$AUTHOR = 'Eric Wong <normalperson@yhbt.net>';
$VERSION = '@@GIT_VERSION@@';
+# From which subdir have we been invoked?
+my $cmd_dir_prefix = eval {
+ command_oneline([qw/rev-parse --show-prefix/], STDERR => 0)
+} || '';
+
my $git_dir_user_set = 1 if defined $ENV{GIT_DIR};
$ENV{GIT_DIR} ||= '.git';
$Git::SVN::default_repo_id = 'svn';
$ENV{TZ} = 'UTC';
$| = 1; # unbuffer STDOUT
-sub fatal (@) { print STDERR @_; exit 1 }
+sub fatal (@) { print STDERR "@_\n"; exit 1 }
require SVN::Core; # use()-ing this causes segfaults for me... *shrug*
require SVN::Ra;
require SVN::Delta;
if ($SVN::Core::VERSION lt '1.1.0') {
- fatal "Need SVN::Core 1.1.0 or better (got $SVN::Core::VERSION)\n";
+ fatal "Need SVN::Core 1.1.0 or better (got $SVN::Core::VERSION)";
}
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//;
use File::Basename qw/dirname basename/;
use File::Path qw/mkpath/;
$_template, $_shared,
$_version, $_fetch_all, $_no_rebase,
$_merge, $_strategy, $_dry_run, $_local,
- $_prefix, $_no_checkout, $_verbose);
+ $_prefix, $_no_checkout, $_url, $_verbose);
$Git::SVN::_follow_parent = 1;
my %remote_opts = ( 'username=s' => \$Git::SVN::Prompt::_username,
'config-dir=s' => \$Git::SVN::Ra::config_dir,
'quiet|q' => \$_q,
'repack-flags|repack-args|repack-opts=s' =>
\$Git::SVN::_repack_flags,
+ 'use-log-author' => \$Git::SVN::_use_log_author,
%remote_opts );
my ($_trunk, $_tags, $_branches, $_stdlayout);
'set-tree' => [ \&cmd_set_tree,
"Set an SVN repository to a git tree-ish",
{ 'stdin|' => \$_stdin, %cmt_opts, %fc_opts, } ],
+ 'create-ignore' => [ \&cmd_create_ignore,
+ 'Create a .gitignore per svn:ignore',
+ { 'revision|r=i' => \$_revision
+ } ],
+ 'propget' => [ \&cmd_propget,
+ 'Print the value of a property on a file or directory',
+ { 'revision|r=i' => \$_revision } ],
+ 'proplist' => [ \&cmd_proplist,
+ 'List all properties of a file or directory',
+ { 'revision|r=i' => \$_revision } ],
'show-ignore' => [ \&cmd_show_ignore, "Show svn:ignore listings",
{ 'revision|r=i' => \$_revision
} ],
+ 'show-externals' => [ \&cmd_show_externals, "Show svn:externals listings",
+ { 'revision|r=i' => \$_revision
+ } ],
'multi-fetch' => [ \&cmd_multi_fetch,
"Deprecated alias for $0 fetch --all",
{ 'revision|r=s' => \$_revision, %fc_opts } ],
'file|F=s' => \$_file,
'revision|r=s' => \$_revision,
%cmt_opts } ],
+ 'info' => [ \&cmd_info,
+ "Show info about the latest SVN revision
+ on the current branch",
+ { 'url' => \$_url, } ],
);
my $cmd;
}
};
-my %opts = %{$cmd{$cmd}->[2]} if (defined $cmd);
-
-read_repo_config(\%opts);
-Getopt::Long::Configure('pass_through') if ($cmd && $cmd eq 'log');
-my $rv = GetOptions(%opts, 'help|H|h' => \$_help, 'version|V' => \$_version,
- 'minimize-connections' => \$Git::SVN::Migration::_minimize,
- 'id|i=s' => \$Git::SVN::default_ref_id,
- 'svn-remote|remote|R=s' => sub {
- $Git::SVN::no_reuse_existing = 1;
- $Git::SVN::default_repo_id = $_[1] });
-exit 1 if (!$rv && $cmd && $cmd ne 'log');
-
-usage(0) if $_help;
-version() if $_version;
-usage(1) unless defined $cmd;
-load_authors() if $_authors;
-
-# make sure we're always running
-unless ($cmd =~ /(?:clone|init|multi-init)$/) {
+# make sure we're always running at the top-level working directory
+unless ($cmd && $cmd =~ /(?:clone|init|multi-init)$/) {
unless (-d $ENV{GIT_DIR}) {
if ($git_dir_user_set) {
die "GIT_DIR=$ENV{GIT_DIR} explicitly set, ",
$ENV{GIT_DIR} = $git_dir;
}
}
+
+my %opts = %{$cmd{$cmd}->[2]} if (defined $cmd);
+
+read_repo_config(\%opts);
+Getopt::Long::Configure('pass_through') if ($cmd && $cmd eq 'log');
+my $rv = GetOptions(%opts, 'help|H|h' => \$_help, 'version|V' => \$_version,
+ 'minimize-connections' => \$Git::SVN::Migration::_minimize,
+ 'id|i=s' => \$Git::SVN::default_ref_id,
+ 'svn-remote|remote|R=s' => sub {
+ $Git::SVN::no_reuse_existing = 1;
+ $Git::SVN::default_repo_id = $_[1] });
+exit 1 if (!$rv && $cmd && $cmd ne 'log');
+
+usage(0) if $_help;
+version() if $_version;
+usage(1) unless defined $cmd;
+load_authors() if $_authors;
+
unless ($cmd =~ /^(?:clone|init|multi-init|commit-diff)$/) {
Git::SVN::Migration::migration_check();
}
next if $cmd && $cmd ne $_;
next if /^multi-/; # don't show deprecated commands
print $fd ' ',pack('A17',$_),$cmd{$_}->[1],"\n";
- foreach (keys %{$cmd{$_}->[2]}) {
+ foreach (sort keys %{$cmd{$_}->[2]}) {
# mixed-case options are for .git/config only
next if /[A-Z]/ && /^[a-z]+$/i;
# prints out arguments as they should be passed:
} elsif (scalar @tmp > 1) {
push @revs, reverse(command('rev-list',@tmp));
} else {
- fatal "Failed to rev-parse $c\n";
+ fatal "Failed to rev-parse $c";
}
}
my $gs = Git::SVN->new;
fatal "There are new revisions that were fetched ",
"and need to be merged (or acknowledged) ",
"before committing.\nlast rev: $r_last\n",
- " current: $gs->{last_rev}\n";
+ " current: $gs->{last_rev}";
}
$gs->set_tree($_) foreach @revs;
print "Done committing ",scalar @revs," revisions to SVN\n";
+ unlink $gs->{index};
}
sub cmd_dcommit {
my $head = shift;
+ git_cmd_try { command_oneline(qw/diff-index --quiet HEAD/) }
+ 'Cannot dcommit with a dirty index. Commit your changes first, '
+ . "or stash them with `git stash'.\n";
$head ||= 'HEAD';
my @refs;
my ($url, $rev, $uuid, $gs) = working_head_info($head, \@refs);
warn "Attempting to commit more than one change while ",
"--no-rebase is enabled.\n",
"If these changes depend on each other, re-running ",
- "without --no-rebase will be required."
+ "without --no-rebase may be required."
