[ SEA-GHOST MINI SHELL]
#!/usr/bin/perl
# This tool is copyright (c) 2005, Matthias Urlichs.
# It is released under the Gnu Public License, version 2.
#
# The basic idea is to pull and analyze SVN changes.
#
# Checking out the files is done by a single long-running SVN connection.
#
# The head revision is on branch "origin" by default.
# You can change that with the '-o' option.
use strict;
use warnings;
use Getopt::Std;
use File::Copy;
use File::Spec;
use File::Temp qw(tempfile);
use File::Path qw(mkpath);
use File::Basename qw(basename dirname);
use Time::Local;
use IO::Pipe;
use POSIX qw(strftime dup2);
use IPC::Open2;
use SVN::Core;
use SVN::Ra;
die "Need SVN:Core 1.2.1 or better" if $SVN::Core::VERSION lt "1.2.1";
$SIG{'PIPE'}="IGNORE";
$ENV{'TZ'}="UTC";
our($opt_h,$opt_o,$opt_v,$opt_u,$opt_C,$opt_i,$opt_m,$opt_M,$opt_t,$opt_T,
$opt_b,$opt_r,$opt_I,$opt_A,$opt_s,$opt_l,$opt_d,$opt_D,$opt_S,$opt_F,
$opt_P,$opt_R);
sub usage() {
print STDERR <<END;
usage: ${\basename $0} # fetch/update GIT from SVN
[-o branch-for-HEAD] [-h] [-v] [-l max_rev] [-R repack_each_revs]
[-C GIT_repository] [-t tagname] [-T trunkname] [-b branchname]
[-d|-D] [-i] [-u] [-r] [-I ignorefilename] [-s start_chg]
[-m] [-M regex] [-A author_file] [-S] [-F] [-P project_name] [SVN_URL]
END
exit(1);
}
getopts("A:b:C:dDFhiI:l:mM:o:rs:t:T:SP:R:uv") or usage();
usage if $opt_h;
my $tag_name = $opt_t || "tags";
my $trunk_name = defined $opt_T ? $opt_T : "trunk";
my $branch_name = $opt_b || "branches";
my $project_name = $opt_P || "";
$project_name = "/" . $project_name if ($project_name);
my $repack_after = $opt_R || 1000;
my $root_pool = SVN::Pool->new_default;
@ARGV == 1 or @ARGV == 2 or usage();
$opt_o ||= "origin";
$opt_s ||= 1;
my $git_tree = $opt_C;
$git_tree ||= ".";
my $svn_url = $ARGV[0];
my $svn_dir = $ARGV[1];
our @mergerx = ();
if ($opt_m) {
my $branch_esc = quotemeta ($branch_name);
my $trunk_esc = quotemeta ($trunk_name);
@mergerx =
(
qr!\b(?:merg(?:ed?|ing))\b.*?\b((?:(?<=$branch_esc/)[\w\.\-]+)|(?:$trunk_esc))\b!i,
qr!\b(?:from|of)\W+((?:(?<=$branch_esc/)[\w\.\-]+)|(?:$trunk_esc))\b!i,
qr!\b(?:from|of)\W+(?:the )?([\w\.\-]+)[-\s]branch\b!i
);
}
if ($opt_M) {
unshift (@mergerx, qr/$opt_M/);
}
# Absolutize filename now, since we will have chdir'ed by the time we
# get around to opening it.
$opt_A = File::Spec->rel2abs($opt_A) if $opt_A;
our %users = ();
our $users_file = undef;
sub read_users($) {
$users_file = File::Spec->rel2abs(@_);
die "Cannot open $users_file\n" unless -f $users_file;
open(my $authors,$users_file);
while(<$authors>) {
chomp;
next unless /^(\S+?)\s*=\s*(.+?)\s*<(.+)>\s*$/;
(my $user,my $name,my $email) = ($1,$2,$3);
$users{$user} = [$name,$email];
}
close($authors);
}
select(STDERR); $|=1; select(STDOUT);
package SVNconn;
