1#!/usr/bin/perl -w
2# This tool is copyright (c) 2005, Matthias Urlichs.
4# It is released under the Gnu Public License, version 2.
5#
6# The basic idea is to pull and analyze SVN changes.
7#
8# Checking out the files is done by a single long-running SVN connection.
9#
10# The head revision is on branch "origin" by default.
11# You can change that with the '-o' option.
12use strict;
14use warnings;
15use Getopt::Std;
16use File::Copy;
17use File::Spec;
18use File::Temp qw(tempfile);
19use File::Path qw(mkpath);
20use File::Basename qw(basename dirname);
21use Time::Local;
22use IO::Pipe;
23use POSIX qw(strftime dup2);
24use IPC::Open2;
25use SVN::Core;
26use SVN::Ra;
27die "Need SVN:Core 1.2.1 or better" if $SVN::Core::VERSION lt "1.2.1";
29$SIG{'PIPE'}="IGNORE";
31$ENV{'TZ'}="UTC";
32our($opt_h,$opt_o,$opt_v,$opt_u,$opt_C,$opt_i,$opt_m,$opt_M,$opt_t,$opt_T,
34 $opt_b,$opt_r,$opt_I,$opt_A,$opt_s,$opt_l,$opt_d,$opt_D,$opt_S,$opt_F,
35 $opt_P,$opt_R);
36sub usage() {
38 print STDERR <<END;
39Usage: ${\basename $0} # fetch/update GIT from SVN
40 [-o branch-for-HEAD] [-h] [-v] [-l max_rev] [-R repack_each_revs]
41 [-C GIT_repository] [-t tagname] [-T trunkname] [-b branchname]
42 [-d|-D] [-i] [-u] [-r] [-I ignorefilename] [-s start_chg]
43 [-m] [-M regex] [-A author_file] [-S] [-F] [-P project_name] [SVN_URL]
44END
45 exit(1);
46}
47getopts("A:b:C:dDFhiI:l:mM:o:rs:t:T:SP:R:uv") or usage();
49usage if $opt_h;
50my $tag_name = $opt_t || "tags";
52my $trunk_name = $opt_T || "trunk";
53my $branch_name = $opt_b || "branches";
54my $project_name = $opt_P || "";
55$project_name = "/" . $project_name if ($project_name);
56my $repack_after = $opt_R || 1000;
57@ARGV == 1 or @ARGV == 2 or usage();
59$opt_o ||= "origin";
61$opt_s ||= 1;
62my $git_tree = $opt_C;
63$git_tree ||= ".";
64my $svn_url = $ARGV[0];
66my $svn_dir = $ARGV[1];
67our @mergerx = ();
69if ($opt_m) {
70 my $branch_esc = quotemeta ($branch_name);
71 my $trunk_esc = quotemeta ($trunk_name);
72 @mergerx =
73 (
74 qr!\b(?:merg(?:ed?|ing))\b.*?\b((?:(?<=$branch_esc/)[\w\.\-]+)|(?:$trunk_esc))\b!i,
75 qr!\b(?:from|of)\W+((?:(?<=$branch_esc/)[\w\.\-]+)|(?:$trunk_esc))\b!i,
76 qr!\b(?:from|of)\W+(?:the )?([\w\.\-]+)[-\s]branch\b!i
77 );
78}
79if ($opt_M) {
80 unshift (@mergerx, qr/$opt_M/);
81}
82# Absolutize filename now, since we will have chdir'ed by the time we
84# get around to opening it.
85$opt_A = File::Spec->rel2abs($opt_A) if $opt_A;
86our %users = ();
88our $users_file = undef;
89sub read_users($) {
90 $users_file = File::Spec->rel2abs(@_);
91 die "Cannot open $users_file\n" unless -f $users_file;
92 open(my $authors,$users_file);
93 while(<$authors>) {
94 chomp;
95 next unless /^(\S+?)\s*=\s*(.+?)\s*<(.+)>\s*$/;
96 (my $user,my $name,my $email) = ($1,$2,$3);
97 $users{$user} = [$name,$email];
98 }
99 close($authors);
100}
101select(STDERR); $|=1; select(STDOUT);
103package SVNconn;
106# Basic SVN connection.
107# We're only interested in connecting and downloading, so ...
