builtin/cat-file: support "blob:none" objects filter

Implement support for the "blob:none" filter in git-cat-file(1), which
causes us to omit all blobs.

Note that this new filter requires us to read the object type via
`oid_object_info_extended()` in `batch_object_write()`. But as we try to
optimize away reading objects from the database the `data->info.typep`
pointer may not be set. We thus have to adapt the logic to conditionally
set the pointer in cases where the filter is given.

Signed-off-by: Patrick Steinhardt <ps@pks.im>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This commit is contained in:
Patrick Steinhardt
2025-04-02 13:13:39 +02:00
committed by Junio C Hamano
parent eb83e4c64b
commit 3794e9bf98
3 changed files with 62 additions and 4 deletions

View File

@@ -482,7 +482,8 @@ static void batch_object_write(const char *obj_name,
if (!data->skip_object_info) {
int ret;
if (use_mailmap)
if (use_mailmap ||
opt->objects_filter.choice == LOFC_BLOB_NONE)
data->info.typep = &data->type;
if (pack)
@@ -500,6 +501,14 @@ static void batch_object_write(const char *obj_name,
switch (opt->objects_filter.choice) {
case LOFC_DISABLED:
break;
case LOFC_BLOB_NONE:
if (data->type == OBJ_BLOB) {
if (!opt->all_objects)
report_object_status(opt, obj_name,
&data->oid, "excluded");
return;
}
break;
default:
BUG("unsupported objects filter");
}
@@ -1039,6 +1048,10 @@ int cmd_cat_file(int argc,
switch (batch.objects_filter.choice) {
case LOFC_DISABLED:
break;
case LOFC_BLOB_NONE:
if (!batch.enabled)
usage(_("objects filter only supported in batch mode"));
break;
default:
usagef(_("objects filter not supported: '%s'"),
list_object_filter_config_name(batch.objects_filter.choice));