+sub libsvn_load {
+ return unless $_use_lib;
+ $_use_lib = eval {
+ require SVN::Core;
+ if ($SVN::Core::VERSION lt '1.2.1') {
+ die "Need SVN::Core 1.2.1 or better ",
+ "(got $SVN::Core::VERSION) ",
+ "Falling back to command-line svn\n";
+ }
+ require SVN::Ra;
+ require SVN::Delta;
+ push @SVN::Git::Editor::ISA, 'SVN::Delta::Editor';
+ my $kill_stupid_warnings = $SVN::Node::none.$SVN::Node::file.
+ $SVN::Node::dir.$SVN::Node::unknown.
+ $SVN::Node::none.$SVN::Node::file.
+ $SVN::Node::dir.$SVN::Node::unknown;
+ 1;
+ };
+}
+
+sub libsvn_connect {
+ my ($url) = @_;
+ my $auth = SVN::Core::auth_open([SVN::Client::get_simple_provider(),
+ SVN::Client::get_ssl_server_trust_file_provider(),
+ SVN::Client::get_username_provider()]);
+ my $s = eval { SVN::Ra->new(url => $url, auth => $auth) };
+ return $s;
+}
+
+sub libsvn_get_file {
+ my ($gui, $f, $rev) = @_;
+ my $p = $f;
+ return unless ($p =~ s#^\Q$SVN_PATH\E/?##);
+
+ my $fd = IO::File->new_tmpfile or croak $!;
+ my $pool = SVN::Pool->new;
+ my ($r, $props) = $SVN->get_file($f, $rev, $fd, $pool);
+ $pool->clear;
+ $fd->flush == 0 or croak $!;
+ seek $fd, 0, 0 or croak $!;
+ if (my $es = $props->{'svn:eol-style'}) {
+ my $new_fd = IO::File->new_tmpfile or croak $!;
+ eol_cp_fd($fd, $new_fd, $es);
+ close $fd or croak $!;
+ $fd = $new_fd;
+ seek $fd, 0, 0 or croak $!;
+ $fd->flush == 0 or croak $!;
+ }
+ my $mode = '100644';
+ if (exists $props->{'svn:executable'}) {
+ $mode = '100755';
+ }
+ if (exists $props->{'svn:special'}) {
+ $mode = '120000';
+ local $/;
+ my $link = <$fd>;
+ $link =~ s/^link // or die "svn:special file with contents: <",
+ $link, "> is not understood\n";
+ seek $fd, 0, 0 or croak $!;
+ truncate $fd, 0 or croak $!;
+ print $fd $link or croak $!;
+ seek $fd, 0, 0 or croak $!;
+ $fd->flush == 0 or croak $!;
+ }
+ my $pid = open my $ho, '-|';
+ defined $pid or croak $!;
+ if (!$pid) {
+ open STDIN, '<&', $fd or croak $!;
+ exec qw/git-hash-object -w --stdin/ or croak $!;
+ }
+ chomp(my $hash = do { local $/; <$ho> });
+ close $ho or croak $?;
+ $hash =~ /^$sha1$/o or die "not a sha1: $hash\n";
+ print $gui $mode,' ',$hash,"\t",$p,"\0" or croak $!;
+ close $fd or croak $!;
+}
+
+sub libsvn_log_entry {
+ my ($rev, $author, $date, $msg, $parents) = @_;
+ my ($Y,$m,$d,$H,$M,$S) = ($date =~ /^(\d{4})\-(\d\d)\-(\d\d)T
+ (\d\d)\:(\d\d)\:(\d\d).\d+Z$/x)
+ or die "Unable to parse date: $date\n";
+ if (defined $_authors && ! defined $users{$author}) {
+ die "Author: $author not defined in $_authors file\n";
+ }
+ return { revision => $rev, date => "+0000 $Y-$m-$d $H:$M:$S",
+ author => $author, msg => $msg."\n", parents => $parents || [] }
+}
+
+sub process_rm {
+ my ($gui, $last_commit, $f) = @_;
+ $f =~ s#^\Q$SVN_PATH\E/?## or return;
+ # remove entire directories.
