216b8ce0cf994c90bd019ba0696faafe..d3312006a32bebdc67c4395b6468db328b501c86 100644 (file)
--- a/upload-pack.c
+++ b/upload-pack.c
@@ -120,6 +120,7 @@ struct upload_pack_data {
        unsigned allow_ref_in_want : 1;                         /* v2 only */
        unsigned allow_sideband_all : 1;                        /* v2 only */
        unsigned advertise_sid : 1;
+       unsigned sent_capabilities : 1;
 };
 
 static void upload_pack_data_init(struct upload_pack_data *data)
@@ -1206,18 +1207,17 @@ static void format_session_id(struct strbuf *buf, struct upload_pack_data *d) {
                strbuf_addf(buf, " session-id=%s", trace2_session_id());
 }
 
-static int send_ref(const char *refname, const struct object_id *oid,
-                   int flag UNUSED, void *cb_data)
+static void write_v0_ref(struct upload_pack_data *data,
+                       const char *refname, const char *refname_nons,
+                       const struct object_id *oid)
 {
        static const char *capabilities = "multi_ack thin-pack side-band"
                " side-band-64k ofs-delta shallow deepen-since deepen-not"
                " deepen-relative no-progress include-tag multi_ack_detailed";
-       const char *refname_nons = strip_namespace(refname);
        struct object_id peeled;
-       struct upload_pack_data *data = cb_data;
 
        if (mark_our_ref(refname_nons, refname, oid, &data->hidden_refs))
-               return 0;
+               return;
 
        if (capabilities) {
                struct strbuf symref_info = STRBUF_INIT;
@@ -1240,12 +1240,20 @@ static int send_ref(const char *refname, const struct object_id *oid,
                             git_user_agent_sanitized());
                strbuf_release(&symref_info);
                strbuf_release(&session_id);
+               data->sent_capabilities = 1;
        } else {
                packet_fwrite_fmt(stdout, "%s %s\n", oid_to_hex(oid), refname_nons);
        }
        capabilities = NULL;
        if (!peel_iterated_oid(oid, &peeled))
                packet_fwrite_fmt(stdout, "%s %s^{}\n", oid_to_hex(&peeled), refname_nons);
+       return;
+}
+
+static int send_ref(const char *refname, const struct object_id *oid,
+                   int flag UNUSED, void *cb_data)
+{
+       write_v0_ref(cb_data, refname, strip_namespace(refname), oid);
        return 0;
 }
 
@@ -1379,6 +1387,10 @@ void upload_pack(const int advertise_refs, const int stateless_rpc,
                        data.no_done = 1;
                head_ref_namespaced(send_ref, &data);
                for_each_namespaced_ref(send_ref, &data);
+               if (!data.sent_capabilities) {
+                       const char *refname = "capabilities^{}";
+                       write_v0_ref(&data, refname, refname, null_oid());
+               }
                /*
                 * fflush stdout before calling advertise_shallow_grafts because send_ref
                 * uses stdio.