midx: teach midx_contains_pack() about incremental MIDXs

Now that the `midx_contains_pack()` versus `midx_locate_pack()` debacle
has been cleaned up, teach the former about how to operate in an
incremental MIDX-aware world in a similar fashion as in previous
commits.

Instead of using either of the two `midx_for_object()` or
`midx_for_pack()` helpers, this function is split into two: one that
determines whether a pack is contained in a single MIDX, and another
which calls the former in a loop over all MIDXs.

This approach does not require that we change any of the implementation
in what is now `midx_contains_pack_1()` as it still operates over a
single MIDX.

Signed-off-by: Taylor Blau <me@ttaylorr.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This commit is contained in:
Taylor Blau
2024-08-06 11:37:46 -04:00
committed by Junio C Hamano
parent 5d0ee3f675
commit 853165c50a

11
midx.c
View File

@ -466,7 +466,8 @@ int cmp_idx_or_pack_name(const char *idx_or_pack_name,
return strcmp(idx_or_pack_name, idx_name);
}
int midx_contains_pack(struct multi_pack_index *m, const char *idx_or_pack_name)
static int midx_contains_pack_1(struct multi_pack_index *m,
const char *idx_or_pack_name)
{
uint32_t first = 0, last = m->num_packs;
@ -489,6 +490,14 @@ int midx_contains_pack(struct multi_pack_index *m, const char *idx_or_pack_name)
return 0;
}
int midx_contains_pack(struct multi_pack_index *m, const char *idx_or_pack_name)
{
for (; m; m = m->base_midx)
if (midx_contains_pack_1(m, idx_or_pack_name))
return 1;
return 0;
}
int midx_preferred_pack(struct multi_pack_index *m, uint32_t *pack_int_id)
{
if (m->preferred_pack_idx == -1) {