+our $do_git; # contains may chars 'c' (count) and/or 'o' (object)
+our $do_git_untracked = 1;
+our $argcounter;
+
+sub rjustt ($$) { # right justify and truncate (ie, pad and truncate at left)
+ my ($sz, $whole) = @_;
+ my $lw = length $whole;
+ return $lw > $sz
+ ? substr($whole, $lw-$sz)
+ : sprintf "%${sz}s", $whole;
+}
+
+sub ljustt ($$$) { # always includes $suffix
+ my ($sz, $whole, $suffix) = @_;
+ $sz -= length $suffix;
+ return sprintf "%-${sz}.${sz}s%s", $whole, $suffix;
+}
+
+sub gentextmodule_plusq ($$) {
+ my ($form, $s) = @_;
+ my $l = length $s;
+ gentextmodule($form, $s);
+ if (!($l & 1) && $l>=4) {
+ gentextmodule("${form}S", substr($s,0,$l/2), substr($s,$l/2));
+ }
+}
+
+our @gcmd;
+
+sub gitrun_start () {
+ open F, "-|", @gcmd or die "$gcmd[0]: start: $!";
+}
+
+sub gitrun_done (;$) {
+ my ($errok) = @_;
+ $?=0; $!=0;
+ return if close F;
+ return if $errok;
+ die $! if $!;
+ die "@gcmd failed ($?)\n";
+}
+
+sub gitoutput (@) {
+ (@gcmd) = (qw(git), @_);
+ gitrun_start;
+ $_ = <F>;
+ gitrun_done;
+ defined or die "@gcmd produced no output";
+ chomp or die "@gcmd produced no final newline";
+ $_;
+}
+
+sub do_git () {
+ return unless $do_git;
+
+ @gcmd = qw(git status --porcelain);
+ push @gcmd, qw(--untracked=no) unless $do_git_untracked;
+
+ my $git_dirty = '';
+ gitrun_start;
+ while (<F>) {
+ if (m/^\?\?/ && $do_git_untracked) {
+ $git_dirty = '+';
+ next;
+ }
+ $git_dirty = '*';
+ last;
+ }
+ gitrun_done($git_dirty eq '*');
+
+ my $git_count;
+ my $git_object;
+
+ if ($do_git =~ m/c/) {
+ $git_count = gitoutput qw(rev-list --first-parent --count HEAD);
+ }
+ if ($do_git =~ m/o/) {
+ $git_object = gitoutput qw(rev-parse HEAD);
+ }
+
+ foreach my $sz (3..10) {
+ gentextmodule_demo_next_batch();
+
+ gentextmodule_plusq("Small$sz", rjustt($sz, $git_count.$git_dirty))
+ if defined $git_count;
+
+ gentextmodule_plusq("Git$sz", ljustt($sz, $git_object, $git_dirty))
+ if defined $git_object;
+
+ gentextmodule("Full$sz",
+ rjustt($sz, $git_count.$git_dirty),
+ ljustt($sz, $git_object, ''))
+ if defined $git_count && defined $git_object;
+ }
+}
+
+while (@ARGV) {
+ $_ = shift;
+ if (m/^--(no)?-git$/) {
+ $do_git = $1 ? '' : 'co';
+ } elsif (m/^---git=object$/) {
+ $do_git = 'o';
+ } elsif (m/^-i$/) {
+ $do_git_untracked = 0;
+ } elsif (m/^-t(.*)$/) {
+ my $form = $1;
+ die "bad usage: -t needs string argument\n";
+ $_ = shift;
+ gentextmodule($form, split /\n/, $_);
+ $argcounter //= 0;
+ } elsif (m/^[^-]/) {
+ gentextmodule("Arg$argcounter", $_);
+ $argcounter++;
+ } else {
+ die "bad usage: unknown option \`$_'\n";
+ }
+}
+
+$do_git //= defined($argcounter) ? '' : 'co';
+