# Basic SVN connection.
# We're only interested in connecting and downloading, so ...
use File::Spec;
use File::Temp qw(tempfile);
use POSIX qw(strftime dup2);
use Fcntl qw(SEEK_SET);
sub new {
my($what,$repo) = @_;
$what=ref($what) if ref($what);
my $self = {};
$self->{'buffer'} = "";
bless($self,$what);
$repo =~ s#/+$##;
$self->{'fullrep'} = $repo;
$self->conn();
return $self;
}
sub conn {
my $self = shift;
my $repo = $self->{'fullrep'};
my $auth = SVN::Core::auth_open ([SVN::Client::get_simple_provider,
SVN::Client::get_ssl_server_trust_file_provider,
SVN::Client::get_username_provider]);
my $s = SVN::Ra->new(url => $repo, auth => $auth, pool => $root_pool);
die "SVN connection to $repo: $!\n" unless defined $s;
$self->{'svn'} = $s;
$self->{'repo'} = $repo;
$self->{'maxrev'} = $s->get_latest_revnum();
}
sub file {
my($self,$path,$rev) = @_;
my ($fh, $name) = tempfile('gitsvn.XXXXXX',
DIR => File::Spec->tmpdir(), UNLINK => 1);
print "... $rev $path ...\n" if $opt_v;
my (undef, $properties);
$path =~ s#^/*##;
my $subpool = SVN::Pool::new_default_sub;
eval { (undef, $properties)
= $self->{'svn'}->get_file($path,$rev,$fh); };
if($@) {
return undef if $@ =~ /Attempted to get checksum/;
die $@;
}
my $mode;
if (exists $properties->{'svn:executable'}) {
$mode = '100755';
} elsif (exists $properties->{'svn:special'}) {
my ($special_content, $filesize);
$filesize = tell $fh;
seek $fh, 0, SEEK_SET;
read $fh, $special_content, $filesize;
if ($special_content =~ s/^link //) {
$mode = '120000';
seek $fh, 0, SEEK_SET;
truncate $fh, 0;
print $fh $special_content;
} else {
die "unexpected svn:special file encountered";
}
} else {
$mode = '100644';
}
close ($fh);
return ($name, $mode);
}
sub ignore {
my($self,$path,$rev) = @_;
print "... $rev $path ...\n" if $opt_v;
$path =~ s#^/*##;
my $subpool = SVN::Pool::new_default_sub;
my (undef,undef,$properties)
= $self->{'svn'}->get_dir($path,$rev,undef);
if (exists $properties->{'svn:ignore'}) {
my ($fh, $name) = tempfile('gitsvn.XXXXXX',
DIR => File::Spec->tmpdir(),
UNLINK => 1);
print $fh $properties->{'svn:ignore'};
close($fh);
return $name;
} else {
return undef;
}
}
sub dir_list {
my($self,$path,$rev) = @_;
$path =~ s#^/*##;
my $subpool = SVN::Pool::new_default_sub;
my ($dirents,undef,$properties)
= $self->{'svn'}->get_dir($path,$rev,undef);
return $dirents;
}
package main;
use URI;
our $svn = $svn_url;
$svn .= "/$svn_dir" if defined $svn_dir;
my $svn2 = SVNconn->new($svn);
