undef/git-commit-vandalism
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cat-file: add mailmap support to -s option

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Even though the cat-file command with `-s` option does not complain when
`--use-mailmap` option is given, the latter option is ignored. Compute
the size of the object after replacing the idents and report it instead.

In order to make `-s` option honour the mailmap mechanism we have to
read the contents of the commit/tag object. Make use of the call to
`oid_object_info_extended()` to get the contents of the object and store
in `buf`. `buf` is later freed in the function.

Mentored-by: Christian Couder <christian.couder@gmail.com>
Mentored-by: John Cai <johncai86@gmail.com>
Helped-by: Taylor Blau <me@ttaylorr.com>
Helped-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com>
Signed-off-by: Siddharth Asthana <siddharthasthana31@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This commit is contained in:
Siddharth Asthana 2022-12-20 11:31:12 +05:30 committed by Junio C Hamano
parent 63bba4fdd8
commit 49050a043b
3 changed files with 45 additions and 1 deletions
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4
Documentation/git-cat-file.txt
View File

@ -45,7 +45,9 @@ OPTIONS
-s::
Instead of the content, show the object size identified by
`<object>`.
`<object>`. If used with `--use-mailmap` option, will show
the size of updated object after replacing idents using the
mailmap mechanism.
-e::
Exit with zero status if `<object>` exists and is a valid

13
builtin/cat-file.c
View File

@ -132,8 +132,21 @@ static int cat_one_file(int opt, const char *exp_type, const char *obj_name,
case 's':
oi.sizep = &size;
if (use_mailmap) {
oi.typep = &type;
oi.contentp = (void**)&buf;
}
if (oid_object_info_extended(the_repository, &oid, &oi, flags) < 0)
die("git cat-file: could not get object info");
if (use_mailmap && (type == OBJ_COMMIT || type == OBJ_TAG)) {
size_t s = size;
buf = replace_idents_using_mailmap(buf, &s);
size = cast_size_t_to_ulong(s);
}
printf("%"PRIuMAX"\n", (uintmax_t)size);
ret = 0;
goto cleanup;

29
t/t4203-mailmap.sh
View File

@ -1022,4 +1022,33 @@ test_expect_success '--mailmap enables mailmap in cat-file for annotated tag obj
test_cmp expect actual
'
test_expect_success 'git cat-file -s returns correct size with --use-mailmap' '
test_when_finished "rm .mailmap" &&
cat >.mailmap <<-\EOF &&
C O Mitter <committer@example.com> Orig <orig@example.com>
EOF
git cat-file commit HEAD >commit.out &&
echo $(wc -c <commit.out) >expect &&
git cat-file --use-mailmap commit HEAD >commit.out &&
echo $(wc -c <commit.out) >>expect &&
git cat-file -s HEAD >actual &&
git cat-file --use-mailmap -s HEAD >>actual &&
test_cmp expect actual
'
test_expect_success 'git cat-file -s returns correct size with --use-mailmap for tag objects' '
test_when_finished "rm .mailmap" &&
cat >.mailmap <<-\EOF &&
Orig <orig@example.com> C O Mitter <committer@example.com>
EOF
git tag -a -m "annotated tag" v3 &&
git cat-file tag v3 >tag.out &&
echo $(wc -c <tag.out) >expect &&
git cat-file --use-mailmap tag v3 >tag.out &&
echo $(wc -c <tag.out) >>expect &&
git cat-file -s v3 >actual &&
git cat-file --use-mailmap -s v3 >>actual &&
test_cmp expect actual
'
test_done