+ if (safe_qx('git-ls-tree',$last_commit,'--',$f) =~ /^040000 tree/) {
+ defined(my $pid = open my $ls, '-|') or croak $!;
+ if (!$pid) {
+ exec(qw/git-ls-tree -r --name-only -z/,
+ $last_commit,'--',$f) or croak $!;
+ }
+ local $/ = "\0";
+ while (<$ls>) {
+ print $gui '0 ',0 x 40,"\t",$_ or croak $!;
+ }
+ close $ls or croak $!;
+ } else {
+ print $gui '0 ',0 x 40,"\t",$f,"\0" or croak $!;
+ }
+}
+
+sub libsvn_fetch {
+ my ($last_commit, $paths, $rev, $author, $date, $msg) = @_;
+ open my $gui, '| git-update-index -z --index-info' or croak $!;
+ my @amr;
+ foreach my $f (keys %$paths) {
+ my $m = $paths->{$f}->action();
+ $f =~ s#^/+##;
+ if ($m =~ /^[DR]$/) {
+ process_rm($gui, $last_commit, $f);
+ next if $m eq 'D';
+ # 'R' can be file replacements, too, right?
+ }
+ my $pool = SVN::Pool->new;
+ my $t = $SVN->check_path($f, $rev, $pool);
+ if ($t == $SVN::Node::file) {
+ if ($m =~ /^[AMR]$/) {
+ push @amr, $f;
+ } else {
+ die "Unrecognized action: $m, ($f r$rev)\n";
+ }
+ }
+ $pool->clear;
+ }
+ libsvn_get_file($gui, $_, $rev) foreach (@amr);
+ close $gui or croak $!;
+ return libsvn_log_entry($rev, $author, $date, $msg, [$last_commit]);
+}
+
+sub svn_grab_base_rev {
+ defined(my $pid = open my $fh, '-|') or croak $!;
+ if (!$pid) {
+ open my $null, '>', '/dev/null' or croak $!;
+ open STDERR, '>&', $null or croak $!;
+ exec qw/git-rev-parse --verify/,"refs/remotes/$GIT_SVN^0"
+ or croak $!;
+ }
+ chomp(my $c = do { local $/; <$fh> });
+ close $fh;
+ if (defined $c && length $c) {
+ my ($url, $rev, $uuid) = extract_metadata((grep(/^git-svn-id: /,
+ safe_qx(qw/git-cat-file commit/, $c)))[0]);
+ return ($rev, $c);
+ }
+ return (undef, undef);
+}
+
+sub libsvn_parse_revision {
+ my $base = shift;
+ my $head = $SVN->get_latest_revnum();
+ if (!defined $_revision || $_revision eq 'BASE:HEAD') {
+ return ($base + 1, $head) if (defined $base);
+ return (0, $head);
+ }
+ return ($1, $2) if ($_revision =~ /^(\d+):(\d+)$/);
+ return ($_revision, $_revision) if ($_revision =~ /^\d+$/);
+ if ($_revision =~ /^BASE:(\d+)$/) {
+ return ($base + 1, $1) if (defined $base);
+ return (0, $head);
+ }
+ return ($1, $head) if ($_revision =~ /^(\d+):HEAD$/);
+ die "revision argument: $_revision not understood by git-svn\n",
+ "Try using the command-line svn client instead\n";
+}
+
+sub libsvn_traverse {
+ my ($gui, $pfx, $path, $rev) = @_;
+ my $cwd = "$pfx/$path";
+ my $pool = SVN::Pool->new;
+ $cwd =~ s#^/+##g;
+ my ($dirent, $r, $props) = $SVN->get_dir($cwd, $rev, $pool);
+ foreach my $d (keys %$dirent) {
+ my $t = $dirent->{$d}->kind;
+ if ($t == $SVN::Node::dir) {
+ libsvn_traverse($gui, $cwd, $d, $rev);
+ } elsif ($t == $SVN::Node::file) {
+ libsvn_get_file($gui, "$cwd/$d", $rev);
+ }
+ }
+ $pool->clear;
+}
+
+sub libsvn_traverse_ignore {
+ my ($fh, $path, $r) = @_;
+ $path =~ s#^/+##g;
+ my $pool = SVN::Pool->new;
+ my ($dirent, undef, $props) = $SVN->get_dir($path, $r, $pool);
+ my $p = $path;
+ $p =~ s#^\Q$SVN_PATH\E/?##;
+ print $fh length $p ? "\n# $p\n" : "\n# /\n";
+ if (my $s = $props->{'svn:ignore'}) {
+ $s =~ s/[\r\n]+/\n/g;
+ chomp $s;
+ if (length $p == 0) {
+ $s =~ s#\n#\n/$p#g;
