Andrew's git / gitweb.git / git-svnimport.perl
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git-svnimport.perlon commit git-upload-pack: More efficient usage of the has_sha1 array (794f9fe)
   1#!/usr/bin/perl -w
   2
   3# 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.
  12
  13require v5.8.0; # for shell-safe open("-|",LIST)
  14use strict;
  15use warnings;
  16use Getopt::Std;
  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;
  27
  28die "Need CVN:Core 1.2.1 or better" if $SVN::Core::VERSION lt "1.2.1";
  29
  30$SIG{'PIPE'}="IGNORE";
  31$ENV{'TZ'}="UTC";
  32
  33our($opt_h,$opt_o,$opt_v,$opt_u,$opt_C,$opt_i,$opt_m,$opt_M,$opt_t,$opt_T,$opt_b,$opt_s,$opt_l,$opt_d,$opt_D);
  34
  35sub usage() {
  36        print STDERR <<END;
  37Usage: ${\basename $0}     # fetch/update GIT from CVS
  38       [-o branch-for-HEAD] [-h] [-v] [-l max_num_changes]
  39       [-C GIT_repository] [-t tagname] [-T trunkname] [-b branchname]
  40       [-d|-D] [-i] [-u] [-s start_chg] [-m] [-M regex] [SVN_URL]
  41END
  42        exit(1);
  43}
  44
  45getopts("b:C:dDhil:mM:o:s:t:T:uv") or usage();
  46usage if $opt_h;
  47
  48my $tag_name = $opt_t || "tags";
  49my $trunk_name = $opt_T || "trunk";
  50my $branch_name = $opt_b || "branches";
  51
  52@ARGV == 1 or @ARGV == 2 or usage();
  53
  54$opt_o ||= "origin";
  55$opt_s ||= 1;
  56$opt_l = 100 unless defined $opt_l;
  57my $git_tree = $opt_C;
  58$git_tree ||= ".";
  59
  60my $svn_url = $ARGV[0];
  61my $svn_dir = $ARGV[1];
  62
  63our @mergerx = ();
  64if ($opt_m) {
  65        @mergerx = ( qr/\W(?:from|of|merge|merging|merged) (\w+)/i );
  66}
  67if ($opt_M) {
  68        push (@mergerx, qr/$opt_M/);
  69}
  70
  71select(STDERR); $|=1; select(STDOUT);
  72
  73
  74package SVNconn;
  75# Basic SVN connection.
  76# We're only interested in connecting and downloading, so ...
  77
  78use File::Spec;
  79use File::Temp qw(tempfile);
  80use POSIX qw(strftime dup2);
  81
  82sub new {
  83        my($what,$repo) = @_;
  84        $what=ref($what) if ref($what);
  85
  86        my $self = {};
  87        $self->{'buffer'} = "";
  88        bless($self,$what);
  89
  90        $repo =~ s#/+$##;
  91        $self->{'fullrep'} = $repo;
  92        $self->conn();
  93
  94        return $self;
  95}
  96
  97sub conn {
  98        my $self = shift;
  99        my $repo = $self->{'fullrep'};
 100        my $s = SVN::Ra->new($repo);
 101
 102        die "SVN connection to $repo: $!\n" unless defined $s;
 103        $self->{'svn'} = $s;
 104        $self->{'repo'} = $repo;
 105        $self->{'maxrev'} = $s->get_latest_revnum();
 106}
 107
 108sub file {
 109        my($self,$path,$rev) = @_;
 110
 111        my ($fh, $name) = tempfile('gitsvn.XXXXXX',
 112                    DIR => File::Spec->tmpdir(), UNLINK => 1);
 113
 114        print "... $rev $path ...\n" if $opt_v;
 115        eval { $self->{'svn'}->get_file($path,$rev,$fh); };
 116        if($@) {
 117                return undef if $@ =~ /Attempted to get checksum/;
 118                die $@;
 119        }
 120        close ($fh);
 121
 122        return $name;
 123}
 124
 125package main;
 126use URI;
 127
 128my $svn = $svn_url;
 129$svn .= "/$svn_dir" if defined $svn_dir;