}
- foreach my $d (@$linear_refs) {
+ while (1) {
+ my $d = shift @$linear_refs or last;
unless (defined $last_rev) {
(undef, $last_rev, undef) = cmt_metadata("$d~1");
unless (defined $last_rev) {
fatal "Unable to extract revision information ",
- "from commit $d~1\n";
+ "from commit $d~1";
}
}
if ($_dry_run) {
my %ed_opts = ( r => $last_rev,
log => get_commit_entry($d)->{log},
ra => Git::SVN::Ra->new($gs->full_url),
+ config => SVN::Core::config_get_config(
+ $Git::SVN::Ra::config_dir
+ ),
tree_a => "$d~1",
tree_b => $d,
editor_cb => sub {
$parents->{$d};
}
$_fetch_all ? $gs->fetch_all : $gs->fetch;
+ $last_rev = $cmt_rev;
next if $_no_rebase;
# we always want to rebase against the current HEAD,
# not any head that was passed to us
- my @diff = command('diff-tree', 'HEAD',
+ my @diff = command('diff-tree', $d,
$gs->refname, '--');
my @finish;
if (@diff) {
@finish = rebase_cmd();
- print STDERR "W: HEAD and ", $gs->refname,
+ print STDERR "W: $d and ", $gs->refname,
" differ, using @finish:\n",
- "@diff";
+ join("\n", @diff), "\n";
} else {
print "No changes between current HEAD and ",
$gs->refname,
@finish = qw/reset --mixed/;
}
command_noisy(@finish, $gs->refname);
- $last_rev = $cmt_rev;
+ if (@diff) {
+ @refs = ();
+ my ($url_, $rev_, $uuid_, $gs_) =
+ working_head_info($head, \@refs);
+ my ($linear_refs_, $parents_) =
+ linearize_history($gs_, \@refs);
+ if (scalar(@$linear_refs) !=
+ scalar(@$linear_refs_)) {
+ fatal "# of revisions changed ",
+ "\nbefore:\n",
+ join("\n", @$linear_refs),
+ "\n\nafter:\n",
+ join("\n", @$linear_refs_), "\n",
+ 'If you are attempting to commit ',
+ "merges, try running:\n\t",
+ 'git rebase --interactive',
+ '--preserve-merges ',
+ $gs->refname,
+ "\nBefore dcommitting";
+ }
+ if ($url_ ne $url) {
+ fatal "URL mismatch after rebase: ",
+ "$url_ != $url";
+ }
+ if ($uuid_ ne $uuid) {
+ fatal "uuid mismatch after rebase: ",
+ "$uuid_ != $uuid";
+ }
+ # remap parents
+ my (%p, @l, $i);
+ for ($i = 0; $i < scalar @$linear_refs; $i++) {
+ my $new = $linear_refs_->[$i] or next;
+ $p{$new} =
+ $parents->{$linear_refs->[$i]};
+ push @l, $new;
+ }
+ $parents = \%p;
+ $linear_refs = \@l;
+ }
}
}
+ unlink $gs->{index};
}
sub cmd_find_rev {
"$head history\n";
}
my $desired_revision = substr($revision_or_hash, 1);
- $result = $gs->rev_db_get($desired_revision);
+ $result = $gs->rev_map_get($desired_revision);
} else {
my (undef, $rev, undef) = cmt_metadata($revision_or_hash);
$result = $rev;
exit 1;
}
unless ($_local) {
+ # rebase will checkout for us, so no need to do it explicitly
+ $_no_checkout = 'true';
$_fetch_all ? $gs->fetch_all : $gs->fetch;
}
command_noisy(rebase_cmd(), $gs->refname);
my ($url, $rev, $uuid, $gs) = working_head_info('HEAD');
$gs ||= Git::SVN->new;
my $r = (defined $_revision ? $_revision : $gs->ra->get_latest_revnum);
- $gs->traverse_ignore(\*STDOUT, $gs->{path}, $r);
+ $gs->prop_walk($gs->{path}, $r, sub {
+ my ($gs, $path, $props) = @_;
+ print STDOUT "\n# $path\n";
+ my $s = $props->{'svn:ignore'} or return;
+ $s =~ s/[\r\n]+/\n/g;
+ chomp $s;
+ $s =~ s#^#$path#gm;
+ print STDOUT "$s\n";
+ });
+}
+
+sub cmd_show_externals {
+ my ($url, $rev, $uuid, $gs) = working_head_info('HEAD');
+ $gs ||= Git::SVN->new;
+ my $r = (defined $_revision ? $_revision : $gs->ra->get_latest_revnum);
+ $gs->prop_walk($gs->{path}, $r, sub {
+ my ($gs, $path, $props) = @_;
+ print STDOUT "\n# $path\n";
+ my $s = $props->{'svn:externals'} or return;
+ $s =~ s/[\r\n]+/\n/g;
+ chomp $s;
+ $s =~ s#^#$path#gm;
+ print STDOUT "$s\n";
+ });
+}
+
+sub cmd_create_ignore {
+ my ($url, $rev, $uuid, $gs) = working_head_info('HEAD');
+ $gs ||= Git::SVN->new;
+ my $r = (defined $_revision ? $_revision : $gs->ra->get_latest_revnum);
+ $gs->prop_walk($gs->{path}, $r, sub {
+ my ($gs, $path, $props) = @_;
+ # $path is of the form /path/to/dir/
+ my $ignore = '.' . $path . '.gitignore';
+ my $s = $props->{'svn:ignore'} or return;
+ open(GITIGNORE, '>', $ignore)
+ or fatal("Failed to open `$ignore' for writing: $!");
+ $s =~ s/[\r\n]+/\n/g;
+ chomp $s;
+ # Prefix all patterns so that the ignore doesn't apply
+ # to sub-directories.
+ $s =~ s#^#/#gm;
+ print GITIGNORE "$s\n";
+ close(GITIGNORE)
+ or fatal("Failed to close `$ignore': $!");
+ command_noisy('add', $ignore);
+ });
+}
+
+sub canonicalize_path {
+ my ($path) = @_;
+ my $dot_slash_added = 0;
+ if (substr($path, 0, 1) ne "/") {
+ $path = "./" . $path;
+ $dot_slash_added = 1;
+ }
+ # File::Spec->canonpath doesn't collapse x/../y into y (for a
+ # good reason), so let's do this manually.
+ $path =~ s#/+#/#g;
+ $path =~ s#/\.(?:/|$)#/#g;
+ $path =~ s#/[^/]+/\.\.##g;
+ $path =~ s#/$##g;
+ $path =~ s#^\./## if $dot_slash_added;
+ return $path;
+}
+
+# get_svnprops(PATH)
+# ------------------
+# Helper for cmd_propget and cmd_proplist below.
+sub get_svnprops {
+ my $path = shift;
+ my ($url, $rev, $uuid, $gs) = working_head_info('HEAD');
+ $gs ||= Git::SVN->new;
+
+ # prefix THE PATH by the sub-directory from which the user
+ # invoked us.
+ $path = $cmd_dir_prefix . $path;
+ fatal("No such file or directory: $path") unless -e $path;
+ my $is_dir = -d $path ? 1 : 0;
+ $path = $gs->{path} . '/' . $path;
+
+ # canonicalize the path (otherwise libsvn will abort or fail to
+ # find the file)
+ $path = canonicalize_path($path);
+
+ my $r = (defined $_revision ? $_revision : $gs->ra->get_latest_revnum);
+ my $props;
+ if ($is_dir) {
+ (undef, undef, $props) = $gs->ra->get_dir($path, $r);
+ }
+ else {
+ (undef, $props) = $gs->ra->get_file($path, $r, undef);
+ }
+ return $props;
+}
+
+# cmd_propget (PROP, PATH)
+# ------------------------
+# Print the SVN property PROP for PATH.
+sub cmd_propget {
+ my ($prop, $path) = @_;
+ $path = '.' if not defined $path;
+ usage(1) if not defined $prop;
+ my $props = get_svnprops($path);
+ if (not defined $props->{$prop}) {
+ fatal("`$path' does not have a `$prop' SVN property.");
+ }
+ print $props->{$prop} . "\n";
+}
+
+# cmd_proplist (PATH)
+# -------------------
+# Print the list of SVN properties for PATH.
+sub cmd_proplist {
+ my $path = shift;
+ $path = '.' if not defined $path;
+ my $props = get_svnprops($path);
+ print "Properties on '$path':\n";
+ foreach (sort keys %{$props}) {
+ print " $_\n";
+ }
}
sub cmd_multi_init {
sub cmd_commit_diff {
my ($ta, $tb, $url) = @_;
my $usage = "Usage: $0 commit-diff -r<revision> ".
- "<tree-ish> <tree-ish> [<URL>]\n";
+ "<tree-ish> <tree-ish> [<URL>]";
fatal($usage) if (!defined $ta || !defined $tb);
my $svn_path;
if (!defined $url) {
if (defined $_message && defined $_file) {
fatal("Both --message/-m and --file/-F specified ",
"for the commit message.\n",
- "I have no idea what you mean\n");
+ "I have no idea what you mean");
}
if (defined $_file) {
$_message = file_to_s($_file);
}
}
+sub cmd_info {
+ my $path = canonicalize_path(shift or ".");
+ unless (scalar(@_) == 0) {
+ die "Too many arguments specified\n";
+ }
+
+ my ($file_type, $diff_status) = find_file_type_and_diff_status($path);
+
+ if (!$file_type && !$diff_status) {
+ print STDERR "$path: (Not a versioned resource)\n\n";
+ return;
+ }
+
+ my ($url, $rev, $uuid, $gs) = working_head_info('HEAD');
+ unless ($gs) {
+ die "Unable to determine upstream SVN information from ",
+ "working tree history\n";
+ }
+ my $full_url = $url . ($path eq "." ? "" : "/$path");
+
+ if ($_url) {
+ print $full_url, "\n";
+ return;
+ }
+
+ my $result = "Path: $path\n";
+ $result .= "Name: " . basename($path) . "\n" if $file_type ne "dir";
+ $result .= "URL: " . $full_url . "\n";
+
+ eval {
+ my $repos_root = $gs->repos_root;
+ Git::SVN::remove_username($repos_root);
+ $result .= "Repository Root: $repos_root\n";
+ };
+ if ($@) {
+ $result .= "Repository Root: (offline)\n";
+ }
+ $result .= "Repository UUID: $uuid\n" unless $diff_status eq "A";
+ $result .= "Revision: " . ($diff_status eq "A" ? 0 : $rev) . "\n";
+
+ $result .= "Node Kind: " .
