+ foreach my $iteration (qw(0 1)) {
+ foreach my $file (@files) {
+ my $cfgname = "merge.topbloke-$file";
+ my ($current, $current_estatus);
+ run_git(\$current_estatus,
+ sub { $current = $_; },
+ qw(config), "$cfgname.driver");
+ $current = "## failed $current_estatus" if $current_estatus;
+ next if $current =~ m/^topbloke-merge-driver --v$version /o;
+ die "$file $current ?" if $iteration;
+ debug("setting merge driver $file");
+ run_git(qw(config), "$cfgname.name",
+ "topbloke merge driver for $file");
+ run_git(qw(config), "$cfgname.driver",
+ "topbloke-merge-driver --v$version".
+ " $file %O %A %B %L");
+ }
+ my ($newattrs, $attrsfile);
+ foreach my $file (@files) {
+ my $path = ".topbloke/$file";
+ my $current = run_git_1line(qw(check-attr merge), $path);
+ $current =~ s#^\Q$path\E: merge: ## or die "$file $current ?";
+ my $want = "topbloke-$file";
+ next if $current eq $want;
+ die "$file $current ?" unless $current eq 'unspecified';
+ die "$file $current ?" if $iteration;
+ if (!$newattrs) {
+ $attrsfile = git_dir()."/info/attributes";
+ $newattrs = new IO::File "$attrsfile.tmp", 'w'
+ or die "$attrsfile.tmp: $!";
+ if (!open OA, '<', "$attrsfile") {
+ die "$attrsfile $!" unless $!==&ENOENT;
+ } else {
+ while (<OA>) {
+ print $newattrs $_ or die $!;
+ print "\n" or die $! unless chomp;
+ }
+ die $! if OA->error;
+ die $! unless close OA;
+ }
+ }
+ print $newattrs "$path\tmerge=$want\n" or die $!;
+ }
+ last if !$newattrs;
+ close $newattrs or die $!;
+ rename "$attrsfile.tmp", "$attrsfile" or die $!;
+ }
+}
+
+sub check_no_unwanted_metadata ($) {
+ # for checking foreign branches aren't contaminated
+ my ($gitbranch) = @_;
+ run_git_check_nooutput('foreign unexpectedly contains',
+ qw(ls-tree --name-only),
+ "$gitbranch:",
+ qw(.topbloke));
+}
+
+sub patch_matches_spec ($$) {
+ my ($parsedname, $spec) = @_;
+ foreach my $k (qw(Email Domain Nick)) {
+ debug("patch_matches_spec mismatch $k"), return 0
+ if defined $spec->{$k} &&
+ $parsedname->{$k} ne $spec->{$k};
+ }
+ debug("patch_matches_spec mismatch DatePrefix"), return 0
+ if defined $spec->{DatePrefix} &&
+ substr($parsedname->{Date}, 0, length $spec->{DatePrefix})
+ ne $spec->{DatePrefix};
+ debug("patch_matches_spec match"), return 1;
+}
+
+sub foreach_patch ($$$$) {
+ my ($spec, $deleted_ok, $want, $body) = @_;
+ # runs $body->($patch, $parsedname, \%flags, \%deps, \%pflags, \%included)
+ # $want->[0] 1 2 3
+ # where $deps->{$fullname} etc. are 1 for true or nonexistent for false
+ # and if $want->[$item] is not true, the corresponding item may be undef
+ # and $parsedname is only valid if $spec is not undef
+ # (say $spec { } if you want the name parsed but no restrictions)
+ run_git(sub {
+ debug("foreach_patch considering $_");
+ m/ / or die "$_ ?";
+ my $objname = $`;
+ my @out;
+ my $patch = substr($',19); #');
+ $want->[0] ||= !$deleted_ok;
+ foreach my $file (qw(flags deps pflags included)) {
+
+ if ($file eq 'deps') {
+ # do this check after checking for deleted patches,
+ # so we don't parse deleted patches' names
+ # right, check the spec next
+ if ($spec) {
+ my $have = parse_patch_name($patch);
+ debug("foreach_patch mismatch"), return
+ unless patch_matches_spec($have, $spec);
+ unshift @out, $have;
+ } else {
+ unshift @out, undef;
+ }
+ }
+
+ if (!shift @$want) {
+ push @out, undef;
+ next;
+ }
+
+ my ($got, $data) = git_get_object("$objname:.topbloke/$file");
+ die "$patch $file ?" unless defined $data;
+ my %data;
+ $data{$_}=1 foreach split /\n/, $data;
+
+ if ($file eq 'flags') {
+ debug("foreach_patch Deleted"), return
+ if !$deleted_ok && $data{Deleted};
+ }
+
+ push @out, \%data;
+ }
+ debug("foreach_patch YES @out"), return
+ $body->($patch, @out);
+ },
+ qw(for-each-ref --format), '%(objectname) %(refname)',
+ qw(refs/topbloke-tips));
+}
+
+sub flagsfile_add_flag ($$) {
+ # works on "deps" too
+ my ($flagsfile, $flag) = @_;
+ my $wf = wf_start(".topbloke/$flagsfile");
+ open FI, '<', ".topbloke/$flagsfile" or die $!;
+ while (<FI>) {
+ chomp or die;
+ die "flag $flag already set in $flagsfile ?!" if $_ eq $flag;
+ wf($wf, "$_\n");