108use File::Spec;
110use File::Temp qw(tempfile);
111use POSIX qw(strftime dup2);
112use Fcntl qw(SEEK_SET);
113sub new {
115 my($what,$repo) = @_;
116 $what=ref($what) if ref($what);
117 my $self = {};
119 $self->{'buffer'} = "";
120 bless($self,$what);
121 $repo =~ s#/+$##;
123 $self->{'fullrep'} = $repo;
124 $self->conn();
125 return $self;
127}
128sub conn {
130 my $self = shift;
131 my $repo = $self->{'fullrep'};
132 my $auth = SVN::Core::auth_open ([SVN::Client::get_simple_provider,
133 SVN::Client::get_ssl_server_trust_file_provider,
134 SVN::Client::get_username_provider]);
135 my $s = SVN::Ra->new(url => $repo, auth => $auth);
136 die "SVN connection to $repo: $!\n" unless defined $s;
137 $self->{'svn'} = $s;
138 $self->{'repo'} = $repo;
139 $self->{'maxrev'} = $s->get_latest_revnum();
140}
141sub file {
143 my($self,$path,$rev) = @_;
144 my ($fh, $name) = tempfile('gitsvn.XXXXXX',
146 DIR => File::Spec->tmpdir(), UNLINK => 1);
147 print "... $rev $path ...\n" if $opt_v;
149 my (undef, $properties);
150 my $pool = SVN::Pool->new();
151 $path =~ s#^/*##;
152 eval { (undef, $properties)
153 = $self->{'svn'}->get_file($path,$rev,$fh,$pool); };
154 $pool->clear;
155 if($@) {
156 return undef if $@ =~ /Attempted to get checksum/;
157 die $@;
158 }
159 my $mode;
160 if (exists $properties->{'svn:executable'}) {
161 $mode = '100755';
162 } elsif (exists $properties->{'svn:special'}) {
163 my ($special_content, $filesize);
164 $filesize = tell $fh;
165 seek $fh, 0, SEEK_SET;
166 read $fh, $special_content, $filesize;
167 if ($special_content =~ s/^link //) {
168 $mode = '120000';
169 seek $fh, 0, SEEK_SET;
170 truncate $fh, 0;
171 print $fh $special_content;
172 } else {
173 die "unexpected svn:special file encountered";
174 }
175 } else {
176 $mode = '100644';
177 }
178 close ($fh);
179 return ($name, $mode);
181}
182sub ignore {
184 my($self,$path,$rev) = @_;
185 print "... $rev $path ...\n" if $opt_v;
187 $path =~ s#^/*##;
188 my (undef,undef,$properties)
189 = $self->{'svn'}->get_dir($path,$rev,undef);
190 if (exists $properties->{'svn:ignore'}) {
191 my ($fh, $name) = tempfile('gitsvn.XXXXXX',
192 DIR => File::Spec->tmpdir(),
193 UNLINK => 1);
194 print $fh $properties->{'svn:ignore'};
195 close($fh);
196 return $name;
197 } else {
198 return undef;
199 }
200}
201sub dir_list {
203 my($self,$path,$rev) = @_;
204 $path =~ s#^/*##;
205 my ($dirents,undef,$properties)
206 = $self->{'svn'}->get_dir($path,$rev,undef);
207 return $dirents;
208}
209package main;
211use URI;
212our $svn = $svn_url;
214$svn .= "/$svn_dir" if defined $svn_dir;
215my $svn2 = SVNconn->new($svn);
216$svn = SVNconn->new($svn);
217my $lwp_ua;
219if($opt_d or $opt_D) {
220 $svn_url = URI->new($svn_url)->canonical;
221 if($opt_D) {
222 $svn_dir =~ s#/*$#/#;
223 } else {
224 $svn_dir = "";
225 }
226 if ($svn_url->scheme eq "http") {
227 use LWP::UserAgent;
228 $lwp_ua = LWP::UserAgent->new(keep_alive => 1, requests_redirectable => []);
229 } else {
230 print STDERR "Warning: not HTTP; turning off direct file access\n";
231 $opt_d=0;
232 }
233}
234sub pdate($) {
236 my($d) = @_;
237 $d =~ m#(\d\d\d\d)-(\d\d)-(\d\d)T(\d\d):(\d\d):(\d\d)#
238 or die "Unparseable date: $d\n";
239 my $y=$1; $y-=1900 if $y>1900;
240 return timegm($6||0,$5,$4,$3,$2-1,$y);
241}
242sub getwd() {
244 my $pwd = `pwd`;
245 chomp $pwd;
246 return $pwd;
247}
248sub get_headref($$) {
251 my $name = shift;
252 my $git_dir = shift;
253 my $sha;
254 if (open(C,"$git_dir/refs/heads/$name")) {
256 chomp($sha = <C>);
257 close(C);
258 length($sha) == 40
259 or die "Cannot get head id for $name ($sha): $!\n";
260 }
261 return $sha;
262}
263-d $git_tree
266 or mkdir($git_tree,0777)