$svn = SVNconn->new($svn);
my $lwp_ua;
if($opt_d or $opt_D) {
$svn_url = URI->new($svn_url)->canonical;
if($opt_D) {
$svn_dir =~ s#/*$#/#;
} else {
$svn_dir = "";
}
if ($svn_url->scheme eq "http") {
use LWP::UserAgent;
$lwp_ua = LWP::UserAgent->new(keep_alive => 1, requests_redirectable => []);
} else {
print STDERR "Warning: not HTTP; turning off direct file access\n";
$opt_d=0;
}
}
sub pdate($) {
my($d) = @_;
$d =~ m#(\d\d\d\d)-(\d\d)-(\d\d)T(\d\d):(\d\d):(\d\d)#
or die "Unparseable date: $d\n";
my $y=$1; $y-=1900 if $y>1900;
return timegm($6||0,$5,$4,$3,$2-1,$y);
}
sub getwd() {
my $pwd = `pwd`;
chomp $pwd;
return $pwd;
}
sub get_headref($$) {
my $name = shift;
my $git_dir = shift;
my $sha;
if (open(C,"$git_dir/refs/heads/$name")) {
chomp($sha = <C>);
close(C);
length($sha) == 40
or die "Cannot get head id for $name ($sha): $!\n";
}
return $sha;
}
-d $git_tree
or mkdir($git_tree,0777)
or die "Could not create $git_tree: $!";
chdir($git_tree);
my $orig_branch = "";
my $forward_master = 0;
my %branches;
my $git_dir = $ENV{"GIT_DIR"} || ".git";
$git_dir = getwd()."/".$git_dir unless $git_dir =~ m#^/#;
$ENV{"GIT_DIR"} = $git_dir;
my $orig_git_index;
$orig_git_index = $ENV{GIT_INDEX_FILE} if exists $ENV{GIT_INDEX_FILE};
my ($git_ih, $git_index) = tempfile('gitXXXXXX', SUFFIX => '.idx',
DIR => File::Spec->tmpdir());
close ($git_ih);
$ENV{GIT_INDEX_FILE} = $git_index;
my $maxnum = 0;
my $last_rev = "";
my $last_branch;
my $current_rev = $opt_s || 1;
unless(-d $git_dir) {
system("git init");
die "Cannot init the GIT db at $git_tree: $?\n" if $?;
system("git read-tree --empty");
die "Cannot init an empty tree: $?\n" if $?;
$last_branch = $opt_o;
$orig_branch = "";
} else {
-f "$git_dir/refs/heads/$opt_o"
or die "Branch '$opt_o' does not exist.\n".
"Either use the correct '-o branch' option,\n".
"or import to a new repository.\n";
-f "$git_dir/svn2git"
or die "'$git_dir/svn2git' does not exist.\n".
"You need that file for incremental imports.\n";
open(F, "git symbolic-ref HEAD |") or
die "Cannot run git-symbolic-ref: $!\n";
chomp ($last_branch = <F>);
$last_branch = basename($last_branch);
close(F);
unless($last_branch) {
warn "Cannot read the last branch name: $! -- assuming 'master'\n";
$last_branch = "master";
}
$orig_branch = $last_branch;
$last_rev = get_headref($orig_branch, $git_dir);
if (-f "$git_dir/SVN2GIT_HEAD") {
die <<EOM;
SVN2GIT_HEAD exists.
Make sure your working directory corresponds to HEAD and remove SVN2GIT_HEAD.
