2 # Copyright (C) 2006, Eric Wong <normalperson@yhbt.net>
3 # License: GPL v2 or later
6 use vars qw/ $AUTHOR $VERSION
7 $SVN_URL $SVN_INFO $SVN_WC $SVN_UUID
8 $GIT_SVN_INDEX $GIT_SVN
10 $AUTHOR = 'Eric Wong <normalperson@yhbt.net>';
11 $VERSION = '1.1.0-pre';
14 $GIT_DIR = abs_path($ENV{GIT_DIR} || '.git');
15 $ENV{GIT_DIR} = $GIT_DIR;
17 # make sure the svn binary gives consistent output between locales and TZs:
21 # If SVN:: library support is added, please make the dependencies
22 # optional and preserve the capability to use the command-line client.
23 # use eval { require SVN::... } to make it lazy load
24 # We don't use any modules not in the standard Perl distribution:
27 use File::Basename qw/dirname basename/;
28 use File::Path qw/mkpath/;
29 use Getopt::Long qw/:config gnu_getopt no_ignore_case auto_abbrev/;
31 use POSIX qw/strftime/;
32 my $sha1 = qr/[a-f\d]{40}/;
33 my $sha1_short = qr/[a-f\d]{4,40}/;
34 my ($_revision,$_stdin,$_no_ignore_ext,$_no_stop_copy,$_help,$_rmdir,$_edit,
35 $_find_copies_harder, $_l, $_version, $_upgrade, $_authors);
36 my (@_branch_from, %tree_map, %users);
39 my %fc_opts = ( 'no-ignore-externals' => \$_no_ignore_ext,
40 'branch|b=s' => \@_branch_from,
41 'authors-file|A=s' => \$_authors );
43 # yes, 'native' sets "\n". Patches to fix this for non-*nix systems welcome:
44 my %EOL = ( CR => "\015", LF => "\012", CRLF => "\015\012", native => "\012" );
47 fetch => [ \&fetch, "Download new revisions from SVN",
48 { 'revision|r=s' => \$_revision, %fc_opts } ],
49 init => [ \&init, "Initialize a repo for tracking" .
50 " (requires URL argument)", { } ],
51 commit => [ \&commit, "Commit git revisions to SVN",
52 { 'stdin|' => \$_stdin,
55 'find-copies-harder' => \$_find_copies_harder,
59 'show-ignore' => [ \&show_ignore, "Show svn:ignore listings", { } ],
60 rebuild => [ \&rebuild, "Rebuild git-svn metadata (after git clone)",
61 { 'no-ignore-externals' => \$_no_ignore_ext,
62 'upgrade' => \$_upgrade } ],
65 for (my $i = 0; $i < @ARGV; $i++) {
66 if (defined $cmd{$ARGV[$i]}) {
73 my %opts = %{$cmd{$cmd}->[2]} if (defined $cmd);
75 # convert GetOpt::Long specs for use by git-repo-config
76 foreach my $o (keys %opts) {
78 my ($key) = ($o =~ /^([a-z\-]+)/);
80 my $arg = 'git-repo-config';
81 $arg .= ' --int' if ($o =~ /=i$/);
82 $arg .= ' --bool' if ($o !~ /=[sfi]$/);
83 if (ref $v eq 'ARRAY') {
84 chomp(my @tmp = `$arg --get-all svn.$key`);
87 chomp(my $tmp = `$arg --get svn.$key`);
88 if ($tmp && !($arg =~ / --bool / && $tmp eq 'false')) {
94 GetOptions(%opts, 'help|H|h' => \$_help,
95 'version|V' => \$_version,
96 'id|i=s' => \$GIT_SVN) or exit 1;
98 $GIT_SVN ||= $ENV{GIT_SVN_ID} || 'git-svn';
99 $GIT_SVN_INDEX = "$GIT_DIR/$GIT_SVN/index";
101 $REV_DIR = "$GIT_DIR/$GIT_SVN/revs";
102 $SVN_WC = "$GIT_DIR/$GIT_SVN/tree";
105 version() if $_version;
106 usage(1) unless defined $cmd;
107 load_authors() if $_authors;
109 $cmd{$cmd}->[0]->(@ARGV);
112 ####################### primary functions ######################
114 my $exit = shift || 0;
115 my $fd = $exit ? \*STDERR : \*STDOUT;
117 git-svn - bidirectional operations between a single Subversion tree and git
118 Usage: $0 <command> [options] [arguments]\n
120 print $fd "Available commands:\n" unless $cmd;
122 foreach (sort keys %cmd) {
123 next if $cmd && $cmd ne $_;
124 print $fd ' ',pack('A13',$_),$cmd{$_}->[1],"\n";
125 foreach (keys %{$cmd{$_}->[2]}) {
126 # prints out arguments as they should be passed:
127 my $x = s#=s$## ? '<arg>' : s#=i$## ? '<num>' : '';
128 print $fd ' ' x 17, join(', ', map { length $_ > 1 ?
