The rev_parse method translates a revision name to a SHA1 hash, like
the git-rev-parse command.
Signed-off-by: Lea Wiemann <LeWiemann@xxxxxxxxx>
---
This is part of my work to extend Git.pm to create a usable
repository access abstraction layer for gitweb.
I've tested this method by calling it with a few parameters, but
there's no test suite yet. I'll probably send a message to the
mailing list about testing Git.pm soon.
This is my first patch to Git.pm, so please let me know if there is
anything wrong with it!
perl/Git.pm | 22 ++++++++++++++++++++++
1 files changed, 22 insertions(+), 0 deletions(-)
diff --git a/perl/Git.pm b/perl/Git.pm
index d05b633..9ef8cb0 100644
--- a/perl/Git.pm
+++ b/perl/Git.pm
@@ -716,6 +716,28 @@ sub ident_person {
return "$ident[0] <$ident[1]>";
}
+=item rev_parse ( REVISION_NAME )
+
+Look up the specified revision name and return the SHA1 hash, or
+return undef if the lookup failed. See the git-rev-parse command.
+
+=cut
+
+sub rev_parse {
+ # We could allow for a list of revisions here.
+ my ($self, $rev_name) = @_;
+
+ my $hash;
+ try {
+ # The --default option works around rev-parse's lack of
+ # support for getopt style "--" separators (it would fail for
+ # tags named "--foo" without it).
+ $hash = $self->command_oneline("rev-parse", "--verify", "--default",
+ $rev_name);
+ } catch Git::Error::Command with { };
+ return undef unless defined $hash and $hash =~ /^([0-9a-fA-F]{40})$/;
+ $hash;
+}
=item hash_object ( TYPE, FILENAME )
--
1.5.5.GIT
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