summaryrefslogtreecommitdiff
diff options
context:
space:
mode:
authorJeff King <peff@peff.net>2020-02-24 04:27:36 (GMT)
committerJunio C Hamano <gitster@pobox.com>2020-02-24 20:55:42 (GMT)
commit0763671b8e0b3ef873df13c741a911b809e6813d (patch)
tree7a47629343f59d05256b72ab8d649000c7cd6745
parent51ebf55b9309824346a6589c9f3b130c6f371b8f (diff)
downloadgit-0763671b8e0b3ef873df13c741a911b809e6813d.zip
git-0763671b8e0b3ef873df13c741a911b809e6813d.tar.gz
git-0763671b8e0b3ef873df13c741a911b809e6813d.tar.bz2
nth_packed_object_oid(): use customary integer return
Our nth_packed_object_sha1() function returns NULL for error. So when we wrapped it with nth_packed_object_oid(), we kept the same semantics. But it's a bit funny, because the caller actually passes in an out parameter, and the pointer we return is just that same struct they passed to us (or NULL). It's not too terrible, but it does make the interface a little non-idiomatic. Let's switch to our usual "0 for success, negative for error" return value. Most callers either don't check it, or are trivially converted. The one that requires the biggest change is actually improved, as we can ditch an extra aliased pointer variable. Since we are changing the interface in a subtle way that the compiler wouldn't catch, let's also change the name to catch any topics in flight. We can drop the 'o' and make it nth_packed_object_id(). That's slightly shorter, but also less redundant since the 'o' stands for "object" already. Signed-off-by: Jeff King <peff@peff.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
-rw-r--r--builtin/pack-objects.c4
-rw-r--r--midx.c2
-rw-r--r--pack-bitmap.c4
-rw-r--r--packfile.c18
-rw-r--r--packfile.h5
-rw-r--r--sha1-name.c13
6 files changed, 22 insertions, 24 deletions
diff --git a/builtin/pack-objects.c b/builtin/pack-objects.c
index 940fbcb..de8335e 100644
--- a/builtin/pack-objects.c
+++ b/builtin/pack-objects.c
@@ -3053,7 +3053,7 @@ static void add_objects_in_unpacked_packs(void)
in_pack.alloc);
for (i = 0; i < p->num_objects; i++) {
- nth_packed_object_oid(&oid, p, i);
+ nth_packed_object_id(&oid, p, i);
o = lookup_unknown_object(&oid);
if (!(o->flags & OBJECT_ADDED))
mark_in_pack_object(o, p, &in_pack);
@@ -3157,7 +3157,7 @@ static void loosen_unused_packed_objects(void)
die(_("cannot open pack index"));
for (i = 0; i < p->num_objects; i++) {
- nth_packed_object_oid(&oid, p, i);
+ nth_packed_object_id(&oid, p, i);
if (!packlist_find(&to_pack, &oid) &&
!has_sha1_pack_kept_or_nonlocal(&oid) &&
!loosened_object_can_be_discarded(&oid, p->mtime))
diff --git a/midx.c b/midx.c
index 37ec286..1527e46 100644
--- a/midx.c
+++ b/midx.c
@@ -534,7 +534,7 @@ static void fill_pack_entry(uint32_t pack_int_id,
uint32_t cur_object,
struct pack_midx_entry *entry)
{
- if (!nth_packed_object_oid(&entry->oid, p, cur_object))
+ if (nth_packed_object_id(&entry->oid, p, cur_object) < 0)
die(_("failed to locate object %d in packfile"), cur_object);
entry->pack_int_id = pack_int_id;
diff --git a/pack-bitmap.c b/pack-bitmap.c
index 5a8689c..c81d323 100644
--- a/pack-bitmap.c
+++ b/pack-bitmap.c
@@ -658,7 +658,7 @@ static void show_objects_for_type(
offset += ewah_bit_ctz64(word >> offset);
entry = &bitmap_git->pack->revindex[pos + offset];
- nth_packed_object_oid(&oid, bitmap_git->pack, entry->nr);
+ nth_packed_object_id(&oid, bitmap_git->pack, entry->nr);
if (bitmap_git->hashes)
hash = get_be32(bitmap_git->hashes + entry->nr);
@@ -1136,7 +1136,7 @@ int rebuild_existing_bitmaps(struct bitmap_index *bitmap_git,
struct object_entry *oe;
entry = &bitmap_git->pack->revindex[i];
- nth_packed_object_oid(&oid, bitmap_git->pack, entry->nr);
+ nth_packed_object_id(&oid, bitmap_git->pack, entry->nr);
oe = packlist_find(mapping, &oid);
if (oe)
diff --git a/packfile.c b/packfile.c
index 99dd1a7..947c3f8 100644
--- a/packfile.c
+++ b/packfile.c
@@ -1261,7 +1261,7 @@ static int retry_bad_packed_offset(struct repository *r,
