Prepare for 1.7.11.6
[git.git] / git-svn.perl
index 73b1c4b13b489efaebdfa5e786ebc435bf05aae0..0b074c4c63ebb6e1334cf05371cd22087fb79f63 100755 (executable)
@@ -67,9 +67,6 @@ sub _req_svn {
        }
 }
 my $can_compress = eval { require Compress::Zlib; 1};
-push @Git::SVN::Ra::ISA, 'SVN::Ra';
-push @SVN::Git::Editor::ISA, 'SVN::Delta::Editor';
-push @SVN::Git::Fetcher::ISA, 'SVN::Delta::Editor';
 use Carp qw/croak/;
 use Digest::MD5;
 use IO::File qw//;
@@ -80,6 +77,9 @@ use File::Find;
 use Getopt::Long qw/:config gnu_getopt no_ignore_case auto_abbrev/;
 use IPC::Open3;
 use Git;
+use Git::SVN::Editor qw//;
+use Git::SVN::Fetcher qw//;
+use Git::SVN::Ra qw//;
 use Git::SVN::Prompt qw//;
 use Memoize;  # core since 5.8.0, Jul 2002
 
@@ -89,8 +89,7 @@ BEGIN {
        foreach (qw/command command_oneline command_noisy command_output_pipe
                    command_input_pipe command_close_pipe
                    command_bidi_pipe command_close_bidi_pipe/) {
-               for my $package ( qw(SVN::Git::Editor SVN::Git::Fetcher
-                       Git::SVN::Migration Git::SVN::Log Git::SVN),
+               for my $package ( qw(Git::SVN::Migration Git::SVN::Log Git::SVN),
                        __PACKAGE__) {
                        *{"${package}::$_"} = \&{"Git::$_"};
                }
@@ -111,12 +110,12 @@ my ($_stdin, $_help, $_edit,
        $_prefix, $_no_checkout, $_url, $_verbose,
        $_git_format, $_commit_url, $_tag, $_merge_info, $_interactive);
 $Git::SVN::_follow_parent = 1;
-$SVN::Git::Fetcher::_placeholder_filename = ".gitignore";
+$Git::SVN::Fetcher::_placeholder_filename = ".gitignore";
 $_q ||= 0;
 my %remote_opts = ( 'username=s' => \$Git::SVN::Prompt::_username,
                     'config-dir=s' => \$Git::SVN::Ra::config_dir,
                     'no-auth-cache' => \$Git::SVN::Prompt::_no_auth_cache,
-                    'ignore-paths=s' => \$SVN::Git::Fetcher::_ignore_regex,
+                    'ignore-paths=s' => \$Git::SVN::Fetcher::_ignore_regex,
                     'ignore-refs=s' => \$Git::SVN::Ra::_ignore_refs_regex );
 my %fc_opts = ( 'follow-parent|follow!' => \$Git::SVN::_follow_parent,
                'authors-file|A=s' => \$_authors,
@@ -149,10 +148,10 @@ my %init_opts = ( 'template=s' => \$_template, 'shared:s' => \$_shared,
                  'rewrite-uuid=s' => sub { $icv{rewriteUUID} = $_[1] },
                   %remote_opts );
 my %cmt_opts = ( 'edit|e' => \$_edit,
-               'rmdir' => \$SVN::Git::Editor::_rmdir,
-               'find-copies-harder' => \$SVN::Git::Editor::_find_copies_harder,
-               'l=i' => \$SVN::Git::Editor::_rename_limit,
-               'copy-similarity|C=i'=> \$SVN::Git::Editor::_cp_similarity
+               'rmdir' => \$Git::SVN::Editor::_rmdir,
+               'find-copies-harder' => \$Git::SVN::Editor::_find_copies_harder,
+               'l=i' => \$Git::SVN::Editor::_rename_limit,
+               'copy-similarity|C=i'=> \$Git::SVN::Editor::_cp_similarity
 );
 
 my %cmd = (
@@ -164,9 +163,9 @@ my %cmd = (
        clone => [ \&cmd_clone, "Initialize and fetch revisions",
                        { 'revision|r=s' => \$_revision,
                          'preserve-empty-dirs' =>
-                               \$SVN::Git::Fetcher::_preserve_empty_dirs,
+                               \$Git::SVN::Fetcher::_preserve_empty_dirs,
                          'placeholder-filename=s' =>
-                               \$SVN::Git::Fetcher::_placeholder_filename,
+                               \$Git::SVN::Fetcher::_placeholder_filename,
                           %fc_opts, %init_opts } ],
        init => [ \&cmd_init, "Initialize a repo for tracking" .
                          " (requires URL argument)",
@@ -464,15 +463,15 @@ sub do_git_init_db {
                command_noisy('config', "$pfx.$i", $icv{$i});
                $set = $i;
        }
-       my $ignore_paths_regex = \$SVN::Git::Fetcher::_ignore_regex;
+       my $ignore_paths_regex = \$Git::SVN::Fetcher::_ignore_regex;
        command_noisy('config', "$pfx.ignore-paths", $$ignore_paths_regex)
                if defined $$ignore_paths_regex;
        my $ignore_refs_regex = \$Git::SVN::Ra::_ignore_refs_regex;
        command_noisy('config', "$pfx.ignore-refs", $$ignore_refs_regex)
                if defined $$ignore_refs_regex;
 
-       if (defined $SVN::Git::Fetcher::_preserve_empty_dirs) {
-               my $fname = \$SVN::Git::Fetcher::_placeholder_filename;
+       if (defined $Git::SVN::Fetcher::_preserve_empty_dirs) {
+               my $fname = \$Git::SVN::Fetcher::_placeholder_filename;
                command_noisy('config', "$pfx.preserve-empty-dirs", 'true');
                command_noisy('config', "$pfx.placeholder-filename", $$fname);
        }
@@ -942,7 +941,7 @@ sub cmd_dcommit {
                                        },
                                        mergeinfo => $_merge_info,
                                        svn_path => '');
-                       if (!SVN::Git::Editor->new(\%ed_opts)->apply_diff) {
+                       if (!Git::SVN::Editor->new(\%ed_opts)->apply_diff) {
                                print "No changes\n$d~1 == $d\n";
                        } elsif ($parents->{$d} && @{$parents->{$d}}) {
                                $gs->{inject_parents_dcommit}->{$cmt_rev} =
@@ -1066,8 +1065,7 @@ sub cmd_branch {
                            " with the --destination argument.\n";
                }
                foreach my $g (@{$allglobs}) {
-                       # SVN::Git::Editor could probably be moved to Git.pm..
-                       my $re = SVN::Git::Editor::glob2pat($g->{path}->{left});
+                       my $re = Git::SVN::Editor::glob2pat($g->{path}->{left});
                        if ($_branch_dest =~ /$re/) {
                                $glob = $g;
                                last;
@@ -1425,7 +1423,7 @@ sub cmd_commit_diff {
                        tree_b => $tb,
                        editor_cb => sub { print "Committed r$_[0]\n" },
                        svn_path => $svn_path );
-       if (!SVN::Git::Editor->new(\%ed_opts)->apply_diff) {
+       if (!Git::SVN::Editor->new(\%ed_opts)->apply_diff) {
                print "No changes\n$ta == $tb\n";
        }
 }
@@ -2057,6 +2055,10 @@ use Time::Local;
 use Memoize;  # core since 5.8.0, Jul 2002
 use Memoize::Storable;
 use POSIX qw(:signal_h);
+my $can_use_yaml;
+BEGIN {
+       $can_use_yaml = eval { require Git::SVN::Memoize::YAML; 1};
+}
 
 my ($_gc_nr, $_gc_period);
 
@@ -3157,7 +3159,7 @@ sub find_parent_branch {
                        # at the moment), so we can't rely on it
                        $self->{last_rev} = $r0;
                        $self->{last_commit} = $parent;
-                       $ed = SVN::Git::Fetcher->new($self, $gs->{path});
+                       $ed = Git::SVN::Fetcher->new($self, $gs->{path});
                        $gs->ra->gs_do_switch($r0, $rev, $gs,
                                              $self->full_url, $ed)
                          or die "SVN connection failed somewhere...\n";
@@ -3175,7 +3177,7 @@ sub find_parent_branch {
                } else {
                        print STDERR "Following parent with do_update\n"
                                     unless $::_q > 1;
-                       $ed = SVN::Git::Fetcher->new($self);
+                       $ed = Git::SVN::Fetcher->new($self);
                        $self->ra->gs_do_update($rev, $rev, $self, $ed)
                          or die "SVN connection failed somewhere...\n";
                }
@@ -3198,7 +3200,7 @@ sub do_fetch {
                        push @{$log_entry->{parents}}, $lc;
                        return $log_entry;
                }
-               $ed = SVN::Git::Fetcher->new($self);
+               $ed = Git::SVN::Fetcher->new($self);
                $last_rev = $self->{last_rev};
                $ed->{c} = $lc;
                @parents = ($lc);
@@ -3207,7 +3209,7 @@ sub do_fetch {
                if (my $log_entry = $self->find_parent_branch($paths, $rev)) {
                        return $log_entry;
                }
-               $ed = SVN::Git::Fetcher->new($self);
+               $ed = Git::SVN::Fetcher->new($self);
        }
        unless ($self->ra->gs_do_update($last_rev, $rev, $self, $ed)) {
                die "SVN connection failed somewhere...\n";
@@ -3579,6 +3581,17 @@ sub has_no_changes {
                command_oneline("rev-parse", "$commit~1^{tree}"));
 }
 
+sub tie_for_persistent_memoization {
+       my $hash = shift;
+       my $path = shift;
+
+       if ($can_use_yaml) {
+               tie %$hash => 'Git::SVN::Memoize::YAML', "$path.yaml";
+       } else {
+               tie %$hash => 'Memoize::Storable', "$path.db", 'nstore';