 130$svn = SVNconn->new($svn);
 131
 132my $lwp_ua;
 133if($opt_d or $opt_D) {
 134        $svn_url = URI->new($svn_url)->canonical;
 135        if($opt_D) {
 136                $svn_dir =~ s#/*$#/#;
 137        } else {
 138                $svn_dir = "";
 139        }
 140        if ($svn_url->scheme eq "http") {
 141                use LWP::UserAgent;
 142                $lwp_ua = LWP::UserAgent->new(keep_alive => 1, requests_redirectable => []);
 143        } else {
 144                print STDERR "Warning: not HTTP; turning off direct file access\n";
 145                $opt_d=0;
 146        }
 147}
 148
 149sub pdate($) {
 150        my($d) = @_;
 151        $d =~ m#(\d\d\d\d)-(\d\d)-(\d\d)T(\d\d):(\d\d):(\d\d)#
 152                or die "Unparseable date: $d\n";
 153        my $y=$1; $y-=1900 if $y>1900;
 154        return timegm($6||0,$5,$4,$3,$2-1,$y);
 155}
 156
 157sub getwd() {
 158        my $pwd = `pwd`;
 159        chomp $pwd;
 160        return $pwd;
 161}
 162
 163
 164sub get_headref($$) {
 165    my $name    = shift;
 166    my $git_dir = shift;
 167    my $sha;
 168
 169    if (open(C,"$git_dir/refs/heads/$name")) {
 170        chomp($sha = <C>);
 171        close(C);
 172        length($sha) == 40
 173            or die "Cannot get head id for $name ($sha): $!\n";
 174    }
 175    return $sha;
 176}
 177
 178
 179-d $git_tree
 180        or mkdir($git_tree,0777)
 181        or die "Could not create $git_tree: $!";
 182chdir($git_tree);
 183
 184my $orig_branch = "";
 185my $forward_master = 0;
 186my %branches;
 187
 188my $git_dir = $ENV{"GIT_DIR"} || ".git";
 189$git_dir = getwd()."/".$git_dir unless $git_dir =~ m#^/#;
 190$ENV{"GIT_DIR"} = $git_dir;
 191my $orig_git_index;
 192$orig_git_index = $ENV{GIT_INDEX_FILE} if exists $ENV{GIT_INDEX_FILE};
 193my ($git_ih, $git_index) = tempfile('gitXXXXXX', SUFFIX => '.idx',
 194                                    DIR => File::Spec->tmpdir());
 195close ($git_ih);
 196$ENV{GIT_INDEX_FILE} = $git_index;
 197my $maxnum = 0;
 198my $last_rev = "";
 199my $last_branch;
 200my $current_rev = $opt_s-1;
 201unless(-d $git_dir) {
 202        system("git-init-db");
 203        die "Cannot init the GIT db at $git_tree: $?\n" if $?;
 204        system("git-read-tree");
 205        die "Cannot init an empty tree: $?\n" if $?;
 206
 207        $last_branch = $opt_o;
 208        $orig_branch = "";
 209} else {
 210        -f "$git_dir/refs/heads/$opt_o"
 211                or die "Branch '$opt_o' does not exist.\n".
 212                       "Either use the correct '-o branch' option,\n".
 213                       "or import to a new repository.\n";
 214
 215        -f "$git_dir/svn2git"
 216                or die "'$git_dir/svn2git' does not exist.\n".
 217                       "You need that file for incremental imports.\n";
 218        $last_branch = basename(readlink("$git_dir/HEAD"));
 219        unless($last_branch) {
 220                warn "Cannot read the last branch name: $! -- assuming 'master'\n";
 221                $last_branch = "master";
 222        }
 223        $orig_branch = $last_branch;
 224        $last_rev = get_headref($orig_branch, $git_dir);
 225        if (-f "$git_dir/SVN2GIT_HEAD") {
 226                die <<EOM;
 227SVN2GIT_HEAD exists.