267 or die "Could not create $git_tree: $!";
268chdir($git_tree);
269my $orig_branch = "";
271my $forward_master = 0;
272my %branches;
273my $git_dir = $ENV{"GIT_DIR"} || ".git";
275$git_dir = getwd()."/".$git_dir unless $git_dir =~ m#^/#;
276$ENV{"GIT_DIR"} = $git_dir;
277my $orig_git_index;
278$orig_git_index = $ENV{GIT_INDEX_FILE} if exists $ENV{GIT_INDEX_FILE};
279my ($git_ih, $git_index) = tempfile('gitXXXXXX', SUFFIX => '.idx',
280 DIR => File::Spec->tmpdir());
281close ($git_ih);
282$ENV{GIT_INDEX_FILE} = $git_index;
283my $maxnum = 0;
284my $last_rev = "";
285my $last_branch;
286my $current_rev = $opt_s || 1;
287unless(-d $git_dir) {
288 system("git-init");
289 die "Cannot init the GIT db at $git_tree: $?\n" if $?;
290 system("git-read-tree");
291 die "Cannot init an empty tree: $?\n" if $?;
292 $last_branch = $opt_o;
294 $orig_branch = "";
295} else {
296 -f "$git_dir/refs/heads/$opt_o"
297 or die "Branch '$opt_o' does not exist.\n".
298 "Either use the correct '-o branch' option,\n".
299 "or import to a new repository.\n";
300 -f "$git_dir/svn2git"
302 or die "'$git_dir/svn2git' does not exist.\n".
303 "You need that file for incremental imports.\n";
304 open(F, "git-symbolic-ref HEAD |") or
305 die "Cannot run git-symbolic-ref: $!\n";
306 chomp ($last_branch = <F>);
307 $last_branch = basename($last_branch);
308 close(F);
309 unless($last_branch) {
310 warn "Cannot read the last branch name: $! -- assuming 'master'\n";
311 $last_branch = "master";
312 }
313 $orig_branch = $last_branch;
314 $last_rev = get_headref($orig_branch, $git_dir);
315 if (-f "$git_dir/SVN2GIT_HEAD") {
316 die <<EOM;
317SVN2GIT_HEAD exists.
318Make sure your working directory corresponds to HEAD and remove SVN2GIT_HEAD.
319You may need to run
320 git-read-tree -m -u SVN2GIT_HEAD HEAD
322EOM
323 }
324 system('cp', "$git_dir/HEAD", "$git_dir/SVN2GIT_HEAD");
325 $forward_master =
327 $opt_o ne 'master' && -f "$git_dir/refs/heads/master" &&
328 system('cmp', '-s', "$git_dir/refs/heads/master",
329 "$git_dir/refs/heads/$opt_o") == 0;
330 # populate index
332 system('git-read-tree', $last_rev);
333 die "read-tree failed: $?\n" if $?;
334 # Get the last import timestamps
336 open my $B,"<", "$git_dir/svn2git";
337 while(<$B>) {
338 chomp;
339 my($num,$branch,$ref) = split;
340 $branches{$branch}{$num} = $ref;
341 $branches{$branch}{"LAST"} = $ref;
342 $current_rev = $num+1 if $current_rev <= $num;
343 }
344 close($B);
345}
346-d $git_dir
347 or die "Could not create git subdir ($git_dir).\n";
348my $default_authors = "$git_dir/svn-authors";
350if ($opt_A) {
351 read_users($opt_A);
352 copy($opt_A,$default_authors) or die "Copy failed: $!";
353} else {
354 read_users($default_authors) if -f $default_authors;
355}
356open BRANCHES,">>", "$git_dir/svn2git";
358sub node_kind($$) {
360 my ($svnpath, $revision) = @_;
361 my $pool=SVN::Pool->new;
362 $svnpath =~ s#^/*##;
363 my $kind = $svn->{'svn'}->check_path($svnpath,$revision,$pool);
364 $pool->clear;
365 return $kind;
366}
367sub get_file($$$) {
369 my($svnpath,$rev,$path) = @_;
370 # now get it
372 my ($name,$mode);
373 if($opt_d) {
374 my($req,$res);
375 # /svn/!svn/bc/2/django/trunk/django-docs/build.py
377 my $url=$svn_url->clone();
378 $url->path($url->path."/!svn/bc/$rev/$svn_dir$svnpath");
379 print "... $path...\n" if $opt_v;
380 $req = HTTP::Request->new(GET => $url);
381 $res = $lwp_ua->request($req);
382 if ($res->is_success) {
383 my $fh;
384 ($fh, $name) = tempfile('gitsvn.XXXXXX',
385 DIR => File::Spec->tmpdir(), UNLINK => 1);
386 print $fh $res->content;
387 close($fh) or die "Could not write $name: $!\n";
388 } else {
389 return undef if $res->code == 301; # directory?
