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filter_refs(): delete matched refs from sought list

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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>
This commit is contained in:
Michael Haggerty 2012-09-09 08:19:43 +02:00 committed by Junio C Hamano
parent 4c58f13ba6
commit 4ba159996f
3 changed files with 25 additions and 15 deletions
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21
builtin/fetch-pack.c
View File

@ -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;
}
@ -1040,14 +1051,10 @@ 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);
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",
sha1_to_hex(ref->old_sha1), ref->name);

7
fetch-pack.h
View File

@ -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 File

@ -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);
}