 228Make sure your working directory corresponds to HEAD and remove SVN2GIT_HEAD.
 229You may need to run
 230
 231    git-read-tree -m -u SVN2GIT_HEAD HEAD
 232EOM
 233        }
 234        system('cp', "$git_dir/HEAD", "$git_dir/SVN2GIT_HEAD");
 235
 236        $forward_master =
 237            $opt_o ne 'master' && -f "$git_dir/refs/heads/master" &&
 238            system('cmp', '-s', "$git_dir/refs/heads/master",
 239                                "$git_dir/refs/heads/$opt_o") == 0;
 240
 241        # populate index
 242        system('git-read-tree', $last_rev);
 243        die "read-tree failed: $?\n" if $?;
 244
 245        # Get the last import timestamps
 246        open my $B,"<", "$git_dir/svn2git";
 247        while(<$B>) {
 248                chomp;
 249                my($num,$branch,$ref) = split;
 250                $branches{$branch}{$num} = $ref;
 251                $branches{$branch}{"LAST"} = $ref;
 252                $current_rev = $num if $current_rev < $num;
 253        }
 254        close($B);
 255}
 256-d $git_dir
 257        or die "Could not create git subdir ($git_dir).\n";
 258
 259open BRANCHES,">>", "$git_dir/svn2git";
 260
 261sub get_file($$$) {
 262        my($rev,$branch,$path) = @_;
 263
 264        # revert split_path(), below
 265        my $svnpath;
 266        $path = "" if $path eq "/"; # this should not happen, but ...
 267        if($branch eq "/") {
 268                $svnpath = "$trunk_name/$path";
 269        } elsif($branch =~ m#^/#) {
 270                $svnpath = "$tag_name$branch/$path";
 271        } else {
 272                $svnpath = "$branch_name/$branch/$path";
 273        }
 274
 275        # now get it
 276        my $name;
 277        if($opt_d) {
 278                my($req,$res);
 279
 280                # /svn/!svn/bc/2/django/trunk/django-docs/build.py
 281                my $url=$svn_url->clone();
 282                $url->path($url->path."/!svn/bc/$rev/$svn_dir$svnpath");
 283                print "... $path...\n" if $opt_v;
 284                $req = HTTP::Request->new(GET => $url);
 285                $res = $lwp_ua->request($req);
 286                if ($res->is_success) {
 287                        my $fh;
 288                        ($fh, $name) = tempfile('gitsvn.XXXXXX',
 289                        DIR => File::Spec->tmpdir(), UNLINK => 1);
 290                        print $fh $res->content;
 291                        close($fh) or die "Could not write $name: $!\n";
 292                } else {
 293                        return undef if $res->code == 301; # directory?
 294                        die $res->status_line." at $url\n";
 295                }
 296        } else {
 297                $name = $svn->file("/$svnpath",$rev);
 298                return undef unless defined $name;
 299        }
 300
 301        open my $F, '-|', "git-hash-object", "-w", $name
 302                or die "Cannot create object: $!\n";
 303        my $sha = <$F>;
 304        chomp $sha;
 305        close $F;
 306        unlink $name;
 307        my $mode = "0644"; # SV does not seem to store any file modes
 308        return [$mode, $sha, $path];
 309}
 310
 311sub split_path($$) {
 312        my($rev,$path) = @_;
 313        my $branch;
 314
 315        if($path =~ s#^/\Q$tag_name\E/([^/]+)/?##) {
 316                $branch = "/$1";
 317        } elsif($path =~ s#^/\Q$trunk_name\E/?##) {
 318                $branch = "/";
 319        } elsif($path =~ s#^/\Q$branch_name\E/([^/]+)/?##) {
 320                $branch = $1;
 321        } else {
 322                print STDERR "$rev: Unrecognized path: $path\n";
 323                return ()
 324        }
 325        $path = "/" if $path eq "";
 326        return ($branch,$path);
 327}
 328
 329sub copy_subdir($$$$$$) {
 330        # Somebody copied a whole subdirectory.