You may need to run
git-read-tree -m -u SVN2GIT_HEAD HEAD
EOM
}
system('cp', "$git_dir/HEAD", "$git_dir/SVN2GIT_HEAD");
$forward_master =
$opt_o ne 'master' && -f "$git_dir/refs/heads/master" &&
system('cmp', '-s', "$git_dir/refs/heads/master",
"$git_dir/refs/heads/$opt_o") == 0;
# populate index
system('git', 'read-tree', $last_rev);
die "read-tree failed: $?\n" if $?;
# Get the last import timestamps
open my $B,"<", "$git_dir/svn2git";
while(<$B>) {
chomp;
my($num,$branch,$ref) = split;
$branches{$branch}{$num} = $ref;
$branches{$branch}{"LAST"} = $ref;
$current_rev = $num+1 if $current_rev <= $num;
}
close($B);
}
-d $git_dir
or die "Could not create git subdir ($git_dir).\n";
my $default_authors = "$git_dir/svn-authors";
if ($opt_A) {
read_users($opt_A);
copy($opt_A,$default_authors) or die "Copy failed: $!";
} else {
read_users($default_authors) if -f $default_authors;
}
open BRANCHES,">>", "$git_dir/svn2git";
sub node_kind($$) {
my ($svnpath, $revision) = @_;
$svnpath =~ s#^/*##;
my $subpool = SVN::Pool::new_default_sub;
my $kind = $svn->{'svn'}->check_path($svnpath,$revision);
return $kind;
}
sub get_file($$$) {
my($svnpath,$rev,$path) = @_;
# now get it
my ($name,$mode);
if($opt_d) {
my($req,$res);
# /svn/!svn/bc/2/django/trunk/django-docs/build.py
my $url=$svn_url->clone();
$url->path($url->path."/!svn/bc/$rev/$svn_dir$svnpath");
print "... $path...\n" if $opt_v;
$req = HTTP::Request->new(GET => $url);
$res = $lwp_ua->request($req);
if ($res->is_success) {
my $fh;
($fh, $name) = tempfile('gitsvn.XXXXXX',
DIR => File::Spec->tmpdir(), UNLINK => 1);
print $fh $res->content;
close($fh) or die "Could not write $name: $!\n";
} else {
return undef if $res->code == 301; # directory?
die $res->status_line." at $url\n";
}
$mode = '0644'; # can't obtain mode via direct http request?
} else {
($name,$mode) = $svn->file("$svnpath",$rev);
return undef unless defined $name;
}
my $pid = open(my $F, '-|');
die $! unless defined $pid;
if (!$pid) {
exec("git", "hash-object", "-w", $name)
or die "Cannot create object: $!\n";
}
my $sha = <$F>;
chomp $sha;
close $F;
unlink $name;
return [$mode, $sha, $path];
}
sub get_ignore($$$$$) {
my($new,$old,$rev,$path,$svnpath) = @_;
return unless $opt_I;
my $name = $svn->ignore("$svnpath",$rev);
if ($path eq '/') {
$path = $opt_I;
} else {
$path = File::Spec->catfile($path,$opt_I);
}
if (defined $name) {
my $pid = open(my $F, '-|');
die $! unless defined $pid;
if (!$pid) {
exec("git", "hash-object", "-w", $name)
or die "Cannot create object: $!\n";
}
my $sha = <$F>;
chomp $sha;
close $F;
unlink $name;
push(@$new,['0644',$sha,$path]);
} elsif (defined $old) {
push(@$old,$path);
}
}
sub project_path($$)
{
my ($path, $project) = @_;
$path = "/".$path unless ($path =~ m#^\/#) ;
return $1 if ($path =~ m#^$project\/(.*)$#);
$path =~ s#\.#\\\.#g;
$path =~ s#\+#\\\+#g;
return "/" if ($project =~ m#^$path.*$#);
return undef;
}
sub split_path($$) {
my($rev,$path) = @_;
my $branch;
if($path =~ s#^/\Q$tag_name\E/([^/]+)/?##) {
$branch = "/$1";
} elsif($path =~ s#^/\Q$trunk_name\E/?##) {
$branch = "/";
} elsif($path =~ s#^/\Q$branch_name\E/([^/]+)/?##) {
$branch = $1;
} else {
my %no_error = (
"/" => 1,
"/$tag_name" => 1,
"/$branch_name" => 1
);
print STDERR "$rev: Unrecognized path: $path\n" unless (defined $no_error{$path});
return ()
}
if ($path eq "") {
$path = "/";
} elsif ($project_name) {
$path = project_path($path, $project_name);
}
return ($branch,$path);
}
sub branch_rev($$) {
my ($srcbranch,$uptorev) = @_;
my $bbranches = $branches{$srcbranch};
my @revs = reverse sort { ($a eq 'LAST' ? 0 : $a) <=> ($b eq 'LAST' ? 0 : $b) } keys %$bbranches;
my $therev;
foreach my $arev(@revs) {
next if ($arev eq 'LAST');
if ($arev <= $uptorev) {
$therev = $arev;
last;
}
}
return $therev;
}
sub expand_svndir($$$);
sub expand_svndir($$$)
{
my ($svnpath, $rev, $path) = @_;
my @list;
get_ignore(\@list, undef, $rev, $path, $svnpath);
my $dirents = $svn->dir_list($svnpath, $rev);
foreach my $p(keys %$dirents) {
my $kind = node_kind($svnpath.'/'.$p, $rev);
if ($kind eq $SVN::Node::file) {
my $f = get_file($svnpath.'/'.$p, $rev, $path.'/'.$p);
push(@list, $f) if $f;
} elsif ($kind eq $SVN::Node::dir) {
push(@list,
expand_svndir($svnpath.'/'.$p, $rev, $path.'/'.$p));
}
}
return @list;