+       }
+}
+
 # The GIT_DIR environment variable is not always set until after the command
 # line arguments are processed, so we can't memoize in a BEGIN block.
 {
@@ -3591,22 +3604,26 @@ sub has_no_changes {
                my $cache_path = "$ENV{GIT_DIR}/svn/.caches/";
                mkpath([$cache_path]) unless -d $cache_path;
 
-               tie my %lookup_svn_merge_cache => 'Memoize::Storable',
-                   "$cache_path/lookup_svn_merge.db", 'nstore';
+               my %lookup_svn_merge_cache;
+               my %check_cherry_pick_cache;
+               my %has_no_changes_cache;
+
+               tie_for_persistent_memoization(\%lookup_svn_merge_cache,
+                   "$cache_path/lookup_svn_merge");
                memoize 'lookup_svn_merge',
                        SCALAR_CACHE => 'FAULT',
                        LIST_CACHE => ['HASH' => \%lookup_svn_merge_cache],
                ;
 
-               tie my %check_cherry_pick_cache => 'Memoize::Storable',
-                   "$cache_path/check_cherry_pick.db", 'nstore';
+               tie_for_persistent_memoization(\%check_cherry_pick_cache,
+                   "$cache_path/check_cherry_pick");
                memoize 'check_cherry_pick',
                        SCALAR_CACHE => 'FAULT',
                        LIST_CACHE => ['HASH' => \%check_cherry_pick_cache],
                ;
 
-               tie my %has_no_changes_cache => 'Memoize::Storable',
-                   "$cache_path/has_no_changes.db", 'nstore';
+               tie_for_persistent_memoization(\%has_no_changes_cache,
+                   "$cache_path/has_no_changes");
                memoize 'has_no_changes',
                        SCALAR_CACHE => ['HASH' => \%has_no_changes_cache],
                        LIST_CACHE => 'FAULT',
@@ -3912,7 +3929,7 @@ sub set_tree {
                        editor_cb => sub {
                               $self->set_tree_cb($log_entry, $tree, @_) },
                        svn_path => $self->{path} );
-       if (!SVN::Git::Editor->new(\%ed_opts)->apply_diff) {
+       if (!Git::SVN::Editor->new(\%ed_opts)->apply_diff) {
                print "No changes\nr$self->{last_rev} = $tree\n";
        }
 }
@@ -4328,1585 +4345,6 @@ sub remove_username {
        $_[0] =~ s{^([^:]*://)[^@]+@}{$1};
 }
 
-package SVN::Git::Fetcher;
-use vars qw/@ISA $_ignore_regex $_preserve_empty_dirs $_placeholder_filename
-            @deleted_gpath %added_placeholder $repo_id/;
-use strict;
-use warnings;
-use Carp qw/croak/;
-use File::Basename qw/dirname/;
-use IO::File qw//;
-
-# file baton members: path, mode_a, mode_b, pool, fh, blob, base
-sub new {
-       my ($class, $git_svn, $switch_path) = @_;
-       my $self = SVN::Delta::Editor->new;
-       bless $self, $class;
-       if (exists $git_svn->{last_commit}) {
-               $self->{c} = $git_svn->{last_commit};
-               $self->{empty_symlinks} =
-                                 _mark_empty_symlinks($git_svn, $switch_path);
-       }
-
-       # some options are read globally, but can be overridden locally
-       # per [svn-remote "..."] section.  Command-line options will *NOT*
-       # override options set in an [svn-remote "..."] section
-       $repo_id = $git_svn->{repo_id};
-       my $k = "svn-remote.$repo_id.ignore-paths";
-       my $v = eval { command_oneline('config', '--get', $k) };
-       $self->{ignore_regex} = $v;
-
-       $k = "svn-remote.$repo_id.preserve-empty-dirs";
-       $v = eval { command_oneline('config', '--get', '--bool', $k) };
-       if ($v && $v eq 'true') {
-               $_preserve_empty_dirs = 1;
-               $k = "svn-remote.$repo_id.placeholder-filename";
-               $v = eval { command_oneline('config', '--get', $k) };
-               $_placeholder_filename = $v;
-       }
-
-       # Load the list of placeholder files added during previous invocations.
-       $k = "svn-remote.$repo_id.added-placeholder";
-       $v = eval { command_oneline('config', '--get-all', $k) };
-       if ($_preserve_empty_dirs && $v) {
-               # command() prints errors to stderr, so we only call it if
-               # command_oneline() succeeded.
-               my @v = command('config', '--get-all', $k);
-               $added_placeholder{ dirname($_) } = $_ foreach @v;
-       }
-
-       $self->{empty} = {};
-       $self->{dir_prop} = {};
-       $self->{file_prop} = {};
-       $self->{absent_dir} = {};
-       $self->{absent_file} = {};
-       $self->{gii} = $git_svn->tmp_index_do(sub { Git::IndexInfo->new });
-       $self->{pathnameencoding} = Git::config('svn.pathnameencoding');
-       $self;
-}
-
-# this uses the Ra object, so it must be called before do_{switch,update},
-# not inside them (when the Git::SVN::Fetcher object is passed) to
-# do_{switch,update}
-sub _mark_empty_symlinks {
-       my ($git_svn, $switch_path) = @_;
-       my $bool = Git::config_bool('svn.brokenSymlinkWorkaround');
-       return {} if (!defined($bool)) || (defined($bool) && ! $bool);
-
-       my %ret;
-       my ($rev, $cmt) = $git_svn->last_rev_commit;
-       return {} unless ($rev && $cmt);
-
-       # allow the warning to be printed for each revision we fetch to
-       # ensure the user sees it.  The user can also disable the workaround
-       # on the repository even while git svn is running and the next
-       # revision fetched will skip this expensive function.
-       my $printed_warning;
-       chomp(my $empty_blob = `git hash-object -t blob --stdin < /dev/null`);
-       my ($ls, $ctx) = command_output_pipe(qw/ls-tree -r -z/, $cmt);
-       local $/ = "\0";
-       my $pfx = defined($switch_path) ? $switch_path : $git_svn->{path};
-       $pfx .= '/' if length($pfx);
-       while (<$ls>) {
-               chomp;
-               s/\A100644 blob $empty_blob\t//o or next;
-               unless ($printed_warning) {
-                       print STDERR "Scanning for empty symlinks, ",
-                                    "this may take a while if you have ",
-                                    "many empty files\n",
-                                    "You may disable this with `",
-                                    "git config svn.brokenSymlinkWorkaround ",
-                                    "false'.\n",
-                                    "This may be done in a different ",
-                                    "terminal without restarting ",
-                                    "git svn\n";
-                       $printed_warning = 1;
-               }
-               my $path = $_;
-               my (undef, $props) =
-                              $git_svn->ra->get_file($pfx.$path, $rev, undef);
-               if ($props->{'svn:special'}) {
-                       $ret{$path} = 1;
-               }
-       }
-       command_close_pipe($ls, $ctx);
-       \%ret;
-}
-
-# returns true if a given path is inside a ".git" directory
-sub in_dot_git {
-       $_[0] =~ m{(?:^|/)\.git(?:/|$)};
-}
-
-# return value: 0 -- don't ignore, 1 -- ignore
-sub is_path_ignored {
-       my ($self, $path) = @_;
-       return 1 if in_dot_git($path);
-       return 1 if defined($self->{ignore_regex}) &&
-                   $path =~ m!$self->{ignore_regex}!;
-       return 0 unless defined($_ignore_regex);
-       return 1 if $path =~ m!$_ignore_regex!o;
-       return 0;
-}
-
-sub set_path_strip {
-       my ($self, $path) = @_;
-       $self->{path_strip} = qr/^\Q$path\E(\/|$)/ if length $path;
-}
-
-sub open_root {
-       { path => '' };
-}
-
-sub open_directory {
-       my ($self, $path, $pb, $rev) = @_;
-       { path => $path };
-}
-
-sub git_path {
-       my ($self, $path) = @_;
-       if (my $enc = $self->{pathnameencoding}) {
-               require Encode;
-               Encode::from_to($path, 'UTF-8', $enc);
-       }
-       if ($self->{path_strip}) {
-               $path =~ s!$self->{path_strip}!! or
-                 die "Failed to strip path '$path' ($self->{path_strip})\n";
-       }
-       $path;
-}
-
-sub delete_entry {
-       my ($self, $path, $rev, $pb) = @_;
-       return undef if $self->is_path_ignored($path);
-
-       my $gpath = $self->git_path($path);
-       return undef if ($gpath eq '');
-
-       # remove entire directories.