130 split /\|/,$_)," $x\n";
134 \nGIT_SVN_ID may be set in the environment or via the --id/-i switch to an
135 arbitrary identifier if you're tracking multiple SVN branches/repositories in
136 one git repository and want to keep them separate. See git-svn(1) for more
143 print "git-svn version $VERSION\n";
148 $SVN_URL = shift or undef;
151 sys('git-update-ref',"refs/remotes/$GIT_SVN","$GIT_SVN-HEAD");
153 check_upgrade_needed();
156 my $pid = open(my $rev_list,'-|');
157 defined $pid or croak $!;
159 exec("git-rev-list","refs/remotes/$GIT_SVN") or croak $!;
162 while (<$rev_list>) {
165 croak "Non-SHA1: $c\n" unless $c =~ /^$sha1$/o;
166 my @commit = grep(/^git-svn-id: /,`git-cat-file commit $c`);
167 next if (!@commit); # skip merges
168 my $id = $commit[$#commit];
169 my ($url, $rev, $uuid) = ($id =~ /^git-svn-id:\s(\S+?)\@(\d+)
171 if (!$rev || !$uuid || !$url) {
172 # some of the original repositories I made had
173 # indentifiers like this:
174 ($rev, $uuid) = ($id =~/^git-svn-id:\s(\d+)
176 if (!$rev || !$uuid) {
177 croak "Unable to extract revision or UUID from ",
182 # if we merged or otherwise started elsewhere, this is
183 # how we break out of it
184 next if (defined $SVN_UUID && ($uuid ne $SVN_UUID));
185 next if (defined $SVN_URL && defined $url && ($url ne $SVN_URL));
187 print "r$rev = $c\n";
188 unless (defined $latest) {
189 if (!$SVN_URL && !$url) {
190 croak "SVN repository location required: $url\n";
197 assert_revision_eq_or_unknown($rev, $c);
198 sys('git-update-ref',"$GIT_SVN/revs/$rev",$c);
199 $newest_rev = $rev if ($rev > $newest_rev);
201 close $rev_list or croak $?;
202 if (!chdir $SVN_WC) {
203 svn_cmd_checkout($SVN_URL, $latest, $SVN_WC);
204 chdir $SVN_WC or croak $!;
208 defined $pid or croak $!;
210 my @svn_up = qw(svn up);
211 push @svn_up, '--ignore-externals' unless $_no_ignore_ext;
212 sys(@svn_up,"-r$newest_rev");
213 $ENV{GIT_INDEX_FILE} = $GIT_SVN_INDEX;
215 exec('git-write-tree');
221 Keeping deprecated refs/head/$GIT_SVN-HEAD for now. Please remove it
222 when you have upgraded your tools and habits to use refs/remotes/$GIT_SVN
228 $SVN_URL = shift or die "SVN repository location required " .
229 "as a command-line argument\n";
230 unless (-d $GIT_DIR) {
238 check_upgrade_needed();
239 $SVN_URL ||= file_to_s("$GIT_DIR/$GIT_SVN/info/url");
240 my @log_args = -d $SVN_WC ? ($SVN_WC) : ($SVN_URL);
241 unless ($_revision) {
242 $_revision = -d $SVN_WC ? 'BASE:HEAD' : '0:HEAD';
244 push @log_args, "-r$_revision";
245 push @log_args, '--stop-on-copy' unless $_no_stop_copy;
247 my $svn_log = svn_log_raw(@log_args);
249 my $base = next_log_entry($svn_log) or croak "No base revision!\n";
250 my $last_commit = undef;
251 unless (-d $SVN_WC) {
252 svn_cmd_checkout($SVN_URL,$base->{revision},$SVN_WC);
253 chdir $SVN_WC or croak $!;
255 $last_commit = git_commit($base, @parents);
256 assert_tree($last_commit);
258 chdir $SVN_WC or croak $!;
260 $last_commit = file_to_s("$REV_DIR/$base->{revision}");
262 my @svn_up = qw(svn up);
263 push @svn_up, '--ignore-externals' unless $_no_ignore_ext;
265 while (my $log_msg = next_log_entry($svn_log)) {
266 assert_tree($last_commit);
267 if ($last->{revision} >= $log_msg->{revision}) {
268 croak "Out of order: last >= current: ",
269 "$last->{revision} >= $log_msg->{revision}\n";
271 # Revert is needed for cases like:
272 # https://svn.musicpd.org/Jamming/trunk (r166:167), but
273 # I can't seem to reproduce something like that on a test...