 331        # We need to find the index entries from the old version which the
 332        # SVN log entry points to, and add them to the new place.
 333
 334        my($newrev,$newbranch,$path,$oldpath,$rev,$new) = @_;
 335        my($branch,$srcpath) = split_path($rev,$oldpath);
 336
 337        my $gitrev = $branches{$branch}{$rev};
 338        unless($gitrev) {
 339                print STDERR "$newrev:$newbranch: could not find $oldpath \@ $rev\n";
 340                return;
 341        }
 342        print "$newrev:$newbranch:$path: copying from $branch:$srcpath @ $rev\n" if $opt_v;
 343        $srcpath =~ s#/*$#/#;
 344        open my $f,"-|","git-ls-tree","-r","-z",$gitrev,$srcpath;
 345        local $/ = "\0";
 346        while(<$f>) {
 347                chomp;
 348                my($m,$p) = split(/\t/,$_,2);
 349                my($mode,$type,$sha1) = split(/ /,$m);
 350                next if $type ne "blob";
 351                $p = substr($p,length($srcpath)-1);
 352                print "... found $path$p ...\n" if $opt_v;
 353                push(@$new,[$mode,$sha1,$path.$p]);
 354        }
 355        close($f) or
 356                print STDERR "$newrev:$newbranch: could not list files in $oldpath \@ $rev\n";
 357}
 358
 359sub commit {
 360        my($branch, $changed_paths, $revision, $author, $date, $message) = @_;
 361        my($author_name,$author_email,$dest);
 362        my(@old,@new);
 363
 364        if (not defined $author) {
 365                $author_name = $author_email = "unknown";
 366        } elsif ($author =~ /^(.*?)\s+<(.*)>$/) {
 367                ($author_name, $author_email) = ($1, $2);
 368        } else {
 369                $author =~ s/^<(.*)>$/$1/;
 370                $author_name = $author_email = $author;
 371        }
 372        $date = pdate($date);
 373
 374        my $tag;
 375        my $parent;
 376        if($branch eq "/") { # trunk
 377                $parent = $opt_o;
 378        } elsif($branch =~ m#^/(.+)#) { # tag
 379                $tag = 1;
 380                $parent = $1;
 381        } else { # "normal" branch
 382                # nothing to do
 383                $parent = $branch;
 384        }
 385        $dest = $parent;
 386
 387        my $prev = $changed_paths->{"/"};
 388        if($prev and $prev->[0] eq "A") {
 389                delete $changed_paths->{"/"};
 390                my $oldpath = $prev->[1];
 391                my $rev;
 392                if(defined $oldpath) {
 393                        my $p;
 394                        ($parent,$p) = split_path($revision,$oldpath);
 395                        if($parent eq "/") {
 396                                $parent = $opt_o;
 397                        } else {
 398                                $parent =~ s#^/##; # if it's a tag
 399                        }
 400                } else {
 401                        $parent = undef;
 402                }
 403        }
 404
 405        my $rev;
 406        if($revision > $opt_s and defined $parent) {
 407                open(H,"git-rev-parse --verify $parent |");
 408                $rev = <H>;
 409                close(H) or do {
 410                        print STDERR "$revision: cannot find commit '$parent'!\n";
 411                        return;
 412                };
 413                chop $rev;
 414                if(length($rev) != 40) {
 415                        print STDERR "$revision: cannot find commit '$parent'!\n";
 416                        return;
 417                }
 418                $rev = $branches{($parent eq $opt_o) ? "/" : $parent}{"LAST"};
 419                if($revision != $opt_s and not $rev) {
 420                        print STDERR "$revision: do not know ancestor for '$parent'!\n";
 421                        return;
 422                }
 423        } else {
 424                $rev = undef;
 425        }
 426
 427#       if($prev and $prev->[0] eq "A") {
 428#               if(not $tag) {
 429#                       unless(open(H,"> $git_dir/refs/heads/$branch")) {
 430#                               print STDERR "$revision: Could not create branch $branch: $!\n";
 431#                               $state=11;
 432#                               next;
 433#                       }
 434#                       print H "$rev\n"
 435#                               or die "Could not write branch $branch: $!";
 436#                       close(H)
 437#                               or die "Could not write branch $branch: $!";
 438#               }
 439#       }
