color headers

[barcat.git] / barcat

diff --git a/barcat b/barcat
index d7361a11f9655ab589bbd659bf1c1d72a7c42c0f..fd110c5d14f127da94c86a8828c54965eef15a24 100755 (executable)
--- a/barcat
+++ b/barcat
@@ -6,7 +6,7 @@ use List::Util qw( min max sum );
 use open qw( :std :utf8 );
 use experimental qw( lexical_subs );
 
-our $VERSION = '1.05';
+our $VERSION = '1.06';
 
 use Getopt::Long '2.33', qw( :config gnu_getopt );
 my %opt;
@@ -42,6 +42,7 @@ GetOptions(\%opt,
                        " (range expected)\n"
                );
        },
+       'header!',
        'markers|m=s',
        'graph-format=s' => sub {
                $opt{'graph-format'} = substr $_[1], 0, 1;
@@ -53,6 +54,10 @@ GetOptions(\%opt,
        'signal-stat=s',
        'unmodified|u!',
        'width|w=i',
+       'version' => sub {
+               say "barcat version $VERSION";
+               exit;
+       },
        'usage|h' => sub {
                local $/;
                my $pod = readline *DATA;
@@ -94,6 +99,7 @@ $SIG{ALRM} = sub {
        show_lines();
        alarm $opt{interval} if defined $opt{interval} and $opt{interval} > 0;
 };
+$SIG{INT} = \&show_exit;
 
 if (defined $opt{interval}) {
        $opt{interval} ||= 1;
@@ -105,12 +111,6 @@ if (defined $opt{interval}) {
        } or warn $@, "Expect slowdown with large datasets!\n";
 }
 
-$SIG{INT} = sub {
-       $SIG{INT} = 'DEFAULT';  # reset for subsequent attempts
-       exit if !$.;
-       'IGNORE' # continue after assumed eof
-};
-
 my $valmatch = qr/$opt{anchor} ( \h* -? [0-9]* \.? [0-9]+ (?: e[+-]?[0-9]+ )? |)/x;
 while (readline) {
        s/\r?\n\z//;
@@ -193,6 +193,14 @@ sub sival {
        );
 }
 
+say(
+       color(31), sprintf('%*s', $lenval, $minval),
+       color(90), '-', color(36), '+',
+       color(32), sprintf('%*s', $size * ($maxval - $minval) - 3, $maxval),
+       color(90), '-', color(36), '+',
+       color(0),
+) if $opt{header};
+
 while ($nr <= $#lines) {
        $nr >= $opt{hidemax} and last if defined $opt{hidemax};
        my $val = $values[$nr];
@@ -221,7 +229,6 @@ continue {
 say '' if $opt{spark};
 
 }
-show_lines();
 
 sub show_stat {
        if ($opt{hidemin} or $opt{hidemax}) {
@@ -241,7 +248,15 @@ sub show_stat {
        }
        say '';
 }
-show_stat() if $opt{stat};
+
+sub show_exit {
+       show_lines();
+       show_stat() if $opt{stat};
+       exit 130 if @_;  # 0x80+signo
+       exit;
+}
+
+show_exit();
 
 __END__
 =encoding utf8