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

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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
1 changed files with 4 additions and 2 deletions
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6
perl/Git/IndexInfo.pm
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@ -5,13 +5,15 @@ use Git qw/command_input_pipe command_close_pipe/;
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;