-       my ($tree) = (command('ls-tree', '-z', $self->{c}, "./$gpath")
-                        =~ /\A040000 tree ([a-f\d]{40})\t\Q$gpath\E\0/);
-       if ($tree) {
-               my ($ls, $ctx) = command_output_pipe(qw/ls-tree
-                                                    -r --name-only -z/,
-                                                    $tree);
-               local $/ = "\0";
-               while (<$ls>) {
-                       chomp;
-                       my $rmpath = "$gpath/$_";
-                       $self->{gii}->remove($rmpath);
-                       print "\tD\t$rmpath\n" unless $::_q;
-               }
-               print "\tD\t$gpath/\n" unless $::_q;
-               command_close_pipe($ls, $ctx);
-       } else {
-               $self->{gii}->remove($gpath);
-               print "\tD\t$gpath\n" unless $::_q;
-       }
-       # Don't add to @deleted_gpath if we're deleting a placeholder file.
-       push @deleted_gpath, $gpath unless $added_placeholder{dirname($path)};
-       $self->{empty}->{$path} = 0;
-       undef;
-}
-
-sub open_file {
-       my ($self, $path, $pb, $rev) = @_;
-       my ($mode, $blob);
-
-       goto out if $self->is_path_ignored($path);
-
-       my $gpath = $self->git_path($path);
-       ($mode, $blob) = (command('ls-tree', '-z', $self->{c}, "./$gpath")
-                            =~ /\A(\d{6}) blob ([a-f\d]{40})\t\Q$gpath\E\0/);
-       unless (defined $mode && defined $blob) {
-               die "$path was not found in commit $self->{c} (r$rev)\n";
-       }
-       if ($mode eq '100644' && $self->{empty_symlinks}->{$path}) {
-               $mode = '120000';
-       }
-out:
-       { path => $path, mode_a => $mode, mode_b => $mode, blob => $blob,
-         pool => SVN::Pool->new, action => 'M' };
-}
-
-sub add_file {
-       my ($self, $path, $pb, $cp_path, $cp_rev) = @_;
-       my $mode;
-
-       if (!$self->is_path_ignored($path)) {
-               my ($dir, $file) = ($path =~ m#^(.*?)/?([^/]+)$#);
-               delete $self->{empty}->{$dir};
-               $mode = '100644';
-
-               if ($added_placeholder{$dir}) {
-                       # Remove our placeholder file, if we created one.
-                       delete_entry($self, $added_placeholder{$dir})
-                               unless $path eq $added_placeholder{$dir};
-                       delete $added_placeholder{$dir}
-               }
-       }
-
-       { path => $path, mode_a => $mode, mode_b => $mode,
-         pool => SVN::Pool->new, action => 'A' };
-}
-
-sub add_directory {
-       my ($self, $path, $cp_path, $cp_rev) = @_;
-       goto out if $self->is_path_ignored($path);
-       my $gpath = $self->git_path($path);
-       if ($gpath eq '') {
-               my ($ls, $ctx) = command_output_pipe(qw/ls-tree
-                                                    -r --name-only -z/,
-                                                    $self->{c});
-               local $/ = "\0";
-               while (<$ls>) {
-                       chomp;
-                       $self->{gii}->remove($_);
-                       print "\tD\t$_\n" unless $::_q;
-                       push @deleted_gpath, $gpath;
-               }
-               command_close_pipe($ls, $ctx);
-               $self->{empty}->{$path} = 0;
-       }
-       my ($dir, $file) = ($path =~ m#^(.*?)/?([^/]+)$#);
-       delete $self->{empty}->{$dir};
-       $self->{empty}->{$path} = 1;
-
-       if ($added_placeholder{$dir}) {
-               # Remove our placeholder file, if we created one.
-               delete_entry($self, $added_placeholder{$dir});
-               delete $added_placeholder{$dir}
-       }
-
-out:
-       { path => $path };
-}
-
-sub change_dir_prop {
-       my ($self, $db, $prop, $value) = @_;
-       return undef if $self->is_path_ignored($db->{path});
-       $self->{dir_prop}->{$db->{path}} ||= {};
-       $self->{dir_prop}->{$db->{path}}->{$prop} = $value;
-       undef;
-}
-
-sub absent_directory {
-       my ($self, $path, $pb) = @_;
-       return undef if $self->is_path_ignored($path);
-       $self->{absent_dir}->{$pb->{path}} ||= [];
-       push @{$self->{absent_dir}->{$pb->{path}}}, $path;
-       undef;
-}
-
-sub absent_file {
-       my ($self, $path, $pb) = @_;
-       return undef if $self->is_path_ignored($path);
-       $self->{absent_file}->{$pb->{path}} ||= [];
-       push @{$self->{absent_file}->{$pb->{path}}}, $path;
-       undef;
-}
-
-sub change_file_prop {
-       my ($self, $fb, $prop, $value) = @_;
-       return undef if $self->is_path_ignored($fb->{path});
-       if ($prop eq 'svn:executable') {
-               if ($fb->{mode_b} != 120000) {
-                       $fb->{mode_b} = defined $value ? 100755 : 100644;
-               }
-       } elsif ($prop eq 'svn:special') {
-               $fb->{mode_b} = defined $value ? 120000 : 100644;
-       } else {
-               $self->{file_prop}->{$fb->{path}} ||= {};
-               $self->{file_prop}->{$fb->{path}}->{$prop} = $value;
-       }
-       undef;
-}
-
-sub apply_textdelta {
-       my ($self, $fb, $exp) = @_;
-       return undef if $self->is_path_ignored($fb->{path});
-       my $fh = $::_repository->temp_acquire('svn_delta');
-       # $fh gets auto-closed() by SVN::TxDelta::apply(),
-       # (but $base does not,) so dup() it for reading in close_file
-       open my $dup, '<&', $fh or croak $!;
-       my $base = $::_repository->temp_acquire('git_blob');
-
-       if ($fb->{blob}) {
-               my ($base_is_link, $size);
-
-               if ($fb->{mode_a} eq '120000' &&
-                   ! $self->{empty_symlinks}->{$fb->{path}}) {
-                       print $base 'link ' or die "print $!\n";
-                       $base_is_link = 1;
-               }
-       retry:
-               $size = $::_repository->cat_blob($fb->{blob}, $base);
-               die "Failed to read object $fb->{blob}" if ($size < 0);
-
-               if (defined $exp) {
-                       seek $base, 0, 0 or croak $!;
-                       my $got = ::md5sum($base);
-                       if ($got ne $exp) {
-                               my $err = "Checksum mismatch: ".
-                                      "$fb->{path} $fb->{blob}\n" .
-                                      "expected: $exp\n" .
-                                      "     got: $got\n";
-                               if ($base_is_link) {
-                                       warn $err,
-                                            "Retrying... (possibly ",
-                                            "a bad symlink from SVN)\n";
-                                       $::_repository->temp_reset($base);
-                                       $base_is_link = 0;
-                                       goto retry;
-                               }
-                               die $err;
-                       }
-               }
-       }
-       seek $base, 0, 0 or croak $!;
-       $fb->{fh} = $fh;
-       $fb->{base} = $base;
-       [ SVN::TxDelta::apply($base, $dup, undef, $fb->{path}, $fb->{pool}) ];
-}
-
-sub close_file {
-       my ($self, $fb, $exp) = @_;
-       return undef if $self->is_path_ignored($fb->{path});
-
-       my $hash;
-       my $path = $self->git_path($fb->{path});
-       if (my $fh = $fb->{fh}) {
-               if (defined $exp) {
-                       seek($fh, 0, 0) or croak $!;
-                       my $got = ::md5sum($fh);
-                       if ($got ne $exp) {
-                               die "Checksum mismatch: $path\n",
-                                   "expected: $exp\n    got: $got\n";
-                       }
-               }
-               if ($fb->{mode_b} == 120000) {
-                       sysseek($fh, 0, 0) or croak $!;
-                       my $rd = sysread($fh, my $buf, 5);
-
-                       if (!defined $rd) {
-                               croak "sysread: $!\n";
-                       } elsif ($rd == 0) {
-                               warn "$path has mode 120000",
-                                    " but it points to nothing\n",
-                                    "converting to an empty file with mode",
-                                    " 100644\n";
-                               $fb->{mode_b} = '100644';
-                       } elsif ($buf ne 'link ') {
-                               warn "$path has mode 120000",
-                                    " but is not a link\n";
-                       } else {
-                               my $tmp_fh = $::_repository->temp_acquire(
-                                       'svn_hash');
-                               my $res;
-                               while ($res = sysread($fh, my $str, 1024)) {
-                                       my $out = syswrite($tmp_fh, $str, $res);
-                                       defined($out) && $out == $res
-                                               or croak("write ",
-                                                       Git::temp_path($tmp_fh),
-                                                       ": $!\n");
-                               }
-                               defined $res or croak $!;
-
-                               ($fh, $tmp_fh) = ($tmp_fh, $fh);
-                               Git::temp_release($tmp_fh, 1);
-                       }
-               }
-
-               $hash = $::_repository->hash_and_insert_object(
-                               Git::temp_path($fh));
-               $hash =~ /^[a-f\d]{40}$/ or die "not a sha1: $hash\n";
-
-               Git::temp_release($fb->{base}, 1);
-               Git::temp_release($fh, 1);
-       } else {
-               $hash = $fb->{blob} or die "no blob information\n";
-       }
-       $fb->{pool}->clear;
-       $self->{gii}->update($fb->{mode_b}, $hash, $path) or croak $!;
-       print "\t$fb->{action}\t$path\n" if $fb->{action} && ! $::_q;
-       undef;
-}
-
-sub abort_edit {
-       my $self = shift;
-       $self->{nr} = $self->{gii}->{nr};
-       delete $self->{gii};
-       $self->SUPER::abort_edit(@_);
-}
-
-sub close_edit {
-       my $self = shift;
-
-       if ($_preserve_empty_dirs) {
-               my @empty_dirs;
-
-               # Any entry flagged as empty that also has an associated
-               # dir_prop represents a newly created empty directory.