+ ($file_type eq "dir" ? "directory" : "file") . "\n";
+
+ my $schedule = $diff_status eq "A"
+ ? "add"
+ : ($diff_status eq "D" ? "delete" : "normal");
+ $result .= "Schedule: $schedule\n";
+
+ if ($diff_status eq "A") {
+ print $result, "\n";
+ return;
+ }
+
+ my ($lc_author, $lc_rev, $lc_date_utc);
+ my @args = Git::SVN::Log::git_svn_log_cmd($rev, $rev, "--", $path);
+ my $log = command_output_pipe(@args);
+ my $esc_color = qr/(?:\033\[(?:(?:\d+;)*\d*)?m)*/;
+ while (<$log>) {
+ if (/^${esc_color}author (.+) <[^>]+> (\d+) ([\-\+]?\d+)$/o) {
+ $lc_author = $1;
+ $lc_date_utc = Git::SVN::Log::parse_git_date($2, $3);
+ } elsif (/^${esc_color} (git-svn-id:.+)$/o) {
+ (undef, $lc_rev, undef) = ::extract_metadata($1);
+ }
+ }
+ close $log;
+
+ Git::SVN::Log::set_local_timezone();
+
+ $result .= "Last Changed Author: $lc_author\n";
+ $result .= "Last Changed Rev: $lc_rev\n";
+ $result .= "Last Changed Date: " .
+ Git::SVN::Log::format_svn_date($lc_date_utc) . "\n";
+
+ if ($file_type ne "dir") {
+ my $text_last_updated_date =
+ ($diff_status eq "D" ? $lc_date_utc : (stat $path)[9]);
+ $result .=
+ "Text Last Updated: " .
+ Git::SVN::Log::format_svn_date($text_last_updated_date) .
+ "\n";
+ my $checksum;
+ if ($diff_status eq "D") {
+ my ($fh, $ctx) =
+ command_output_pipe(qw(cat-file blob), "HEAD:$path");
+ if ($file_type eq "link") {
+ my $file_name = <$fh>;
+ $checksum = md5sum("link $file_name");
+ } else {
+ $checksum = md5sum($fh);
+ }
+ command_close_pipe($fh, $ctx);
+ } elsif ($file_type eq "link") {
+ my $file_name =
+ command(qw(cat-file blob), "HEAD:$path");
+ $checksum =
+ md5sum("link " . $file_name);
+ } else {
+ open FILE, "<", $path or die $!;
+ $checksum = md5sum(\*FILE);
+ close FILE or die $!;
+ }
+ $result .= "Checksum: " . $checksum . "\n";
+ }
+
+ print $result, "\n";
+}
+
########################### utility functions #########################
sub rebase_cmd {
if ($path !~ m#^[a-z\+]+://#) {
if (!defined $url || $url !~ m#^[a-z\+]+://#) {
fatal("E: '$path' is not a complete URL ",
- "and a separate URL is not specified\n");
+ "and a separate URL is not specified");
}
return ($url, $path);
}
$repo_path =~ s#^/+##;
unless ($ra) {
fatal("E: '$repo_path' is not a complete URL ",
- "and a separate URL is not specified\n");
+ "and a separate URL is not specified");
}
}
my $url = $ra->{url};
if (defined $url && defined $rev) {
next if $max{$url} and $max{$url} < $rev;
if (my $gs = Git::SVN->find_by_url($url)) {
- my $c = $gs->rev_db_get($rev);
+ my $c = $gs->rev_map_get($rev);
if ($c && $c eq $hash) {
close $fh; # break the pipe
return ($url, $rev, $uuid, $gs);
} else {
- $max{$url} ||= $gs->rev_db_max;
+ $max{$url} ||= $gs->rev_map_max;
}
}
}
(\@linear_refs, \%parents);
}
+sub find_file_type_and_diff_status {
+ my ($path) = @_;
+ return ('dir', '') if $path eq '.';
+
+ my $diff_output =
+ command_oneline(qw(diff --cached --name-status --), $path) || "";
+ my $diff_status = (split(' ', $diff_output))[0] || "";
+
+ my $ls_tree = command_oneline(qw(ls-tree HEAD), $path) || "";
+
+ return (undef, undef) if !$diff_status && !$ls_tree;
+
+ if ($diff_status eq "A") {
+ return ("link", $diff_status) if -l $path;
+ return ("dir", $diff_status) if -d $path;
+ return ("file", $diff_status);
+ }
+
+ my $mode = (split(' ', $ls_tree))[0] || "";
+
+ return ("link", $diff_status) if $mode eq "120000";
+ return ("dir", $diff_status) if $mode eq "040000";
+ return ("file", $diff_status);
+}
+
+sub md5sum {
+ my $arg = shift;
+ my $ref = ref $arg;
+ my $md5 = Digest::MD5->new();
+ if ($ref eq 'GLOB' || $ref eq 'IO::File') {
+ $md5->addfile($arg) or croak $!;
+ } elsif ($ref eq 'SCALAR') {
+ $md5->add($$arg) or croak $!;
+ } elsif (!$ref) {
+ $md5->add($arg) or croak $!;
+ } else {
+ ::fatal "Can't provide MD5 hash for unknown ref type: '", $ref, "'";
+ }
+ return $md5->hexdigest();
+}
+
package Git::SVN;
use strict;
use warnings;
+use Fcntl qw/:DEFAULT :seek/;
+use constant rev_map_fmt => 'NH40';
use vars qw/$default_repo_id $default_ref_id $_no_metadata $_follow_parent
$_repack $_repack_flags $_use_svm_props $_head
- $_use_svnsync_props $no_reuse_existing $_minimize_url/;
+ $_use_svnsync_props $no_reuse_existing $_minimize_url
+ $_use_log_author/;
use Carp qw/croak/;
use File::Path qw/mkpath/;
use File::Copy qw/copy/;
}
}
-my %LOCKFILES;
-END { unlink keys %LOCKFILES if %LOCKFILES }
+my (%LOCKFILES, %INDEX_FILES);
+END {
+ unlink keys %LOCKFILES if %LOCKFILES;
+ unlink keys %INDEX_FILES if %INDEX_FILES;
+}
sub resolve_local_globs {
my ($url, $fetch, $glob_spec) = @_;
if ($fetch) {
foreach my $p (sort keys %$fetch) {
my $gs = Git::SVN->new($fetch->{$p}, $repo_id, $p);
- my $lr = $gs->rev_db_max;
+ my $lr = $gs->rev_map_max;
if (defined $lr) {
$base = $lr if ($lr < $base);
}
}
sub init_vars {
- if (defined $_repack) {
- $_repack = 1000 if ($_repack <= 0);
- $_repack_nr = $_repack;
- $_repack_flags ||= '-d';
- }
+ $_repack = 1000 unless (defined $_repack && $_repack > 0);
+ $_repack_nr = $_repack;
+ $_repack_flags ||= '-d';
}
sub verify_remotes_sanity {
# see if we have it in our config, first:
eval {
my $section = "svn-remote.$self->{repo_id}";
- $svnsync = {
- url => tmp_config('--get', "$section.svnsync-url"),
- uuid => tmp_config('--get', "$section.svnsync-uuid"),
- }
+
+ my $url = tmp_config('--get', "$section.svnsync-url");
+ ($url) = ($url =~ m{^([a-z\+]+://\S+)$}) or
+ die "doesn't look right - svn:sync-from-url is '$url'\n";
+
+ my $uuid = tmp_config('--get', "$section.svnsync-uuid");
+ ($uuid) = ($uuid =~ m{^([0-9a-f\-]{30,})$}) or
+ die "doesn't look right - svn:sync-from-uuid is '$uuid'\n";
+
+ $svnsync = { url => $url, uuid => $uuid }
};
if ($svnsync && $svnsync->{url} && $svnsync->{uuid}) {
return $self->{svnsync} = $svnsync;
my $rp = $self->ra->rev_proplist(0);
my $url = $rp->{'svn:sync-from-url'} or die $err . "url\n";
- $url =~ m{^[a-z\+]+://} or
+ ($url) = ($url =~ m{^([a-z\+]+://\S+)$}) or
die "doesn't look right - svn:sync-from-url is '$url'\n";
my $uuid = $rp->{'svn:sync-from-uuid'} or die $err . "uuid\n";
- $uuid =~ m{^[0-9a-f\-]{30,}$} or
+ ($uuid) = ($uuid =~ m{^([0-9a-f\-]{30,})$}) or
die "doesn't look right - svn:sync-from-uuid is '$uuid'\n";
my $section = "svn-remote.$self->{repo_id}";
$self->{ra_uuid};
}
+sub _set_repos_root {
+ my ($self, $repos_root) = @_;
+ my $k = "svn-remote.$self->{repo_id}.reposRoot";
+ $repos_root ||= $self->ra->{repos_root};
+ tmp_config($k, $repos_root);
+ $repos_root;
+}
+
+sub repos_root {
+ my ($self) = @_;
+ my $k = "svn-remote.$self->{repo_id}.reposRoot";
+ eval { tmp_config('--get', $k) } || $self->_set_repos_root;
+}
+
sub ra {
my ($self) = shift;
my $ra = Git::SVN::Ra->new($self->{url});
+ $self->_set_repos_root($ra->{repos_root});
if ($self->use_svm_props && !$self->{svm}) {
if ($self->no_metadata) {
die "Can't have both 'noMetadata' and ",
$url;
}
-sub traverse_ignore {
- my ($self, $fh, $path, $r) = @_;
- $path =~ s#^/+##g;
- my $ra = $self->ra;
- my ($dirent, undef, $props) = $ra->get_dir($path, $r);
+# prop_walk(PATH, REV, SUB)
+# -------------------------
+# Recursively traverse PATH at revision REV and invoke SUB for each
+# directory that contains a SVN property. SUB will be invoked as
+# follows: &SUB(gs, path, props); where `gs' is this instance of
+# Git::SVN, `path' the path to the directory where the properties
+# `props' were found. The `path' will be relative to point of checkout,
+# that is, if url://repo/trunk is the current Git branch, and that
+# directory contains a sub-directory `d', SUB will be invoked with `/d/'
+# as `path' (note the trailing `/').