 440        if(not defined $rev) {
 441                unlink($git_index);
 442        } elsif ($rev ne $last_rev) {
 443                print "Switching from $last_rev to $rev ($branch)\n" if $opt_v;
 444                system("git-read-tree", $rev);
 445                die "read-tree failed for $rev: $?\n" if $?;
 446                $last_rev = $rev;
 447        }
 448
 449        my $cid;
 450        if($tag and not %$changed_paths) {
 451                $cid = $rev;
 452        } else {
 453                my @paths = sort keys %$changed_paths;
 454                foreach my $path(@paths) {
 455                        my $action = $changed_paths->{$path};
 456
 457                        if ($action->[0] eq "A") {
 458                                my $f = get_file($revision,$branch,$path);
 459                                if($f) {
 460                                        push(@new,$f) if $f;
 461                                } elsif($action->[1]) {
 462                                        copy_subdir($revision,$branch,$path,$action->[1],$action->[2],\@new);
 463                                } else {
 464                                        my $opath = $action->[3];
 465                                        print STDERR "$revision: $branch: could not fetch '$opath'\n";
 466                                }
 467                        } elsif ($action->[0] eq "D") {
 468                                push(@old,$path);
 469                        } elsif ($action->[0] eq "M") {
 470                                my $f = get_file($revision,$branch,$path);
 471                                push(@new,$f) if $f;
 472                        } elsif ($action->[0] eq "R") {
 473                                # refer to a file/tree in an earlier commit
 474                                push(@old,$path); # remove any old stuff
 475
 476                                # ... and add any new stuff
 477                                my($b,$srcpath) = split_path($revision,$action->[1]);
 478                                $srcpath =~ s#/*$#/#;
 479                                open my $F,"-|","git-ls-tree","-r","-z", $branches{$b}{$action->[2]}, $srcpath;
 480                                local $/ = "\0";
 481                                while(<$F>) {
 482                                        chomp;
 483                                        my($m,$p) = split(/\t/,$_,2);
 484                                        my($mode,$type,$sha1) = split(/ /,$m);
 485                                        next if $type ne "blob";
 486                                        $p = substr($p,length($srcpath)-1);
 487                                        push(@new,[$mode,$sha1,$path.$p]);
 488                                }
 489                                close($F);
 490                        } else {
 491                                die "$revision: unknown action '".$action->[0]."' for $path\n";
 492                        }
 493                }
 494
 495                if(@old) {
 496                        open my $F, "-|", "git-ls-files", "-z", @old or die $!;
 497                        @old = ();
 498                        local $/ = "\0";
 499                        while(<$F>) {
 500                                chomp;
 501                                push(@old,$_);
 502                        }
 503                        close($F);
 504
 505                        while(@old) {
 506                                my @o2;
 507                                if(@old > 55) {
 508                                        @o2 = splice(@old,0,50);
 509                                } else {
 510                                        @o2 = @old;
 511                                        @old = ();
 512                                }
 513                                system("git-update-index","--force-remove","--",@o2);
 514                                die "Cannot remove files: $?\n" if $?;
 515                        }
 516                }
 517                while(@new) {
 518                        my @n2;
 519                        if(@new > 12) {
 520                                @n2 = splice(@new,0,10);
 521                        } else {
 522                                @n2 = @new;
 523                                @new = ();
 524                        }
 525                        system("git-update-index","--add",
 526                                (map { ('--cacheinfo', @$_) } @n2));
 527                        die "Cannot add files: $?\n" if $?;