}
sub copy_path($$$$$$$$) {
# Somebody copied a whole subdirectory.
# We need to find the index entries from the old version which the
# SVN log entry points to, and add them to the new place.
my($newrev,$newbranch,$path,$oldpath,$rev,$node_kind,$new,$parents) = @_;
my($srcbranch,$srcpath) = split_path($rev,$oldpath);
unless(defined $srcbranch && defined $srcpath) {
print "Path not found when copying from $oldpath @ $rev.\n".
"Will try to copy from original SVN location...\n"
if $opt_v;
push (@$new, expand_svndir($oldpath, $rev, $path));
return;
}
my $therev = branch_rev($srcbranch, $rev);
my $gitrev = $branches{$srcbranch}{$therev};
unless($gitrev) {
print STDERR "$newrev:$newbranch: could not find $oldpath \@ $rev\n";
return;
}
if ($srcbranch ne $newbranch) {
push(@$parents, $branches{$srcbranch}{'LAST'});
}
print "$newrev:$newbranch:$path: copying from $srcbranch:$srcpath @ $rev\n" if $opt_v;
if ($node_kind eq $SVN::Node::dir) {
$srcpath =~ s#/*$#/#;
}
my $pid = open my $f,'-|';
die $! unless defined $pid;
if (!$pid) {
exec("git","ls-tree","-r","-z",$gitrev,$srcpath)
or die $!;
}
local $/ = "\0";
while(<$f>) {
chomp;
my($m,$p) = split(/\t/,$_,2);
my($mode,$type,$sha1) = split(/ /,$m);
next if $type ne "blob";
if ($node_kind eq $SVN::Node::dir) {
$p = $path . substr($p,length($srcpath)-1);
} else {
$p = $path;
}
push(@$new,[$mode,$sha1,$p]);
}
close($f) or
print STDERR "$newrev:$newbranch: could not list files in $oldpath \@ $rev\n";
}
sub commit {
my($branch, $changed_paths, $revision, $author, $date, $message) = @_;
my($committer_name,$committer_email,$dest);
my($author_name,$author_email);
my(@old,@new,@parents);
if (not defined $author or $author eq "") {
$committer_name = $committer_email = "unknown";
} elsif (defined $users_file) {
die "User $author is not listed in $users_file\n"
unless exists $users{$author};
($committer_name,$committer_email) = @{$users{$author}};
} elsif ($author =~ /^(.*?)\s+<(.*)>$/) {
($committer_name, $committer_email) = ($1, $2);
} else {
$author =~ s/^<(.*)>$/$1/;
$committer_name = $committer_email = $author;
}
if ($opt_F && $message =~ /From:\s+(.*?)\s+<(.*)>\s*\n/) {
($author_name, $author_email) = ($1, $2);
print "Author from From: $1 <$2>\n" if ($opt_v);;
} elsif ($opt_S && $message =~ /Signed-off-by:\s+(.*?)\s+<(.*)>\s*\n/) {
($author_name, $author_email) = ($1, $2);
print "Author from Signed-off-by: $1 <$2>\n" if ($opt_v);;
} else {
$author_name = $committer_name;
$author_email = $committer_email;
}
$date = pdate($date);
my $tag;
my $parent;
if($branch eq "/") { # trunk
$parent = $opt_o;
} elsif($branch =~ m#^/(.+)#) { # tag
$tag = 1;
$parent = $1;
} else { # "normal" branch
# nothing to do
$parent = $branch;
}
$dest = $parent;
my $prev = $changed_paths->{"/"};
if($prev and $prev->[0] eq "A") {
delete $changed_paths->{"/"};
my $oldpath = $prev->[1];
my $rev;