390 die $res->status_line." at $url\n";
391 }
392 $mode = '0644'; # can't obtain mode via direct http request?
393 } else {
394 ($name,$mode) = $svn->file("$svnpath",$rev);
395 return undef unless defined $name;
396 }
397 my $pid = open(my $F, '-|');
399 die $! unless defined $pid;
400 if (!$pid) {
401 exec("git-hash-object", "-w", $name)
402 or die "Cannot create object: $!\n";
403 }
404 my $sha = <$F>;
405 chomp $sha;
406 close $F;
407 unlink $name;
408 return [$mode, $sha, $path];
409}
410sub get_ignore($$$$$) {
412 my($new,$old,$rev,$path,$svnpath) = @_;
413 return unless $opt_I;
415 my $name = $svn->ignore("$svnpath",$rev);
416 if ($path eq '/') {
417 $path = $opt_I;
418 } else {
419 $path = File::Spec->catfile($path,$opt_I);
420 }
421 if (defined $name) {
422 my $pid = open(my $F, '-|');
423 die $! unless defined $pid;
424 if (!$pid) {
425 exec("git-hash-object", "-w", $name)
426 or die "Cannot create object: $!\n";
427 }
428 my $sha = <$F>;
429 chomp $sha;
430 close $F;
431 unlink $name;
432 push(@$new,['0644',$sha,$path]);
433 } elsif (defined $old) {
434 push(@$old,$path);
435 }
436}
437sub project_path($$)
439{
440 my ($path, $project) = @_;
441 $path = "/".$path unless ($path =~ m#^\/#) ;
443 return $1 if ($path =~ m#^$project\/(.*)$#);
444 $path =~ s#\.#\\\.#g;
446 $path =~ s#\+#\\\+#g;
447 return "/" if ($project =~ m#^$path.*$#);
448 return undef;
450}
451sub split_path($$) {
453 my($rev,$path) = @_;
454 my $branch;
455 if($path =~ s#^/\Q$tag_name\E/([^/]+)/?##) {
457 $branch = "/$1";
458 } elsif($path =~ s#^/\Q$trunk_name\E/?##) {
459 $branch = "/";
460 } elsif($path =~ s#^/\Q$branch_name\E/([^/]+)/?##) {
461 $branch = $1;
462 } else {
463 my %no_error = (
464 "/" => 1,
465 "/$tag_name" => 1,
466 "/$branch_name" => 1
467 );
468 print STDERR "$rev: Unrecognized path: $path\n" unless (defined $no_error{$path});
469 return ()
470 }
471 if ($path eq "") {
472 $path = "/";
473 } elsif ($project_name) {
474 $path = project_path($path, $project_name);
475 }
476 return ($branch,$path);
477}
478sub branch_rev($$) {
480 my ($srcbranch,$uptorev) = @_;
482 my $bbranches = $branches{$srcbranch};
484 my @revs = reverse sort { ($a eq 'LAST' ? 0 : $a) <=> ($b eq 'LAST' ? 0 : $b) } keys %$bbranches;
485 my $therev;
486 foreach my $arev(@revs) {
487 next if ($arev eq 'LAST');
488 if ($arev <= $uptorev) {
489 $therev = $arev;
490 last;
491 }
492 }
493 return $therev;
494}
495sub expand_svndir($$$);
497sub expand_svndir($$$)
499{
500 my ($svnpath, $rev, $path) = @_;
501 my @list;
502 get_ignore(\@list, undef, $rev, $path, $svnpath);
503 my $dirents = $svn->dir_list($svnpath, $rev);
504 foreach my $p(keys %$dirents) {
505 my $kind = node_kind($svnpath.'/'.$p, $rev);
506 if ($kind eq $SVN::Node::file) {
507 my $f = get_file($svnpath.'/'.$p, $rev, $path.'/'.$p);
508 push(@list, $f) if $f;
509 } elsif ($kind eq $SVN::Node::dir) {
510 push(@list,
511 expand_svndir($svnpath.'/'.$p, $rev, $path.'/'.$p));
512 }
513 }
514 return @list;
515}
516sub copy_path($$$$$$$$) {
518 # Somebody copied a whole subdirectory.
