git-cvsimport-script: leave working directory alone.

diff --git a/git-cvsimport-script b/git-cvsimport-script
index f05fe10..cc68460 100755 (executable)
--- a/git-cvsimport-script
+++ b/git-cvsimport-script
@@ -80,6 +80,8 @@ package CVSconn;
 # Basic CVS dialog.
 # We're only interested in connecting and downloading, so ...
 
+use File::Spec;
+use File::Temp qw(tempfile);
 use POSIX qw(strftime dup2);
 
 sub new {
@@ -231,11 +233,11 @@ sub _file {
 sub _line {
        # Read a line from the server.
        # ... except that 'line' may be an entire file. ;-)
-       my($self) = @_;
+       my($self, $fh) = @_;
        die "Not in lines" unless defined $self->{'lines'};
 
        my $line;
-       my $res="";
+       my $res=0;
        while(defined($line = $self->readline())) {
                # M U gnupg-cvs-rep/AUTHORS
                # Updated gnupg-cvs-rep/
@@ -255,16 +257,18 @@ sub _line {
                        chomp $cnt;
                        die "Duh: Filesize $cnt" if $cnt !~ /^\d+$/;
                        $line="";
-                       $res="";
+                       $res=0;
                        while($cnt) {
                                my $buf;
                                my $num = $self->{'socketi'}->read($buf,$cnt);
                                die "Server: Filesize $cnt: $num: $!\n" if not defined $num or $num<=0;
-                               $res .= $buf;
+                               print $fh $buf;
+                               $res += $num;
                                $cnt -= $num;
                        }
                } elsif($line =~ s/^ //) {
-                       $res .= $line;
+                       print $fh $line;
+                       $res += length($line);
                } elsif($line =~ /^M\b/) {
                        # output, do nothing
                } elsif($line =~ /^Mbinary\b/) {
@@ -277,7 +281,8 @@ sub _line {
                                my $buf;
                                my $num = $self->{'socketi'}->read($buf,$cnt);
                                die "S: Mbinary $cnt: $num: $!\n" if not defined $num or $num<=0;
-                               $res .= $buf;
+                               print $fh $buf;
+                               $res += $num;
                                $cnt -= $num;
                        }
                } else {
@@ -297,18 +302,21 @@ sub file {
        my($self,$fn,$rev) = @_;
        my $res;
 
-       if ($self->_file($fn,$rev)) {
-               $res = $self->_line();
-               return $res if defined $res;
+       my ($fh, $name) = tempfile('gitcvs.XXXXXX', 
+                   DIR => File::Spec->tmpdir(), UNLINK => 1);
+
+       $self->_file($fn,$rev) and $res = $self->_line($fh);
+
+       if (!defined $res) {
+           # retry
+           $self->conn();
+           $self->_file($fn,$rev)
+                   or die "No file command send\n";
+           $res = $self->_line($fh);
+           die "No input: $fn $rev\n" unless defined $res;
        }
 
-       # retry
-       $self->conn();
-       $self->_file($fn,$rev)
-               or die "No file command send\n";
-       $res = $self->_line();
-       die "No input: $fn $rev\n" unless defined $res;
-       return $res;
+       return ($name, $res);
 }
 
 
@@ -457,13 +465,14 @@ my $commit = sub {
        }
        while(@new) {
                my @n2;
-               if(@new > 55) {
-                       @n2 = splice(@new,0,50);
+               if(@new > 12) {
+                       @n2 = splice(@new,0,10);
                } else {
                        @n2 = @new;
                        @new = ();
                }
-               system("git-update-cache","--add","--",@n2);
+               system("git-update-cache","--add",
+                       (map { ('--cacheinfo', @$_) } @n2));
                die "Cannot add files: $?\n" if $?;
        }
 
@@ -631,7 +640,7 @@ while(<CVS>) {
                }
                if(($ancestor || $branch) ne $last_branch) {
                        print "Switching from $last_branch to $branch\n" if $opt_v;
-                       system("git-read-tree","-m","-u","$last_branch","$branch");
+                       system("git-read-tree","-m","$last_branch","$branch");
                        die "read-tree failed: $?\n" if $?;
                }
                if($branch ne $last_branch) {
@@ -648,17 +657,16 @@ while(<CVS>) {
                my $fn = $1;
                my $rev = $3;
                $fn =~ s#^/+##;
-               my $data = $cvs->file($fn,$rev);
-               print "".($init ? "New" : "Update")." $fn: ".length($data)." bytes.\n" if $opt_v;
-               mkpath(dirname($fn),$opt_v);
-               open(F,"> ./$fn")
-                       or die "Cannot create '$fn': $!\n";
-               print F $data
-                       or die "Cannot write to '$fn': $!\n";
-               close(F)
-                       or die "Cannot write to '$fn': $!\n";
-               chmod(pmode($cvs->{'mode'}), $fn);
-               push(@new,$fn); # may be resurrected!
+               my ($tmpname, $size) = $cvs->file($fn,$rev);
+               print "".($init ? "New" : "Update")." $fn: $size bytes.\n" if $opt_v;
+               open my $F, '-|', "git-write-blob $tmpname"
+                       or die "Cannot create object: $!\n";
+               my $sha = <$F>;
+               chomp $sha;
+               close $F;
+               unlink($tmpname);
+               my $mode = pmode($cvs->{'mode'});
+               push(@new,[$mode, $sha, $fn]); # may be resurrected!
        } elsif($state == 9 and /^\s+(\S+):\d(?:\.\d+)+->(\d(?:\.\d+)+)\(DEAD\)\s*$/) {
                my $fn = $1;
                $fn =~ s#^/+##;
@@ -688,8 +696,15 @@ if($orig_branch) {
                unless -f "$git_dir/refs/heads/master";
 }
 
-system("git-read-tree","-m","-u","$last_branch","$orig_branch");
-die "read-tree failed: $?\n" if $?;
+if ($orig_branch) {
+       system("git-read-tree",$last_branch);
+       die "read-tree failed: $?\n" if $?;
+} else {
+       system('git-read-tree', $orig_branch);
+       die "read-tree failed: $?\n" if $?;
+       system('git-checkout-cache', '-a');
+       die "checkout-cache failed: $?\n" if $?;
+}
 
 unlink("$git_dir/HEAD");
 symlink("refs/heads/$orig_branch","$git_dir/HEAD");