+sub prop_walk {
+ my ($self, $path, $rev, $sub) = @_;
+
+ $path =~ s#^/##;
+ my ($dirent, undef, $props) = $self->ra->get_dir($path, $rev);
+ $path =~ s#^/*#/#g;
my $p = $path;
- $p =~ s#^\Q$self->{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";
- }
- }
+ # Strip the irrelevant part of the path.
+ $p =~ s#^/+\Q$self->{path}\E(/|$)#/#;
+ # Ensure the path is terminated by a `/'.
+ $p =~ s#/*$#/#;
+
+ # The properties contain all the internal SVN stuff nobody
+ # (usually) cares about.
+ my $interesting_props = 0;
+ foreach (keys %{$props}) {
+ # If it doesn't start with `svn:', it must be a
+ # user-defined property.
+ ++$interesting_props and next if $_ !~ /^svn:/;
+ # FIXME: Fragile, if SVN adds new public properties,
+ # this needs to be updated.
+ ++$interesting_props if /^svn:(?:ignore|keywords|executable
+ |eol-style|mime-type
+ |externals|needs-lock)$/x;
+ }
+ &$sub($self, $p, $props) if $interesting_props;
+
foreach (sort keys %$dirent) {
next if $dirent->{$_}->{kind} != $SVN::Node::dir;
- $self->traverse_ignore($fh, "$path/$_", $r);
+ $self->prop_walk($path . '/' . $_, $rev, $sub);
}
}
return ($rev, $c);
}
}
- my $db_path = $self->db_path;
- unless (-e $db_path) {
+ my $map_path = $self->map_path;
+ unless (-e $map_path) {
($self->{last_rev}, $self->{last_commit}) = (undef, undef);
return (undef, undef);
}
- my $offset = -41; # from tail
- my $rl;
- open my $fh, '<', $db_path or croak "$db_path not readable: $!\n";
- sysseek($fh, $offset, 2); # don't care for errors
- sysread($fh, $rl, 41) == 41 or return (undef, undef);
- chomp $rl;
- while (('0' x40) eq $rl && sysseek($fh, 0, 1) != 0) {
- $offset -= 41;
- sysseek($fh, $offset, 2); # don't care for errors
- sysread($fh, $rl, 41) == 41 or return (undef, undef);
- chomp $rl;
- }
- if ($c && $c ne $rl) {
- die "$db_path and ", $self->refname,
- " inconsistent!:\n$c != $rl\n";
- }
- my $rev = sysseek($fh, 0, 1) or croak $!;
- $rev = ($rev - 41) / 41;
- close $fh or croak $!;
- ($self->{last_rev}, $self->{last_commit}) = ($rev, $c);
- return ($rev, $c);
+ my ($rev, $commit) = $self->rev_map_max(1);
+ ($self->{last_rev}, $self->{last_commit}) = ($rev, $commit);
+ return ($rev, $commit);
}
sub get_fetch_range {
my ($self, $min, $max) = @_;
$max ||= $self->ra->get_latest_revnum;
- $min ||= $self->rev_db_max;
+ $min ||= $self->rev_map_max;
(++$min, $max);
}
$x = command_oneline('write-tree');
if ($y ne $x) {
::fatal "trees ($treeish) $y != $x\n",
- "Something is seriously wrong...\n";
+ "Something is seriously wrong...";
}
});
}
$self->{url} . (length $self->{path} ? '/' . $self->{path} : '');
}
+
+sub set_commit_header_env {
+ my ($log_entry) = @_;
+ my %env;
+ foreach my $ned (qw/NAME EMAIL DATE/) {
+ foreach my $ac (qw/AUTHOR COMMITTER/) {
+ $env{"GIT_${ac}_${ned}"} = $ENV{"GIT_${ac}_${ned}"};
+ }
+ }
+
+ $ENV{GIT_AUTHOR_NAME} = $log_entry->{name};
+ $ENV{GIT_AUTHOR_EMAIL} = $log_entry->{email};
+ $ENV{GIT_AUTHOR_DATE} = $ENV{GIT_COMMITTER_DATE} = $log_entry->{date};
+
+ $ENV{GIT_COMMITTER_NAME} = (defined $log_entry->{commit_name})
+ ? $log_entry->{commit_name}
+ : $log_entry->{name};
+ $ENV{GIT_COMMITTER_EMAIL} = (defined $log_entry->{commit_email})
+ ? $log_entry->{commit_email}
+ : $log_entry->{email};
+ \%env;
+}
+
+sub restore_commit_header_env {
+ my ($env) = @_;
+ foreach my $ned (qw/NAME EMAIL DATE/) {
+ foreach my $ac (qw/AUTHOR COMMITTER/) {
+ my $k = "GIT_${ac}_${ned}";
+ if (defined $env->{$k}) {
+ $ENV{$k} = $env->{$k};
+ } else {
+ delete $ENV{$k};
+ }
+ }
+ }
+}
+
sub do_git_commit {
my ($self, $log_entry) = @_;
my $lr = $self->last_rev;
" was r$lr, but we are about to fetch: ",
"r$log_entry->{revision}!\n";
}
- if (my $c = $self->rev_db_get($log_entry->{revision})) {
+ if (my $c = $self->rev_map_get($log_entry->{revision})) {
croak "$log_entry->{revision} = $c already exists! ",
"Why are we refetching it?\n";
}
- $ENV{GIT_AUTHOR_NAME} = $ENV{GIT_COMMITTER_NAME} = $log_entry->{name};
- $ENV{GIT_AUTHOR_EMAIL} = $ENV{GIT_COMMITTER_EMAIL} =
- $log_entry->{email};
- $ENV{GIT_AUTHOR_DATE} = $ENV{GIT_COMMITTER_DATE} = $log_entry->{date};
-
+ my $old_env = set_commit_header_env($log_entry);
my $tree = $log_entry->{tree};
if (!defined $tree) {
$tree = $self->tmp_index_do(sub {
defined(my $pid = open3(my $msg_fh, my $out_fh, '>&STDERR', @exec))
or croak $!;
print $msg_fh $log_entry->{log} or croak $!;
+ restore_commit_header_env($old_env);
unless ($self->no_metadata) {
print $msg_fh "\ngit-svn-id: $log_entry->{metadata}\n"
or croak $!;
die "Failed to commit, invalid sha1: $commit\n";
}
- $self->rev_db_set($log_entry->{revision}, $commit, 1);
+ $self->rev_map_set($log_entry->{revision}, $commit, 1);
$self->{last_rev} = $log_entry->{revision};
$self->{last_commit} = $commit;
print "r$log_entry->{revision}";
if (defined $log_entry->{svm_revision}) {
print " (\@$log_entry->{svm_revision})";
- $self->rev_db_set($log_entry->{svm_revision}, $commit,
+ $self->rev_map_set($log_entry->{svm_revision}, $commit,
0, $self->svm_uuid);
}
print " = $commit ($self->{ref_id})\n";
- if (defined $_repack && (--$_repack_nr == 0)) {
+ if ($_repack && (--$_repack_nr == 0)) {
$_repack_nr = $_repack;