519 # We need to find the index entries from the old version which the
520 # SVN log entry points to, and add them to the new place.
521 my($newrev,$newbranch,$path,$oldpath,$rev,$node_kind,$new,$parents) = @_;
523 my($srcbranch,$srcpath) = split_path($rev,$oldpath);
525 unless(defined $srcbranch && defined $srcpath) {
526 print "Path not found when copying from $oldpath @ $rev.\n".
527 "Will try to copy from original SVN location...\n"
528 if $opt_v;
529 push (@$new, expand_svndir($oldpath, $rev, $path));
530 return;
531 }
532 my $therev = branch_rev($srcbranch, $rev);
533 my $gitrev = $branches{$srcbranch}{$therev};
534 unless($gitrev) {
535 print STDERR "$newrev:$newbranch: could not find $oldpath \@ $rev\n";
536 return;
537 }
538 if ($srcbranch ne $newbranch) {
539 push(@$parents, $branches{$srcbranch}{'LAST'});
540 }
541 print "$newrev:$newbranch:$path: copying from $srcbranch:$srcpath @ $rev\n" if $opt_v;
542 if ($node_kind eq $SVN::Node::dir) {
543 $srcpath =~ s#/*$#/#;
544 }
545
546 my $pid = open my $f,'-|';
547 die $! unless defined $pid;
548 if (!$pid) {
549 exec("git-ls-tree","-r","-z",$gitrev,$srcpath)
550 or die $!;
551 }
552 local $/ = "\0";
553 while(<$f>) {
554 chomp;
555 my($m,$p) = split(/\t/,$_,2);
556 my($mode,$type,$sha1) = split(/ /,$m);
557 next if $type ne "blob";
558 if ($node_kind eq $SVN::Node::dir) {
559 $p = $path . substr($p,length($srcpath)-1);
560 } else {
561 $p = $path;
562 }
563 push(@$new,[$mode,$sha1,$p]);
564 }
565 close($f) or
566 print STDERR "$newrev:$newbranch: could not list files in $oldpath \@ $rev\n";
567}
568sub commit {
570 my($branch, $changed_paths, $revision, $author, $date, $message) = @_;
571 my($committer_name,$committer_email,$dest);
572 my($author_name,$author_email);
573 my(@old,@new,@parents);
574 if (not defined $author or $author eq "") {
576 $committer_name = $committer_email = "unknown";
577 } elsif (defined $users_file) {
578 die "User $author is not listed in $users_file\n"
579 unless exists $users{$author};
580 ($committer_name,$committer_email) = @{$users{$author}};
581 } elsif ($author =~ /^(.*?)\s+<(.*)>$/) {
582 ($committer_name, $committer_email) = ($1, $2);
583 } else {
584 $author =~ s/^<(.*)>$/$1/;
585 $committer_name = $committer_email = $author;
586 }
587 if ($opt_F && $message =~ /From:\s+(.*?)\s+<(.*)>\s*\n/) {
589 ($author_name, $author_email) = ($1, $2);
590 print "Author from From: $1 <$2>\n" if ($opt_v);;
591 } elsif ($opt_S && $message =~ /Signed-off-by:\s+(.*?)\s+<(.*)>\s*\n/) {
592 ($author_name, $author_email) = ($1, $2);
593 print "Author from Signed-off-by: $1 <$2>\n" if ($opt_v);;
594 } else {
595 $author_name = $committer_name;
596 $author_email = $committer_email;
597 }
598 $date = pdate($date);
600 my $tag;
602 my $parent;
603 if($branch eq "/") { # trunk
604 $parent = $opt_o;
605 } elsif($branch =~ m#^/(.+)#) { # tag
606 $tag = 1;
607 $parent = $1;
608 } else { # "normal" branch
609 # nothing to do
610 $parent = $branch;
611 }
612 $dest = $parent;
613 my $prev = $changed_paths->{"/"};
615 if($prev and $prev->[0] eq "A") {
616 delete $changed_paths->{"/"};
617 my $oldpath = $prev->[1];
618 my $rev;
619 if(defined $oldpath) {
620 my $p;
621 ($parent,$p) = split_path($revision,$oldpath);
622 if(defined $parent) {
623 if($parent eq "/") {
624 $parent = $opt_o;
625 } else {