274 sys(qw/svn revert -R ./);
275 assert_svn_wc_clean($last->{revision});
276 sys(@svn_up,"-r$log_msg->{revision}");
277 $last_commit = git_commit($log_msg, $last_commit, @parents);
280 unless (-e "$GIT_DIR/refs/heads/master") {
281 sys(qw(git-update-ref refs/heads/master),$last_commit);
288 check_upgrade_needed();
289 if ($_stdin || !@commits) {
290 print "Reading from stdin...\n";
293 if (/\b($sha1_short)\b/o) {
294 unshift @commits, $1;
299 foreach my $c (@commits) {
300 chomp(my @tmp = safe_qx('git-rev-parse',$c));
301 if (scalar @tmp == 1) {
303 } elsif (scalar @tmp > 1) {
304 push @revs, reverse (safe_qx('git-rev-list',@tmp));
306 die "Failed to rev-parse $c\n";
312 chdir $SVN_WC or croak $!;
313 my $info = svn_info('.');
315 my $svn_current_rev = $info->{'Last Changed Rev'};
316 foreach my $c (@revs) {
317 my $mods = svn_checkout_tree($svn_current_rev, $c);
318 if (scalar @$mods == 0) {
319 print "Skipping, no changes detected\n";
322 $svn_current_rev = svn_commit_tree($svn_current_rev, $c);
324 print "Done committing ",scalar @revs," revisions to SVN\n";
328 require File::Find or die $!;
329 my $exclude_file = "$GIT_DIR/info/exclude";
330 open my $fh, '<', $exclude_file or croak $!;
331 chomp(my @excludes = (<$fh>));
332 close $fh or croak $!;
334 $SVN_URL ||= file_to_s("$GIT_DIR/$GIT_SVN/info/url");
335 chdir $SVN_WC or croak $!;
337 File::Find::find({wanted=>sub{if(lstat $_ && -d _ && -d "$_/.svn"){
339 @{$ign{$_}} = safe_qx(qw(svn propget svn:ignore),$_);
340 }}, no_chdir=>1},'.');
343 foreach (@{$ign{'.'}}) { print '/',$_ if /\S/ }
345 foreach my $i (sort keys %ign) {
346 print "\n# ",$i,"\n";
347 foreach (@{$ign{$i}}) { print '/',$i,'/',$_ if /\S/ }
351 ########################### utility functions #########################
355 my $info = shift || svn_info('.');
356 $SVN_UUID = $info->{'Repository UUID'} or
357 croak "Repository UUID unreadable\n";
358 s_to_file($SVN_UUID,"$GIT_DIR/$GIT_SVN/info/uuid");
362 defined $SVN_URL or croak "SVN repository location required\n";
363 unless (-d $GIT_DIR) {
364 croak "GIT_DIR=$GIT_DIR does not exist!\n";
366 mkpath(["$GIT_DIR/$GIT_SVN"]);
367 mkpath(["$GIT_DIR/$GIT_SVN/info"]);
369 s_to_file($SVN_URL,"$GIT_DIR/$GIT_SVN/info/url");
371 open my $fd, '>>', "$GIT_DIR/$GIT_SVN/info/exclude" or croak $!;
372 print $fd '.svn',"\n";
373 close $fd or croak $!;
376 sub assert_svn_wc_clean {
378 croak "$svn_rev is not an integer!\n" unless ($svn_rev =~ /^\d+$/);
379 my $lcr = svn_info('.')->{'Last Changed Rev'};
380 if ($svn_rev != $lcr) {
381 print STDERR "Checking for copy-tree ... ";
382 my @diff = grep(/^Index: /,(safe_qx(qw(svn diff),
383 "-r$lcr:$svn_rev")));
385 croak "Nope! Expected r$svn_rev, got r$lcr\n";
387 print STDERR "OK!\n";
390 my @status = grep(!/^Performing status on external/,(`svn status`));
391 @status = grep(!/^\s*$/,@status);
392 if (scalar @status) {
393 print STDERR "Tree ($SVN_WC) is not clean:\n";
394 print STDERR $_ foreach @status;
401 croak "Not a sha1: $treeish\n" unless $treeish =~ /^$sha1$/o;
402 chomp(my $type = `git-cat-file -t $treeish`);
404 while ($type eq 'tag') {
405 chomp(($treeish, $type) = `git-cat-file tag $treeish`);
407 if ($type eq 'commit') {
408 $expected = (grep /^tree /,`git-cat-file commit $treeish`)[0];
409 ($expected) = ($expected =~ /^tree ($sha1)$/);
410 die "Unable to get tree from $treeish\n" unless $expected;
411 } elsif ($type eq 'tree') {
412 $expected = $treeish;
414 die "$treeish is a $type, expected tree, tag or commit\n";
417 my $old_index = $ENV{GIT_INDEX_FILE};
418 my $tmpindex = $GIT_SVN_INDEX.'.assert-tmp';
420 unlink $tmpindex or croak $!;
422 $ENV{GIT_INDEX_FILE} = $tmpindex;
424 chomp(my $tree = `git-write-tree`);
426 $ENV{GIT_INDEX_FILE} = $old_index;
428 delete $ENV{GIT_INDEX_FILE};
430 if ($tree ne $expected) {
431 croak "Tree mismatch, Got: $tree, Expected: $expected\n";
