document remaining color options

[barcat.git] / barcat

diff --git a/barcat b/barcat
index 728903914eb7597c283de1649a0650d8441b858c..995f66942b0bd7200342b934bf81345a6b47a3de 100755 (executable)
--- a/barcat
+++ b/barcat
@@ -122,6 +122,7 @@ $opt{'value-length'} = 1 if $opt{unmodified};
 $opt{'signal-stat'} //= exists $SIG{INFO} ? 'INFO' : 'QUIT';
 $opt{markers} //= '=avg >31.73v <68.27v +50v |0';
 $opt{palette} //= $opt{color} && [31, 90, 32];
+$opt{hidemin} = ($opt{hidemin} || 1) - 1;
 $opt{input} = @ARGV && $ARGV[0] =~ m/\A[-0-9]/ ? \@ARGV : undef
        and undef $opt{interval};
 
@@ -179,12 +180,21 @@ sub color {
        $_ = color(@_) . $_ . color(0) if defined;
 }
 
+sub sival {
+       my $unit = int(log(abs $_[0] || 1) / log(10) - 3*($_[0] < 1) + 1e-15);
+       my $float = $_[0] !~ /^0*[-0-9]{1,3}$/;
+       sprintf('%3.*f%1s',
+               $float && ($unit % 3) == ($unit < 0),  # tenths
+               $_[0] / 1000 ** int($unit/3),   # number
+               $#{$opt{units}} * 1.5 < abs $unit ? "e$unit" : $opt{units}->[$unit/3]
+       );
+}
+
 sub show_lines {
 
-state $nr = $opt{hidemin} ? $opt{hidemin} - 1 : 0;
-@lines and @lines > $nr or return;
+state $nr = $opt{hidemin};
 @lines or return;
-@lines > $nr or return unless $opt{hidemin};
+@lines > $nr or return;
 
 @order = sort { $b <=> $a } @order unless tied @order;
 my $maxval = $opt{maxval} // (
@@ -234,18 +244,6 @@ if ($opt{markers} and $size > 0) {
        }
 }
 
-@lines > $nr or return if $opt{hidemin};
-
-sub sival {
-       my $unit = int(log(abs $_[0] || 1) / log(10) - 3*($_[0] < 1) + 1e-15);
-       my $float = $_[0] !~ /^0*[-0-9]{1,3}$/;
-       sprintf('%3.*f%1s',
-               $float && ($unit % 3) == ($unit < 0),  # tenths
-               $_[0] / 1000 ** int($unit/3),   # number
-               $#{$opt{units}} * 1.5 < abs $unit ? "e$unit" : $opt{units}->[$unit/3]
-       );
-}
-
 say(
        color(31), sprintf('%*s', $lenval, $minval),
        color(90), '-', color(36), '+',
@@ -294,9 +292,9 @@ say $opt{palette} ? color(0) : '' if $opt{spark};
 
 sub show_stat {
        if ($opt{hidemin} or $opt{hidemax}) {
-               $opt{hidemin} ||= 1;
-               $opt{hidemax} ||= @lines;
-               printf '%s of ', sum(grep {length} @values[$opt{hidemin} - 1 .. $opt{hidemax} - 1]) // 0;
+               printf '%s of ', sum(grep { length }
+                       @values[$opt{hidemin} .. ($opt{hidemax} || @lines) - 1]
+               ) // 0;
        }
        if (@order) {
                my $total = sum @order;
@@ -450,6 +448,11 @@ or alternatively I<1;30> for bright black.
 In case of additional colors,
 the last is used for values equal to the maximum, the first for minima.
 If unspecified, these are green and red respectively (I<31 90 32>).
+Multiple intermediate colors will be distributed
+relative to the size of values.
+
+Predefined color schemes are named I<whites> and I<fire>,
+or I<greys> and I<fire256> for 256-color variants.
 
 =item --spark[=<characters>]