named palette presets fire, whites

Inspired by <https://github.com/sindresorhus/sparkly>, a js spark port.
Different from its {style:'fire'} in being 16-color compatible and having
red at the lower end (matching lower temperature to low values).

diff --git a/barcat b/barcat
index 15a2269c9829079d81e0b86368e9a398e3d566f4..ad6ccab98ffdaf7ad0eaab230979ff1fbbecff05 100755 (executable)
--- a/barcat
+++ b/barcat
@@ -52,8 +52,11 @@ GetOptions(\%opt,
        'spark:s' => sub {
                $opt{spark} = [split //, $_[1] || '▁▂▃▄▅▆▇█'];
        },
-       'palette:s' => sub {
-               $opt{palette} = [ split /\s/, $_[1] ];
+       'palette=s' => sub {
+               $opt{palette} = {
+                       fire   => [qw( 90 31 91 33 93 97 96 )],
+                       whites => [qw( 1;30 0;37 1;37 )],
+               }->{$_[1]} // [ split /\s/, $_[1] ];
        },
        'stat|s!',
        'signal-stat=s',
@@ -396,7 +399,7 @@ Bars extend from 0 or the minimum value if lower,
 to the largest value encountered.
 These options can be set to customize this range.
 
-=item --palette=<color>...
+=item --palette=(<preset> | <color>...)
 
 Override colors of parsed numbers.
 Can be any CSI escape, such as I<90> for default dark grey,

diff --git a/t/t0002-usage_-h_|wc_-l.out b/t/t0002-usage_-h_|wc_-l.out
index 8f92bfdd49766b1907d4aec8d3b0f9ed6129d0e6..7facc89938bbc5635e3d36ffa56b4c85e9b07db8 100644 (file)
--- a/t/t0002-usage_-h_|wc_-l.out
+++ b/t/t0002-usage_-h_|wc_-l.out
@@ -1 +1 @@
-35
+36