436 sub parse_diff_tree {
442 chomp $_; # this gets rid of the trailing "\0"
443 if ($state eq 'meta' && /^:(\d{6})\s(\d{6})\s
444 $sha1\s($sha1)\s([MTCRAD])\d*$/xo) {
445 push @mods, { mode_a => $1, mode_b => $2,
446 sha1_b => $3, chg => $4 };
447 if ($4 =~ /^(?:C|R)$/) {
452 } elsif ($state eq 'file_a') {
453 my $x = $mods[$#mods] or croak "Empty array\n";
454 if ($x->{chg} !~ /^(?:C|R)$/) {
455 croak "Error parsing $_, $x->{chg}\n";
459 } elsif ($state eq 'file_b') {
460 my $x = $mods[$#mods] or croak "Empty array\n";
461 if (exists $x->{file_a} && $x->{chg} !~ /^(?:C|R)$/) {
462 croak "Error parsing $_, $x->{chg}\n";
464 if (!exists $x->{file_a} && $x->{chg} =~ /^(?:C|R)$/) {
465 croak "Error parsing $_, $x->{chg}\n";
470 croak "Error parsing $_\n";
473 close $diff_fh or croak $!;
478 sub svn_check_prop_executable {
480 return if -l $m->{file_b};
481 if ($m->{mode_b} =~ /755$/) {
482 chmod((0755 &~ umask),$m->{file_b}) or croak $!;
483 if ($m->{mode_a} !~ /755$/) {
484 sys(qw(svn propset svn:executable 1), $m->{file_b});
486 -x $m->{file_b} or croak "$m->{file_b} is not executable!\n";
487 } elsif ($m->{mode_b} !~ /755$/ && $m->{mode_a} =~ /755$/) {
488 sys(qw(svn propdel svn:executable), $m->{file_b});
489 chmod((0644 &~ umask),$m->{file_b}) or croak $!;
490 -x $m->{file_b} and croak "$m->{file_b} is executable!\n";
494 sub svn_ensure_parent_path {
495 my $dir_b = dirname(shift);
496 svn_ensure_parent_path($dir_b) if ($dir_b ne File::Spec->curdir);
497 mkpath([$dir_b]) unless (-d $dir_b);
498 sys(qw(svn add -N), $dir_b) unless (-d "$dir_b/.svn");
501 sub precommit_check {
503 my (%rm_file, %rmdir_check, %added_check);
505 my %o = ( D => 0, R => 1, C => 2, A => 3, M => 3, T => 3 );
506 foreach my $m (sort { $o{$a->{chg}} <=> $o{$b->{chg}} } @$mods) {
507 if ($m->{chg} eq 'R') {
508 if (-d $m->{file_b}) {
509 err_dir_to_file("$m->{file_a} => $m->{file_b}");
511 # dir/$file => dir/file/$file
512 my $dirname = dirname($m->{file_b});
513 while ($dirname ne File::Spec->curdir) {
514 if ($dirname ne $m->{file_a}) {
515 $dirname = dirname($dirname);
518 err_file_to_dir("$m->{file_a} => $m->{file_b}");
520 # baz/zzz => baz (baz is a file)
521 $dirname = dirname($m->{file_a});
522 while ($dirname ne File::Spec->curdir) {
523 if ($dirname ne $m->{file_b}) {
524 $dirname = dirname($dirname);
527 err_dir_to_file("$m->{file_a} => $m->{file_b}");
530 if ($m->{chg} =~ /^(D|R)$/) {
531 my $t = $1 eq 'D' ? 'file_b' : 'file_a';
532 $rm_file{ $m->{$t} } = 1;
533 my $dirname = dirname( $m->{$t} );
534 my $basename = basename( $m->{$t} );
535 $rmdir_check{$dirname}->{$basename} = 1;
536 } elsif ($m->{chg} =~ /^(?:A|C)$/) {
537 if (-d $m->{file_b}) {
538 err_dir_to_file($m->{file_b});
540 my $dirname = dirname( $m->{file_b} );
541 my $basename = basename( $m->{file_b} );
542 $added_check{$dirname}->{$basename} = 1;
543 while ($dirname ne File::Spec->curdir) {
544 if ($rm_file{$dirname}) {
545 err_file_to_dir($m->{file_b});
547 $dirname = dirname $dirname;
551 return (\%rmdir_check, \%added_check);
553 sub err_dir_to_file {
555 print STDERR "Node change from directory to file ",
556 "is not supported by Subversion: ",$file,"\n";
559 sub err_file_to_dir {
561 print STDERR "Node change from file to directory ",
562 "is not supported by Subversion: ",$file,"\n";
567 sub svn_checkout_tree {
568 my ($svn_rev, $treeish) = @_;
569 my $from = file_to_s("$REV_DIR/$svn_rev");
571 print "diff-tree $from $treeish\n";
572 my $pid = open my $diff_fh, '-|';
573 defined $pid or croak $!;
575 my @diff_tree = qw(git-diff-tree -z -r -C);
576 push @diff_tree, '--find-copies-harder' if $_find_copies_harder;
577 push @diff_tree, "-l$_l" if defined $_l;
578 exec(@diff_tree, $from, $treeish) or croak $!;
580 my $mods = parse_diff_tree($diff_fh);
582 # git can do empty commits, but SVN doesn't allow it...
