Function write_midx_internal

midx-write.c:1254–1848

};

static int write_midx_internal(struct write_midx_opts *opts)
{
	struct repository *r = opts->source->odb->repo;
	struct strbuf midx_name = STRBUF_INIT;
	unsigned char midx_hash[GIT_MAX_RAWSZ];
	uint32_t start_pack;
	struct hashfile *f = NULL;
	struct lock_file lk = LOCK_INIT;
	struct tempfile *incr;
	struct write_midx_context ctx = {
		.preferred_pack_idx = NO_PREFERRED_PACK,
	 };
	struct multi_pack_index *midx_to_free = NULL;
	int bitmapped_packs_concat_len = 0;
	int pack_name_concat_len = 0;
	int dropped_packs = 0;
	int result = -1;
	struct strvec keep_hashes = STRVEC_INIT;
	struct chunkfile *cf;

	trace2_region_enter("midx", "write_midx_internal", r);

	ctx.repo = r;
	ctx.source = opts->source;

	ctx.version = ((opts->flags & MIDX_WRITE_COMPACT)
		       ? MIDX_VERSION_V2
		       : MIDX_VERSION_V1);
	repo_config_get_int(ctx.repo, "midx.version", &ctx.version);
	if (ctx.version != MIDX_VERSION_V1 && ctx.version != MIDX_VERSION_V2)
		die(_("unknown MIDX version: %d"), ctx.version);

	ctx.incremental = !!(opts->flags & MIDX_WRITE_INCREMENTAL);
	ctx.compact = !!(opts->flags & MIDX_WRITE_COMPACT);

	if (ctx.compact) {
		if (ctx.version != MIDX_VERSION_V2)
			die(_("cannot perform MIDX compaction with v1 format"));
		if (!opts->compact_from)
			BUG("expected non-NULL 'from' MIDX during compaction");
		if (!opts->compact_to)
			BUG("expected non-NULL 'to' MIDX during compaction");

		ctx.compact_from = opts->compact_from;
		ctx.compact_to = opts->compact_to;
	}

	if (ctx.incremental)
		strbuf_addf(&midx_name,
			    "%s/pack/multi-pack-index.d/tmp_midx_XXXXXX",
			    opts->source->path);
	else
		get_midx_filename(opts->source, &midx_name);
	if (safe_create_leading_directories(r, midx_name.buf))
		die_errno(_("unable to create leading directories of %s"),
			  midx_name.buf);

	if (!opts->packs_to_include || ctx.incremental) {