-               foreach my $i (keys %{$self->{empty}}) {
-                       push @empty_dirs, $i if exists $self->{dir_prop}->{$i};
-               }
-
-               # Search for directories that have become empty due subsequent
-               # file deletes.
-               push @empty_dirs, $self->find_empty_directories();
-
-               # Finally, add a placeholder file to each empty directory.
-               $self->add_placeholder_file($_) foreach (@empty_dirs);
-
-               $self->stash_placeholder_list();
-       }
-
-       $self->{git_commit_ok} = 1;
-       $self->{nr} = $self->{gii}->{nr};
-       delete $self->{gii};
-       $self->SUPER::close_edit(@_);
-}
-
-sub find_empty_directories {
-       my ($self) = @_;
-       my @empty_dirs;
-       my %dirs = map { dirname($_) => 1 } @deleted_gpath;
-
-       foreach my $dir (sort keys %dirs) {
-               next if $dir eq ".";
-
-               # If there have been any additions to this directory, there is
-               # no reason to check if it is empty.
-               my $skip_added = 0;
-               foreach my $t (qw/dir_prop file_prop/) {
-                       foreach my $path (keys %{ $self->{$t} }) {
-                               if (exists $self->{$t}->{dirname($path)}) {
-                                       $skip_added = 1;
-                                       last;
-                               }
-                       }
-                       last if $skip_added;
-               }
-               next if $skip_added;
-
-               # Use `git ls-tree` to get the filenames of this directory
-               # that existed prior to this particular commit.
-               my $ls = command('ls-tree', '-z', '--name-only',
-                                $self->{c}, "$dir/");
-               my %files = map { $_ => 1 } split(/\0/, $ls);
-
-               # Remove the filenames that were deleted during this commit.
-               delete $files{$_} foreach (@deleted_gpath);
-
-               # Report the directory if there are no filenames left.
-               push @empty_dirs, $dir unless (scalar %files);
-       }
-       @empty_dirs;
-}
-
-sub add_placeholder_file {
-       my ($self, $dir) = @_;
-       my $path = "$dir/$_placeholder_filename";
-       my $gpath = $self->git_path($path);
-
-       my $fh = $::_repository->temp_acquire($gpath);
-       my $hash = $::_repository->hash_and_insert_object(Git::temp_path($fh));
-       Git::temp_release($fh, 1);
-       $self->{gii}->update('100644', $hash, $gpath) or croak $!;
-
-       # The directory should no longer be considered empty.
-       delete $self->{empty}->{$dir} if exists $self->{empty}->{$dir};
-
-       # Keep track of any placeholder files we create.
-       $added_placeholder{$dir} = $path;
-}
-
-sub stash_placeholder_list {
-       my ($self) = @_;
-       my $k = "svn-remote.$repo_id.added-placeholder";
-       my $v = eval { command_oneline('config', '--get-all', $k) };
-       command_noisy('config', '--unset-all', $k) if $v;
-       foreach (values %added_placeholder) {
-               command_noisy('config', '--add', $k, $_);
-       }
-}
-
-package SVN::Git::Editor;
-use vars qw/@ISA $_rmdir $_cp_similarity $_find_copies_harder $_rename_limit/;
-use strict;
-use warnings;
-use Carp qw/croak/;
-use IO::File;
-
-sub new {
-       my ($class, $opts) = @_;
-       foreach (qw/svn_path r ra tree_a tree_b log editor_cb/) {
-               die "$_ required!\n" unless (defined $opts->{$_});
-       }
-
-       my $pool = SVN::Pool->new;
-       my $mods = generate_diff($opts->{tree_a}, $opts->{tree_b});
-       my $types = check_diff_paths($opts->{ra}, $opts->{svn_path},
-                                    $opts->{r}, $mods);
-
-       # $opts->{ra} functions should not be used after this:
-       my @ce  = $opts->{ra}->get_commit_editor($opts->{log},
-                                               $opts->{editor_cb}, $pool);
-       my $self = SVN::Delta::Editor->new(@ce, $pool);
-       bless $self, $class;
-       foreach (qw/svn_path r tree_a tree_b/) {
-               $self->{$_} = $opts->{$_};
-       }
-       $self->{url} = $opts->{ra}->{url};
-       $self->{mods} = $mods;
-       $self->{types} = $types;
-       $self->{pool} = $pool;
-       $self->{bat} = { '' => $self->open_root($self->{r}, $self->{pool}) };
-       $self->{rm} = { };
-       $self->{path_prefix} = length $self->{svn_path} ?
-                              "$self->{svn_path}/" : '';
-       $self->{config} = $opts->{config};
-       $self->{mergeinfo} = $opts->{mergeinfo};
-       return $self;
-}
-
-sub generate_diff {
-       my ($tree_a, $tree_b) = @_;
-       my @diff_tree = qw(diff-tree -z -r);
-       if ($_cp_similarity) {
-               push @diff_tree, "-C$_cp_similarity";
-       } else {
-               push @diff_tree, '-C';
-       }
-       push @diff_tree, '--find-copies-harder' if $_find_copies_harder;
-       push @diff_tree, "-l$_rename_limit" if defined $_rename_limit;
-       push @diff_tree, $tree_a, $tree_b;
-       my ($diff_fh, $ctx) = command_output_pipe(@diff_tree);
-       local $/ = "\0";
-       my $state = 'meta';
-       my @mods;
-       while (<$diff_fh>) {
-               chomp $_; # this gets rid of the trailing "\0"
-               if ($state eq 'meta' && /^:(\d{6})\s(\d{6})\s
-                                       ($::sha1)\s($::sha1)\s
-                                       ([MTCRAD])\d*$/xo) {
-                       push @mods, {   mode_a => $1, mode_b => $2,
-                                       sha1_a => $3, sha1_b => $4,
-                                       chg => $5 };
-                       if ($5 =~ /^(?:C|R)$/) {
-                               $state = 'file_a';
-                       } else {
-                               $state = 'file_b';
-                       }
-               } elsif ($state eq 'file_a') {
-                       my $x = $mods[$#mods] or croak "Empty array\n";
-                       if ($x->{chg} !~ /^(?:C|R)$/) {
-                               croak "Error parsing $_, $x->{chg}\n";
-                       }
-                       $x->{file_a} = $_;
-                       $state = 'file_b';
-               } elsif ($state eq 'file_b') {
-                       my $x = $mods[$#mods] or croak "Empty array\n";
-                       if (exists $x->{file_a} && $x->{chg} !~ /^(?:C|R)$/) {
-                               croak "Error parsing $_, $x->{chg}\n";
-                       }
-                       if (!exists $x->{file_a} && $x->{chg} =~ /^(?:C|R)$/) {
-                               croak "Error parsing $_, $x->{chg}\n";
-                       }
-                       $x->{file_b} = $_;
-                       $state = 'meta';
-               } else {
-                       croak "Error parsing $_\n";
-               }
-       }
-       command_close_pipe($diff_fh, $ctx);
-       \@mods;
-}
-
-sub check_diff_paths {
-       my ($ra, $pfx, $rev, $mods) = @_;
-       my %types;
-       $pfx .= '/' if length $pfx;
-
-       sub type_diff_paths {
-               my ($ra, $types, $path, $rev) = @_;
-               my @p = split m#/+#, $path;
-               my $c = shift @p;
-               unless (defined $types->{$c}) {
-                       $types->{$c} = $ra->check_path($c, $rev);
-               }
-               while (@p) {
-                       $c .= '/' . shift @p;
-                       next if defined $types->{$c};
-                       $types->{$c} = $ra->check_path($c, $rev);
-               }
-       }
-
-       foreach my $m (@$mods) {
-               foreach my $f (qw/file_a file_b/) {
-                       next unless defined $m->{$f};
-                       my ($dir) = ($m->{$f} =~ m#^(.*?)/?(?:[^/]+)$#);
-                       if (length $pfx.$dir && ! defined $types{$dir}) {
-                               type_diff_paths($ra, \%types, $pfx.$dir, $rev);
-                       }
-               }
-       }
-       \%types;
-}
-
-sub split_path {
-       return ($_[0] =~ m#^(.*?)/?([^/]+)$#);
-}
-
-sub repo_path {
-       my ($self, $path) = @_;
-       if (my $enc = $self->{pathnameencoding}) {
-               require Encode;
-               Encode::from_to($path, $enc, 'UTF-8');
-       }
-       $self->{path_prefix}.(defined $path ? $path : '');
-}
-
-sub url_path {
-       my ($self, $path) = @_;
-       if ($self->{url} =~ m#^https?://#) {
-               $path =~ s!([^~a-zA-Z0-9_./-])!uc sprintf("%%%02x",ord($1))!eg;
-       }
-       $self->{url} . '/' . $self->repo_path($path);
-}
-
-sub rmdirs {
-       my ($self) = @_;
-       my $rm = $self->{rm};
-       delete $rm->{''}; # we never delete the url we're tracking
-       return unless %$rm;
-
-       foreach (keys %$rm) {
-               my @d = split m#/#, $_;
-               my $c = shift @d;
-               $rm->{$c} = 1;
-               while (@d) {
-                       $c .= '/' . shift @d;
-                       $rm->{$c} = 1;
-               }
-       }
-       delete $rm->{$self->{svn_path}};
-       delete $rm->{''}; # we never delete the url we're tracking
-       return unless %$rm;
-
-       my ($fh, $ctx) = command_output_pipe(qw/ls-tree --name-only -r -z/,
-                                            $self->{tree_b});
-       local $/ = "\0";
-       while (<$fh>) {
-               chomp;
-               my @dn = split m#/#, $_;
-               while (pop @dn) {
-                       delete $rm->{join '/', @dn};
-               }
-               unless (%$rm) {
-                       close $fh;
-                       return;
-               }
-       }
-       command_close_pipe($fh, $ctx);
-
-       my ($r, $p, $bat) = ($self->{r}, $self->{pool}, $self->{bat});
-       foreach my $d (sort { $b =~ tr#/#/# <=> $a =~ tr#/#/# } keys %$rm) {
-               $self->close_directory($bat->{$d}, $p);
-               my ($dn) = ($d =~ m#^(.*?)/?(?:[^/]+)$#);
-               print "\tD+\t$d/\n" unless $::_q;
-               $self->SUPER::delete_entry($d, $r, $bat->{$dn}, $p);
-               delete $bat->{$d};
-       }
-}
-
-sub open_or_add_dir {
-       my ($self, $full_path, $baton, $deletions) = @_;
-       my $t = $self->{types}->{$full_path};
-       if (!defined $t) {
-               die "$full_path not known in r$self->{r} or we have a bug!\n";
-       }
-       {
-               no warnings 'once';
-               # SVN::Node::none and SVN::Node::file are used only once,
-               # so we're shutting up Perl's warnings about them.