585 my ($rm, $add) = precommit_check($mods);
587 my %o = ( D => 1, R => 0, C => -1, A => 3, M => 3, T => 3 );
588 foreach my $m (sort { $o{$a->{chg}} <=> $o{$b->{chg}} } @$mods) {
589 if ($m->{chg} eq 'C') {
590 svn_ensure_parent_path( $m->{file_b} );
591 sys(qw(svn cp), $m->{file_a}, $m->{file_b});
592 apply_mod_line_blob($m);
593 svn_check_prop_executable($m);
594 } elsif ($m->{chg} eq 'D') {
595 sys(qw(svn rm --force), $m->{file_b});
596 } elsif ($m->{chg} eq 'R') {
597 svn_ensure_parent_path( $m->{file_b} );
598 sys(qw(svn mv --force), $m->{file_a}, $m->{file_b});
599 apply_mod_line_blob($m);
600 svn_check_prop_executable($m);
601 } elsif ($m->{chg} eq 'M') {
602 apply_mod_line_blob($m);
603 svn_check_prop_executable($m);
604 } elsif ($m->{chg} eq 'T') {
605 sys(qw(svn rm --force),$m->{file_b});
606 apply_mod_line_blob($m);
607 sys(qw(svn add --force), $m->{file_b});
608 svn_check_prop_executable($m);
609 } elsif ($m->{chg} eq 'A') {
610 svn_ensure_parent_path( $m->{file_b} );
611 apply_mod_line_blob($m);
612 sys(qw(svn add --force), $m->{file_b});
613 svn_check_prop_executable($m);
615 croak "Invalid chg: $m->{chg}\n";
619 assert_tree($treeish);
620 if ($_rmdir) { # remove empty directories
621 handle_rmdir($rm, $add);
623 assert_tree($treeish);
627 # svn ls doesn't work with respect to the current working tree, but what's
628 # in the repository. There's not even an option for it... *sigh*
629 # (added files don't show up and removed files remain in the ls listing)
631 my ($dir, $rm, $add) = @_;
632 chomp(my @ls = safe_qx('svn','ls',$dir));
635 s#/$##; # trailing slashes are evil
636 push @ret, $_ unless $rm->{$dir}->{$_};
638 if (exists $add->{$dir}) {
639 push @ret, keys %{$add->{$dir}};
647 foreach my $dir (sort {length $b <=> length $a} keys %$rm) {
648 my $ls = svn_ls_current($dir, $rm, $add);
649 next if (scalar @$ls);
650 sys(qw(svn rm --force),$dir);
652 my $dn = dirname $dir;
653 $rm->{ $dn }->{ basename $dir } = 1;
654 $ls = svn_ls_current($dn, $rm, $add);
655 while (scalar @$ls == 0 && $dn ne File::Spec->curdir) {
656 sys(qw(svn rm --force),$dn);
659 $rm->{ $dn }->{ $dir } = 1;
660 $ls = svn_ls_current($dn, $rm, $add);
665 sub svn_commit_tree {
666 my ($svn_rev, $commit) = @_;
667 my $commit_msg = "$GIT_DIR/$GIT_SVN/.svn-commit.tmp.$$";
668 my %log_msg = ( msg => '' );
669 open my $msg, '>', $commit_msg or croak $!;
671 chomp(my $type = `git-cat-file -t $commit`);
672 if ($type eq 'commit') {
673 my $pid = open my $msg_fh, '-|';
674 defined $pid or croak $!;
677 exec(qw(git-cat-file commit), $commit) or croak $!;
682 $in_msg = 1 if (/^\s*$/);
683 } elsif (/^git-svn-id: /) {
684 # skip this, we regenerate the correct one
685 # on re-fetch anyways
687 print $msg $_ or croak $!;
690 close $msg_fh or croak $!;
692 close $msg or croak $!;
694 if ($_edit || ($type eq 'tree')) {
695 my $editor = $ENV{VISUAL} || $ENV{EDITOR} || 'vi';
696 system($editor, $commit_msg);
699 # file_to_s removes all trailing newlines, so just use chomp() here:
700 open $msg, '<', $commit_msg or croak $!;
701 { local $/; chomp($log_msg{msg} = <$msg>); }
702 close $msg or croak $!;
704 my ($oneline) = ($log_msg{msg} =~ /([^\n\r]+)/);
705 print "Committing $commit: $oneline\n";
707 my @ci_output = safe_qx(qw(svn commit -F),$commit_msg);
708 my ($committed) = grep(/^Committed revision \d+\./,@ci_output);
710 defined $committed or croak
711 "Commit output failed to parse committed revision!\n",
712 join("\n",@ci_output),"\n";
713 my ($rev_committed) = ($committed =~ /^Committed revision (\d+)\./);
715 my @svn_up = qw(svn up);
716 push @svn_up, '--ignore-externals' unless $_no_ignore_ext;
717 if ($rev_committed == ($svn_rev + 1)) {
718 push @svn_up, "-r$rev_committed";
720 my $info = svn_info('.');
721 my $date = $info->{'Last Changed Date'} or die "Missing date\n";
722 if ($info->{'Last Changed Rev'} != $rev_committed) {
723 croak "$info->{'Last Changed Rev'} != $rev_committed\n"
725 my ($Y,$m,$d,$H,$M,$S,$tz) = ($date =~
726 /(\d{4})\-(\d\d)\-(\d\d)\s
727 (\d\d)\:(\d\d)\:(\d\d)\s([\-\+]\d+)/x)
728 or croak "Failed to parse date: $date\n";
729 $log_msg{date} = "$tz $Y-$m-$d $H:$M:$S";
730 $log_msg{author} = $info->{'Last Changed Author'};
731 $log_msg{revision} = $rev_committed;
732 $log_msg{msg} .= "\n";
733 my $parent = file_to_s("$REV_DIR/$svn_rev");
734 git_commit(\%log_msg, $parent, $commit);
735 return $rev_committed;
738 push @svn_up, "-r$svn_rev";
740 return fetch("$rev_committed=$commit")->{revision};
743 # read the entire log into a temporary file (which is removed ASAP)
744 # and store the file handle + parser state
747 my $log_fh = IO::File->new_tmpfile or croak $!;
749 defined $pid or croak $!;
751 open STDOUT, '>&', $log_fh or croak $!;
752 exec (qw(svn log), @log_args) or croak $!