626 $parent =~ s#^/##; # if it's a tag
627 }
628 }
629 } else {
630 $parent = undef;
631 }
632 }
633 my $rev;
635 if($revision > $opt_s and defined $parent) {
636 open(H,"git-rev-parse --verify $parent |");
637 $rev = <H>;
638 close(H) or do {
639 print STDERR "$revision: cannot find commit '$parent'!\n";
640 return;
641 };
642 chop $rev;
643 if(length($rev) != 40) {
644 print STDERR "$revision: cannot find commit '$parent'!\n";
645 return;
646 }
647 $rev = $branches{($parent eq $opt_o) ? "/" : $parent}{"LAST"};
648 if($revision != $opt_s and not $rev) {
649 print STDERR "$revision: do not know ancestor for '$parent'!\n";
650 return;
651 }
652 } else {
653 $rev = undef;
654 }
655# if($prev and $prev->[0] eq "A") {
657# if(not $tag) {
658# unless(open(H,"> $git_dir/refs/heads/$branch")) {
659# print STDERR "$revision: Could not create branch $branch: $!\n";
660# $state=11;
661# next;
662# }
663# print H "$rev\n"
664# or die "Could not write branch $branch: $!";
665# close(H)
666# or die "Could not write branch $branch: $!";
667# }
668# }
669 if(not defined $rev) {
670 unlink($git_index);
671 } elsif ($rev ne $last_rev) {
672 print "Switching from $last_rev to $rev ($branch)\n" if $opt_v;
673 system("git-read-tree", $rev);
674 die "read-tree failed for $rev: $?\n" if $?;
675 $last_rev = $rev;
676 }
677 push (@parents, $rev) if defined $rev;
679 my $cid;
681 if($tag and not %$changed_paths) {
682 $cid = $rev;
683 } else {
684 my @paths = sort keys %$changed_paths;
685 foreach my $path(@paths) {
686 my $action = $changed_paths->{$path};
687 if ($action->[0] eq "R") {
689 # refer to a file/tree in an earlier commit
690 push(@old,$path); # remove any old stuff
691 }
692 if(($action->[0] eq "A") || ($action->[0] eq "R")) {
693 my $node_kind = node_kind($action->[3], $revision);
694 if ($node_kind eq $SVN::Node::file) {
695 my $f = get_file($action->[3],
696 $revision, $path);
697 if ($f) {
698 push(@new,$f) if $f;
699 } else {
700 my $opath = $action->[3];
701 print STDERR "$revision: $branch: could not fetch '$opath'\n";
702 }
703 } elsif ($node_kind eq $SVN::Node::dir) {
704 if($action->[1]) {
705 copy_path($revision, $branch,
706 $path, $action->[1],
707 $action->[2], $node_kind,
708 \@new, \@parents);
709 } else {
710 get_ignore(\@new, \@old, $revision,
711 $path, $action->[3]);
712 }
713 }
714 } elsif ($action->[0] eq "D") {
715 push(@old,$path);
716 } elsif ($action->[0] eq "M") {
717 my $node_kind = node_kind($action->[3], $revision);
718 if ($node_kind eq $SVN::Node::file) {
719 my $f = get_file($action->[3],
720 $revision, $path);
721 push(@new,$f) if $f;
722 } elsif ($node_kind eq $SVN::Node::dir) {
723 get_ignore(\@new, \@old, $revision,
724 $path, $action->[3]);
725 }
726 } else {
727 die "$revision: unknown action '".$action->[0]."' for $path\n";
728 }
729 }
730 while(@old) {
732 my @o1;
733 if(@old > 55) {
734 @o1 = splice(@old,0,50);
735 } else {
736 @o1 = @old;
737 @old = ();
738 }
739 my $pid = open my $F, "-|";
740 die "$!" unless defined $pid;
741 if (!$pid) {
742 exec("git-ls-files", "-z", @o1) or die $!;
743 }
744 @o1 = ();
745 local $/ = "\0";
746 while(<$F>) {
747 chomp;
748 push(@o1,$_);
749 }
750 close($F);
751 while(@o1) {
753 my @o2;
754 if(@o1 > 55) {
755 @o2 = splice(@o1,0,50);
756 } else {
757 @o2 = @o1;
758 @o1 = ();
759 }
760 system("git-update-index","--force-remove","--",@o2);