if(defined $oldpath) {
my $p;
($parent,$p) = split_path($revision,$oldpath);
if(defined $parent) {
if($parent eq "/") {
$parent = $opt_o;
} else {
$parent =~ s#^/##; # if it's a tag
}
}
} else {
$parent = undef;
}
}
my $rev;
if($revision > $opt_s and defined $parent) {
open(H,'-|',"git","rev-parse","--verify",$parent);
$rev = <H>;
close(H) or do {
print STDERR "$revision: cannot find commit '$parent'!\n";
return;
};
chop $rev;
if(length($rev) != 40) {
print STDERR "$revision: cannot find commit '$parent'!\n";
return;
}
$rev = $branches{($parent eq $opt_o) ? "/" : $parent}{"LAST"};
if($revision != $opt_s and not $rev) {
print STDERR "$revision: do not know ancestor for '$parent'!\n";
return;
}
} else {
$rev = undef;
}
# if($prev and $prev->[0] eq "A") {
# if(not $tag) {
# unless(open(H,"> $git_dir/refs/heads/$branch")) {
# print STDERR "$revision: Could not create branch $branch: $!\n";
# $state=11;
# next;
# }
# print H "$rev\n"
# or die "Could not write branch $branch: $!";
# close(H)
# or die "Could not write branch $branch: $!";
# }
# }
if(not defined $rev) {
unlink($git_index);
} elsif ($rev ne $last_rev) {
print "Switching from $last_rev to $rev ($branch)\n" if $opt_v;
system("git", "read-tree", $rev);
die "read-tree failed for $rev: $?\n" if $?;
$last_rev = $rev;
}
push (@parents, $rev) if defined $rev;
my $cid;
if($tag and not %$changed_paths) {
$cid = $rev;
} else {
my @paths = sort keys %$changed_paths;
foreach my $path(@paths) {
my $action = $changed_paths->{$path};
if ($action->[0] eq "R") {
# refer to a file/tree in an earlier commit
push(@old,$path); # remove any old stuff
}
if(($action->[0] eq "A") || ($action->[0] eq "R")) {
my $node_kind = node_kind($action->[3], $revision);
if ($node_kind eq $SVN::Node::file) {
my $f = get_file($action->[3],
$revision, $path);
if ($f) {
push(@new,$f) if $f;
} else {
my $opath = $action->[3];
print STDERR "$revision: $branch: could not fetch '$opath'\n";
}
} elsif ($node_kind eq $SVN::Node::dir) {
if($action->[1]) {
copy_path($revision, $branch,
$path, $action->[1],
$action->[2], $node_kind,
\@new, \@parents);
} else {
get_ignore(\@new, \@old, $revision,
$path, $action->[3]);
}
}
} elsif ($action->[0] eq "D") {
push(@old,$path);
} elsif ($action->[0] eq "M") {
my $node_kind = node_kind($action->[3], $revision);
if ($node_kind eq $SVN::Node::file) {
my $f = get_file($action->[3],
$revision, $path);
push(@new,$f) if $f;
} elsif ($node_kind eq $SVN::Node::dir) {
get_ignore(\@new, \@old, $revision,
$path, $action->[3]);
}
} else {
die "$revision: unknown action '".$action->[0]."' for $path\n";
}
}
while(@old) {
my @o1;
if(@old > 55) {
@o1 = splice(@old,0,50);
} else {
@o1 = @old;
@old = ();
}
my $pid = open my $F, "-|";
die "$!" unless defined $pid;
if (!$pid) {
exec("git", "ls-files", "-z", @o1) or die $!;
}
@o1 = ();
local $/ = "\0";
while(<$F>) {
chomp;