-               if ($t == $SVN::Node::none || defined($deletions->{$full_path})) {
-                       return $self->add_directory($full_path, $baton,
-                           undef, -1, $self->{pool});
-               } elsif ($t == $SVN::Node::dir) {
-                       return $self->open_directory($full_path, $baton,
-                           $self->{r}, $self->{pool});
-               } # no warnings 'once'
-               print STDERR "$full_path already exists in repository at ",
-                   "r$self->{r} and it is not a directory (",
-                   ($t == $SVN::Node::file ? 'file' : 'unknown'),"/$t)\n";
-       } # no warnings 'once'
-       exit 1;
-}
-
-sub ensure_path {
-       my ($self, $path, $deletions) = @_;
-       my $bat = $self->{bat};
-       my $repo_path = $self->repo_path($path);
-       return $bat->{''} unless (length $repo_path);
-
-       my @p = split m#/+#, $repo_path;
-       my $c = shift @p;
-       $bat->{$c} ||= $self->open_or_add_dir($c, $bat->{''}, $deletions);
-       while (@p) {
-               my $c0 = $c;
-               $c .= '/' . shift @p;
-               $bat->{$c} ||= $self->open_or_add_dir($c, $bat->{$c0}, $deletions);
-       }
-       return $bat->{$c};
-}
-
-# Subroutine to convert a globbing pattern to a regular expression.
-# From perl cookbook.
-sub glob2pat {
-       my $globstr = shift;
-       my %patmap = ('*' => '.*', '?' => '.', '[' => '[', ']' => ']');
-       $globstr =~ s{(.)} { $patmap{$1} || "\Q$1" }ge;
-       return '^' . $globstr . '$';
-}
-
-sub check_autoprop {
-       my ($self, $pattern, $properties, $file, $fbat) = @_;
-       # Convert the globbing pattern to a regular expression.
-       my $regex = glob2pat($pattern);
-       # Check if the pattern matches the file name.
-       if($file =~ m/($regex)/) {
-               # Parse the list of properties to set.
-               my @props = split(/;/, $properties);
-               foreach my $prop (@props) {
-                       # Parse 'name=value' syntax and set the property.
-                       if ($prop =~ /([^=]+)=(.*)/) {
-                               my ($n,$v) = ($1,$2);
-                               for ($n, $v) {
-                                       s/^\s+//; s/\s+$//;
-                               }
-                               $self->change_file_prop($fbat, $n, $v);
-                       }
-               }
-       }
-}
-
-sub apply_autoprops {
-       my ($self, $file, $fbat) = @_;
-       my $conf_t = ${$self->{config}}{'config'};
-       no warnings 'once';
-       # Check [miscellany]/enable-auto-props in svn configuration.
-       if (SVN::_Core::svn_config_get_bool(
-               $conf_t,
-               $SVN::_Core::SVN_CONFIG_SECTION_MISCELLANY,
-               $SVN::_Core::SVN_CONFIG_OPTION_ENABLE_AUTO_PROPS,
-               0)) {
-               # Auto-props are enabled.  Enumerate them to look for matches.
-               my $callback = sub {
-                       $self->check_autoprop($_[0], $_[1], $file, $fbat);
-               };
-               SVN::_Core::svn_config_enumerate(
-                       $conf_t,
-                       $SVN::_Core::SVN_CONFIG_SECTION_AUTO_PROPS,
-                       $callback);
-       }
-}
-
-sub A {
-       my ($self, $m, $deletions) = @_;
-       my ($dir, $file) = split_path($m->{file_b});
-       my $pbat = $self->ensure_path($dir, $deletions);
-       my $fbat = $self->add_file($self->repo_path($m->{file_b}), $pbat,
-                                       undef, -1);
-       print "\tA\t$m->{file_b}\n" unless $::_q;
-       $self->apply_autoprops($file, $fbat);
-       $self->chg_file($fbat, $m);
-       $self->close_file($fbat,undef,$self->{pool});
-}
-
-sub C {
-       my ($self, $m, $deletions) = @_;
-       my ($dir, $file) = split_path($m->{file_b});
-       my $pbat = $self->ensure_path($dir, $deletions);
-       my $fbat = $self->add_file($self->repo_path($m->{file_b}), $pbat,
-                               $self->url_path($m->{file_a}), $self->{r});
-       print "\tC\t$m->{file_a} => $m->{file_b}\n" unless $::_q;
-       $self->chg_file($fbat, $m);
-       $self->close_file($fbat,undef,$self->{pool});
-}
-
-sub delete_entry {
-       my ($self, $path, $pbat) = @_;
-       my $rpath = $self->repo_path($path);
-       my ($dir, $file) = split_path($rpath);
-       $self->{rm}->{$dir} = 1;
-       $self->SUPER::delete_entry($rpath, $self->{r}, $pbat, $self->{pool});
-}
-
-sub R {
-       my ($self, $m, $deletions) = @_;
-       my ($dir, $file) = split_path($m->{file_b});
-       my $pbat = $self->ensure_path($dir, $deletions);
-       my $fbat = $self->add_file($self->repo_path($m->{file_b}), $pbat,
-                               $self->url_path($m->{file_a}), $self->{r});
-       print "\tR\t$m->{file_a} => $m->{file_b}\n" unless $::_q;
-       $self->apply_autoprops($file, $fbat);
-       $self->chg_file($fbat, $m);
-       $self->close_file($fbat,undef,$self->{pool});
-
-       ($dir, $file) = split_path($m->{file_a});
-       $pbat = $self->ensure_path($dir, $deletions);
-       $self->delete_entry($m->{file_a}, $pbat);
-}
-
-sub M {
-       my ($self, $m, $deletions) = @_;
-       my ($dir, $file) = split_path($m->{file_b});
-       my $pbat = $self->ensure_path($dir, $deletions);
-       my $fbat = $self->open_file($self->repo_path($m->{file_b}),
-                               $pbat,$self->{r},$self->{pool});
-       print "\t$m->{chg}\t$m->{file_b}\n" unless $::_q;
-       $self->chg_file($fbat, $m);
-       $self->close_file($fbat,undef,$self->{pool});
-}
-
-sub T { shift->M(@_) }
-
-sub change_file_prop {
-       my ($self, $fbat, $pname, $pval) = @_;
-       $self->SUPER::change_file_prop($fbat, $pname, $pval, $self->{pool});
-}
-
-sub change_dir_prop {
-       my ($self, $pbat, $pname, $pval) = @_;
-       $self->SUPER::change_dir_prop($pbat, $pname, $pval, $self->{pool});
-}
-
-sub _chg_file_get_blob ($$$$) {
-       my ($self, $fbat, $m, $which) = @_;
-       my $fh = $::_repository->temp_acquire("git_blob_$which");
-       if ($m->{"mode_$which"} =~ /^120/) {
-               print $fh 'link ' or croak $!;
-               $self->change_file_prop($fbat,'svn:special','*');
-       } elsif ($m->{mode_a} =~ /^120/ && $m->{"mode_$which"} !~ /^120/) {
-               $self->change_file_prop($fbat,'svn:special',undef);
-       }
-       my $blob = $m->{"sha1_$which"};
-       return ($fh,) if ($blob =~ /^0{40}$/);
-       my $size = $::_repository->cat_blob($blob, $fh);
-       croak "Failed to read object $blob" if ($size < 0);