761 die "Cannot remove files: $?\n" if $?;
762 }
763 }
764 while(@new) {
765 my @n2;
766 if(@new > 12) {
767 @n2 = splice(@new,0,10);
768 } else {
769 @n2 = @new;
770 @new = ();
771 }
772 system("git-update-index","--add",
773 (map { ('--cacheinfo', @$_) } @n2));
774 die "Cannot add files: $?\n" if $?;
775 }
776 my $pid = open(C,"-|");
778 die "Cannot fork: $!" unless defined $pid;
779 unless($pid) {
780 exec("git-write-tree");
781 die "Cannot exec git-write-tree: $!\n";
782 }
783 chomp(my $tree = <C>);
784 length($tree) == 40
785 or die "Cannot get tree id ($tree): $!\n";
786 close(C)
787 or die "Error running git-write-tree: $?\n";
788 print "Tree ID $tree\n" if $opt_v;
789 my $pr = IO::Pipe->new() or die "Cannot open pipe: $!\n";
791 my $pw = IO::Pipe->new() or die "Cannot open pipe: $!\n";
792 $pid = fork();
793 die "Fork: $!\n" unless defined $pid;
794 unless($pid) {
795 $pr->writer();
796 $pw->reader();
797 open(OUT,">&STDOUT");
798 dup2($pw->fileno(),0);
799 dup2($pr->fileno(),1);
800 $pr->close();
801 $pw->close();
802 my @par = ();
804 # loose detection of merges
806 # based on the commit msg
807 foreach my $rx (@mergerx) {
808 if ($message =~ $rx) {
809 my $mparent = $1;
810 if ($mparent eq 'HEAD') { $mparent = $opt_o };
811 if ( -e "$git_dir/refs/heads/$mparent") {
812 $mparent = get_headref($mparent, $git_dir);
813 push (@parents, $mparent);
814 print OUT "Merge parent branch: $mparent\n" if $opt_v;
815 }
816 }
817 }
818 my %seen_parents = ();
819 my @unique_parents = grep { ! $seen_parents{$_} ++ } @parents;
820 foreach my $bparent (@unique_parents) {
821 push @par, '-p', $bparent;
822 print OUT "Merge parent branch: $bparent\n" if $opt_v;
823 }
824 exec("env",
826 "GIT_AUTHOR_NAME=$author_name",
827 "GIT_AUTHOR_EMAIL=$author_email",
828 "GIT_AUTHOR_DATE=".strftime("+0000 %Y-%m-%d %H:%M:%S",gmtime($date)),
829 "GIT_COMMITTER_NAME=$committer_name",
830 "GIT_COMMITTER_EMAIL=$committer_email",
831 "GIT_COMMITTER_DATE=".strftime("+0000 %Y-%m-%d %H:%M:%S",gmtime($date)),
832 "git-commit-tree", $tree,@par);
833 die "Cannot exec git-commit-tree: $!\n";
834 }
835 $pw->writer();
836 $pr->reader();
837 $message =~ s/[\s\n]+\z//;
839 $message = "r$revision: $message" if $opt_r;
840 print $pw "$message\n"
842 or die "Error writing to git-commit-tree: $!\n";
843 $pw->close();
844 print "Committed change $revision:$branch ".strftime("%Y-%m-%d %H:%M:%S",gmtime($date)).")\n" if $opt_v;
846 chomp($cid = <$pr>);
847 length($cid) == 40
848 or die "Cannot get commit id ($cid): $!\n";
849 print "Commit ID $cid\n" if $opt_v;
850 $pr->close();
851 waitpid($pid,0);
853 die "Error running git-commit-tree: $?\n" if $?;
854 }
855 if (not defined $cid) {
857 $cid = $branches{"/"}{"LAST"};
858 }
859 if(not defined $dest) {
861 print "... no known parent\n" if $opt_v;
862 } elsif(not $tag) {
863 print "Writing to refs/heads/$dest\n" if $opt_v;
864 open(C,">$git_dir/refs/heads/$dest") and
865 print C ("$cid\n") and
866 close(C)
867 or die "Cannot write branch $dest for update: $!\n";
868 }
869 if($tag) {
871 my($in, $out) = ('','');
872 $last_rev = "-" if %$changed_paths;
873 # the tag was 'complex', i.e. did not refer to a "real" revision
874 $dest =~ tr/_/\./ if $opt_u;
876 $branch = $dest;
877 my $pid = open2($in, $out, 'git-mktag');
879 print $out ("object $cid\n".
