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object-file: drop support for writing objects with unknown types

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Since "hash-object --literally" no longer supports objects with unknown
types, there are now no callers of write_object_file_literally() and its
helpers. Let's drop them to simplify the code.

In particular, this gets rid of some ugly copy-and-paste code from
write_object_file_literally(), which is a parallel implementation of
write_object_file(). When the split was originally made, the two weren't
that long, but commits like 63a6745a07 (object-file: update the loose
object map when writing loose objects, 2023-10-01) ended up having to
duplicate some tricky code.

This patch drops all of that duplication and should make things less
error-prone going forward.

Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This commit is contained in:
Jeff King
2025-05-16 00:50:13 -04:00
committed by Junio C Hamano
parent f710fd7b49
commit 141f8c8c05
2 changed files with 6 additions and 80 deletions
Download Patch File Download Diff File Expand all files Collapse all files

81
object-file.c
View File

@@ -130,12 +130,6 @@ int has_loose_object(const struct object_id *oid)
return check_and_freshen(oid, 0);
}
static int format_object_header_literally(char *str, size_t size,
const char *type, size_t objsize)
{
return xsnprintf(str, size, "%s %"PRIuMAX, type, (uintmax_t)objsize) + 1;
}
int format_object_header(char *str, size_t size, enum object_type type,
size_t objsize)
{
@@ -144,7 +138,7 @@ int format_object_header(char *str, size_t size, enum object_type type,
if (!name)
BUG("could not get a type name for 'enum object_type' value %d", type);
return format_object_header_literally(str, size, name, objsize);
return xsnprintf(str, size, "%s %"PRIuMAX, name, (uintmax_t)objsize) + 1;
}
int check_object_signature(struct repository *r, const struct object_id *oid,
@@ -558,17 +552,6 @@ static void write_object_file_prepare(const struct git_hash_algo *algo,
hash_object_body(algo, &c, buf, len, oid, hdr, hdrlen);
}
static void write_object_file_prepare_literally(const struct git_hash_algo *algo,
const void *buf, unsigned long len,
const char *type, struct object_id *oid,
char *hdr, int *hdrlen)
{
struct git_hash_ctx c;
*hdrlen = format_object_header_literally(hdr, *hdrlen, type, len);
hash_object_body(algo, &c, buf, len, oid, hdr, hdrlen);
}
#define CHECK_COLLISION_DEST_VANISHED -2
static int check_collision(const char *source, const char *dest)
@@ -698,21 +681,14 @@ out:
return 0;
}
static void hash_object_file_literally(const struct git_hash_algo *algo,
const void *buf, unsigned long len,
const char *type, struct object_id *oid)
{
char hdr[MAX_HEADER_LEN];
int hdrlen = sizeof(hdr);
write_object_file_prepare_literally(algo, buf, len, type, oid, hdr, &hdrlen);
}
void hash_object_file(const struct git_hash_algo *algo, const void *buf,
unsigned long len, enum object_type type,
struct object_id *oid)
{
hash_object_file_literally(algo, buf, len, type_name(type), oid);
char hdr[MAX_HEADER_LEN];
int hdrlen = sizeof(hdr);
write_object_file_prepare(algo, buf, len, type, oid, hdr, &hdrlen);
}
/* Finalize a file on disk, and close it. */
@@ -1114,53 +1090,6 @@ int write_object_file_flags(const void *buf, unsigned long len,
return 0;
}
int write_object_file_literally(const void *buf, unsigned long len,
const char *type, struct object_id *oid,
unsigned flags)
{
char *header;
struct repository *repo = the_repository;
const struct git_hash_algo *algo = repo->hash_algo;
const struct git_hash_algo *compat = repo->compat_hash_algo;
struct object_id compat_oid;
int hdrlen, status = 0;
int compat_type = -1;
if (compat) {
compat_type = type_from_string_gently(type, -1, 1);
if (compat_type == OBJ_BLOB)
hash_object_file(compat, buf, len, compat_type,
&compat_oid);
else if (compat_type != -1) {
struct strbuf converted = STRBUF_INIT;
convert_object_file(the_repository,
&converted, algo, compat,
buf, len, compat_type, 0);
hash_object_file(compat, converted.buf, converted.len,
compat_type, &compat_oid);
strbuf_release(&converted);
}
}
/* type string, SP, %lu of the length plus NUL must fit this */
hdrlen = strlen(type) + MAX_HEADER_LEN;
header = xmalloc(hdrlen);
write_object_file_prepare_literally(the_hash_algo, buf, len, type,
oid, header, &hdrlen);
if (!(flags & WRITE_OBJECT_FILE_PERSIST))
goto cleanup;
if (freshen_packed_object(oid) || freshen_loose_object(oid))
goto cleanup;
status = write_loose_object(oid, header, hdrlen, buf, len, 0, 0);
if (compat_type != -1)
return repo_add_loose_object_map(repo, oid, &compat_oid);
cleanup:
free(header);
return status;
}
int force_object_loose(const struct object_id *oid, time_t mtime)
{
struct repository *repo = the_repository;

5
object-file.h
View File

@@ -159,7 +159,7 @@ int parse_loose_header(const char *hdr, struct object_info *oi);
enum {
/*
* By default, `write_object_file_literally()` does not actually write
* By default, `write_object_file()` does not actually write
* anything into the object store, but only computes the object ID.
* This flag changes that so that the object will be written as a loose
* object and persisted.
@@ -187,9 +187,6 @@ struct input_stream {
int is_finished;
};
int write_object_file_literally(const void *buf, unsigned long len,
const char *type, struct object_id *oid,
unsigned flags);
int stream_loose_object(struct input_stream *in_stream, size_t len,
struct object_id *oid);