-       $fh->flush == 0 or croak $!;
-       seek $fh, 0, 0 or croak $!;
-
-       my $exp = ::md5sum($fh);
-       seek $fh, 0, 0 or croak $!;
-       return ($fh, $exp);
-}
-
-sub chg_file {
-       my ($self, $fbat, $m) = @_;
-       if ($m->{mode_b} =~ /755$/ && $m->{mode_a} !~ /755$/) {
-               $self->change_file_prop($fbat,'svn:executable','*');
-       } elsif ($m->{mode_b} !~ /755$/ && $m->{mode_a} =~ /755$/) {
-               $self->change_file_prop($fbat,'svn:executable',undef);
-       }
-       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, $exp_a, $pool);
-       if (-s $fh_a) {
-               my $txstream = SVN::TxDelta::new ($fh_a, $fh_b, $pool);
-               my $res = SVN::TxDelta::send_txstream($txstream, @$atd, $pool);
-               if (defined $res) {
-                       die "Unexpected result from send_txstream: $res\n",
-                           "(SVN::Core::VERSION: $SVN::Core::VERSION)\n";
-               }
-       } 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);
-       $pool->clear;
-}
-
-sub D {
-       my ($self, $m, $deletions) = @_;
-       my ($dir, $file) = split_path($m->{file_b});
-       my $pbat = $self->ensure_path($dir, $deletions);
-       print "\tD\t$m->{file_b}\n" unless $::_q;
-       $self->delete_entry($m->{file_b}, $pbat);
-}
-
-sub close_edit {
-       my ($self) = @_;
-       my ($p,$bat) = ($self->{pool}, $self->{bat});
-       foreach (sort { $b =~ tr#/#/# <=> $a =~ tr#/#/# } keys %$bat) {
-               next if $_ eq '';
-               $self->close_directory($bat->{$_}, $p);
-       }
-       $self->close_directory($bat->{''}, $p);
-       $self->SUPER::close_edit($p);
-       $p->clear;
-}
-
-sub abort_edit {
-       my ($self) = @_;
-       $self->SUPER::abort_edit($self->{pool});
-}
-
-sub DESTROY {
-       my $self = shift;
-       $self->SUPER::DESTROY(@_);
-       $self->{pool}->clear;
-}
-
-# this drives the editor
-sub apply_diff {
-       my ($self) = @_;
-       my $mods = $self->{mods};
-       my %o = ( D => 0, C => 1, R => 2, A => 3, M => 4, T => 5 );
-       my %deletions;
-
-       foreach my $m (@$mods) {
-               if ($m->{chg} eq "D") {
-                       $deletions{$m->{file_b}} = 1;
-               }
-       }
-
-       foreach my $m (sort { $o{$a->{chg}} <=> $o{$b->{chg}} } @$mods) {
-               my $f = $m->{chg};
-               if (defined $o{$f}) {
-                       $self->$f($m, \%deletions);
-               } else {
-                       fatal("Invalid change type: $f");
-               }
-       }
-
-       if (defined($self->{mergeinfo})) {
-               $self->change_dir_prop($self->{bat}{''}, "svn:mergeinfo",
-                                      $self->{mergeinfo});
-       }
-       $self->rmdirs if $_rmdir;
-       if (@$mods == 0 && !defined($self->{mergeinfo})) {
-               $self->abort_edit;
-       } else {
-               $self->close_edit;
-       }
-       return scalar @$mods;
-}
-
-package Git::SVN::Ra;
-use vars qw/@ISA $config_dir $_ignore_refs_regex $_log_window_size/;
-use strict;
-use warnings;
-my ($ra_invalid, $can_do_switch, %ignored_err, $RA);
-
-BEGIN {
-       # enforce temporary pool usage for some simple functions
-       no strict 'refs';
-       for my $f (qw/rev_proplist get_latest_revnum get_uuid get_repos_root
-                     get_file/) {
-               my $SUPER = "SUPER::$f";
-               *$f = sub {
-                       my $self = shift;
-                       my $pool = SVN::Pool->new;
-                       my @ret = $self->$SUPER(@_,$pool);
-                       $pool->clear;
-                       wantarray ? @ret : $ret[0];
-               };
-       }
-}
-
-sub _auth_providers () {
-       my @rv = (
-         SVN::Client::get_simple_provider(),
-         SVN::Client::get_ssl_server_trust_file_provider(),
-         SVN::Client::get_simple_prompt_provider(
-           \&Git::SVN::Prompt::simple, 2),
-         SVN::Client::get_ssl_client_cert_file_provider(),
-         SVN::Client::get_ssl_client_cert_prompt_provider(
-           \&Git::SVN::Prompt::ssl_client_cert, 2),
-         SVN::Client::get_ssl_client_cert_pw_file_provider(),
-         SVN::Client::get_ssl_client_cert_pw_prompt_provider(
-           \&Git::SVN::Prompt::ssl_client_cert_pw, 2),
-         SVN::Client::get_username_provider(),
-         SVN::Client::get_ssl_server_trust_prompt_provider(
-           \&Git::SVN::Prompt::ssl_server_trust),
-         SVN::Client::get_username_prompt_provider(
-           \&Git::SVN::Prompt::username, 2)
-       );
-
-       # earlier 1.6.x versions would segfault, and <= 1.5.x didn't have
-       # this function
-       if (::compare_svn_version('1.6.12') > 0) {
-               my $config = SVN::Core::config_get_config($config_dir);
-               my ($p, @a);
-               # config_get_config returns all config files from
-               # ~/.subversion, auth_get_platform_specific_client_providers
-               # just wants the config "file".
-               @a = ($config->{'config'}, undef);
-               $p = SVN::Core::auth_get_platform_specific_client_providers(@a);
-               # Insert the return value from
-               # auth_get_platform_specific_providers
-               unshift @rv, @$p;
-       }
-       \@rv;
-}
-
-sub escape_uri_only {
-       my ($uri) = @_;
-       my @tmp;
-       foreach (split m{/}, $uri) {
-               s/([^~\w.%+-]|%(?![a-fA-F0-9]{2}))/sprintf("%%%02X",ord($1))/eg;
-               push @tmp, $_;
-       }
-       join('/', @tmp);
-}
-
-sub escape_url {
-       my ($url) = @_;
-       if ($url =~ m#^(https?)://([^/]+)(.*)$#) {
-               my ($scheme, $domain, $uri) = ($1, $2, escape_uri_only($3));
-               $url = "$scheme://$domain$uri";
-       }
-       $url;
-}
-
-sub new {
-       my ($class, $url) = @_;
-       $url =~ s!/+$!!;
-       return $RA if ($RA && $RA->{url} eq $url);
-
-       ::_req_svn();
-
-       SVN::_Core::svn_config_ensure($config_dir, undef);
-       my ($baton, $callbacks) = SVN::Core::auth_open_helper(_auth_providers);
-       my $config = SVN::Core::config_get_config($config_dir);
-       $RA = undef;
-       my $dont_store_passwords = 1;
-       my $conf_t = ${$config}{'config'};
-       {
-               no warnings 'once';
-               # The usage of $SVN::_Core::SVN_CONFIG_* variables
-               # produces warnings that variables are used only once.
-               # I had not found the better way to shut them up, so
-               # the warnings of type 'once' are disabled in this block.