push(@o1,$_);
}
close($F);
while(@o1) {
my @o2;
if(@o1 > 55) {
@o2 = splice(@o1,0,50);
} else {
@o2 = @o1;
@o1 = ();
}
system("git","update-index","--force-remove","--",@o2);
die "Cannot remove files: $?\n" if $?;
}
}
while(@new) {
my @n2;
if(@new > 12) {
@n2 = splice(@new,0,10);
} else {
@n2 = @new;
@new = ();
}
system("git","update-index","--add",
(map { ('--cacheinfo', @$_) } @n2));
die "Cannot add files: $?\n" if $?;
}
my $pid = open(C,"-|");
die "Cannot fork: $!" unless defined $pid;
unless($pid) {
exec("git","write-tree");
die "Cannot exec git-write-tree: $!\n";
}
chomp(my $tree = <C>);
length($tree) == 40
or die "Cannot get tree id ($tree): $!\n";
close(C)
or die "Error running git-write-tree: $?\n";
print "Tree ID $tree\n" if $opt_v;
my $pr = IO::Pipe->new() or die "Cannot open pipe: $!\n";
my $pw = IO::Pipe->new() or die "Cannot open pipe: $!\n";
$pid = fork();
die "Fork: $!\n" unless defined $pid;
unless($pid) {
$pr->writer();
$pw->reader();
open(OUT,">&STDOUT");
dup2($pw->fileno(),0);
dup2($pr->fileno(),1);
$pr->close();
$pw->close();
my @par = ();
# loose detection of merges
# based on the commit msg
foreach my $rx (@mergerx) {
if ($message =~ $rx) {
my $mparent = $1;
if ($mparent eq 'HEAD') { $mparent = $opt_o };
if ( -e "$git_dir/refs/heads/$mparent") {
$mparent = get_headref($mparent, $git_dir);
push (@parents, $mparent);
print OUT "Merge parent branch: $mparent\n" if $opt_v;
}
}
}
my %seen_parents = ();
my @unique_parents = grep { ! $seen_parents{$_} ++ } @parents;
foreach my $bparent (@unique_parents) {
push @par, '-p', $bparent;
print OUT "Merge parent branch: $bparent\n" if $opt_v;
}
exec("env",
"GIT_AUTHOR_NAME=$author_name",
"GIT_AUTHOR_EMAIL=$author_email",
"GIT_AUTHOR_DATE=".strftime("+0000 %Y-%m-%d %H:%M:%S",gmtime($date)),
"GIT_COMMITTER_NAME=$committer_name",
"GIT_COMMITTER_EMAIL=$committer_email",
"GIT_COMMITTER_DATE=".strftime("+0000 %Y-%m-%d %H:%M:%S",gmtime($date)),
"git", "commit-tree", $tree,@par);
die "Cannot exec git-commit-tree: $!\n";
}
$pw->writer();
$pr->reader();
$message =~ s/[\s\n]+\z//;
$message = "r$revision: $message" if $opt_r;
print $pw "$message\n"
or die "Error writing to git-commit-tree: $!\n";
$pw->close();
print "Committed change $revision:$branch ".strftime("%Y-%m-%d %H:%M:%S",gmtime($date)).")\n" if $opt_v;
chomp($cid = <$pr>);
length($cid) == 40
or die "Cannot get commit id ($cid): $!\n";
print "Commit ID $cid\n" if $opt_v;
$pr->close();
waitpid($pid,0);
die "Error running git-commit-tree: $?\n" if $?;
}
if (not defined $cid) {
$cid = $branches{"/"}{"LAST"};
}
if(not defined $dest) {
print "... no known parent\n" if $opt_v;
} elsif(not $tag) {
print "Writing to refs/heads/$dest\n" if $opt_v;
open(C,">$git_dir/refs/heads/$dest") and
print C ("$cid\n") and
close(C)
or die "Cannot write branch $dest for update: $!\n";
}
if ($tag) {
$last_rev = "-" if %$changed_paths;
