rerere: add clear, diff, and status commands

diff --git a/git-svn.perl b/git-svn.perl
index 3891122d73c6f76f41f31cc6280f9d6c40581d62..1f8a3b0e0736cc9175a18c12d57b8e25a8025ba0 100755 (executable)
--- a/git-svn.perl
+++ b/git-svn.perl
@@ -72,7 +72,7 @@ sub nag_lib {
        $_username, $_config_dir, $_no_auth_cache, $_xfer_delta,
        $_pager, $_color);
 my (@_branch_from, %tree_map, %users, %rusers, %equiv);
-my ($_svn_co_url_revs, $_svn_pg_peg_revs);
+my ($_svn_co_url_revs, $_svn_pg_peg_revs, $_svn_can_do_switch);
 my @repo_path_split_cache;
 
 my %fc_opts = ( 'no-ignore-externals' => \$_no_ignore_ext,
@@ -459,6 +459,7 @@ sub fetch_lib {
                $min = $max + 1;
                $max += $inc;
                $max = $head if ($max > $head);
+               $SVN = libsvn_connect($SVN_URL);
        }
        restore_index($index);
        return { revision => $last_rev, commit => $last_commit };
@@ -2876,6 +2877,24 @@ sub libsvn_connect {
        return $ra;
 }
 
+sub libsvn_can_do_switch {
+       unless (defined $_svn_can_do_switch) {
+               my $pool = SVN::Pool->new;
+               my $rep = eval {
+                       $SVN->do_switch(1, '', 0, $SVN->{url},
+                                       SVN::Delta::Editor->new, $pool);
+               };
+               if ($@) {
+                       $_svn_can_do_switch = 0;
+               } else {
+                       $rep->abort_report($pool);
+                       $_svn_can_do_switch = 1;
+               }
+               $pool->clear;
+       }
+       $_svn_can_do_switch;
+}
+
 sub libsvn_dup_ra {
        my ($ra) = @_;
        SVN::Ra->new(map { $_ => $ra->{$_} } qw/config url
@@ -2982,7 +3001,7 @@ sub libsvn_fetch_delta {
 sub libsvn_fetch_full {
        my ($last_commit, $paths, $rev, $author, $date, $msg) = @_;
        open my $gui, '| git-update-index -z --index-info' or croak $!;
-       my @amr;
+       my %amr;
        my $p = $SVN->{svn_path};
        foreach my $f (keys %$paths) {
                my $m = $paths->{$f}->action();
@@ -3001,7 +3020,7 @@ sub libsvn_fetch_full {
                my $t = $SVN->check_path($f, $rev, $pool);
                if ($t == $SVN::Node::file) {
                        if ($m =~ /^[AMR]$/) {
-                               push @amr, [ $m, $f ];
+                               $amr{$f} = $m;
                        } else {
                                die "Unrecognized action: $m, ($f r$rev)\n";
                        }
@@ -3009,13 +3028,13 @@ sub libsvn_fetch_full {
                        my @traversed = ();
                        libsvn_traverse($gui, '', $f, $rev, \@traversed);
                        foreach (@traversed) {
-                               push @amr, [ $m, $_ ]
+                               $amr{$_} = $m;
                        }
                }
                $pool->clear;
        }
-       foreach (@amr) {
-               libsvn_get_file($gui, $_->[1], $rev, $_->[0]);
+       foreach (keys %amr) {
+               libsvn_get_file($gui, $_, $rev, $amr{$_});
        }
        close $gui or croak $?;
        return libsvn_log_entry($rev, $author, $date, $msg, [$last_commit]);
@@ -3197,12 +3216,26 @@ sub libsvn_find_parent_branch {
                unlink $GIT_SVN_INDEX;
                print STDERR "Found branch parent: ($GIT_SVN) $parent\n";
                sys(qw/git-read-tree/, $parent);
-               # I can't seem to get do_switch() to work correctly with
-               # the SWIG interface (TypeError when passing switch_url...),
-               # so we'll unconditionally bypass the delta interface here
-               # for now
-               return libsvn_fetch_full($parent, $paths, $rev,
-                                       $author, $date, $msg);
+               unless (libsvn_can_do_switch()) {
+                       return libsvn_fetch_full($parent, $paths, $rev,
+                                               $author, $date, $msg);
+               }
+               # do_switch works with svn/trunk >= r22312, but that is not
+               # included with SVN 1.4.2 (the latest version at the moment),
+               # so we can't rely on it.
+               my $ra = libsvn_connect("$url/$branch_from");
+               my $ed = SVN::Git::Fetcher->new({c => $parent, q => $_q});
+               my $pool = SVN::Pool->new;
+               my $reporter = $ra->do_switch($rev, '', 1, $SVN->{url},
+                                             $ed, $pool);
+               my @lock = $SVN::Core::VERSION ge '1.2.0' ? (undef) : ();
+               $reporter->set_path('', $r0, 0, @lock, $pool);
+               $reporter->finish_report($pool);
+               $pool->clear;
+               unless ($ed->{git_commit_ok}) {
+                       die "SVN connection failed somewhere...\n";
+               }
+               return libsvn_log_entry($rev, $author, $date, $msg, [$parent]);
        }
        print STDERR "Nope, branch point not imported or unknown\n";
        return undef;
@@ -3437,6 +3470,9 @@ sub open_file {
        my ($self, $path, $pb, $rev) = @_;
        my ($mode, $blob) = (safe_qx('git-ls-tree',$self->{c},'--',$path)
                             =~ /^(\d{6}) blob ([a-f\d]{40})\t/);
+       unless (defined $mode && defined $blob) {
+               die "$path was not found in commit $self->{c} (r$rev)\n";
+       }
        { path => $path, mode_a => $mode, mode_b => $mode, blob => $blob,
          pool => SVN::Pool->new, action => 'M' };
 }