GetOptions(\%opt,
'color|c!',
'C' => sub { $opt{color} = 0 },
- 'field|f=s',
+ 'field|f=s' => sub {
+ $opt{anchor} = /^[0-9]+$/ ? qr/(?:\S*\h+){$_}\K/ : $_ for $_[1];
+ },
'human-readable|H!',
'interval|t:i',
'trim|length|l=s' => sub {
$opt{width} ||= $ENV{COLUMNS} || 80;
$opt{color} //= -t *STDOUT; # enable on tty
$opt{trim} *= $opt{width} / 100 if $opt{trimpct};
-$opt{units} = $opt{'human-readable'} && ['', qw( k M G T <> n μ m )];
+$opt{units} = $opt{'human-readable'} && ['', qw( k M G T P E Z Y y z a f p n μ m )];
+$opt{anchor} //= qr/\A/;
if (defined $opt{interval}) {
$opt{interval} ||= 1;
$SIG{INT} = 'IGNORE'; # continue after assumed eof
my (@lines, @values);
-my $anchor = !defined $opt{field} ? qr/\A/ :
- $opt{field} =~ /^[0-9]+$/ ? qr/(?:\S*\h+){$opt{field}}\K/ :
- $opt{field};
+my $valmatch = qr/$opt{anchor} ( \h* -? [0-9]* \.? [0-9]+ |)/x;
while (readline) {
s/\r?\n\z//;
s/^\h*// unless $opt{unmodified};
- push @values, s/$anchor ( \h* -? [0-9]* \.? [0-9]+ |)/\n/x && $1;
+ push @values, s/$valmatch/\n/ && $1;
if (defined $opt{trim}) {
my $trimpos = abs $opt{trim};
if ($trimpos <= 1) {
sub sival {
my $unit = int(log($_[0]) / log(1000) - ($_[0] < 1));
- sprintf "%3.1f%1s", $_[0] / 1000 ** $unit, $opt{units}->[$unit];
+ sprintf "%3.1f%1s", $_[0] / 1000 ** $unit,
+ $#{$opt{units}} >> 1 < abs $unit ? "e$unit" : $opt{units}->[$unit];
}
while ($nr <= $#lines) {