+ print $fh "/$s\n";
+ } else {
+ $s =~ s#\n#\n/$p/#g;
+ print $fh "/$p/$s\n";
+ }
+ }
+ foreach (sort keys %$dirent) {
+ next if $dirent->{$_}->kind != $SVN::Node::dir;
+ libsvn_traverse_ignore($fh, "$path/$_", $r);
+ }
+ $pool->clear;
+}
+
+sub libsvn_new_tree {
+ my ($paths, $rev, $author, $date, $msg) = @_;
+ my $svn_path = '/'.$SVN_PATH;
+
+ # look for a parent from another branch:
+ foreach (keys %$paths) {
+ next if ($_ ne $svn_path);
+ my $i = $paths->{$_};
+ my $branch_from = $i->copyfrom_path or next;
+ my $r = $i->copyfrom_rev;
+ print STDERR "Found possible branch point: ",
+ "$branch_from => $svn_path, $r\n";
+ $branch_from =~ s#^/##;
+ my $l_map = read_url_paths();
+ my $url = $SVN->{url};
+ defined $l_map->{$url} or next;
+ my $id = $l_map->{$url}->{$branch_from} or next;
+ my $f = "$GIT_DIR/svn/$id/revs/$r";
+ while ($r && !-r $f) {
+ $r--;
+ $f = "$GIT_DIR/svn/$id/revs/$r";
+ }
+ if (-r $f) {
+ my $parent = file_to_s($f);
+ unlink $GIT_SVN_INDEX;
+ print STDERR "Found branch parent: $parent\n";
+ sys(qw/git-read-tree/, $parent);
+ return libsvn_fetch($parent, $paths, $rev,
+ $author, $date, $msg);
+ }
+ print STDERR "Nope, branch point not imported or unknown\n";
+ }
+ open my $gui, '| git-update-index -z --index-info' or croak $!;
+ my $pool = SVN::Pool->new;
+ libsvn_traverse($gui, '', $SVN_PATH, $rev, $pool);
+ $pool->clear;
+ close $gui or croak $!;
+ return libsvn_log_entry($rev, $author, $date, $msg);
+}
+
+sub find_graft_path_commit {
+ my ($tree_paths, $p1, $r1) = @_;
+ foreach my $x (keys %$tree_paths) {
+ next unless ($p1 =~ /^\Q$x\E/);
+ my $i = $tree_paths->{$x};
+ my $f = "$GIT_DIR/svn/$i/revs/$r1";
+
+ return file_to_s($f) if (-r $f);
+
+ print STDERR "r$r1 of $i not imported\n";
+ next;
+ }
+ return undef;
+}
+
+sub find_graft_path_parents {
+ my ($grafts, $tree_paths, $c, $p0, $r0) = @_;
+ foreach my $x (keys %$tree_paths) {
+ next unless ($p0 =~ /^\Q$x\E/);
+ my $i = $tree_paths->{$x};
+ my $f = "$GIT_DIR/svn/$i/revs/$r0";
+ while ($r0 && !-r $f) {
+ # could be an older revision, too...
+ $r0--;
+ $f = "$GIT_DIR/svn/$i/revs/$r0";
+ }
+ unless (-r $f) {
+ print STDERR "r$r0 of $i not imported\n";
+ next;
+ }
+ my $parent = file_to_s($f);
+ $grafts->{$c}->{$parent} = 1;
+ }
+}
+
+sub libsvn_graft_file_copies {
+ my ($grafts, $tree_paths, $path, $paths, $rev) = @_;
+ foreach (keys %$paths) {
+ my $i = $paths->{$_};
+ my ($m, $p0, $r0) = ($i->action, $i->copyfrom_path,
+ $i->copyfrom_rev);
+ next unless (defined $p0 && defined $r0);
+
+ my $p1 = $_;
+ $p1 =~ s#^/##;
+ $p0 =~ s#^/##;
+ my $c = find_graft_path_commit($tree_paths, $p1, $rev);
+ next unless $c;
+ find_graft_path_parents($grafts, $tree_paths, $c, $p0, $r0);
+ }
+}
+
+sub set_index {
+ my $old = $ENV{GIT_INDEX_FILE};
+ $ENV{GIT_INDEX_FILE} = shift;
+ return $old;
+}
+
+sub restore_index {
+ my ($old) = @_;
+ if (defined $old) {
+ $ENV{GIT_INDEX_FILE} = $old;
+ } else {
+ delete $ENV{GIT_INDEX_FILE};
+ }
+}
+
+sub libsvn_commit_cb {
+ my ($rev, $date, $committer, $c, $msg, $r_last, $cmt_last) = @_;
+ if ($rev == ($r_last + 1)) {
+ # optimized (avoid fetch)