# repack doesn't use any arguments with spaces in them, does it?
print "Running git repack $_repack_flags ...\n";
$gs->ra->gs_do_switch($r0, $rev, $gs,
$self->full_url, $ed)
or die "SVN connection failed somewhere...\n";
+ } elsif ($self->ra->trees_match($new_url, $r0,
+ $self->full_url, $rev)) {
+ print STDERR "Trees match:\n",
+ " $new_url\@$r0\n",
+ " ${\$self->full_url}\@$rev\n",
+ "Following parent with no changes\n";
+ $self->tmp_index_do(sub {
+ command_noisy('read-tree', $parent);
+ });
+ $self->{last_commit} = $parent;
} else {
print STDERR "Following parent with do_update\n";
$ed = SVN::Git::Fetcher->new($self);
$log_entry{log} .= "\n";
my $author = $log_entry{author} = check_author($log_entry{author});
my ($name, $email) = defined $::users{$author} ? @{$::users{$author}}
- : ($author, undef);
+ : ($author, undef);
+
+ my ($commit_name, $commit_email) = ($name, $email);
+ if ($_use_log_author) {
+ my $name_field;
+ if ($log_entry{log} =~ /From:\s+(.*\S)\s*\n/i) {
+ $name_field = $1;
+ } elsif ($log_entry{log} =~ /Signed-off-by:\s+(.*\S)\s*\n/i) {
+ $name_field = $1;
+ }
+ if (!defined $name_field) {
+ #
+ } elsif ($name_field =~ /(.*?)\s+<(.*)>/) {
+ ($name, $email) = ($1, $2);
+ } elsif ($name_field =~ /(.*)@/) {
+ ($name, $email) = ($1, $name_field);
+ } else {
+ ($name, $email) = ($name_field, 'unknown');
+ }
+ }
if (defined $headrev && $self->use_svm_props) {
if ($self->rewrite_root) {
die "Can't have both 'useSvmProps' and 'rewriteRoot' ",
remove_username($full_url);
$log_entry{metadata} = "$full_url\@$r $uuid";
$log_entry{svm_revision} = $r;
- $email ||= "$author\@$uuid"
+ $email ||= "$author\@$uuid";
+ $commit_email ||= "$author\@$uuid";
} elsif ($self->use_svnsync_props) {
my $full_url = $self->svnsync->{url};
$full_url .= "/$self->{path}" if length $self->{path};
remove_username($full_url);
my $uuid = $self->svnsync->{uuid};
$log_entry{metadata} = "$full_url\@$rev $uuid";
- $email ||= "$author\@$uuid"
+ $email ||= "$author\@$uuid";
+ $commit_email ||= "$author\@$uuid";
} else {
my $url = $self->metadata_url;
remove_username($url);
$log_entry{metadata} = "$url\@$rev " .
$self->ra->get_uuid;
$email ||= "$author\@" . $self->ra->get_uuid;
+ $commit_email ||= "$author\@" . $self->ra->get_uuid;
}
$log_entry{name} = $name;
$log_entry{email} = $email;
+ $log_entry{commit_name} = $commit_name;
+ $log_entry{commit_email} = $commit_email;
\%log_entry;
}
my ($self, $tree) = (shift, shift);
my $log_entry = ::get_commit_entry($tree);
unless ($self->{last_rev}) {
- fatal("Must have an existing revision to commit\n");
+ fatal("Must have an existing revision to commit");
}
my %ed_opts = ( r => $self->{last_rev},
log => $log_entry->{log},
}
}
+sub rebuild_from_rev_db {
+ my ($self, $path) = @_;
+ my $r = -1;
+ open my $fh, '<', $path or croak "open: $!";
+ while (<$fh>) {
+ length($_) == 41 or croak "inconsistent size in ($_) != 41";
+ chomp($_);
+ ++$r;
+ next if $_ eq ('0' x 40);
+ $self->rev_map_set($r, $_);
+ print "r$r = $_\n";
+ }
+ close $fh or croak "close: $!";
+ unlink $path or croak "unlink: $!";
+}
+
sub rebuild {
my ($self) = @_;
- my $db_path = $self->db_path;
- return if (-e $db_path && ! -z $db_path);
+ my $map_path = $self->map_path;
+ return if (-e $map_path && ! -z $map_path);
return unless ::verify_ref($self->refname.'^0');
- if (-f $self->{db_root}) {
- rename $self->{db_root}, $db_path or die
- "rename $self->{db_root} => $db_path failed: $!\n";
- my ($dir, $base) = ($db_path =~ m#^(.*?)/?([^/]+)$#);
- symlink $base, $self->{db_root} or die
- "symlink $base => $self->{db_root} failed: $!\n";
+ if ($self->use_svm_props || $self->no_metadata) {
+ my $rev_db = $self->rev_db_path;
+ $self->rebuild_from_rev_db($rev_db);
+ if ($self->use_svm_props) {
+ my $svm_rev_db = $self->rev_db_path($self->svm_uuid);
+ $self->rebuild_from_rev_db($svm_rev_db);
+ }
+ $self->unlink_rev_db_symlink;
return;
}
- print "Rebuilding $db_path ...\n";
- my ($log, $ctx) = command_output_pipe("log", '--no-color', $self->refname);
- my $latest;
+ print "Rebuilding $map_path ...\n";
+ my ($log, $ctx) =
+ command_output_pipe(qw/rev-list --pretty=raw --no-color --reverse/,
+ $self->refname, '--');
my $full_url = $self->full_url;
remove_username($full_url);
- my $svn_uuid;
+ my $svn_uuid = $self->ra_uuid;
my $c;
while (<$log>) {
if ( m{^commit ($::sha1)$} ) {
# if we merged or otherwise started elsewhere, this is
# how we break out of it
- if ((defined $svn_uuid && ($uuid ne $svn_uuid)) ||
+ if (($uuid ne $svn_uuid) ||
($full_url && $url && ($url ne $full_url))) {
next;
}
- $latest ||= $rev;
- $svn_uuid ||= $uuid;
- $self->rev_db_set($rev, $c);
+ $self->rev_map_set($rev, $c);
print "r$rev = $c\n";
}
command_close_pipe($log, $ctx);
- print "Done rebuilding $db_path\n";
+ print "Done rebuilding $map_path\n";
+ my $rev_db_path = $self->rev_db_path;
+ if (-f $self->rev_db_path) {
+ unlink $self->rev_db_path or croak "unlink: $!";
+ }
+ $self->unlink_rev_db_symlink;
}
-# rev_db:
+# rev_map:
# Tie::File seems to be prone to offset errors if revisions get sparse,
# it's not that fast, either. Tie::File is also not in Perl 5.6. So
# one of my favorite modules is out :< Next up would be one of the DBM
-# modules, but I'm not sure which is most portable... So I'll just
-# go with something that's plain-text, but still capable of
-# being randomly accessed. So here's my ultra-simple fixed-width
-# database. All records are 40 characters + "\n", so it's easy to seek
-# to a revision: (41 * rev) is the byte offset.
-# A record of 40 0s denotes an empty revision.
-# And yes, it's still pretty fast (faster than Tie::File).
+# modules, but I'm not sure which is most portable...
+#
+# This is the replacement for the rev_db format, which was too big
+# and inefficient for large repositories with a lot of sparse history
+# (mainly tags)
+#
+# The format is this:
+# - 24 bytes for every record,
+# * 4 bytes for the integer representing an SVN revision number
+# * 20 bytes representing the sha1 of a git commit
+# - No empty padding records like the old format
+# (except the last record, which can be overwritten)
+# - new records are written append-only since SVN revision numbers
+# increase monotonically
+# - lookups on SVN revision number are done via a binary search
+# - Piping the file to xxd -c24 is a good way of dumping it for
+# viewing or editing (piped back through xxd -r), should the need
+# ever arise.
