mirrors/git
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

chunk-format.h: extract oid_version()

Browse Source 
There are three definitions of an identical function which converts
`the_hash_algo` into either 1 (for SHA-1) or 2 (for SHA-256). There is a
copy of this function for writing both the commit-graph and
multi-pack-index file, and another inline definition used to write the
.rev header.

Consolidate these into a single definition in chunk-format.h. It's not
clear that this is the best header to define this function in, but it
should do for now.

(Worth noting, the .rev caller expects a 4-byte unsigned, but the other
two callers work with a single unsigned byte. The consolidated version
uses the latter type, and lets the compiler widen it when required).

Another caller will be added in a subsequent patch.

Signed-off-by: Taylor Blau <me@ttaylorr.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This commit is contained in:
Taylor Blau
2022-05-20 19:17:41 -04:00
committed by Junio C Hamano
parent 1c573cdd72
commit d9fef9d90d
5 changed files with 23 additions and 43 deletions
Download Patch File Download Diff File Expand all files Collapse all files

18
commit-graph.c
View File

@ -193,18 +193,6 @@ char *get_commit_graph_chain_filename(struct object_directory *odb)
return xstrfmt("%s/info/commit-graphs/commit-graph-chain", odb->path);
}
static uint8_t oid_version(void)
{
switch (hash_algo_by_ptr(the_hash_algo)) {
case GIT_HASH_SHA1:
return 1;
case GIT_HASH_SHA256:
return 2;
default:
die(_("invalid hash version"));
}
}
static struct commit_graph *alloc_commit_graph(void)
{
struct commit_graph *g = xcalloc(1, sizeof(*g));
@ -365,9 +353,9 @@ struct commit_graph *parse_commit_graph(struct repository *r,
}
hash_version = *(unsigned char*)(data + 5);
if (hash_version != oid_version()) {
if (hash_version != oid_version(the_hash_algo)) {
error(_("commit-graph hash version %X does not match version %X"),
hash_version, oid_version());
hash_version, oid_version(the_hash_algo));
return NULL;
}
@ -1921,7 +1909,7 @@ static int write_commit_graph_file(struct write_commit_graph_context *ctx)
hashwrite_be32(f, GRAPH_SIGNATURE);
hashwrite_u8(f, GRAPH_VERSION);
hashwrite_u8(f, oid_version());
hashwrite_u8(f, oid_version(the_hash_algo));
hashwrite_u8(f, get_num_chunks(cf));
hashwrite_u8(f, ctx->num_commit_graphs_after - 1);