fetch-pack: put shallow info in output parameter

diff --git a/upload-pack.c b/upload-pack.c
index bacc92bbb6b58180aa65b2edf1cd9b5358c3e1cd..6dd82e5607da442a04e9ad5120145ab36d1eea10 100644 (file)
--- a/upload-pack.c
+++ b/upload-pack.c
@@ -64,6 +64,7 @@ static const char *pack_objects_hook;
 
 static int filter_capability_requested;
 static int allow_filter;
+static int allow_ref_in_want;
 static struct list_objects_filter_options filter_options;
 
 static void reset_timeout(void)
@@ -1075,6 +1076,8 @@ static int upload_pack_config(const char *var, const char *value, void *unused)
                        return git_config_string(&pack_objects_hook, var, value);
        } else if (!strcmp("uploadpack.allowfilter", var)) {
                allow_filter = git_config_bool(var, value);
+       } else if (!strcmp("uploadpack.allowrefinwant", var)) {
+               allow_ref_in_want = git_config_bool(var, value);
        }
        return parse_hide_refs_config(var, value, "uploadpack");
 }
@@ -1114,6 +1117,7 @@ void upload_pack(struct upload_pack_options *options)
 
 struct upload_pack_data {
        struct object_array wants;
+       struct string_list wanted_refs;
        struct oid_array haves;
 
        struct object_array shallows;
@@ -1135,12 +1139,14 @@ struct upload_pack_data {
 static void upload_pack_data_init(struct upload_pack_data *data)
 {
        struct object_array wants = OBJECT_ARRAY_INIT;
+       struct string_list wanted_refs = STRING_LIST_INIT_DUP;
        struct oid_array haves = OID_ARRAY_INIT;
        struct object_array shallows = OBJECT_ARRAY_INIT;
        struct string_list deepen_not = STRING_LIST_INIT_DUP;
 
        memset(data, 0, sizeof(*data));
        data->wants = wants;
+       data->wanted_refs = wanted_refs;
        data->haves = haves;
        data->shallows = shallows;
        data->deepen_not = deepen_not;
@@ -1149,6 +1155,7 @@ static void upload_pack_data_init(struct upload_pack_data *data)
 static void upload_pack_data_clear(struct upload_pack_data *data)
 {
        object_array_clear(&data->wants);
+       string_list_clear(&data->wanted_refs, 1);
        oid_array_clear(&data->haves);
        object_array_clear(&data->shallows);
        string_list_clear(&data->deepen_not, 0);
@@ -1185,6 +1192,34 @@ static int parse_want(const char *line)
        return 0;
 }
 
+static int parse_want_ref(const char *line, struct string_list *wanted_refs)
+{
+       const char *arg;
+       if (skip_prefix(line, "want-ref ", &arg)) {
+               struct object_id oid;
+               struct string_list_item *item;
+               struct object *o;
+
+               if (read_ref(arg, &oid)) {
+                       packet_write_fmt(1, "ERR unknown ref %s", arg);
+                       die("unknown ref %s", arg);
+               }
+
+               item = string_list_append(wanted_refs, arg);
+               item->util = oiddup(&oid);
+
+               o = parse_object_or_die(&oid, arg);
+               if (!(o->flags & WANTED)) {
+                       o->flags |= WANTED;
+                       add_object_array(o, NULL, &want_obj);
+               }
+
+               return 1;
+       }
+
+       return 0;
+}
+
 static int parse_have(const char *line, struct oid_array *haves)
 {
        const char *arg;
@@ -1205,10 +1240,13 @@ static void process_args(struct packet_reader *request,
 {
        while (packet_reader_read(request) != PACKET_READ_FLUSH) {
                const char *arg = request->line;
+               const char *p;
 
                /* process want */
                if (parse_want(arg))
                        continue;
+               if (allow_ref_in_want && parse_want_ref(arg, &data->wanted_refs))
+                       continue;
                /* process have line */
                if (parse_have(arg, &data->haves))
                        continue;
@@ -1251,8 +1289,13 @@ static void process_args(struct packet_reader *request,
                        continue;
                }
 
+               if (allow_filter && skip_prefix(arg, "filter ", &p)) {
+                       parse_list_objects_filter(&filter_options, p);
+                       continue;
+               }
+
                /* ignore unknown lines maybe? */
-               die("unexpect line: '%s'", arg);
+               die("unexpected line: '%s'", arg);
        }
 }
 
@@ -1346,6 +1389,24 @@ static int process_haves_and_send_acks(struct upload_pack_data *data)
        return ret;
 }
 
+static void send_wanted_ref_info(struct upload_pack_data *data)
+{
+       const struct string_list_item *item;
+
+       if (!data->wanted_refs.nr)
+               return;
+
+       packet_write_fmt(1, "wanted-refs\n");
+
+       for_each_string_list_item(item, &data->wanted_refs) {
+               packet_write_fmt(1, "%s %s\n",
+                                oid_to_hex(item->util),
+                                item->string);
+       }
+
+       packet_delim(1);
+}
+
 static void send_shallow_info(struct upload_pack_data *data)
 {
        /* No shallow info needs to be sent */
@@ -1376,6 +1437,8 @@ int upload_pack_v2(struct repository *r, struct argv_array *keys,
        enum fetch_state state = FETCH_PROCESS_ARGS;
        struct upload_pack_data data;
 
+       git_config(upload_pack_config, NULL);
+
        upload_pack_data_init(&data);
        use_sideband = LARGE_PACKET_MAX;
 
@@ -1410,6 +1473,7 @@ int upload_pack_v2(struct repository *r, struct argv_array *keys,
                                state = FETCH_DONE;
                        break;
                case FETCH_SEND_PACK:
+                       send_wanted_ref_info(&data);
                        send_shallow_info(&data);
 
                        packet_write_fmt(1, "packfile\n");
@@ -1428,7 +1492,24 @@ int upload_pack_v2(struct repository *r, struct argv_array *keys,
 int upload_pack_advertise(struct repository *r,
                          struct strbuf *value)
 {
-       if (value)
+       if (value) {
+               int allow_filter_value;
+               int allow_ref_in_want;
+
                strbuf_addstr(value, "shallow");
+
+               if (!repo_config_get_bool(the_repository,
+                                        "uploadpack.allowfilter",
+                                        &allow_filter_value) &&
+                   allow_filter_value)
+                       strbuf_addstr(value, " filter");
+
+               if (!repo_config_get_bool(the_repository,
+                                        "uploadpack.allowrefinwant",
+                                        &allow_ref_in_want) &&
+                   allow_ref_in_want)
+                       strbuf_addstr(value, " ref-in-want");
+       }
+
        return 1;
 }