midx-write.c: extract fill_pack_from_midx()

When filling packs from an existing MIDX, `fill_packs_from_midx()`
handles preparing a MIDX'd pack, and reading out its pack name from the
existing MIDX.

MIDX compaction will want to perform an identical operation, though the
caller will look quite different than `fill_packs_from_midx()`. To
reduce any future code duplication, extract `fill_pack_from_midx()`
from `fill_packs_from_midx()` to prepare to call our new helper function
in a future change.

Signed-off-by: Taylor Blau <me@ttaylorr.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This commit is contained in:
Taylor Blau 2025-12-06 15:31:34 -05:00 committed by Junio C Hamano
parent 363485a311
commit 9ced91c83b

View File

@ -910,6 +910,21 @@ cleanup:
return ret;
}
static int fill_pack_from_midx(struct pack_info *info,
struct multi_pack_index *m,
uint32_t pack_int_id)
{
if (prepare_midx_pack(m, pack_int_id))
return error(_("could not load pack %d"), pack_int_id);
fill_pack_info(info,
m->packs[pack_int_id - m->num_packs_in_base],
m->pack_names[pack_int_id - m->num_packs_in_base],
pack_int_id);
return 0;
}
static int fill_packs_from_midx(struct write_midx_context *ctx)
{
struct multi_pack_index *m;
@ -918,13 +933,13 @@ static int fill_packs_from_midx(struct write_midx_context *ctx)
uint32_t i;
for (i = 0; i < m->num_packs; i++) {
if (prepare_midx_pack(m, m->num_packs_in_base + i))
return error(_("could not load pack"));
ALLOC_GROW(ctx->info, ctx->nr + 1, ctx->alloc);
fill_pack_info(&ctx->info[ctx->nr++], m->packs[i],
m->pack_names[i],
m->num_packs_in_base + i);
if (fill_pack_from_midx(&ctx->info[ctx->nr], m,
m->num_packs_in_base + i) < 0)
return -1;
ctx->nr++;
}
}
return 0;