 528                }
 529
 530                my $pid = open(C,"-|");
 531                die "Cannot fork: $!" unless defined $pid;
 532                unless($pid) {
 533                        exec("git-write-tree");
 534                        die "Cannot exec git-write-tree: $!\n";
 535                }
 536                chomp(my $tree = <C>);
 537                length($tree) == 40
 538                        or die "Cannot get tree id ($tree): $!\n";
 539                close(C)
 540                        or die "Error running git-write-tree: $?\n";
 541                print "Tree ID $tree\n" if $opt_v;
 542
 543                my $pr = IO::Pipe->new() or die "Cannot open pipe: $!\n";
 544                my $pw = IO::Pipe->new() or die "Cannot open pipe: $!\n";
 545                $pid = fork();
 546                die "Fork: $!\n" unless defined $pid;
 547                unless($pid) {
 548                        $pr->writer();
 549                        $pw->reader();
 550                        open(OUT,">&STDOUT");
 551                        dup2($pw->fileno(),0);
 552                        dup2($pr->fileno(),1);
 553                        $pr->close();
 554                        $pw->close();
 555
 556                        my @par = ();
 557                        @par = ("-p",$rev) if defined $rev;
 558
 559                        # loose detection of merges
 560                        # based on the commit msg
 561                        foreach my $rx (@mergerx) {
 562                                if ($message =~ $rx) {
 563                                        my $mparent = $1;
 564                                        if ($mparent eq 'HEAD') { $mparent = $opt_o };
 565                                        if ( -e "$git_dir/refs/heads/$mparent") {
 566                                                $mparent = get_headref($mparent, $git_dir);
 567                                                push @par, '-p', $mparent;
 568                                                print OUT "Merge parent branch: $mparent\n" if $opt_v;
 569                                        }
 570                                }
 571                        }
 572
 573                        exec("env",
 574                                "GIT_AUTHOR_NAME=$author_name",
 575                                "GIT_AUTHOR_EMAIL=$author_email",
 576                                "GIT_AUTHOR_DATE=".strftime("+0000 %Y-%m-%d %H:%M:%S",gmtime($date)),
 577                                "GIT_COMMITTER_NAME=$author_name",
 578                                "GIT_COMMITTER_EMAIL=$author_email",
 579                                "GIT_COMMITTER_DATE=".strftime("+0000 %Y-%m-%d %H:%M:%S",gmtime($date)),
 580                                "git-commit-tree", $tree,@par);
 581                        die "Cannot exec git-commit-tree: $!\n";
 582                }
 583                $pw->writer();
 584                $pr->reader();
 585
 586                $message =~ s/[\s\n]+\z//;
 587
 588                print $pw "$message\n"
 589                        or die "Error writing to git-commit-tree: $!\n";
 590                $pw->close();
 591
 592                print "Committed change $revision:$branch ".strftime("%Y-%m-%d %H:%M:%S",gmtime($date)).")\n" if $opt_v;
 593                chomp($cid = <$pr>);
 594                length($cid) == 40
 595                        or die "Cannot get commit id ($cid): $!\n";
 596                print "Commit ID $cid\n" if $opt_v;
 597                $pr->close();
 598
 599                waitpid($pid,0);
 600                die "Error running git-commit-tree: $?\n" if $?;
 601        }
 602
 603        if(not defined $dest) {
 604                print "... no known parent\n" if $opt_v;
 605        } elsif(not $tag) {
 606                print "Writing to refs/heads/$dest\n" if $opt_v;
 607                open(C,">$git_dir/refs/heads/$dest") and
 608                print C ("$cid\n") and
 609                close(C)
 610                        or die "Cannot write branch $dest for update: $!\n";
 611        }
 612
 613        if($tag) {
 614                my($in, $out) = ('','');
 615                $last_rev = "-" if %$changed_paths;
 616                # the tag was 'complex', i.e. did not refer to a "real" revision
 617
 618                $dest =~ tr/_/\./ if $opt_u;
 619
 620                my $pid = open2($in, $out, 'git-mktag');
 621                print $out ("object $cid\n".
 622                    "type commit\n".
 623                    "tag $dest\n".
