perl: make Git::IndexInfo work with SHA-256

Most of the Git modules, git-svn excepted, don't know anything about the
hash algorithm and mostly work.  However, when we're printing an
all-zero object ID in Git::IndexInfo, we need to know the hash length.

Since we don't want to change the API to have that information passed
in, let's query the config to find the hash algorithm and compute the
right value.

Signed-off-by: brian m. carlson <sandals@crustytoothpaste.net>
Acked-by: Eric Wong <e@80x24.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This commit is contained in:
brian m. carlson 2020-06-22 18:04:13 +00:00 committed by Junio C Hamano
parent 9ab33150a0
commit ff508e227c

View file

@ -5,13 +5,15 @@ package Git::IndexInfo;
sub new {
my ($class) = @_;
my $hash_algo = Git::config('extensions.objectformat') || 'sha1';
my ($gui, $ctx) = command_input_pipe(qw/update-index -z --index-info/);
bless { gui => $gui, ctx => $ctx, nr => 0}, $class;
bless { gui => $gui, ctx => $ctx, nr => 0, hash_algo => $hash_algo}, $class;
}
sub remove {
my ($self, $path) = @_;
if (print { $self->{gui} } '0 ', 0 x 40, "\t", $path, "\0") {
my $length = $self->{hash_algo} eq 'sha256' ? 64 : 40;
if (print { $self->{gui} } '0 ', 0 x $length, "\t", $path, "\0") {
return ++$self->{nr};
}
undef;