git-svn: Send deltas during commits

Signed-off-by: Florian Weimer <fw@deneb.enyo.de>
Acked-by: Eric Wong <normalperson@yhbt.net>

diff --git a/git-svn.perl b/git-svn.perl
index 2c3e13f2308956e825b75188259a6d96a04b0523..fdf4e4a455cb80e2c145aad356638640491d6c8a 100755 (executable)
--- a/git-svn.perl
+++ b/git-svn.perl
@@ -3691,12 +3691,20 @@ sub chg_file {
        } elsif ($m->{mode_b} !~ /755$/ && $m->{mode_a} =~ /755$/) {
                $self->change_file_prop($fbat,'svn:executable',undef);
        }
-       my ($fh, $exp) = _chg_file_get_blob $self, $fbat, $m, 'b';
+       my ($fh_a, $exp_a) = _chg_file_get_blob $self, $fbat, $m, 'a';
+       my ($fh_b, $exp_b) = _chg_file_get_blob $self, $fbat, $m, 'b';
        my $pool = SVN::Pool->new;
-       my $atd = $self->apply_textdelta($fbat, undef, $pool);
-       my $got = SVN::TxDelta::send_stream($fh, @$atd, $pool);
-       die "Checksum mismatch\nexpected: $exp\ngot: $got\n" if ($got ne $exp);
-       Git::temp_release($fh, 1);
+       my $atd = $self->apply_textdelta($fbat, $exp_a, $pool);
+       if (-s $fh_a) {
+               my $txstream = SVN::TxDelta::new ($fh_a, $fh_b, $pool);
+               SVN::TxDelta::send_txstream($txstream, @$atd, $pool);
+       } else {
+               my $got = SVN::TxDelta::send_stream($fh_b, @$atd, $pool);
+               die "Checksum mismatch\nexpected: $exp_b\ngot: $got\n"
+                   if ($got ne $exp_b);
+       }
+       Git::temp_release($fh_b, 1);
+       Git::temp_release($fh_a, 1);
        $pool->clear;
 }