sha1_name: warning ambiguous refs.

diff --git a/git-cvsimport.perl b/git-cvsimport.perl
index fc207fc47e2860f9d8b1ed4154596b6e8d897a11..02d1928ada5001d938a549bd9a33acd4b9c0f074 100755 (executable)
--- a/git-cvsimport.perl
+++ b/git-cvsimport.perl
@@ -29,7 +29,7 @@
 $SIG{'PIPE'}="IGNORE";
 $ENV{'TZ'}="UTC";
 
-our($opt_h,$opt_o,$opt_v,$opt_k,$opt_u,$opt_d,$opt_p,$opt_C,$opt_z,$opt_i,$opt_P, $opt_s,$opt_m,$opt_M,$opt_A);
+our($opt_h,$opt_o,$opt_v,$opt_k,$opt_u,$opt_d,$opt_p,$opt_C,$opt_z,$opt_i,$opt_P, $opt_s,$opt_m,$opt_M,$opt_A,$opt_S);
 my (%conv_author_name, %conv_author_email);
 
 sub usage() {
@@ -37,7 +37,7 @@ ()
 Usage: ${\basename $0}     # fetch/update GIT from CVS
        [-o branch-for-HEAD] [-h] [-v] [-d CVSROOT] [-A author-conv-file]
        [-p opts-for-cvsps] [-C GIT_repository] [-z fuzz] [-i] [-k] [-u]
-       [-s subst] [-m] [-M regex] [CVS_module]
+       [-s subst] [-m] [-M regex] [-S regex] [CVS_module]
 END
        exit(1);
 }
@@ -85,7 +85,7 @@ ($)
        close ($f);
 }
 
-getopts("hivmkuo:d:p:C:z:s:M:P:A:") or usage();
+getopts("hivmkuo:d:p:C:z:s:M:P:A:S:") or usage();
 usage if $opt_h;
 
 @ARGV <= 1 or usage();
@@ -361,6 +361,7 @@ sub _line {
                        }
                }
        }
+       return undef;
 }
 sub file {
        my($self,$fn,$rev) = @_;
@@ -372,19 +373,15 @@ sub file {
        $self->_file($fn,$rev) and $res = $self->_line($fh);
 
        if (!defined $res) {
-           # retry
+           print STDERR "Server has gone away while fetching $fn $rev, retrying...\n";
+           truncate $fh, 0;
            $self->conn();
-           $self->_file($fn,$rev)
-                   or die "No file command send\n";
+           $self->_file($fn,$rev) or die "No file command send";
            $res = $self->_line($fh);
-           die "No input: $fn $rev\n" unless defined $res;
+           die "Retry failed" unless defined $res;
        }
        close ($fh);
 
-       if ($res eq '') {
-           die "Looks like the server has gone away while fetching $fn $rev -- exiting!";
-       }
-
        return ($name, $res);
 }
 
@@ -455,7 +452,6 @@ ($$)
 
 my $last_branch = "";
 my $orig_branch = "";
-my $forward_master = 0;
 my %branch_date;
 
 my $git_dir = $ENV{"GIT_DIR"} || ".git";
@@ -491,21 +487,6 @@ ($$)
                $last_branch = "master";
        }
        $orig_branch = $last_branch;
-       if (-f "$git_dir/CVS2GIT_HEAD") {
-               die <<EOM;
-CVS2GIT_HEAD exists.
-Make sure your working directory corresponds to HEAD and remove CVS2GIT_HEAD.
-You may need to run
-
-    git read-tree -m -u CVS2GIT_HEAD HEAD
-EOM
-       }
-       system('cp', "$git_dir/HEAD", "$git_dir/CVS2GIT_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_branch);
@@ -579,7 +560,7 @@ ($$)
 my $state = 0;
 
 my($patchset,$date,$author_name,$author_email,$branch,$ancestor,$tag,$logmsg);
-my(@old,@new);
+my(@old,@new,@skipped);
 my $commit = sub {
        my $pid;
        while(@old) {
@@ -675,6 +656,11 @@ ($$)
        substr($logmsg,32767) = "" if length($logmsg) > 32767;
        $logmsg =~ s/[\s\n]+\z//;
 
+       if (@skipped) {
+           $logmsg .= "\n\n\nSKIPPED:\n\t";
+           $logmsg .= join("\n\t", @skipped) . "\n";
+       }
+
        print $pw "$logmsg\n"
                or die "Error writing to git-commit-tree: $!\n";
        $pw->close();
@@ -832,14 +818,24 @@ ($$)
                my $fn = $1;
                my $rev = $3;
                $fn =~ s#^/+##;
+               if ($opt_S && $fn =~ m/$opt_S/) {
+                   print "SKIPPING $fn v $rev\n";
+                   push(@skipped, $fn);
+                   next;
+               }
+               print "Fetching $fn   v $rev\n" if $opt_v;
                my ($tmpname, $size) = $cvs->file($fn,$rev);
                if($size == -1) {
                        push(@old,$fn);
                        print "Drop $fn\n" if $opt_v;
                } else {
                        print "".($init ? "New" : "Update")." $fn: $size bytes\n" if $opt_v;
-                       open my $F, '-|', "git-hash-object -w $tmpname"
+                       my $pid = open(my $F, '-|');
+                       die $! unless defined $pid;
+                       if (!$pid) {
+                           exec("git-hash-object", "-w", $tmpname)
                                or die "Cannot create object: $!\n";
+                       }
                        my $sha = <$F>;
                        chomp $sha;
                        close $F;
@@ -877,17 +873,11 @@ ($$)
 
 # Now switch back to the branch we were in before all of this happened
 if($orig_branch) {
-       print "DONE\n" if $opt_v;
-       system("cp","$git_dir/refs/heads/$opt_o","$git_dir/refs/heads/master")
-               if $forward_master;
-       unless ($opt_i) {
-               system('git-read-tree', '-m', '-u', 'CVS2GIT_HEAD', 'HEAD');
-               die "read-tree failed: $?\n" if $?;
-       }
+       print "DONE; you may need to merge manually.\n" if $opt_v;
 } else {
        $orig_branch = "master";
        print "DONE; creating $orig_branch branch\n" if $opt_v;
-       system("cp","$git_dir/refs/heads/$opt_o","$git_dir/refs/heads/master")
+       system("git-update-ref", "refs/heads/master", "refs/heads/$opt_o")
                unless -f "$git_dir/refs/heads/master";
        system('git-update-ref', 'HEAD', "$orig_branch");
        unless ($opt_i) {
@@ -895,4 +885,3 @@ ($$)
                die "checkout failed: $?\n" if $?;
        }
 }
-unlink("$git_dir/CVS2GIT_HEAD");