+# - The last record can be padding revision with an all-zero sha1
+# This is used to optimize fetch performance when using multiple
+# "fetch" directives in .git/config
+#
# These files are disposable unless noMetadata or useSvmProps is set
-sub _rev_db_set {
+sub _rev_map_set {
my ($fh, $rev, $commit) = @_;
- my $offset = $rev * 41;
- # assume that append is the common case:
- seek $fh, 0, 2 or croak $!;
- my $pos = tell $fh;
- if ($pos < $offset) {
- for (1 .. (($offset - $pos) / 41)) {
- print $fh (('0' x 40),"\n") or croak $!;
+
+ my $size = (stat($fh))[7];
+ ($size % 24) == 0 or croak "inconsistent size: $size";
+
+ my $wr_offset = 0;
+ if ($size > 0) {
+ sysseek($fh, -24, SEEK_END) or croak "seek: $!";
+ my $read = sysread($fh, my $buf, 24) or croak "read: $!";
+ $read == 24 or croak "read only $read bytes (!= 24)";
+ my ($last_rev, $last_commit) = unpack(rev_map_fmt, $buf);
+ if ($last_commit eq ('0' x40)) {
+ if ($size >= 48) {
+ sysseek($fh, -48, SEEK_END) or croak "seek: $!";
+ $read = sysread($fh, $buf, 24) or
+ croak "read: $!";
+ $read == 24 or
+ croak "read only $read bytes (!= 24)";
+ ($last_rev, $last_commit) =
+ unpack(rev_map_fmt, $buf);
+ if ($last_commit eq ('0' x40)) {
+ croak "inconsistent .rev_map\n";
+ }
+ }
+ if ($last_rev >= $rev) {
+ croak "last_rev is higher!: $last_rev >= $rev";
+ }
+ $wr_offset = -24;
}
}
- seek $fh, $offset, 0 or croak $!;
- print $fh $commit,"\n" or croak $!;
+ sysseek($fh, $wr_offset, SEEK_END) or croak "seek: $!";
+ syswrite($fh, pack(rev_map_fmt, $rev, $commit), 24) == 24 or
+ croak "write: $!";
}
sub mkfile {
}
}
-sub rev_db_set {
+sub rev_map_set {
my ($self, $rev, $commit, $update_ref, $uuid) = @_;
length $commit == 40 or die "arg3 must be a full SHA1 hexsum\n";
- my $db = $self->db_path($uuid);
+ my $db = $self->map_path($uuid);
my $db_lock = "$db.lock";
my $sig;
if ($update_ref) {
# and we can't afford to lose it because rebuild() won't work
if ($self->use_svm_props || $self->no_metadata) {
$sync = 1;
- copy($db, $db_lock) or die "rev_db_set(@_): ",
+ copy($db, $db_lock) or die "rev_map_set(@_): ",
"Failed to copy: ",
"$db => $db_lock ($!)\n";
} else {
- rename $db, $db_lock or die "rev_db_set(@_): ",
+ rename $db, $db_lock or die "rev_map_set(@_): ",
"Failed to rename: ",
"$db => $db_lock ($!)\n";
}
- open my $fh, '+<', $db_lock or die "Couldn't open $db_lock: $!\n";
- _rev_db_set($fh, $rev, $commit);
+
+ sysopen(my $fh, $db_lock, O_RDWR | O_CREAT)
+ or croak "Couldn't open $db_lock: $!\n";
+ _rev_map_set($fh, $rev, $commit);
if ($sync) {
$fh->flush or die "Couldn't flush $db_lock: $!\n";
$fh->sync or die "Couldn't sync $db_lock: $!\n";
command_noisy('update-ref', '-m', "r$rev",
$self->refname, $commit);
}
- rename $db_lock, $db or die "rev_db_set(@_): ", "Failed to rename: ",
+ rename $db_lock, $db or die "rev_map_set(@_): ", "Failed to rename: ",
"$db_lock => $db ($!)\n";
delete $LOCKFILES{$db_lock};
if ($update_ref) {
}
}
-sub rev_db_max {
- my ($self) = @_;
+# If want_commit, this will return an array of (rev, commit) where
+# commit _must_ be a valid commit in the archive.
+# Otherwise, it'll return the max revision (whether or not the
+# commit is valid or just a 0x40 placeholder).
+sub rev_map_max {
+ my ($self, $want_commit) = @_;
$self->rebuild;
- my $db_path = $self->db_path;
- my @stat = stat $db_path or return 0;
- ($stat[7] % 41) == 0 or die "$db_path inconsistent size: $stat[7]\n";
- my $max = $stat[7] / 41;
- (($max > 0) ? $max - 1 : 0);
+ my $map_path = $self->map_path;
+ stat $map_path or return $want_commit ? (0, undef) : 0;
+ sysopen(my $fh, $map_path, O_RDONLY) or croak "open: $!";
+ my $size = (stat($fh))[7];
+ ($size % 24) == 0 or croak "inconsistent size: $size";
+
+ if ($size == 0) {
+ close $fh or croak "close: $!";
+ return $want_commit ? (0, undef) : 0;
+ }
+
+ sysseek($fh, -24, SEEK_END) or croak "seek: $!";
+ sysread($fh, my $buf, 24) == 24 or croak "read: $!";
+ my ($r, $c) = unpack(rev_map_fmt, $buf);
+ if ($want_commit && $c eq ('0' x40)) {
+ if ($size < 48) {
+ return $want_commit ? (0, undef) : 0;
+ }
+ sysseek($fh, -48, SEEK_END) or croak "seek: $!";
+ sysread($fh, $buf, 24) == 24 or croak "read: $!";
+ ($r, $c) = unpack(rev_map_fmt, $buf);
+ if ($c eq ('0'x40)) {
+ croak "Penultimate record is all-zeroes in $map_path";
+ }
+ }
+ close $fh or croak "close: $!";
+ $want_commit ? ($r, $c) : $r;
}
-sub rev_db_get {
+sub rev_map_get {
my ($self, $rev, $uuid) = @_;
- my $ret;
- my $offset = $rev * 41;
- my $db_path = $self->db_path($uuid);
- return undef unless -e $db_path;
- open my $fh, '<', $db_path or croak $!;
- if (sysseek($fh, $offset, 0) == $offset) {
- my $read = sysread($fh, $ret, 40);
- $ret = undef if ($read != 40 || $ret eq ('0'x40));
+ my $map_path = $self->map_path($uuid);
+ return undef unless -e $map_path;
+
+ sysopen(my $fh, $map_path, O_RDONLY) or croak "open: $!";
+ my $size = (stat($fh))[7];
+ ($size % 24) == 0 or croak "inconsistent size: $size";
+
+ if ($size == 0) {
+ close $fh or croak "close: $fh";
+ return undef;
+ }
+
+ my ($l, $u) = (0, $size - 24);
+ my ($r, $c, $buf);
+
+ while ($l <= $u) {
+ my $i = int(($l/24 + $u/24) / 2) * 24;
+ sysseek($fh, $i, SEEK_SET) or croak "seek: $!";
+ sysread($fh, my $buf, 24) == 24 or croak "read: $!";
+ my ($r, $c) = unpack('NH40', $buf);
+
+ if ($r < $rev) {
+ $l = $i + 24;
+ } elsif ($r > $rev) {
+ $u = $i - 24;
+ } else { # $r == $rev
+ close($fh) or croak "close: $!";
+ return $c eq ('0' x 40) ? undef : $c;
+ }
}
- close $fh or croak $!;
- $ret;
+ close($fh) or croak "close: $!";
+ undef;
}
+# Finds the first svn revision that exists on (if $eq_ok is true) or
+# before $rev for the current branch. It will not search any lower
+# than $min_rev. Returns the git commit hash and svn revision number
+# if found, else (undef, undef).
sub find_rev_before {
- my ($self, $rev, $eq_ok) = @_;
+ my ($self, $rev, $eq_ok, $min_rev) = @_;
--$rev unless $eq_ok;
- while ($rev > 0) {
- if (my $c = $self->rev_db_get($rev)) {
+ $min_rev ||= 1;
+ while ($rev >= $min_rev) {
+ if (my $c = $self->rev_map_get($rev)) {
return ($rev, $c);
}
--$rev;
return (undef, undef);
}
+# Finds the first svn revision that exists on (if $eq_ok is true) or
+# after $rev for the current branch. It will not search any higher
+# than $max_rev. Returns the git commit hash and svn revision number
+# if found, else (undef, undef).