-               if (SVN::_Core::svn_config_get_bool($conf_t,
-                   $SVN::_Core::SVN_CONFIG_SECTION_AUTH,
-                   $SVN::_Core::SVN_CONFIG_OPTION_STORE_PASSWORDS,
-                   1) == 0) {
-                       SVN::_Core::svn_auth_set_parameter($baton,
-                           $SVN::_Core::SVN_AUTH_PARAM_DONT_STORE_PASSWORDS,
-                           bless (\$dont_store_passwords, "_p_void"));
-               }
-               if (SVN::_Core::svn_config_get_bool($conf_t,
-                   $SVN::_Core::SVN_CONFIG_SECTION_AUTH,
-                   $SVN::_Core::SVN_CONFIG_OPTION_STORE_AUTH_CREDS,
-                   1) == 0) {
-                       $Git::SVN::Prompt::_no_auth_cache = 1;
-               }
-       } # no warnings 'once'
-       my $self = SVN::Ra->new(url => escape_url($url), auth => $baton,
-                             config => $config,
-                             pool => SVN::Pool->new,
-                             auth_provider_callbacks => $callbacks);
-       $self->{url} = $url;
-       $self->{svn_path} = $url;
-       $self->{repos_root} = $self->get_repos_root;
-       $self->{svn_path} =~ s#^\Q$self->{repos_root}\E(/|$)##;
-       $self->{cache} = { check_path => { r => 0, data => {} },
-                          get_dir => { r => 0, data => {} } };
-       $RA = bless $self, $class;
-}
-
-sub check_path {
-       my ($self, $path, $r) = @_;
-       my $cache = $self->{cache}->{check_path};
-       if ($r == $cache->{r} && exists $cache->{data}->{$path}) {
-               return $cache->{data}->{$path};
-       }
-       my $pool = SVN::Pool->new;
-       my $t = $self->SUPER::check_path($path, $r, $pool);
-       $pool->clear;
-       if ($r != $cache->{r}) {
-               %{$cache->{data}} = ();
-               $cache->{r} = $r;
-       }
-       $cache->{data}->{$path} = $t;
-}
-
-sub get_dir {
-       my ($self, $dir, $r) = @_;
-       my $cache = $self->{cache}->{get_dir};
-       if ($r == $cache->{r}) {
-               if (my $x = $cache->{data}->{$dir}) {
-                       return wantarray ? @$x : $x->[0];
-               }
-       }
-       my $pool = SVN::Pool->new;
-       my ($d, undef, $props) = $self->SUPER::get_dir($dir, $r, $pool);
-       my %dirents = map { $_ => { kind => $d->{$_}->kind } } keys %$d;
-       $pool->clear;
-       if ($r != $cache->{r}) {
-               %{$cache->{data}} = ();
-               $cache->{r} = $r;
-       }
-       $cache->{data}->{$dir} = [ \%dirents, $r, $props ];
-       wantarray ? (\%dirents, $r, $props) : \%dirents;
-}
-
-sub DESTROY {
-       # do not call the real DESTROY since we store ourselves in $RA
-}
-
-# get_log(paths, start, end, limit,
-#         discover_changed_paths, strict_node_history, receiver)
-sub get_log {
-       my ($self, @args) = @_;
-       my $pool = SVN::Pool->new;
-
-       # svn_log_changed_path_t objects passed to get_log are likely to be
-       # overwritten even if only the refs are copied to an external variable,
-       # so we should dup the structures in their entirety.  Using an
-       # externally passed pool (instead of our temporary and quickly cleared
-       # pool in Git::SVN::Ra) does not help matters at all...
-       my $receiver = pop @args;
-       my $prefix = "/".$self->{svn_path};
-       $prefix =~ s#/+($)##;
-       my $prefix_regex = qr#^\Q$prefix\E#;
-       push(@args, sub {
-               my ($paths) = $_[0];
-               return &$receiver(@_) unless $paths;
-               $_[0] = ();
-               foreach my $p (keys %$paths) {
-                       my $i = $paths->{$p};
-                       # Make path relative to our url, not repos_root
-                       $p =~ s/$prefix_regex//;
-                       my %s = map { $_ => $i->$_; }
-                               qw/copyfrom_path copyfrom_rev action/;
-                       if ($s{'copyfrom_path'}) {
-                               $s{'copyfrom_path'} =~ s/$prefix_regex//;
-                       }
-                       $_[0]{$p} = \%s;
-               }
-               &$receiver(@_);
-       });
-
-
-       # the limit parameter was not supported in SVN 1.1.x, so we
-       # drop it.  Therefore, the receiver callback passed to it
-       # is made aware of this limitation by being wrapped if
-       # the limit passed to is being wrapped.
-       if (::compare_svn_version('1.2.0') <= 0) {
-               my $limit = splice(@args, 3, 1);
-               if ($limit > 0) {
-                       my $receiver = pop @args;
-                       push(@args, sub { &$receiver(@_) if (--$limit >= 0) });
-               }
-       }
-       my $ret = $self->SUPER::get_log(@args, $pool);
-       $pool->clear;
-       $ret;
-}
-
-sub trees_match {
-       my ($self, $url1, $rev1, $url2, $rev2) = @_;
-       my $ctx = SVN::Client->new(auth => _auth_providers);
-       my $out = IO::File->new_tmpfile;
-
-       # older SVN (1.1.x) doesn't take $pool as the last parameter for
-       # $ctx->diff(), so we'll create a default one
-       my $pool = SVN::Pool->new_default_sub;
-
-       $ra_invalid = 1; # this will open a new SVN::Ra connection to $url1
-       $ctx->diff([], $url1, $rev1, $url2, $rev2, 1, 1, 0, $out, $out);
-       $out->flush;
-       my $ret = (($out->stat)[7] == 0);
-       close $out or croak $!;
-
-       $ret;
-}
-
-sub get_commit_editor {
-       my ($self, $log, $cb, $pool) = @_;
-
-       my @lock = (::compare_svn_version('1.2.0') >= 0) ? (undef, 0) : ();
-       $self->SUPER::get_commit_editor($log, $cb, @lock, $pool);
-}
-
-sub gs_do_update {
-       my ($self, $rev_a, $rev_b, $gs, $editor) = @_;
-       my $new = ($rev_a == $rev_b);
-       my $path = $gs->{path};
-
-       if ($new && -e $gs->{index}) {
-               unlink $gs->{index} or die
-                 "Couldn't unlink index: $gs->{index}: $!\n";
-       }
-       my $pool = SVN::Pool->new;
-       $editor->set_path_strip($path);
-       my (@pc) = split m#/#, $path;
-       my $reporter = $self->do_update($rev_b, (@pc ? shift @pc : ''),
-                                       1, $editor, $pool);
-       my @lock = (::compare_svn_version('1.2.0') >= 0) ? (undef) : ();
-
-       # Since we can't rely on svn_ra_reparent being available, we'll
-       # just have to do some magic with set_path to make it so
-       # we only want a partial path.
-       my $sp = '';
-       my $final = join('/', @pc);
-       while (@pc) {
-               $reporter->set_path($sp, $rev_b, 0, @lock, $pool);
-               $sp .= '/' if length $sp;
-               $sp .= shift @pc;
-       }
-       die "BUG: '$sp' != '$final'\n" if ($sp ne $final);
-
-       $reporter->set_path($sp, $rev_a, $new, @lock, $pool);
-
-       $reporter->finish_report($pool);
-       $pool->clear;
-       $editor->{git_commit_ok};
-}
-
-# this requires SVN 1.4.3 or later (do_switch didn't work before 1.4.3, and
-# svn_ra_reparent didn't work before 1.4)
-sub gs_do_switch {
-       my ($self, $rev_a, $rev_b, $gs, $url_b, $editor) = @_;
-       my $path = $gs->{path};
-       my $pool = SVN::Pool->new;
-
-       my $full_url = $self->{url};
-       my $old_url = $full_url;
-       $full_url .= '/' . $path if length $path;
-       my ($ra, $reparented);
-
-       if ($old_url =~ m#^svn(\+ssh)?://# ||
-           ($full_url =~ m#^https?://# &&
-            escape_url($full_url) ne $full_url)) {
-               $_[0] = undef;
-               $self = undef;
-               $RA = undef;
-               $ra = Git::SVN::Ra->new($full_url);
-               $ra_invalid = 1;
-       } elsif ($old_url ne $full_url) {
-               SVN::_Ra::svn_ra_reparent($self->{session}, $full_url, $pool);
-               $self->{url} = $full_url;
-               $reparented = 1;
-       }
-
-       $ra ||= $self;
-       $url_b = escape_url($url_b);
-       my $reporter = $ra->do_switch($rev_b, '', 1, $url_b, $editor, $pool);
-       my @lock = (::compare_svn_version('1.2.0') >= 0) ? (undef) : ();
-       $reporter->set_path('', $rev_a, 0, @lock, $pool);
-       $reporter->finish_report($pool);
-
-       if ($reparented) {
-               SVN::_Ra::svn_ra_reparent($self->{session}, $old_url, $pool);
-               $self->{url} = $old_url;
-       }
-
-       $pool->clear;
-       $editor->{git_commit_ok};
-}
-
-sub longest_common_path {
-       my ($gsv, $globs) = @_;
-       my %common;
-       my $common_max = scalar @$gsv;
-
-       foreach my $gs (@$gsv) {
-               my @tmp = split m#/#, $gs->{path};
-               my $p = '';
-               foreach (@tmp) {
-                       $p .= length($p) ? "/$_" : $_;
-                       $common{$p} ||= 0;
-                       $common{$p}++;
-               }
-       }
-       $globs ||= [];
-       $common_max += scalar @$globs;
-       foreach my $glob (@$globs) {
-               my @tmp = split m#/#, $glob->{path}->{left};
-               my $p = '';
-               foreach (@tmp) {
-                       $p .= length($p) ? "/$_" : $_;
-                       $common{$p} ||= 0;
-                       $common{$p}++;
-               }
-       }
-
-       my $longest_path = '';
-       foreach (sort {length $b <=> length $a} keys %common) {
-               if ($common{$_} == $common_max) {
-                       $longest_path = $_;
-                       last;
-               }
-       }
-       $longest_path;
-}
-
-sub gs_fetch_loop_common {
-       my ($self, $base, $head, $gsv, $globs) = @_;
-       return if ($base > $head);
-       my $inc = $_log_window_size;
-       my ($min, $max) = ($base, $head < $base + $inc ? $head : $base + $inc);
-       my $longest_path = longest_common_path($gsv, $globs);
-       my $ra_url = $self->{url};
-       my $find_trailing_edge;
-       while (1) {
-               my %revs;
-               my $err;
-               my $err_handler = $SVN::Error::handler;
-               $SVN::Error::handler = sub {
-                       ($err) = @_;
-                       skip_unknown_revs($err);
-               };
-               sub _cb {
-                       my ($paths, $r, $author, $date, $log) = @_;
-                       [ $paths,
-                         { author => $author, date => $date, log => $log } ];
-               }
-               $self->get_log([$longest_path], $min, $max, 0, 1, 1,
-                              sub { $revs{$_[1]} = _cb(@_) });
-               if ($err) {
-                       print "Checked through r$max\r";
-               } else {
-                       $find_trailing_edge = 1;
-               }
-               if ($err and $find_trailing_edge) {
-                       print STDERR "Path '$longest_path' ",
-                                    "was probably deleted:\n",
-                                    $err->expanded_message,
-                                    "\nWill attempt to follow ",
-                                    "revisions r$min .. r$max ",
-                                    "committed before the deletion\n";
-                       my $hi = $max;
-                       while (--$hi >= $min) {
-                               my $ok;
-                               $self->get_log([$longest_path], $min, $hi,
-                                              0, 1, 1, sub {
-                                              $ok = $_[1];
-                                              $revs{$_[1]} = _cb(@_) });
-                               if ($ok) {
-                                       print STDERR "r$min .. r$ok OK\n";
-                                       last;
-                               }
-                       }
-                       $find_trailing_edge = 0;
-               }
-               $SVN::Error::handler = $err_handler;
-
-               my %exists = map { $_->{path} => $_ } @$gsv;
-               foreach my $r (sort {$a <=> $b} keys %revs) {
-                       my ($paths, $logged) = @{$revs{$r}};
-
-                       foreach my $gs ($self->match_globs(\%exists, $paths,
-                                                          $globs, $r)) {
-                               if ($gs->rev_map_max >= $r) {
-                                       next;
-                               }
-                               next unless $gs->match_paths($paths, $r);
-                               $gs->{logged_rev_props} = $logged;
-                               if (my $last_commit = $gs->last_commit) {
-                                       $gs->assert_index_clean($last_commit);
-                               }
-                               my $log_entry = $gs->do_fetch($paths, $r);
-                               if ($log_entry) {
-                                       $gs->do_git_commit($log_entry);
-                               }
-                               $INDEX_FILES{$gs->{index}} = 1;
-                       }
-                       foreach my $g (@$globs) {
-                               my $k = "svn-remote.$g->{remote}." .