revidx = find_pack_revindex(p, obj_offset);
if (!revidx)
return OBJ_BAD;
- nth_packed_object_oid(&oid, p, revidx->nr);
+ nth_packed_object_id(&oid, p, revidx->nr);
mark_bad_packed_object(p, oid.hash);
type = oid_object_info(r, &oid, NULL);
if (type <= OBJ_NONE)
@@ -1693,7 +1693,7 @@ void *unpack_entry(struct repository *r, struct packed_git *p, off_t obj_offset,
off_t len = revidx[1].offset - obj_offset;
if (check_pack_crc(p, &w_curs, obj_offset, len, revidx->nr)) {
struct object_id oid;
- nth_packed_object_oid(&oid, p, revidx->nr);
+ nth_packed_object_id(&oid, p, revidx->nr);
error("bad packed object CRC for %s",
oid_to_hex(&oid));
mark_bad_packed_object(p, oid.hash);
@@ -1782,7 +1782,7 @@ void *unpack_entry(struct repository *r, struct packed_git *p, off_t obj_offset,
struct object_id base_oid;
revidx = find_pack_revindex(p, obj_offset);
if (revidx) {
- nth_packed_object_oid(&base_oid, p, revidx->nr);
+ nth_packed_object_id(&base_oid, p, revidx->nr);
error("failed to read delta base object %s"
" at offset %"PRIuMAX" from %s",
oid_to_hex(&base_oid), (uintmax_t)obj_offset,
@@ -1890,15 +1890,15 @@ const unsigned char *nth_packed_object_sha1(struct packed_git *p,
}
}
-const struct object_id *nth_packed_object_oid(struct object_id *oid,
- struct packed_git *p,
- uint32_t n)
+int nth_packed_object_id(struct object_id *oid,
+ struct packed_git *p,
+ uint32_t n)
{
const unsigned char *hash = nth_packed_object_sha1(p, n);
if (!hash)
- return NULL;
+ return -1;
hashcpy(oid->hash, hash);
- return oid;
+ return 0;
}
void check_pack_index_ptr(const struct packed_git *p, const void *vptr)
@@ -2077,7 +2077,7 @@ int for_each_object_in_pack(struct packed_git *p,
else
pos = i;
- if (!nth_packed_object_oid(&oid, p, pos))
+ if (nth_packed_object_id(&oid, p, pos) < 0)
return error("unable to get sha1 of object %u in %s",
pos, p->pack_name);
diff --git a/packfile.h b/packfile.h
index ec536a4..95b83ba 100644
--- a/packfile.h
+++ b/packfile.h
@@ -129,10 +129,9 @@ int bsearch_pack(const struct object_id *oid, const struct packed_git *p, uint32
const unsigned char *nth_packed_object_sha1(struct packed_git *, uint32_t n);
/*
* Like nth_packed_object_sha1, but write the data into the object specified by
- * the the first argument. Returns the first argument on success, and NULL on
- * error.
+ * the the first argument. Returns 0 on success, negative otherwise.
*/
-const struct object_id *nth_packed_object_oid(struct object_id *, struct packed_git *, uint32_t n);
+int nth_packed_object_id(struct object_id *, struct packed_git *, uint32_t n);
/*
* Return the offset of the nth object within the specified packfile.
diff --git a/sha1-name.c b/sha1-name.c
index f2e24ea..5bb006e 100644
--- a/sha1-name.c
+++ b/sha1-name.c
@@ -155,7 +155,6 @@ static void unique_in_pack(struct packed_git *p,
struct disambiguate_state *ds)
{
uint32_t num, i, first = 0;
- const struct object_id *current = NULL;
if (p->multi_pack_index)
return;
@@ -173,10 +172,10 @@ static void unique_in_pack(struct packed_git *p,
*/
for (i = first; i < num && !ds->ambiguous; i++) {
struct object_id oid;
- current = nth_packed_object_oid(&oid, p, i);
- if (!match_sha(ds->len, ds->bin_pfx.hash, current->hash))
+ nth_packed_object_id(&oid, p, i);
+ if (!match_sha(ds->len, ds->bin_pfx.hash, oid.hash))
break;
- update_candidates(ds, current);
+ update_candidates(ds, &oid);
}
}
@@ -643,14 +642,14 @@ static void find_abbrev_len_for_pack(struct packed_git *p,
*/
mad->init_len = 0;
if (!match) {
- if (nth_packed_object_oid(&oid, p, first))
+ if (!nth_packed_object_id(&oid, p, first))
extend_abbrev_len(&oid, mad);
} else if (first < num - 1) {
- if (nth_packed_object_oid(&oid, p, first + 1))
+ if (!nth_packed_object_id(&oid, p, first + 1))
extend_abbrev_len(&oid, mad);
}
if (first > 0) {
- if (nth_packed_object_oid(&oid, p, first - 1))
+ if (!nth_packed_object_id(&oid, p, first - 1))
extend_abbrev_len(&oid, mad);
}
mad->init_len = mad->cur_len;