Merge branch 'js/maint-pretty-mailmap'

[git.git] / perl / Git.pm

diff --git a/perl/Git.pm b/perl/Git.pm
index 6ba8ee5c0d209704fdf1c9d58f63579d3a7e0836..d99e7782002e01079b3866003cc8555b7e130e3f 100644 (file)
--- a/perl/Git.pm
+++ b/perl/Git.pm
@@ -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
@@ -565,7 +566,7 @@ sub config {
                my $E = shift;
                if ($E->value() == 1) {
                        # Key not found.
-                       return undef;
+                       return;
                } else {
                        throw $E;
                }
@@ -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 )
@@ -719,9 +773,8 @@ sub ident_person {
 
 =item hash_object ( TYPE, FILENAME )
 
-Compute the SHA1 object id of the given C<FILENAME> (or data waiting in
-C<FILEHANDLE>) considering it is of the C<TYPE> object type (C<blob>,
-C<commit>, C<tree>).
+Compute the SHA1 object id of the given C<FILENAME> considering it is
+of the C<TYPE> object type (C<blob>, C<commit>, C<tree>).
 
 The method can be called without any instance or on a specified Git repository,
 it makes zero difference.
@@ -811,12 +864,12 @@ sub cat_blob {
        my $description = <$in>;
        if ($description =~ / missing$/) {
                carp "$sha1 doesn't exist in the repository";
-               return 0;
+               return -1;
        }
 
        if ($description !~ /^[0-9a-fA-F]{40} \S+ (\d+)$/) {
                carp "Unexpected result returned from git cat-file";
-               return 0;
+               return -1;
        }
 
        my $size = $1;