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Git.pm: Add remote_refs() git-ls-remote frontend

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This patch also converts the good ole' git-remote.perl to use it.
It is otherwise used in the repo.or.cz machinery and I guess other
scripts might find it useful too.

Unfortunately,

	git-ls-remote --heads .

is subtly different from

	git-ls-remote . refs/heads/

(since the second matches anywhere in the string, not just at the
beginning) so we have to provide interface for both.

Signed-off-by: Petr Baudis <pasky@suse.cz>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This commit is contained in:
Petr Baudis 2008-07-08 19:48:04 +02:00 committed by Junio C Hamano
parent e896912c5e
commit 31a92f6aa4
2 changed files with 56 additions and 5 deletions
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5
contrib/examples/git-remote.perl
View File

@ -129,10 +129,7 @@ sub update_ls_remote {
return if (($harder == 0) ||
(($harder == 1) && exists $info->{'LS_REMOTE'}));
my @ref = map {
s|^[0-9a-f]{40}\s+refs/heads/||;
$_;
} $git->command(qw(ls-remote --heads), $info->{'URL'});
my @ref = map { s|refs/heads/||; $_; } keys %{$git->remote_refs($info->{'URL'}, [ 'heads' ])};
$info->{'LS_REMOTE'} = \@ref;
}

56
perl/Git.pm
View File

@ -56,7 +56,8 @@ require Exporter;
@EXPORT_OK = qw(command command_oneline command_noisy
command_output_pipe command_input_pipe command_close_pipe
command_bidi_pipe command_close_bidi_pipe
version exec_path hash_object git_cmd_try);
version exec_path hash_object git_cmd_try
remote_refs);
=head1 DESCRIPTION
@ -668,6 +669,59 @@ sub get_color {
return $color;
}
=item remote_refs ( REPOSITORY [, GROUPS [, REFGLOBS ] ] )
This function returns a hashref of refs stored in a given remote repository.
The hash is in the format C<refname =\> hash>. For tags, the C<refname> entry
contains the tag object while a C<refname^{}> entry gives the tagged objects.
C<REPOSITORY> has the same meaning as the appropriate C<git-ls-remote>
argument; either an URL or a remote name (if called on a repository instance).
C<GROUPS> is an optional arrayref that can contain 'tags' to return all the
tags and/or 'heads' to return all the heads. C<REFGLOB> is an optional array
of strings containing a shell-like glob to further limit the refs returned in
the hash; the meaning is again the same as the appropriate C<git-ls-remote>
argument.
This function may or may not be called on a repository instance. In the former
case, remote names as defined in the repository are recognized as repository
specifiers.
=cut
sub remote_refs {
my ($self, $repo, $groups, $refglobs) = _maybe_self(@_);
my @args;
if (ref $groups eq 'ARRAY') {
foreach (@$groups) {
if ($_ eq 'heads') {
push (@args, '--heads');
} elsif ($_ eq 'tags') {
push (@args, '--tags');
} else {
# Ignore unknown groups for future
# compatibility
}
}
}
push (@args, $repo);
if (ref $refglobs eq 'ARRAY') {
push (@args, @$refglobs);
}
my @self = $self ? ($self) : (); # Ultra trickery
my ($fh, $ctx) = Git::command_output_pipe(@self, 'ls-remote', @args);
my %refs;
while (<$fh>) {
chomp;
my ($hash, $ref) = split(/\t/, $_, 2);
$refs{$ref} = $hash;
}
Git::command_close_pipe(@self, $fh, $ctx);
return \%refs;
}
=item ident ( TYPE | IDENTSTR )
=item ident_person ( TYPE | IDENTSTR | IDENTARRAY )