Đoàn Trần Công Danh <congdanhqx@xxxxxxxxx> 于2021年1月7日周四 下午11:37写道：
>
> > -static int contains_name(struct object_array *array, const char *name)
> > +static int contains_object(struct object_array *array,
> > + const struct object *item, const char *name)
> > {
> > unsigned nr = array->nr, i;
> > struct object_array_entry *object = array->objects;
> >
> > for (i = 0; i < nr; i++, object++)
> > - if (!strcmp(object->name, name))
> > + if (item == object->item && !strcmp(object->name, name))
>
> I think the comparison of `item == object->item` is a bit too fragile.
> Yes, we all know `item` must be an entry of array.
> However, it's separated from its usage may lead to misuse in the
> future. Perhaps using `oidcmp` or adding a comment to indicate that
> `item` must be an entry of `array`.
You can find the same usage on comparing address of objects in other places:
+ https://github.com/git/git/blob/v2.30.0/bundle.c#L447
+ https://github.com/git/git/blob/v2.30.0/commit.c#L954
Both `item` and `object->item` point to address of a shared object in
parsed_object_pool of the repository, we can compare two objects by
checking address of them safely.
> > +test_bundle_object_count () {
> > + bundle=$1 &&
> > + pack=${bundle%.bdl}.pack &&
> > + convert_bundle_to_pack <"$bundle" >"$pack" &&
> > + git index-pack "$pack" &&
> > + git verify-pack -v "$pack" >verify.out &&
> > + count=$(grep "^$OID_REGEX " verify.out | wc -l) &&
>
> I think we can use 'grep -c' instead of `grep .. | wc -l`.
This function is borrowed from `t5510-fetch.sh`, and will change like
this. Thanks.
> > +
> > +convert_bundle_to_pack () {
> > + while read x && test -n "$x"
> > + do
> > + :;
> > + done
> > + cat
>
> I'm not sure what you would expect in this case,
> but in my experience, I replace this whole block with
>
> sed '1,/^$/d'
This function is used to convert bundle file to pack file by strip the
header, which has a signature, prerequisites, references. This
function is also borrowed from "t5510-fetch.sh".
> For the below change, I haven't checked but I think test_commit should work, no?
> > +test_expect_success 'setup' '
> > + # commit A & B
> > + cat >main.txt <<-EOF &&
> > + Commit A
> > + EOF
> > + git add main.txt &&
> > + test_tick &&
> > + git commit -m "Commit A" &&
> > +
> > + cat >main.txt <<-EOF &&
> > + Commit B
> > + EOF
> > + git add main.txt &&
> > + test_tick &&
> > + git commit -m "Commit B" &&
> > + A=$(git rev-parse HEAD~) &&
> > + B=$(git rev-parse HEAD) &&
I should refactor these code, but I forgot. After examine the
`test_commit` function, I have to write a new helper, because it does
not meet my needs.
1. It should not create a tag every time.
2. The tag it created is not an annotated tag.
3. I need to store the object id to a variable.
So I write a new helper `test_commit_setvar()` in next reroll. And
make this testcase much simpler.
test_expect_success 'setup' '
# branch main: commit A & B
test_commit_setvar A "Commit A" main.txt &&
test_commit_setvar B "Commit B" main.txt &&
# branch topic/1: commit C & D, refs/pull/1/head
git checkout -b topic/1 &&
test_commit_setvar C "Commit C" topic-1.txt &&
test_commit_setvar D "Commit D" topic-1.txt &&
git update-ref refs/pull/1/head HEAD &&
# branch topic/1: commit E, tag v1
git checkout main &&
test_commit_setvar E "Commit E" main.txt &&
test_commit_setvar TAG1 --tag v1 &&
# branch topic/2: commit F & G, refs/pull/2/head
git checkout -b topic/2 &&
test_commit_setvar F "Commit F" topic-2.txt &&
test_commit_setvar G "Commit G" topic-2.txt &&
git update-ref refs/pull/2/head HEAD &&
test_commit_setvar H "Commit H" topic-2.txt &&
# branch main: merge commit I & J
git checkout main &&
test_tick &&
test_commit_setvar I --merge topic/1 "Merge commit I" &&
test_commit_setvar J --merge refs/pull/2/head "Merge commit J" &&
# branch main: commit K
git checkout main &&
test_commit_setvar K "Commit K" main.txt &&
# branch release:
git checkout -b release &&
test_commit_setvar L "Commit L" release.txt &&
test_commit_setvar M "Commit M" release.txt &&
test_commit_setvar TAG2 --tag v2 &&
test_commit_setvar N "Commit N" release.txt &&
test_commit_setvar TAG3 --tag v3 &&
# branch main: merge commit O, commit P
git checkout main &&
test_commit_setvar O --merge tags/v2 "Merge commit O" &&
test_commit_setvar P "Commit P" main.txt
'
--
Jiang Xin