756 seek $log_fh, 0, 0 or croak $!;
757 return { state => 'sep', fh => $log_fh };
761 my $log = shift; # retval of svn_log_raw()
768 if ($log->{state} eq 'msg') {
770 $ret->{msg} .= $_."\n";
771 unless(--$ret->{lines}) {
772 $log->{state} = 'sep';
775 croak "Log parse error at: $_\n",
781 if ($log->{state} ne 'sep') {
782 croak "Log parse error at: $_\n",
783 "state: $log->{state}\n",
787 $log->{state} = 'rev';
789 # if we have an empty log message, put something there:
791 $ret->{msg} ||= "\n";
792 delete $ret->{lines};
797 if ($log->{state} eq 'rev' && s/^r(\d+)\s*\|\s*//) {
799 my ($author, $date, $lines) = split(/\s*\|\s*/, $_, 3);
800 ($lines) = ($lines =~ /(\d+)/);
801 my ($Y,$m,$d,$H,$M,$S,$tz) = ($date =~
802 /(\d{4})\-(\d\d)\-(\d\d)\s
803 (\d\d)\:(\d\d)\:(\d\d)\s([\-\+]\d+)/x)
804 or croak "Failed to parse date: $date\n";
805 $ret = { revision => $rev,
806 date => "$tz $Y-$m-$d $H:$M:$S",
810 if (defined $_authors && ! defined $users{$author}) {
811 die "Author: $author not defined in ",
814 $log->{state} = 'msg_start';
817 # skip the first blank line of the message:
818 if ($log->{state} eq 'msg_start' && /^$/) {
819 $log->{state} = 'msg';
820 } elsif ($log->{state} eq 'msg') {
822 $ret->{msg} .= $_."\n";
823 unless (--$ret->{lines}) {
824 $log->{state} = 'sep';
827 croak "Log parse error at: $_\n",
828 $ret->{revision},"\n";
836 my $url = shift || $SVN_URL;
838 my $pid = open my $info_fh, '-|';
839 defined $pid or croak $!;
842 exec(qw(svn info),$url) or croak $!;
846 # only single-lines seem to exist in svn info output
849 if (m#^([^:]+)\s*:\s*(\S.*)$#) {
851 push @{$ret->{-order}}, $1;
854 close $info_fh or croak $!;
858 sub sys { system(@_) == 0 or croak $? }
861 my ($from, $to) = @_;
862 my $es = safe_qx(qw/svn propget svn:eol-style/, $to);
863 open my $rfd, '<', $from or croak $!;
864 binmode $rfd or croak $!;
865 open my $wfd, '>', $to or croak $!;
866 binmode $wfd or croak $!;
868 my $eol = $EOL{$es} or undef;
870 print "$eol: $from => $to\n";
875 defined($r = sysread($rfd, $buf, 4096)) or croak $!;
877 $buf =~ s/(?:\015|\012|\015\012)/$eol/gs if $eol;
878 for ($w = 0; $w < $r; $w += $t) {
879 $t = syswrite($wfd, $buf, $r - $w, $w) or croak $!;
884 sub do_update_index {
885 my ($z_cmd, $cmd, $no_text_base) = @_;
887 my $z = open my $p, '-|';
888 defined $z or croak $!;
889 unless ($z) { exec @$z_cmd or croak $! }
891 my $pid = open my $ui, '|-';
892 defined $pid or croak $!;
894 exec('git-update-index',"--$cmd",'-z','--stdin') or croak $!;
897 while (my $x = <$p>) {
899 if (!$no_text_base && lstat $x && ! -l _ &&
900 safe_qx(qw/svn propget svn:keywords/,$x)) {
901 my $mode = -x _ ? 0755 : 0644;
902 my ($v,$d,$f) = File::Spec->splitpath($x);
903 my $tb = File::Spec->catfile($d, '.svn', 'tmp',
904 'text-base',"$f.svn-base");
907 $tb = File::Spec->catfile($d, '.svn',
908 'text-base',"$f.svn-base");
911 unlink $x or croak $!;
913 chmod(($mode &~ umask), $x) or croak $!;
917 close $ui or croak $!;
921 my $no_text_base = shift;
922 do_update_index([qw/git-diff-files --name-only -z/],
925 do_update_index([qw/git-ls-files -z --others/,
926 "--exclude-from=$GIT_DIR/$GIT_SVN/info/exclude"],
932 my ($str, $file, $mode) = @_;
933 open my $fd,'>',$file or croak $!;
934 print $fd $str,"\n" or croak $!;
935 close $fd or croak $!;
936 chmod ($mode &~ umask, $file) if (defined $mode);
941 open my $fd,'<',$file or croak "$!: file: $file\n";
944 close $fd or croak $!;
949 sub assert_revision_unknown {
951 if (-f "$REV_DIR/$revno") {
952 croak "$REV_DIR/$revno already exists! ",
953 "Why are we refetching it?";
959 my @x = safe_qx('git-cat-file','commit',$x);
960 my @y = safe_qx('git-cat-file','commit',$y);