+sub find_rev_after {
+ my ($self, $rev, $eq_ok, $max_rev) = @_;
+ ++$rev unless $eq_ok;
+ $max_rev ||= $self->rev_map_max;
+ while ($rev <= $max_rev) {
+ if (my $c = $self->rev_map_get($rev)) {
+ return ($rev, $c);
+ }
+ ++$rev;
+ }
+ return (undef, undef);
+}
+
sub _new {
my ($class, $repo_id, $ref_id, $path) = @_;
unless (defined $repo_id && length $repo_id) {
bless {
ref_id => $ref_id, dir => $dir, index => "$dir/index",
path => $path, config => "$ENV{GIT_DIR}/svn/config",
- db_root => "$dir/.rev_db", repo_id => $repo_id }, $class;
+ map_root => "$dir/.rev_map", repo_id => $repo_id }, $class;
+}
+
+# for read-only access of old .rev_db formats
+sub unlink_rev_db_symlink {
+ my ($self) = @_;
+ my $link = $self->rev_db_path;
+ $link =~ s/\.[\w-]+$// or croak "missing UUID at the end of $link";
+ if (-l $link) {
+ unlink $link or croak "unlink: $link failed!";
+ }
+}
+
+sub rev_db_path {
+ my ($self, $uuid) = @_;
+ my $db_path = $self->map_path($uuid);
+ $db_path =~ s{/\.rev_map\.}{/\.rev_db\.}
+ or croak "map_path: $db_path does not contain '/.rev_map.' !";
+ $db_path;
}
-sub db_path {
+# the new replacement for .rev_db
+sub map_path {
my ($self, $uuid) = @_;
$uuid ||= $self->ra_uuid;
- "$self->{db_root}.$uuid";
+ "$self->{map_root}.$uuid";
}
sub uri_encode {
my ($cred, $realm, $failures, $cert_info, $may_save, $pool) = @_;
$may_save = undef if $_no_auth_cache;
print STDERR "Error validating server certificate for '$realm':\n";
- if ($failures & $SVN::Auth::SSL::UNKNOWNCA) {
- print STDERR " - The certificate is not issued by a trusted ",
- "authority. Use the\n",
- " fingerprint to validate the certificate manually!\n";
- }
- if ($failures & $SVN::Auth::SSL::CNMISMATCH) {
- print STDERR " - The certificate hostname does not match.\n";
- }
- if ($failures & $SVN::Auth::SSL::NOTYETVALID) {
- print STDERR " - The certificate is not yet valid.\n";
- }
- if ($failures & $SVN::Auth::SSL::EXPIRED) {
- print STDERR " - The certificate has expired.\n";
- }
- if ($failures & $SVN::Auth::SSL::OTHER) {
- print STDERR " - The certificate has an unknown error.\n";
- }
+ {
+ no warnings 'once';
+ # All variables SVN::Auth::SSL::* are used only once,
+ # so we're shutting up Perl warnings about this.
+ if ($failures & $SVN::Auth::SSL::UNKNOWNCA) {
+ print STDERR " - The certificate is not issued ",
+ "by a trusted authority. Use the\n",
+ " fingerprint to validate ",
+ "the certificate manually!\n";
+ }
+ if ($failures & $SVN::Auth::SSL::CNMISMATCH) {
+ print STDERR " - The certificate hostname ",
+ "does not match.\n";
+ }
+ if ($failures & $SVN::Auth::SSL::NOTYETVALID) {
+ print STDERR " - The certificate is not yet valid.\n";
+ }
+ if ($failures & $SVN::Auth::SSL::EXPIRED) {
+ print STDERR " - The certificate has expired.\n";
+ }
+ if ($failures & $SVN::Auth::SSL::OTHER) {
+ print STDERR " - The certificate has ",
+ "an unknown error.\n";
+ }
+ } # no warnings 'once'
printf STDERR
"Certificate information:\n".
" - Hostname: %s\n".
$password;
}
-package main;
-
-{
- 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.
- $SVN::Auth::SSL::CNMISMATCH.
- $SVN::Auth::SSL::NOTYETVALID.
- $SVN::Auth::SSL::EXPIRED.
- $SVN::Auth::SSL::UNKNOWNCA.
- $SVN::Auth::SSL::OTHER;
-}
-
package SVN::Git::Fetcher;
use vars qw/@ISA/;
use strict;
use warnings;
use Carp qw/croak/;
use IO::File qw//;
-use Digest::MD5;
# file baton members: path, mode_a, mode_b, pool, fh, blob, base
sub new {
sub add_directory {
my ($self, $path, $cp_path, $cp_rev) = @_;
+ 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 $::_q;
+ }
+ command_close_pipe($ls, $ctx);
+ $self->{empty}->{$path} = 0;
+ }
my ($dir, $file) = ($path =~ m#^(.*?)/?([^/]+)$#);
delete $self->{empty}->{$dir};
$self->{empty}->{$path} = 1;
if (defined $exp) {
seek $base, 0, 0 or croak $!;
- my $md5 = Digest::MD5->new;
- $md5->addfile($base);
- my $got = $md5->hexdigest;
+ my $got = ::md5sum($base);
die "Checksum mismatch: $fb->{path} $fb->{blob}\n",
"expected: $exp\n",
" got: $got\n" if ($got ne $exp);
if (my $fh = $fb->{fh}) {
if (defined $exp) {
seek($fh, 0, 0) or croak $!;
- my $md5 = Digest::MD5->new;
- $md5->addfile($fh);
- my $got = $md5->hexdigest;
+ my $got = ::md5sum($fh);
if ($got ne $exp) {
die "Checksum mismatch: $path\n",
"expected: $exp\n got: $got\n";
}
sysseek($fh, 0, 0) or croak $!;
if ($fb->{mode_b} == 120000) {
- sysread($fh, my $buf, 5) == 5 or croak $!;
- $buf eq 'link ' or die "$path has mode 120000",
- "but is not a link\n";
+ eval {
+ sysread($fh, my $buf, 5) == 5 or croak $!;
+ $buf eq 'link ' or die "$path has mode 120000",
+ " but is not a link";
+ };
+ if ($@) {
+ warn "$@\n";
+ sysseek($fh, 0, 0) or croak $!;
+ }
}
defined(my $pid = open my $out,'-|') or die "Can't fork: $!\n";
if (!$pid) {
use warnings;
use Carp qw/croak/;
use IO::File;
-use Digest::MD5;
sub new {
my ($class, $opts) = @_;
if (!defined $t) {
die "$full_path not known in r$self->{r} or we have a bug!\n";
}
- if ($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";
+ {
+ 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) {
+ 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;
}
$fh->flush == 0 or croak $!;
seek $fh, 0, 0 or croak $!;
- my $md5 = Digest::MD5->new;
- $md5->addfile($fh) or croak $!;
+ my $exp = ::md5sum($fh);
seek $fh, 0, 0 or croak $!;
- my $exp = $md5->hexdigest;
my $pool = SVN::Pool->new;
my $atd = $self->apply_textdelta($fbat, undef, $pool);
my $got = SVN::TxDelta::send_stream($fh, @$atd, $pool);
if (defined $o{$f}) {
$self->$f($m);
} else {
- fatal("Invalid change type: $f\n");
+ fatal("Invalid change type: $f");
}
}
$self->rmdirs if $_rmdir;
}
}
+sub _auth_providers () {
+ [
+ SVN::Client::get_simple_provider(),
+ SVN::Client::get_ssl_server_trust_file_provider(),
+ SVN::Client::get_simple_prompt_provider(
+ \&Git::SVN::Prompt::simple, 2),
+ SVN::Client::get_ssl_client_cert_file_provider(),
+ SVN::Client::get_ssl_client_cert_prompt_provider(
+ \&Git::SVN::Prompt::ssl_client_cert, 2),
+ SVN::Client::get_ssl_client_cert_pw_prompt_provider(
+ \&Git::SVN::Prompt::ssl_client_cert_pw, 2),
+ SVN::Client::get_username_provider(),
+ SVN::Client::get_ssl_server_trust_prompt_provider(
+ \&Git::SVN::Prompt::ssl_server_trust),
+ SVN::Client::get_username_prompt_provider(
+ \&Git::SVN::Prompt::username, 2)
+ ]
+}
+
+sub escape_uri_only {
+ my ($uri) = @_;
+ my @tmp;
+ foreach (split m{/}, $uri) {
+ s/([^\w.-])/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 $url);
SVN::_Core::svn_config_ensure($config_dir, undef);
- my ($baton, $callbacks) = SVN::Core::auth_open_helper([
- SVN::Client::get_simple_provider(),
- SVN::Client::get_ssl_server_trust_file_provider(),
- SVN::Client::get_simple_prompt_provider(
- \&Git::SVN::Prompt::simple, 2),
- SVN::Client::get_ssl_client_cert_file_provider(),
- SVN::Client::get_ssl_client_cert_prompt_provider(
- \&Git::SVN::Prompt::ssl_client_cert, 2),
- SVN::Client::get_ssl_client_cert_pw_prompt_provider(
- \&Git::SVN::Prompt::ssl_client_cert_pw, 2),
- SVN::Client::get_username_provider(),
- SVN::Client::get_ssl_server_trust_prompt_provider(
- \&Git::SVN::Prompt::ssl_server_trust),
- SVN::Client::get_username_prompt_provider(
- \&Git::SVN::Prompt::username, 2),
- ]);
+ my ($baton, $callbacks) = SVN::Core::auth_open_helper(_auth_providers);
my $config = SVN::Core::config_get_config($config_dir);
$RA = undef;
- my $self = SVN::Ra->new(url => $url, auth => $baton,
+ 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(/|$)##;
$ret;
}
+sub trees_match {
+ my ($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 = $SVN::Core::VERSION ge '1.2.0' ? (undef, 0) : ();
my $full_url = $self->{url};
my $old_url = $full_url;
- $full_url .= "/$path" if length $path;
+ $full_url .= '/' . escape_uri_only($path) if length $path;
my ($ra, $reparented);
if ($old_url ne $full_url) {
if ($old_url !~ m#^svn(\+ssh)?://#) {
foreach my $gs ($self->match_globs(\%exists, $paths,
$globs, $r)) {
- if ($gs->rev_db_max >= $r) {
+ if ($gs->rev_map_max >= $r) {
next;
}
next unless $gs->match_paths($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}." .
