From defba632c1e07eed360a8ba23df9103bbd1b7f9e Mon Sep 17 00:00:00 2001 From: Taylor Blau Date: Wed, 29 May 2024 18:55:42 -0400 Subject: [PATCH] midx: replace `get_midx_rev_filename()` with a generic helper 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 Signed-off-by: Junio C Hamano --- midx.c | 10 ++++++---- midx.h | 6 +++++- pack-revindex.c | 3 ++- 3 files changed, 13 insertions(+), 6 deletions(-) diff --git a/midx.c b/midx.c index 6f07de3688..bc4797196f 100644 --- a/midx.c +++ b/midx.c @@ -25,13 +25,15 @@ const unsigned char *get_midx_checksum(struct multi_pack_index *m) void get_midx_filename(struct strbuf *out, const char *object_dir) { - strbuf_addf(out, "%s/pack/multi-pack-index", object_dir); + get_midx_filename_ext(out, object_dir, NULL, NULL); } -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) { - get_midx_filename(out, m->object_dir); - strbuf_addf(out, "-%s.rev", hash_to_hex(get_midx_checksum(m))); + strbuf_addf(out, "%s/pack/multi-pack-index", object_dir); + 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,