961 if (($y[0] ne $x[0]) || $x[0] !~ /^tree $sha1\n$/
962 || $y[0] !~ /^tree $sha1\n$/) {
963 print STDERR "Trees not equal: $y[0] != $x[0]\n";
969 sub assert_revision_eq_or_unknown {
970 my ($revno, $commit) = @_;
971 if (-f "$REV_DIR/$revno") {
972 my $current = file_to_s("$REV_DIR/$revno");
973 if (($commit ne $current) && !trees_eq($commit, $current)) {
974 croak "$REV_DIR/$revno already exists!\n",
975 "current: $current\nexpected: $commit\n";
982 my ($log_msg, @parents) = @_;
983 assert_revision_unknown($log_msg->{revision});
984 my $out_fh = IO::File->new_tmpfile or croak $!;
986 map_tree_joins() if (@_branch_from && !%tree_map);
988 # commit parents can be conditionally bound to a particular
989 # svn revision via: "svn_revno=commit_sha1", filter them out here:
991 foreach my $p (@parents) {
992 next unless defined $p;
993 if ($p =~ /^(\d+)=($sha1_short)$/o) {
994 if ($1 == $log_msg->{revision}) {
995 push @exec_parents, $2;
998 push @exec_parents, $p if $p =~ /$sha1_short/o;
1003 defined $pid or croak $!;
1005 $ENV{GIT_INDEX_FILE} = $GIT_SVN_INDEX;
1007 chomp(my $tree = `git-write-tree`);
1009 if (exists $tree_map{$tree}) {
1010 my %seen_parent = map { $_ => 1 } @exec_parents;
1011 foreach (@{$tree_map{$tree}}) {
1012 # MAXPARENT is defined to 16 in commit-tree.c:
1013 if ($seen_parent{$_} || @exec_parents > 16) {
1016 push @exec_parents, $_;
1017 $seen_parent{$_} = 1;
1020 my $msg_fh = IO::File->new_tmpfile or croak $!;
1021 print $msg_fh $log_msg->{msg}, "\ngit-svn-id: ",
1022 "$SVN_URL\@$log_msg->{revision}",
1023 " $SVN_UUID\n" or croak $!;
1024 $msg_fh->flush == 0 or croak $!;
1025 seek $msg_fh, 0, 0 or croak $!;
1027 set_commit_env($log_msg);
1029 my @exec = ('git-commit-tree',$tree);
1030 push @exec, '-p', $_ foreach @exec_parents;
1031 open STDIN, '<&', $msg_fh or croak $!;
1032 open STDOUT, '>&', $out_fh or croak $!;
1033 exec @exec or croak $!;
1038 $out_fh->flush == 0 or croak $!;
1039 seek $out_fh, 0, 0 or croak $!;
1040 chomp(my $commit = do { local $/; <$out_fh> });
1041 if ($commit !~ /^$sha1$/o) {
1042 croak "Failed to commit, invalid sha1: $commit\n";
1044 my @update_ref = ('git-update-ref',"refs/remotes/$GIT_SVN",$commit);
1045 if (my $primary_parent = shift @exec_parents) {
1047 defined $pid or croak $!;
1051 exec 'git-rev-parse','--verify',
1052 "refs/remotes/$GIT_SVN^0";
1055 push @update_ref, $primary_parent unless $?;
1058 sys('git-update-ref',"$GIT_SVN/revs/$log_msg->{revision}",$commit);
1059 print "r$log_msg->{revision} = $commit\n";
1063 sub set_commit_env {
1065 my $author = $log_msg->{author};
1066 my ($name,$email) = defined $users{$author} ? @{$users{$author}}
1067 : ($author,"$author\@$SVN_UUID");
1068 $ENV{GIT_AUTHOR_NAME} = $ENV{GIT_COMMITTER_NAME} = $name;
1069 $ENV{GIT_AUTHOR_EMAIL} = $ENV{GIT_COMMITTER_EMAIL} = $email;
1070 $ENV{GIT_AUTHOR_DATE} = $ENV{GIT_COMMITTER_DATE} = $log_msg->{date};
1073 sub apply_mod_line_blob {
1075 if ($m->{mode_b} =~ /^120/) {
1076 blob_to_symlink($m->{sha1_b}, $m->{file_b});
1078 blob_to_file($m->{sha1_b}, $m->{file_b});
1082 sub blob_to_symlink {
1083 my ($blob, $link) = @_;
1084 defined $link or croak "\$link not defined!\n";
1085 croak "Not a sha1: $blob\n" unless $blob =~ /^$sha1$/o;
1086 if (-l $link || -f _) {
1087 unlink $link or croak $!;
1090 my $dest = `git-cat-file blob $blob`; # no newline, so no chomp
1091 symlink $dest, $link or croak $!;
1095 my ($blob, $file) = @_;
1096 defined $file or croak "\$file not defined!\n";
1097 croak "Not a sha1: $blob\n" unless $blob =~ /^$sha1$/o;
1098 if (-l $file || -f _) {
1099 unlink $file or croak $!;
1102 open my $blob_fh, '>', $file or croak "$!: $file\n";