880 "type commit\n".
881 "tag $dest\n".
882 "tagger $committer_name <$committer_email> 0 +0000\n") and
883 close($out)
884 or die "Cannot create tag object $dest: $!\n";
885 my $tagobj = <$in>;
887 chomp $tagobj;
888 if ( !close($in) or waitpid($pid, 0) != $pid or
890 $? != 0 or $tagobj !~ /^[0123456789abcdef]{40}$/ ) {
891 die "Cannot create tag object $dest: $!\n";
892 }
893 open(C,">$git_dir/refs/tags/$dest") and
895 print C ("$tagobj\n") and
896 close(C)
897 or die "Cannot create tag $branch: $!\n";
898 print "Created tag '$dest' on '$branch'\n" if $opt_v;
900 }
901 $branches{$branch}{"LAST"} = $cid;
902 $branches{$branch}{$revision} = $cid;
903 $last_rev = $cid;
904 print BRANCHES "$revision $branch $cid\n";
905 print "DONE: $revision $dest $cid\n" if $opt_v;
906}
907sub commit_all {
909 # Recursive use of the SVN connection does not work
910 local $svn = $svn2;
911 my ($changed_paths, $revision, $author, $date, $message, $pool) = @_;
913 my %p;
914 while(my($path,$action) = each %$changed_paths) {
915 $p{$path} = [ $action->action,$action->copyfrom_path, $action->copyfrom_rev, $path ];
916 }
917 $changed_paths = \%p;
918 my %done;
920 my @col;
921 my $pref;
922 my $branch;
923 while(my($path,$action) = each %$changed_paths) {
925 ($branch,$path) = split_path($revision,$path);
926 next if not defined $branch;
927 next if not defined $path;
928 $done{$branch}{$path} = $action;
929 }
930 while(($branch,$changed_paths) = each %done) {
931 commit($branch, $changed_paths, $revision, $author, $date, $message);
932 }
933}
934$opt_l = $svn->{'maxrev'} if not defined $opt_l or $opt_l > $svn->{'maxrev'};
936if ($opt_l < $current_rev) {
938 print "Up to date: no new revisions to fetch!\n" if $opt_v;
939 unlink("$git_dir/SVN2GIT_HEAD");
940 exit;
941}
942print "Processing from $current_rev to $opt_l ...\n" if $opt_v;
944my $from_rev;
946my $to_rev = $current_rev - 1;
947while ($to_rev < $opt_l) {
949 $from_rev = $to_rev + 1;
950 $to_rev = $from_rev + $repack_after;
951 $to_rev = $opt_l if $opt_l < $to_rev;
952 print "Fetching from $from_rev to $to_rev ...\n" if $opt_v;
953 my $pool=SVN::Pool->new;
954 $svn->{'svn'}->get_log("/",$from_rev,$to_rev,0,1,1,\&commit_all,$pool);
955 $pool->clear;
956 my $pid = fork();
957 die "Fork: $!\n" unless defined $pid;
958 unless($pid) {
959 exec("git-repack", "-d")
960 or die "Cannot repack: $!\n";
961 }
962 waitpid($pid, 0);
963}
964unlink($git_index);
967if (defined $orig_git_index) {
969 $ENV{GIT_INDEX_FILE} = $orig_git_index;
970} else {
971 delete $ENV{GIT_INDEX_FILE};
972}
973# Now switch back to the branch we were in before all of this happened
975if($orig_branch) {
976 print "DONE\n" if $opt_v and (not defined $opt_l or $opt_l > 0);
977 system("cp","$git_dir/refs/heads/$opt_o","$git_dir/refs/heads/master")
978 if $forward_master;
979 unless ($opt_i) {
980 system('git-read-tree', '-m', '-u', 'SVN2GIT_HEAD', 'HEAD');
981 die "read-tree failed: $?\n" if $?;
982 }
983} else {
984 $orig_branch = "master";
985 print "DONE; creating $orig_branch branch\n" if $opt_v and (not defined $opt_l or $opt_l > 0);
986 system("cp","$git_dir/refs/heads/$opt_o","$git_dir/refs/heads/master")
987 unless -f "$git_dir/refs/heads/master";
988 system('git-update-ref', 'HEAD', "$orig_branch");
989 unless ($opt_i) {
990 system('git checkout');
991 die "checkout failed: $?\n" if $?;
992 }
993}
994unlink("$git_dir/SVN2GIT_HEAD");
995close(BRANCHES);