# the tag was 'complex', i.e. did not refer to a "real" revision
$dest =~ tr/_/\./ if $opt_u;
system('git', 'tag', '-f', $dest, $cid) == 0
or die "Cannot create tag $dest: $!\n";
print "Created tag '$dest' on '$branch'\n" if $opt_v;
}
$branches{$branch}{"LAST"} = $cid;
$branches{$branch}{$revision} = $cid;
$last_rev = $cid;
print BRANCHES "$revision $branch $cid\n";
print "DONE: $revision $dest $cid\n" if $opt_v;
}
sub commit_all {
# Recursive use of the SVN connection does not work
local $svn = $svn2;
my ($changed_paths, $revision, $author, $date, $message) = @_;
my %p;
while(my($path,$action) = each %$changed_paths) {
$p{$path} = [ $action->action,$action->copyfrom_path, $action->copyfrom_rev, $path ];
}
$changed_paths = \%p;
my %done;
my @col;
my $pref;
my $branch;
while(my($path,$action) = each %$changed_paths) {
($branch,$path) = split_path($revision,$path);
next if not defined $branch;
next if not defined $path;
$done{$branch}{$path} = $action;
}
while(($branch,$changed_paths) = each %done) {
commit($branch, $changed_paths, $revision, $author, $date, $message);
}
}
$opt_l = $svn->{'maxrev'} if not defined $opt_l or $opt_l > $svn->{'maxrev'};
if ($opt_l < $current_rev) {
print "Up to date: no new revisions to fetch!\n" if $opt_v;
unlink("$git_dir/SVN2GIT_HEAD");
exit;
}
print "Processing from $current_rev to $opt_l ...\n" if $opt_v;
my $from_rev;
my $to_rev = $current_rev - 1;
my $subpool = SVN::Pool::new_default_sub;
while ($to_rev < $opt_l) {
$subpool->clear;
$from_rev = $to_rev + 1;
$to_rev = $from_rev + $repack_after;
$to_rev = $opt_l if $opt_l < $to_rev;
print "Fetching from $from_rev to $to_rev ...\n" if $opt_v;
$svn->{'svn'}->get_log("",$from_rev,$to_rev,0,1,1,\&commit_all);
my $pid = fork();
die "Fork: $!\n" unless defined $pid;
unless($pid) {
exec("git", "repack", "-d")
or die "Cannot repack: $!\n";
}
waitpid($pid, 0);
}
unlink($git_index);
if (defined $orig_git_index) {
$ENV{GIT_INDEX_FILE} = $orig_git_index;
} else {
delete $ENV{GIT_INDEX_FILE};
}
# Now switch back to the branch we were in before all of this happened
if($orig_branch) {
print "DONE\n" if $opt_v and (not defined $opt_l or $opt_l > 0);
system("cp","$git_dir/refs/heads/$opt_o","$git_dir/refs/heads/master")
if $forward_master;
unless ($opt_i) {
system('git', 'read-tree', '-m', '-u', 'SVN2GIT_HEAD', 'HEAD');
die "read-tree failed: $?\n" if $?;
}
} else {
$orig_branch = "master";
print "DONE; creating $orig_branch branch\n" if $opt_v and (not defined $opt_l or $opt_l > 0);
system("cp","$git_dir/refs/heads/$opt_o","$git_dir/refs/heads/master")
unless -f "$git_dir/refs/heads/master";
system('git', 'update-ref', 'HEAD', "$orig_branch");
unless ($opt_i) {
system('git checkout');
die "checkout failed: $?\n" if $?;
}
}
unlink("$git_dir/SVN2GIT_HEAD");
close(BRANCHES);
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