1104 defined $pid or croak $!;
1107 open STDOUT, '>&', $blob_fh or croak $!;
1108 exec('git-cat-file','blob',$blob);
1113 close $blob_fh or croak $!;
1117 my $pid = open my $child, '-|';
1118 defined $pid or croak $!;
1120 exec(@_) or croak $?;
1122 my @ret = (<$child>);
1123 close $child or croak $?;
1124 die $? if $?; # just in case close didn't error out
1125 return wantarray ? @ret : join('',@ret);
1128 sub svn_compat_check {
1129 my @co_help = safe_qx(qw(svn co -h));
1130 unless (grep /ignore-externals/,@co_help) {
1131 print STDERR "W: Installed svn version does not support ",
1132 "--ignore-externals\n";
1133 $_no_ignore_ext = 1;
1135 if (grep /usage: checkout URL\[\@REV\]/,@co_help) {
1136 $_svn_co_url_revs = 1;
1139 # I really, really hope nobody hits this...
1140 unless (grep /stop-on-copy/, (safe_qx(qw(svn log -h)))) {
1142 W: The installed svn version does not support the --stop-on-copy flag in
1144 Lets hope the directory you're tracking is not a branch or tag
1145 and was never moved within the repository...
1151 # *sigh*, new versions of svn won't honor -r<rev> without URL@<rev>,
1152 # (and they won't honor URL@<rev> without -r<rev>, too!)
1153 sub svn_cmd_checkout {
1154 my ($url, $rev, $dir) = @_;
1155 my @cmd = ('svn','co', "-r$rev");
1156 push @cmd, '--ignore-externals' unless $_no_ignore_ext;
1157 $url .= "\@$rev" if $_svn_co_url_revs;
1158 sys(@cmd, $url, $dir);
1161 sub check_upgrade_needed {
1163 my $pid = open my $child, '-|';
1164 defined $pid or croak $!;
1167 exec('git-rev-parse',"$GIT_SVN-HEAD") or croak $?;
1169 my @ret = (<$child>);
1170 close $child or croak $?;
1171 die $? if $?; # just in case close didn't error out
1172 return wantarray ? @ret : join('',@ret);
1175 my $head = eval { safe_qx('git-rev-parse',"refs/remotes/$GIT_SVN") };
1177 print STDERR "Please run: $0 rebuild --upgrade\n";
1182 # fills %tree_map with a reverse mapping of trees to commits. Useful
1183 # for finding parents to commit on.
1184 sub map_tree_joins {
1185 foreach my $br (@_branch_from) {
1186 my $pid = open my $pipe, '-|';
1187 defined $pid or croak $!;
1189 exec(qw(git-rev-list --pretty=raw), $br) or croak $?;
1192 if (/^commit ($sha1)$/o) {
1194 my ($tree) = (<$pipe> =~ /^tree ($sha1)$/o);
1195 unless (defined $tree) {
1196 die "Failed to parse commit $commit\n";
1198 push @{$tree_map{$tree}}, $commit;
1201 close $pipe or croak $?;
1205 # '<svn username> = real-name <email address>' mapping based on git-svnimport:
1207 open my $authors, '<', $_authors or die "Can't open $_authors $!\n";
1208 while (<$authors>) {
1210 next unless /^(\S+?)\s*=\s*(.+?)\s*<(.+)>\s*$/;
1211 my ($user, $name, $email) = ($1, $2, $3);
1212 $users{$user} = [$name, $email];
1214 close $authors or croak $!;
1221 $svn_log hashref (as returned by svn_log_raw)
1223 fh => file handle of the log file,
1224 state => state of the log file parser (sep/msg/rev/msg_start...)
1227 $log_msg hashref as returned by next_log_entry($svn_log)
1229 msg => 'whitespace-formatted log entry
1230 ', # trailing newline is preserved
1231 revision => '8', # integer
1232 date => '2004-02-24T17:01:44.108345Z', # commit date
1233 author => 'committer name'
1237 @mods = array of diff-index line hashes, each element represents one line
1238 of diff-index output
1240 diff-index line ($m hash)
1242 mode_a => first column of diff-index output, no leading ':',
1243 mode_b => second column of diff-index output,
1244 sha1_b => sha1sum of the final blob,
1245 chg => change type [MCRADT],
1246 file_a => original file name of a file (iff chg is 'C' or 'R')
1247 file_b => new/current file name of a file (any chg)