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filter_refs(): delete matched refs from sought list

Remove any references that are available from the remote from the
sought list (rather than overwriting their names with NUL characters,
as previously).  Mark matching entries by writing a non-NULL pointer
to string_list_item::util during the iteration, then use
filter_string_list() later to filter out the entries that have been
marked.

Document this aspect of fetch_pack() in a comment in the header file.
(More documentation is obviously still needed.)

Signed-off-by: Michael Haggerty <mhagger@alum.mit.edu>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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commit 4ba159996f6c1b0d6dd0a2a8bd9d6f5b342a4aa5 1 parent 4c58f13
Michael Haggerty mhagger authored committed
Showing with 25 additions and 15 deletions.
  1. +15 −8 builtin/fetch-pack.c
  2. +7 −0 fetch-pack.h
  3. +3 −7 transport.c
23 builtin/fetch-pack.c
View
@@ -525,6 +525,16 @@ static void mark_recent_complete_commits(unsigned long cutoff)
}
}
+static int non_matching_ref(struct string_list_item *item, void *unused)
+{
+ if (item->util) {
+ item->util = NULL;
+ return 0;
+ }
+ else
+ return 1;
+}
+
static void filter_refs(struct ref **refs, struct string_list *sought)
{
struct ref **return_refs;
@@ -566,7 +576,7 @@ static void filter_refs(struct ref **refs, struct string_list *sought)
break;
else if (cmp == 0) { /* definitely have it */
return_refs[sought_pos] = ref;
- sought->items[sought_pos++].string[0] = '\0';
+ sought->items[sought_pos++].util = "matched";
break;
}
else /* might have it; keep looking */
@@ -590,6 +600,7 @@ static void filter_refs(struct ref **refs, struct string_list *sought)
}
if (return_refs != fastarray)
free(return_refs);
+ filter_string_list(sought, 0, non_matching_ref, NULL);
}
*refs = newlist;
}
@@ -1040,13 +1051,9 @@ int cmd_fetch_pack(int argc, const char **argv, const char *prefix)
* Otherwise, 'git fetch remote no-such-ref' would
* silently succeed without issuing an error.
*/
- for (i = 0; i < sought.nr; i++) {
- char *s = sought.items[i].string;
- if (s && s[0]) {
- error("no such remote ref %s", s);
- ret = 1;
- }
- }
+ for (i = 0; i < sought.nr; i++)
+ error("no such remote ref %s", sought.items[i].string);
+ ret = 1;
}
while (ref) {
printf("%s %s\n",
7 fetch-pack.h
View
@@ -19,6 +19,13 @@ struct fetch_pack_args {
stateless_rpc:1;
};
+/*
+ * sought contains the full names of remote references that should be
+ * updated from. On return, the names that were found on the remote
+ * will have been removed from the list. The util members of the
+ * string_list_items are used internally; they must be NULL on entry
+ * (and will be NULL on exit).
+ */
struct ref *fetch_pack(struct fetch_pack_args *args,
int fd[], struct child_process *conn,
const struct ref *ref,
10 transport.c
View
@@ -518,8 +518,7 @@ static int fetch_refs_via_pack(struct transport *transport,
int nr_heads, struct ref **to_fetch)
{
struct git_transport_data *data = transport->data;
- struct string_list orig_sought = STRING_LIST_INIT_DUP;
- struct string_list sought = STRING_LIST_INIT_NODUP;
+ struct string_list sought = STRING_LIST_INIT_DUP;
const struct ref *refs;
char *dest = xstrdup(transport->url);
struct fetch_pack_args args;
@@ -537,10 +536,8 @@ static int fetch_refs_via_pack(struct transport *transport,
args.no_progress = !transport->progress;
args.depth = data->options.depth;
- for (i = 0; i < nr_heads; i++) {
- string_list_append(&orig_sought, to_fetch[i]->name);
- string_list_append(&sought, orig_sought.items[orig_sought.nr - 1].string);
- }
+ for (i = 0; i < nr_heads; i++)
+ string_list_append(&sought, to_fetch[i]->name);
if (!data->got_remote_heads) {
connect_setup(transport, 0, 0);
@@ -561,7 +558,6 @@ static int fetch_refs_via_pack(struct transport *transport,
free_refs(refs_tmp);
string_list_clear(&sought, 0);
- string_list_clear(&orig_sought, 0);
free(dest);
return (refs ? 0 : -1);
}
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