 624                    "tagger $author_name <$author_email>\n") and
 625                close($out)
 626                    or die "Cannot create tag object $dest: $!\n";
 627
 628                my $tagobj = <$in>;
 629                chomp $tagobj;
 630
 631                if ( !close($in) or waitpid($pid, 0) != $pid or
 632                                $? != 0 or $tagobj !~ /^[0123456789abcdef]{40}$/ ) {
 633                        die "Cannot create tag object $dest: $!\n";
 634                }
 635
 636                open(C,">$git_dir/refs/tags/$dest") and
 637                print C ("$tagobj\n") and
 638                close(C)
 639                        or die "Cannot create tag $branch: $!\n";
 640
 641                print "Created tag '$dest' on '$branch'\n" if $opt_v;
 642        }
 643        $branches{$branch}{"LAST"} = $cid;
 644        $branches{$branch}{$revision} = $cid;
 645        $last_rev = $cid;
 646        print BRANCHES "$revision $branch $cid\n";
 647        print "DONE: $revision $dest $cid\n" if $opt_v;
 648}
 649
 650my ($changed_paths, $revision, $author, $date, $message, $pool) = @_;
 651sub _commit_all {
 652        ($changed_paths, $revision, $author, $date, $message, $pool) = @_;
 653        my %p;
 654        while(my($path,$action) = each %$changed_paths) {
 655                $p{$path} = [ $action->action,$action->copyfrom_path, $action->copyfrom_rev, $path ];
 656        }
 657        $changed_paths = \%p;
 658}
 659
 660sub commit_all {
 661        my %done;
 662        my @col;
 663        my $pref;
 664        my $branch;
 665
 666        while(my($path,$action) = each %$changed_paths) {
 667                ($branch,$path) = split_path($revision,$path);
 668                next if not defined $branch;
 669                $done{$branch}{$path} = $action;
 670        }
 671        while(($branch,$changed_paths) = each %done) {
 672                commit($branch, $changed_paths, $revision, $author, $date, $message);
 673        }
 674}
 675
 676while(++$current_rev <= $svn->{'maxrev'}) {
 677        $svn->{'svn'}->get_log("/",$current_rev,$current_rev,$current_rev,1,1,\&_commit_all,"");
 678        commit_all();
 679        if($opt_l and not --$opt_l) {
 680                print STDERR "Stopping, because there is a memory leak (in the SVN library).\n";
 681                print STDERR "Please repeat this command; it will continue safely\n";
 682                last;
 683        }
 684}
 685
 686
 687unlink($git_index);
 688
 689if (defined $orig_git_index) {
 690        $ENV{GIT_INDEX_FILE} = $orig_git_index;
 691} else {
 692        delete $ENV{GIT_INDEX_FILE};
 693}
 694
 695# Now switch back to the branch we were in before all of this happened
 696if($orig_branch) {
 697        print "DONE\n" if $opt_v and (not defined $opt_l or $opt_l > 0);
 698        system("cp","$git_dir/refs/heads/$opt_o","$git_dir/refs/heads/master")
 699                if $forward_master;
 700        unless ($opt_i) {
 701                system('git-read-tree', '-m', '-u', 'SVN2GIT_HEAD', 'HEAD');
 702                die "read-tree failed: $?\n" if $?;
 703        }
 704} else {
 705        $orig_branch = "master";
 706        print "DONE; creating $orig_branch branch\n" if $opt_v and (not defined $opt_l or $opt_l > 0);
 707        system("cp","$git_dir/refs/heads/$opt_o","$git_dir/refs/heads/master")
 708                unless -f "$git_dir/refs/heads/master";
 709        unlink("$git_dir/HEAD");
 710        symlink("refs/heads/$orig_branch","$git_dir/HEAD");
 711        unless ($opt_i) {
 712                system('git checkout');
 713                die "checkout failed: $?\n" if $?;
 714        }
 715}
 716unlink("$git_dir/SVN2GIT_HEAD");
 717close(BRANCHES);