use SVN::Core;
use SVN::Ra;
-die "Need CVN:Core 1.2.1 or better" if $SVN::Core::VERSION lt "1.2.1";
+die "Need SVN:Core 1.2.1 or better" if $SVN::Core::VERSION lt "1.2.1";
$SIG{'PIPE'}="IGNORE";
$ENV{'TZ'}="UTC";
sub usage() {
print STDERR <<END;
-Usage: ${\basename $0} # fetch/update GIT from CVS
+Usage: ${\basename $0} # fetch/update GIT from SVN
[-o branch-for-HEAD] [-h] [-v] [-l max_num_changes]
[-C GIT_repository] [-t tagname] [-T trunkname] [-b branchname]
[-d|-D] [-i] [-u] [-s start_chg] [-m] [-M regex] [SVN_URL]
$opt_o ||= "origin";
$opt_s ||= 1;
-$opt_l = 100 unless defined $opt_l;
my $git_tree = $opt_C;
$git_tree ||= ".";
-f "$git_dir/svn2git"
or die "'$git_dir/svn2git' does not exist.\n".
"You need that file for incremental imports.\n";
- $last_branch = basename(readlink("$git_dir/HEAD"));
+ 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";
$last_branch = "master";
open BRANCHES,">>", "$git_dir/svn2git";
-sub get_file($$$) {
- my($rev,$branch,$path) = @_;
+sub node_kind($$$) {
+ my ($branch, $path, $revision) = @_;
+ my $pool=SVN::Pool->new;
+ my $kind = $svn->{'svn'}->check_path(revert_split_path($branch,$path),$revision,$pool);
+ $pool->clear;
+ return $kind;
+}
+
+sub revert_split_path($$) {
+ my($branch,$path) = @_;
- # revert split_path(), below
my $svnpath;
$path = "" if $path eq "/"; # this should not happen, but ...
if($branch eq "/") {
$svnpath = "$branch_name/$branch/$path";
}
+ $svnpath =~ s#/+$##;
+ return $svnpath;
+}
+
+sub get_file($$$) {
+ my($rev,$branch,$path) = @_;
+
+ my $svnpath = revert_split_path($branch,$path);
+
# now get it
my $name;
if($opt_d) {
} elsif($path =~ s#^/\Q$branch_name\E/([^/]+)/?##) {
$branch = $1;
} else {
- print STDERR "$rev: Unrecognized path: $path\n";
+ my %no_error = (
+ "/" => 1,
+ "/$tag_name" => 1,
+ "/$branch_name" => 1
+ );
+ print STDERR "$rev: Unrecognized path: $path\n" unless (defined $no_error{$path});
return ()
}
$path = "/" if $path eq "";
return ($branch,$path);
}
-sub copy_subdir($$$$$$) {
+sub branch_rev($$) {
+
+ 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 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,$rev,$new) = @_;
- my($branch,$srcpath) = split_path($rev,$oldpath);
+ my($newrev,$newbranch,$path,$oldpath,$rev,$node_kind,$new,$parents) = @_;
- my $gitrev = $branches{$branch}{$rev};
+ my($srcbranch,$srcpath) = split_path($rev,$oldpath);
+ unless(defined $srcbranch) {
+ print "Path not found when copying from $oldpath @ $rev\n";
+ return;
+ }
+ my $therev = branch_rev($srcbranch, $rev);
+ my $gitrev = $branches{$srcbranch}{$therev};
unless($gitrev) {
print STDERR "$newrev:$newbranch: could not find $oldpath \@ $rev\n";
return;
}
- print "$newrev:$newbranch:$path: copying from $branch:$srcpath @ $rev\n" if $opt_v;
- $srcpath =~ s#/*$#/#;
+ 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) {
+ $srcpath =~ s#/*$#/#;
+ }
+
open my $f,"-|","git-ls-tree","-r","-z",$gitrev,$srcpath;
local $/ = "\0";
while(<$f>) {
my($m,$p) = split(/\t/,$_,2);
my($mode,$type,$sha1) = split(/ /,$m);
next if $type ne "blob";
- $p = substr($p,length($srcpath)-1);
- print "... found $path$p ...\n" if $opt_v;
- push(@$new,[$mode,$sha1,$path.$p]);
+ 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, $message) = @_;
my($author_name,$author_email,$dest);
- my(@old,@new);