# 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 defined $gs->rev_db_get($max);
- $gs->rev_db_set($max, 0 x40);
+ 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}.$g->{t}-maxRev";
warn "W: Ignoring error from SVN, path probably ",
"does not exist: ($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;
use strict;
use warnings;
use POSIX qw/strftime/;
+use constant commit_log_separator => ('-' x 72) . "\n";
use vars qw/$TZ $limit $color $pager $non_recursive $verbose $oneline
%rusers $show_commit $incremental/;
my $l_fmt;
}
sub log_use_color {
- return 1 if $color;
- my ($dc, $dcvar);
- $dcvar = 'color.diff';
- $dc = `git-config --get $dcvar`;
- if ($dc eq '') {
- # nothing at all; fallback to "diff.color"
- $dcvar = 'diff.color';
- $dc = `git-config --get $dcvar`;
- }
- chomp($dc);
- if ($dc eq 'auto') {
- my $pc;
- $pc = `git-config --get color.pager`;
- if ($pc eq '') {
- # does not have it -- fallback to pager.color
- $pc = `git-config --bool --get pager.color`;
- }
- else {
- $pc = `git-config --bool --get color.pager`;
- if ($?) {
- $pc = 'false';
- }
- }
- chomp($pc);
- if (-t *STDOUT || (defined $pager && $pc eq 'true')) {
- return ($ENV{TERM} && $ENV{TERM} ne 'dumb');
- }
- return 0;
- }
- return 0 if $dc eq 'never';
- return 1 if $dc eq 'always';
- chomp($dc = `git-config --bool --get $dcvar`);
- return ($dc eq 'true');
+ return $color || Git->repository->get_colorbool('color.diff');
}
sub git_svn_log_cmd {
push @cmd, @log_opts;
if (defined $r_max && $r_max == $r_min) {
push @cmd, '--max-count=1';
- if (my $c = $gs->rev_db_get($r_max)) {
+ if (my $c = $gs->rev_map_get($r_max)) {
push @cmd, $c;
}
} elsif (defined $r_max) {
- my ($c_min, $c_max);
- $c_max = $gs->rev_db_get($r_max);
- $c_min = $gs->rev_db_get($r_min);
- if (defined $c_min && defined $c_max) {
- if ($r_max > $r_max) {
- push @cmd, "$c_min..$c_max";
- } else {
- push @cmd, "$c_max..$c_min";
- }
- } elsif ($r_max > $r_min) {
- push @cmd, $c_max;
+ if ($r_max < $r_min) {
+ ($r_min, $r_max) = ($r_max, $r_min);
+ }
+ my (undef, $c_max) = $gs->find_rev_before($r_max, 1, $r_min);
+ my (undef, $c_min) = $gs->find_rev_after($r_min, 1, $r_max);
+ # If there are no commits in the range, both $c_max and $c_min
+ # will be undefined. If there is at least 1 commit in the
+ # range, both will be defined.
+ return () if !defined $c_min || !defined $c_max;
+ if ($c_min eq $c_max) {
+ push @cmd, '--max-count=1', $c_min;
} else {
- push @cmd, $c_min;
+ push @cmd, '--boundary', "$c_min..$c_max";
}
}
return (@cmd, @files);
} elsif (length $pager == 0 || $pager eq 'cat') {
$pager = undef;
}
+ $ENV{GIT_PAGER_IN_USE} = defined($pager);
}
sub run_pager {
- return unless -t *STDOUT;
+ return unless -t *STDOUT && defined $pager;
pipe my $rfd, my $wfd or return;
- defined(my $pid = fork) or ::fatal "Can't fork: $!\n";
+ defined(my $pid = fork) or ::fatal "Can't fork: $!";
if (!$pid) {
open STDOUT, '>&', $wfd or
- ::fatal "Can't redirect to stdout: $!\n";
+ ::fatal "Can't redirect to stdout: $!";
return;
}
- open STDIN, '<&', $rfd or ::fatal "Can't redirect stdin: $!\n";
+ open STDIN, '<&', $rfd or ::fatal "Can't redirect stdin: $!";
$ENV{LESS} ||= 'FRSX';
- exec $pager or ::fatal "Can't run pager: $! ($pager)\n";
+ exec $pager or ::fatal "Can't run pager: $! ($pager)";
+}
+
+sub format_svn_date {
+ return strftime("%Y-%m-%d %H:%M:%S %z (%a, %d %b %Y)", localtime(shift));
+}
+
+sub parse_git_date {
+ my ($t, $tz) = @_;
+ # Date::Parse isn't in the standard Perl distro :(
+ if ($tz =~ s/^\+//) {
+ $t += tz_to_s_offset($tz);
+ } elsif ($tz =~ s/^\-//) {
+ $t -= tz_to_s_offset($tz);
+ }
+ return $t;
+}
+
+sub set_local_timezone {
+ if (defined $TZ) {
+ $ENV{TZ} = $TZ;
+ } else {
+ delete $ENV{TZ};
+ }
}
sub tz_to_s_offset {
$dest->{t} = $t;
$dest->{tz} = $tz;
$dest->{a} = $au;
- # Date::Parse isn't in the standard Perl distro :(
- if ($tz =~ s/^\+//) {
- $t += tz_to_s_offset($tz);
- } elsif ($tz =~ s/^\-//) {
- $t -= tz_to_s_offset($tz);
- }
- $dest->{t_utc} = $t;
+ $dest->{t_utc} = parse_git_date($t, $tz);
}
sub process_commit {
sub show_commit_normal {
my ($c) = @_;
- print '-' x72, "\nr$c->{r} | ";
+ print commit_log_separator, "r$c->{r} | ";
print "$c->{c} | " if $show_commit;
- print "$c->{a} | ", strftime("%Y-%m-%d %H:%M:%S %z (%a, %d %b %Y)",
- localtime($c->{t_utc})), ' | ';
+ print "$c->{a} | ", format_svn_date($c->{t_utc}), ' | ';
my $nr_line = 0;
if (my $l = $c->{l}) {
my (@args) = @_;
my ($r_min, $r_max);
my $r_last = -1; # prevent dupes
- if (defined $TZ) {
- $ENV{TZ} = $TZ;
- } else {
- delete $ENV{TZ};
- }
+ set_local_timezone();
if (defined $::_revision) {
if ($::_revision =~ /^(\d+):(\d+)$/) {
($r_min, $r_max) = ($1, $2);
$r_min = $r_max = $::_revision;
} else {
::fatal "-r$::_revision is not supported, use ",
- "standard \'git log\' arguments instead\n";
+ "standard 'git log' arguments instead";
}
}
config_pager();
@args = git_svn_log_cmd($r_min, $r_max, @args);
+ if (!@args) {
+ print commit_log_separator unless $incremental || $oneline;
+ return;
+ }
my $log = command_output_pipe(@args);
run_pager();
my (@k, $c, $d, $stat);
my $esc_color = qr/(?:\033\[(?:(?:\d+;)*\d*)?m)*/;
while (<$log>) {
- if (/^${esc_color}commit ($::sha1_short)/o) {
+ if (/^${esc_color}commit -?($::sha1_short)/o) {
my $cmt = $1;
if ($c && cmt_showable($c) && $c->{r} != $r_last) {
$r_last = $c->{r};
process_commit($c, $r_min, $r_max, \@k);
}
if (@k) {
- my $swap = $r_max;
- $r_max = $r_min;
- $r_min = $swap;
+ ($r_min, $r_max) = ($r_max, $r_min);
process_commit($_, $r_min, $r_max) foreach reverse @k;
}
out:
close $log;
- print '-' x72,"\n" unless $incremental || $oneline;
+ print commit_log_separator unless $incremental || $oneline;
}
package Git::SVN::Migration;
# --use-separate-remotes option in git-clone (now default)
# - we do not automatically migrate to this (following
# the example set by core git)
+#
+# v5 layout: .rev_db.$UUID => .rev_map.$UUID
+# - newer, more-efficient format that uses 24-bytes per record
+# with no filler space.
+# - use xxd -c24 < .rev_map.$UUID to view and debug
+# - This is a one-way migration, repositories updated to the
+# new format will not be able to use old git-svn without
+# rebuilding the .rev_db. Rebuilding the rev_db is not
+# possible if noMetadata or useSvmProps are set; but should
+# be no problem for users that use the (sensible) defaults.
use strict;
use warnings;
use Carp qw/croak/;