+ my $log = libsvn_log_entry($rev,$committer,$date,$msg);
+ $log->{tree} = get_tree_from_treeish($c);
+ my $cmt = git_commit($log, $cmt_last, $c);
+ my @diff = safe_qx('git-diff-tree', $cmt, $c);
+ if (@diff) {
+ print STDERR "Trees differ: $cmt $c\n",
+ join('',@diff),"\n";
+ exit 1;
+ }
+ } else {
+ fetch_lib("$rev=$c");
+ }
+}
+
+sub libsvn_ls_fullurl {
+ my $fullurl = shift;
+ my ($repo, $path) = repo_path_split($fullurl);
+ $SVN ||= libsvn_connect($repo);
+ my @ret;
+ my $pool = SVN::Pool->new;
+ my ($dirent, undef, undef) = $SVN->get_dir($path,
+ $SVN->get_latest_revnum, $pool);
+ foreach my $d (keys %$dirent) {
+ if ($dirent->{$d}->kind == $SVN::Node::dir) {
+ push @ret, "$d/"; # add '/' for compat with cli svn
+ }
+ }
+ $pool->clear;
+ return @ret;
+}
+
+
+sub libsvn_skip_unknown_revs {
+ my $err = shift;
+ my $errno = $err->apr_err();
+ # Maybe the branch we're tracking didn't
+ # exist when the repo started, so it's
+ # not an error if it doesn't, just continue
+ #
+ # Wonderfully consistent library, eh?
+ # 160013 - svn:// and file://
+ # 175002 - http(s)://
+ # More codes may be discovered later...
+ if ($errno == 175002 || $errno == 160013) {
+ print STDERR "directory non-existent\n";
+ return;
+ }
+ croak "Error from SVN, ($errno): ", $err->expanded_message,"\n";
+};
+
+package SVN::Git::Editor;
+use vars qw/@ISA/;
+use strict;
+use warnings;
+use Carp qw/croak/;
+use IO::File;
+
+sub new {
+ my $class = shift;
+ my $git_svn = shift;
+ my $self = SVN::Delta::Editor->new(@_);
+ bless $self, $class;
+ foreach (qw/svn_path c r ra /) {
+ die "$_ required!\n" unless (defined $git_svn->{$_});
+ $self->{$_} = $git_svn->{$_};
+ }
+ $self->{pool} = SVN::Pool->new;
+ $self->{bat} = { '' => $self->open_root($self->{r}, $self->{pool}) };
+ $self->{rm} = { };
+ require Digest::MD5;
+ return $self;
+}
+
+sub split_path {
+ return ($_[0] =~ m#^(.*?)/?([^/]+)$#);
+}
+
+sub repo_path {
+ (defined $_[1] && length $_[1]) ? "$_[0]->{svn_path}/$_[1]"
+ : $_[0]->{svn_path}
+}
+
+sub url_path {
+ my ($self, $path) = @_;
+ $self->{ra}->{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;
+
+ defined(my $pid = open my $fh,'-|') or croak $!;
+ if (!$pid) {
+ exec qw/git-ls-tree --name-only -r -z/, $self->{c} or croak $!;
+ }
+ local $/ = "\0";
+ while (<$fh>) {
+ chomp;
+ $_ = $self->{svn_path} . '/' . $_;
+ my ($dn) = ($_ =~ m#^(.*?)/?(?:[^/]+)$#);
+ delete $rm->{$dn};
+ last unless %$rm;
+ }
+ my ($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) = ($d =~ m#^(.*?)/?(?:[^/]+)$#);
+ $self->SUPER::delete_entry($d, $r, $bat->{$dn}, $p);
+ delete $bat->{$d};
+ }
+}
+
+sub open_or_add_dir {
+ my ($self, $full_path, $baton) = @_;
+ my $p = SVN::Pool->new;
+ my $t = $self->{ra}->check_path($full_path, $self->{r}, $p);
+ $p->clear;
+ if ($t == $SVN::Node::none) {
+ 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}, $self->{pool});
+ }
+ print STDERR "$full_path already exists in repository at ",
+ "r$self->{r} and it is not a directory (",
+ ($t == $SVN::Node::file ? 'file' : 'unknown'),"/$t)\n";
+ exit 1;
+}
+
+sub ensure_path {
+ my ($self, $path) = @_;
+ my $bat = $self->{bat};