-                                       "$g->{t}-maxRev";
-                               Git::SVN::tmp_config($k, $r);
-                       }
-                       if ($ra_invalid) {
-                               $_[0] = undef;
-                               $self = undef;
-                               $RA = undef;
-                               $self = Git::SVN::Ra->new($ra_url);
-                               $ra_invalid = undef;
-                       }
-               }
-               # pre-fill the .rev_db since it'll eventually get filled in
-               # with '0' x40 if something new gets committed
-               foreach my $gs (@$gsv) {
-                       next if $gs->rev_map_max >= $max;
-                       next if defined $gs->rev_map_get($max);
-                       $gs->rev_map_set($max, 0 x40);
-               }
-               foreach my $g (@$globs) {
-                       my $k = "svn-remote.$g->{remote}.$g->{t}-maxRev";
-                       Git::SVN::tmp_config($k, $max);
-               }
-               last if $max >= $head;
-               $min = $max + 1;
-               $max += $inc;
-               $max = $head if ($max > $head);
-       }
-       Git::SVN::gc();
-}
-
-sub get_dir_globbed {
-       my ($self, $left, $depth, $r) = @_;
-
-       my @x = eval { $self->get_dir($left, $r) };
-       return unless scalar @x == 3;
-       my $dirents = $x[0];
-       my @finalents;
-       foreach my $de (keys %$dirents) {
-               next if $dirents->{$de}->{kind} != $SVN::Node::dir;
-               if ($depth > 1) {
-                       my @args = ("$left/$de", $depth - 1, $r);
-                       foreach my $dir ($self->get_dir_globbed(@args)) {
-                               push @finalents, "$de/$dir";
-                       }
-               } else {
-                       push @finalents, $de;
-               }
-       }
-       @finalents;
-}
-
-# return value: 0 -- don't ignore, 1 -- ignore
-sub is_ref_ignored {
-       my ($g, $p) = @_;
-       my $refname = $g->{ref}->full_path($p);
-       return 1 if defined($g->{ignore_refs_regex}) &&
-                   $refname =~ m!$g->{ignore_refs_regex}!;
-       return 0 unless defined($_ignore_refs_regex);
-       return 1 if $refname =~ m!$_ignore_refs_regex!o;
-       return 0;
-}
-
-sub match_globs {
-       my ($self, $exists, $paths, $globs, $r) = @_;
-
-       sub get_dir_check {
-               my ($self, $exists, $g, $r) = @_;
-
-               my @dirs = $self->get_dir_globbed($g->{path}->{left},
-                                                 $g->{path}->{depth},
-                                                 $r);
-
-               foreach my $de (@dirs) {
-                       my $p = $g->{path}->full_path($de);
-                       next if $exists->{$p};
-                       next if (length $g->{path}->{right} &&
-                                ($self->check_path($p, $r) !=
-                                 $SVN::Node::dir));
-                       next unless $p =~ /$g->{path}->{regex}/;
-                       $exists->{$p} = Git::SVN->init($self->{url}, $p, undef,
-                                        $g->{ref}->full_path($de), 1);
-               }
-       }
-       foreach my $g (@$globs) {
-               if (my $path = $paths->{"/$g->{path}->{left}"}) {
-                       if ($path->{action} =~ /^[AR]$/) {
-                               get_dir_check($self, $exists, $g, $r);
-                       }
-               }
-               foreach (keys %$paths) {
-                       if (/$g->{path}->{left_regex}/ &&
-                           !/$g->{path}->{regex}/) {
-                               next if $paths->{$_}->{action} !~ /^[AR]$/;
-                               get_dir_check($self, $exists, $g, $r);
-                       }
-                       next unless /$g->{path}->{regex}/;
-                       my $p = $1;
-                       my $pathname = $g->{path}->full_path($p);
-                       next if is_ref_ignored($g, $p);
-                       next if $exists->{$pathname};
-                       next if ($self->check_path($pathname, $r) !=
-                                $SVN::Node::dir);
-                       $exists->{$pathname} = Git::SVN->init(
-                                             $self->{url}, $pathname, undef,
-                                             $g->{ref}->full_path($p), 1);
-               }
-               my $c = '';
-               foreach (split m#/#, $g->{path}->{left}) {
-                       $c .= "/$_";
-                       next unless ($paths->{$c} &&
-                                    ($paths->{$c}->{action} =~ /^[AR]$/));
-                       get_dir_check($self, $exists, $g, $r);
-               }
-       }
-       values %$exists;
-}
-
-sub minimize_url {
-       my ($self) = @_;
-       return $self->{url} if ($self->{url} eq $self->{repos_root});
-       my $url = $self->{repos_root};
-       my @components = split(m!/!, $self->{svn_path});
-       my $c = '';
-       do {
-               $url .= "/$c" if length $c;
-               eval {
-                       my $ra = (ref $self)->new($url);
-                       my $latest = $ra->get_latest_revnum;
-                       $ra->get_log("", $latest, 0, 1, 0, 1, sub {});
-               };
-       } while ($@ && ($c = shift @components));
-       $url;
-}
-
-sub can_do_switch {
-       my $self = shift;
-       unless (defined $can_do_switch) {
-               my $pool = SVN::Pool->new;
-               my $rep = eval {
-                       $self->do_switch(1, '', 0, $self->{url},
-                                        SVN::Delta::Editor->new, $pool);
-               };
-               if ($@) {
-                       $can_do_switch = 0;
-               } else {
-                       $rep->abort_report($pool);
-                       $can_do_switch = 1;
-               }
-               $pool->clear;
-       }
-       $can_do_switch;
-}
-
-sub skip_unknown_revs {
-       my ($err) = @_;
-       my $errno = $err->apr_err();
-       # Maybe the branch we're tracking didn't
-       # exist when the repo started, so it's
-       # not an error if it doesn't, just continue
-       #
-       # Wonderfully consistent library, eh?
-       # 160013 - svn:// and file://
-       # 175002 - http(s)://
-       # 175007 - http(s):// (this repo required authorization, too...)
-       #   More codes may be discovered later...
-       if ($errno == 175007 || $errno == 175002 || $errno == 160013) {
-               my $err_key = $err->expanded_message;
-               # revision numbers change every time, filter them out
-               $err_key =~ s/\d+/\0/g;
-               $err_key = "$errno\0$err_key";
-               unless ($ignored_err{$err_key}) {
-                       warn "W: Ignoring error from SVN, path probably ",
-                            "does not exist: ($errno): ",
-                            $err->expanded_message,"\n";
-                       warn "W: Do not be alarmed at the above message ",
-                            "git-svn is just searching aggressively for ",
-                            "old history.\n",
-                            "This may take a while on large repositories\n";
-                       $ignored_err{$err_key} = 1;
-               }
-               return;
-       }
-       die "Error from SVN, ($errno): ", $err->expanded_message,"\n";
-}
-
 package Git::SVN::Log;
 use strict;
 use warnings;