dh_illumos_gate: extract git revision

1 files changed, 9 insertions, 3 deletions

diff --git a/dh_illumos_gate b/dh_illumos_gate
index c348436..7c18f2b 100755
--- a/dh_illumos_gate
+++ b/dh_illumos_gate
@@ -74,9 +74,11 @@ and then configure it.
 
 Only unpack illumos-gate tarball, do not configure.
 
-=item B<--checkout=>I<git-hash>
+=item B<--checkout>[I<=git-hash>]
 
 Clone illumos-gate git repository and checkout I<git-hash> in there.
+If not specified, hash is extracted from topmost version in F<debian/changelog>:
+C<1.2.3.git.<hash>-4>.
 Could be used for B<--create-orig>. Repository is https://github.com/illumos/illumos-gate.git,
 unless specified by B<--repository>. You should also set B<--destdir>.
 
@@ -157,13 +159,14 @@ Here are things which this helper does after unpacking illumos sources.
 
 =cut
 
+$dh{CHECKOUT}   = undef;
 $dh{DESTDIR}    = '.';
 $dh{REPOSITORY} = 'https://github.com/illumos/illumos-gate.git';
 
 init(
     options => {
         'build'        => \$dh{BUILD},
-        'checkout=s'   => \$dh{CHECKOUT},
+        'checkout:s'   => \$dh{CHECKOUT},
         'configure'    => \$dh{CONFIGURE},
         'create-orig'  => \$dh{CREATE_ORIG},
         'destdir=s'    => \$dh{DESTDIR},
@@ -185,10 +188,13 @@ if ( defined( $dh{'EXCLUDE'} ) && $dh{'EXCLUDE'} ) {
     }
 }
 
-if ( $dh{CHECKOUT} ) {
+if ( defined $dh{CHECKOUT} ) {
     if ( -e $dh{DESTDIR} ) {
         error("Destination path `$dh{DESTDIR}' exists.");
     }
+    if ( !$dh{CHECKOUT} ) {
+        $dh{CHECKOUT} = $version =~ s!.*\.git\.(\w+)-[^-]+$!$1!r;
+    }
     doit( 'git', 'clone', '-n',         $dh{REPOSITORY}, $dh{DESTDIR} );
     doit( 'git', '-C',    $dh{DESTDIR}, 'checkout',      $dh{CHECKOUT} );
     exit;