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Allow git push to delete remote ref.

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This allows you to say

	git send-pack $URL :refs/heads/$branch

to delete the named remote branch.  The refspec $src:$dst means
replace the destination ref with the object known as $src on the
local side, so this is a natural extension to make an empty $src
mean "No object" to delete the target.

Signed-off-by: Junio C Hamano <junkio@cox.net>
This commit is contained in:
Junio C Hamano
2006-11-24 00:26:49 -08:00
parent 634b8d0514
commit d4f694ba89
4 changed files with 84 additions and 23 deletions
Download Patch File Download Diff File Expand all files Collapse all files

41
send-pack.c
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@@ -271,6 +271,7 @@ static int send_pack(int in, int out, int nr_refspec, char **refspec)
int new_refs;
int ret = 0;
int ask_for_status_report = 0;
int allow_deleting_refs = 0;
int expect_status_report = 0;
/* No funny business with the matcher */
@@ -280,6 +281,8 @@ static int send_pack(int in, int out, int nr_refspec, char **refspec)
/* Does the other end support the reporting? */
if (server_supports("report-status"))
ask_for_status_report = 1;
if (server_supports("delete-refs"))
allow_deleting_refs = 1;
/* match them up */
if (!remote_tail)
@@ -299,9 +302,19 @@ static int send_pack(int in, int out, int nr_refspec, char **refspec)
new_refs = 0;
for (ref = remote_refs; ref; ref = ref->next) {
char old_hex[60], *new_hex;
int delete_ref;
if (!ref->peer_ref)
continue;
if (!hashcmp(ref->old_sha1, ref->peer_ref->new_sha1)) {
delete_ref = is_null_sha1(ref->peer_ref->new_sha1);
if (delete_ref && !allow_deleting_refs) {
error("remote does not support deleting refs");
ret = -2;
continue;
}
if (!delete_ref &&
!hashcmp(ref->old_sha1, ref->peer_ref->new_sha1)) {
if (verbose)
fprintf(stderr, "'%s': up-to-date\n", ref->name);
continue;
@@ -321,9 +334,13 @@ static int send_pack(int in, int out, int nr_refspec, char **refspec)
*
* (3) if both new and old are commit-ish, and new is a
* descendant of old, it is OK.
*
* (4) regardless of all of the above, removing :B is
* always allowed.
*/
if (!force_update &&
!delete_ref &&
!is_zero_sha1(ref->old_sha1) &&
!ref->force) {
if (!has_sha1_file(ref->old_sha1) ||
@@ -347,12 +364,8 @@ static int send_pack(int in, int out, int nr_refspec, char **refspec)
}
}
hashcpy(ref->new_sha1, ref->peer_ref->new_sha1);
if (is_zero_sha1(ref->new_sha1)) {
error("cannot happen anymore");
ret = -3;
continue;
}
new_refs++;
if (!delete_ref)
new_refs++;
strcpy(old_hex, sha1_to_hex(ref->old_sha1));
new_hex = sha1_to_hex(ref->new_sha1);
@@ -366,10 +379,16 @@ static int send_pack(int in, int out, int nr_refspec, char **refspec)
else
packet_write(out, "%s %s %s",
old_hex, new_hex, ref->name);
fprintf(stderr, "updating '%s'", ref->name);
if (strcmp(ref->name, ref->peer_ref->name))
fprintf(stderr, " using '%s'", ref->peer_ref->name);
fprintf(stderr, "\n from %s\n to %s\n", old_hex, new_hex);
if (delete_ref)
fprintf(stderr, "deleting '%s'\n", ref->name);
else {
fprintf(stderr, "updating '%s'", ref->name);
if (strcmp(ref->name, ref->peer_ref->name))
fprintf(stderr, " using '%s'",
ref->peer_ref->name);
fprintf(stderr, "\n from %s\n to %s\n",
old_hex, new_hex);
}
}
packet_flush(out);