[PATCH 7/8] midx: replace `get_midx_rev_filename()` with a generic helper
- From
Taylor Blau <me@ttaylorr.com>
- Date
- May 23, 2024, 16:38 UTC
- Message-ID
- <f4c0167f437a04943b67d286ebcbbb7e0c5aa39e.1716482279.git.me@ttaylorr.com>
- In-Reply-To
- <cover.1716482279.git.me@ttaylorr.com>
Commit f894081deae (pack-revindex: read multi-pack reverse indexes, 2021-03-30) introduced the `get_midx_rev_filename()` helper (later modified by commit 60980aed786 (midx.c: write MIDX filenames to strbuf, 2021-10-26)).
This function returns the location of the classic ".rev" files we used to write for MIDXs (prior to 95e8383bac1 (midx.c: make changing the preferred pack safe, 2022-01-25)), which is always of the form:
$GIT_DIR/objects/pack/multi-pack-index-$HASH.rev
Replace this function with a generic helper that populates a strbuf with the above form, replacing the ".rev" extension with a caller-provided argument.
This will allow us to remove a similarly-defined function in the pack-bitmap code (used to determine the location of a MIDX .bitmap file) by reimplementing it in terms of `get_midx_filename_ext()`.
Signed-off-by: Taylor Blau <me@ttaylorr.com> --- midx.c | 14 ++++++++------ midx.h | 6 +++++- pack-revindex.c | 3 ++- 3 files changed, 15 insertions(+), 8 deletions(-)
diff --git a/midx.c b/midx.c index 6f07de3688..bc4797196f 100644 --- a/midx.c +++ b/midx.c @@ -24,14 +24,16 @@ const unsigned char *get_midx_checksum(struct multi_pack_index *m) } void get_midx_filename(struct strbuf *out, const char *object_dir) +{ + get_midx_filename_ext(out, object_dir, NULL, NULL); +} + +void get_midx_filename_ext(struct strbuf *out, const char *object_dir, + const unsigned char *hash, const char *ext) { strbuf_addf(out, "%s/pack/multi-pack-index", object_dir); -} - -void get_midx_rev_filename(struct strbuf *out, struct multi_pack_index *m) -{ - get_midx_filename(out, m->object_dir); - strbuf_addf(out, "-%s.rev", hash_to_hex(get_midx_checksum(m))); + if (ext) + strbuf_addf(out, "-%s.%s", hash_to_hex(hash), ext); } static int midx_read_oid_fanout(const unsigned char *chunk_start, diff --git a/midx.h b/midx.h index dc477dff44..8554f2d616 100644 --- a/midx.h +++ b/midx.h @@ -74,9 +74,13 @@ struct multi_pack_index { #define MIDX_WRITE_BITMAP_HASH_CACHE (1 << 3) #define MIDX_WRITE_BITMAP_LOOKUP_TABLE (1 << 4) +#define MIDX_EXT_REV "rev" +#define MIDX_EXT_BITMAP "bitmap" + const unsigned char *get_midx_checksum(struct multi_pack_index *m); void get_midx_filename(struct strbuf *out, const char *object_dir); -void get_midx_rev_filename(struct strbuf *out, struct multi_pack_index *m); +void get_midx_filename_ext(struct strbuf *out, const char *object_dir, + const unsigned char *hash, const char *ext); struct multi_pack_index *load_multi_pack_index(const char *object_dir, int local); int prepare_midx_pack(struct repository *r, struct multi_pack_index *m, uint32_t pack_int_id); diff --git a/pack-revindex.c b/pack-revindex.c index a7624d8be8..fc63aa76a2 100644 --- a/pack-revindex.c +++ b/pack-revindex.c @@ -381,7 +381,8 @@ int load_midx_revindex(struct multi_pack_index *m) trace2_data_string("load_midx_revindex", the_repository, "source", "rev"); - get_midx_rev_filename(&revindex_name, m); + get_midx_filename_ext(&revindex_name, m->object_dir, + get_midx_checksum(m), MIDX_EXT_REV); ret = load_revindex_from_disk(revindex_name.buf, m->num_objects,
-- 2.45.1.217.g9bb58e2bf5a.dirty