+ my(@old,@new,@parents);
if (not defined $author) {
$author_name = $author_email = "unknown";
$last_rev = $rev;
}
+ push (@parents, $rev) if defined $rev;
+
my $cid;
if($tag and not %$changed_paths) {
$cid = $rev;
foreach my $path(@paths) {
my $action = $changed_paths->{$path};
- if ($action->[0] eq "A") {
- my $f = get_file($revision,$branch,$path);
- if($f) {
- push(@new,$f) if $f;
- } elsif($action->[1]) {
- copy_subdir($revision,$branch,$path,$action->[1],$action->[2],\@new);
- } else {
- my $opath = $action->[3];
- print STDERR "$revision: $branch: could not fetch '$opath'\n";
+ 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 $node_kind = node_kind($branch,$path,$revision);
+ if($action->[1]) {
+ copy_path($revision,$branch,$path,$action->[1],$action->[2],$node_kind,\@new,\@parents);
+ } elsif ($node_kind eq $SVN::Node::file) {
+ my $f = get_file($revision,$branch,$path);
+ if ($f) {
+ push(@new,$f) if $f;
+ } else {
+ my $opath = $action->[3];
+ print STDERR "$revision: $branch: could not fetch '$opath'\n";
+ }
}
} elsif ($action->[0] eq "D") {
push(@old,$path);
} elsif ($action->[0] eq "M") {
- my $f = get_file($revision,$branch,$path);
- push(@new,$f) if $f;
- } elsif ($action->[0] eq "R") {
- # refer to a file/tree in an earlier commit
- push(@old,$path); # remove any old stuff
-
- # ... and add any new stuff
- my($b,$srcpath) = split_path($revision,$action->[1]);
- $srcpath =~ s#/*$#/#;
- open my $F,"-|","git-ls-tree","-r","-z", $branches{$b}{$action->[2]}, $srcpath;
- local $/ = "\0";
- while(<$F>) {
- chomp;
- my($m,$p) = split(/\t/,$_,2);
- my($mode,$type,$sha1) = split(/ /,$m);
- next if $type ne "blob";
- $p = substr($p,length($srcpath)-1);
- push(@new,[$mode,$sha1,$path.$p]);
+ my $node_kind = node_kind($branch,$path,$revision);
+ if ($node_kind eq $SVN::Node::file) {
+ my $f = get_file($revision,$branch,$path);
+ push(@new,$f) if $f;
}
- close($F);
} else {
die "$revision: unknown action '".$action->[0]."' for $path\n";
}
$pw->close();
my @par = ();
- @par = ("-p",$rev) if defined $rev;
# loose detection of merges
# based on the commit msg
if ($mparent eq 'HEAD') { $mparent = $opt_o };
if ( -e "$git_dir/refs/heads/$mparent") {
$mparent = get_headref($mparent, $git_dir);
- push @par, '-p', $mparent;
+ 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",
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) {
# the tag was 'complex', i.e. did not refer to a "real" revision
$dest =~ tr/_/\./ if $opt_u;
+ $branch = $dest;
my $pid = open2($in, $out, 'git-mktag');
print $out ("object $cid\n".
}
while(++$current_rev <= $svn->{'maxrev'}) {
+ if (defined $opt_l) {
+ $opt_l--;
+ if ($opt_l < 0) {
+ last;
+ }
+ }
my $pool=SVN::Pool->new;
$svn->{'svn'}->get_log("/",$current_rev,$current_rev,1,1,1,\&_commit_all,$pool);
$pool->clear;
commit_all();
- if($opt_l and not --$opt_l) {
- print STDERR "Stopping, because there is a memory leak (in the SVN library).\n";
- print STDERR "Please repeat this command; it will continue safely\n";
- last;
- }
}
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 "$git_dir/refs/heads/master";
- unlink("$git_dir/HEAD");
- symlink("refs/heads/$orig_branch","$git_dir/HEAD");
+ system('git-update-ref', 'HEAD', "$orig_branch");
unless ($opt_i) {
system('git checkout');
die "checkout failed: $?\n" if $?;