+ $path = $self->repo_path($path);
+ return $bat->{''} unless (length $path);
+ my @p = split m#/+#, $path;
+ my $c = shift @p;
+ $bat->{$c} ||= $self->open_or_add_dir($c, $bat->{''});
+ while (@p) {
+ my $c0 = $c;
+ $c .= '/' . shift @p;
+ $bat->{$c} ||= $self->open_or_add_dir($c, $bat->{$c0});
+ }
+ return $bat->{$c};
+}
+
+sub A {
+ my ($self, $m) = @_;
+ my ($dir, $file) = split_path($m->{file_b});
+ my $pbat = $self->ensure_path($dir);
+ my $fbat = $self->add_file($self->repo_path($m->{file_b}), $pbat,
+ undef, -1);
+ $self->chg_file($fbat, $m);
+ $self->close_file($fbat,undef,$self->{pool});
+}
+
+sub C {
+ my ($self, $m) = @_;
+ my ($dir, $file) = split_path($m->{file_b});
+ my $pbat = $self->ensure_path($dir);
+ my $fbat = $self->add_file($self->repo_path($m->{file_b}), $pbat,
+ $self->url_path($m->{file_a}), $self->{r});
+ $self->chg_file($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, $m) = @_;
+ my ($dir, $file) = split_path($m->{file_b});
+ my $pbat = $self->ensure_path($dir);
+ my $fbat = $self->add_file($self->repo_path($m->{file_b}), $pbat,
+ $self->url_path($m->{file_a}), $self->{r});
+ $self->chg_file($fbat, $m);
+ $self->close_file($fbat,undef,$self->{pool});
+
+ ($dir, $file) = split_path($m->{file_a});
+ $pbat = $self->ensure_path($dir);
+ $self->delete_entry($m->{file_a}, $pbat);
+}
+
+sub M {
+ my ($self, $m) = @_;
+ my ($dir, $file) = split_path($m->{file_b});
+ my $pbat = $self->ensure_path($dir);
+ my $fbat = $self->open_file($self->repo_path($m->{file_b}),
+ $pbat,$self->{r},$self->{pool});
+ $self->chg_file($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, $self->{pool});
+}
+
+sub chg_file {
+ my ($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 = IO::File->new_tmpfile or croak $!;
+ if ($m->{mode_b} =~ /^120/) {
+ print $fh 'link ' or croak $!;
+ $self->change_file_prop($fbat,'svn:special','*');
+ } elsif ($m->{mode_a} =~ /^120/ && $m->{mode_b} !~ /^120/) {
+ $self->change_file_prop($fbat,'svn:special',undef);
+ }
+ defined(my $pid = fork) or croak $!;
+ if (!$pid) {
+ open STDOUT, '>&', $fh or croak $!;
+ exec qw/git-cat-file blob/, $m->{sha1_b} or croak $!;
+ }
+ waitpid $pid, 0;
+ croak $? if $?;
+ $fh->flush == 0 or croak $!;
+ seek $fh, 0, 0 or croak $!;
+
+ my $md5 = Digest::MD5->new;
+ $md5->addfile($fh) or croak $!;
+ seek $fh, 0, 0 or croak $!;
+
+ my $exp = $md5->hexdigest;
+ my $atd = $self->apply_textdelta($fbat, undef, $self->{pool});
+ my $got = SVN::TxDelta::send_stream($fh, @$atd, $self->{pool});
+ die "Checksum mismatch\nexpected: $exp\ngot: $got\n" if ($got ne $exp);
+
+ close $fh or croak $!;
+}
+
+sub D {
+ my ($self, $m) = @_;
+ my ($dir, $file) = split_path($m->{file_b});
+ my $pbat = $self->ensure_path($dir);
+ $self->delete_entry($m->{file_b}, $pbat);
+}
+
+sub close_edit {
+ my ($self) = @_;
+ my ($p,$bat) = ($self->{pool}, $self->{bat});
+ foreach (sort { $b =~ tr#/#/# <=> $a =~ tr#/#/# } keys %$bat) {
+ $self->close_directory($bat->{$_}, $p);
+ }
+ $self->SUPER::close_edit($p);
+ $p->clear;
+}
+
+sub abort_edit {
+ my ($self) = @_;
+ $self->SUPER::abort_edit($self->{pool});
+ $self->{pool}->clear;
+}
+