From d6b73c4dac60665037514ef16f458b7ab70940d8 Mon Sep 17 00:00:00 2001
From: Mischa POSLAWSKY <perl@shiar.org>
Date: Sun, 13 Nov 2022 00:43:16 +0100
Subject: [PATCH] rainbow (lolcat) colour palette

---
 barcat                                          | 14 ++++++++++++++
 t/t1933-lolcat.in                               |  1 +
 t/t1933-lolcat_-c_--spark_--palette=rainbow.out |  1 +
 3 files changed, 16 insertions(+)
 create mode 120000 t/t1933-lolcat.in
 create mode 100644 t/t1933-lolcat_-c_--spark_--palette=rainbow.out

diff --git a/barcat b/barcat
index 253ec86..54141ee 100755
--- a/barcat
+++ b/barcat
@@ -64,6 +64,16 @@ GetOptions(\%opt,
 			)],
 			whites => [qw( 1;30 0;37 1;37 )],
 			greys  => [map {"38;5;$_"} 0, 232..255, 15],
+			rainbow=> [map {"38;5;$_"}
+				196, # r
+				(map { 196 + $_*6   } 0..4), # +g
+				(map { 226 - $_*6*6 } 0..4), # -r
+				(map {  46 + $_     } 0..4), # +b
+				(map {  51 - $_*6   } 0..4), # -g
+				(map {  21 + $_*6*6 } 0..4), # +r
+				(map { 201 - $_     } 0..4), # -b
+				196,
+			],
 		}->{$_[1]} // [ split /[^0-9;]/, $_[1] ];
 	},
 	'stat|s!',
@@ -657,6 +667,10 @@ Sparkline graphics of simple input given as inline parameters:
 
     barcat -_ 3 1 4 1 5 0 9 2 4
 
+Misusing the spark functionality to draw a lolcat line:
+
+    seq $(tput cols) | barcat --spark --indicator=- --palette=rainbow
+
 =head1 AUTHOR
 
 Mischa POSLAWSKY <perl@shiar.org>
diff --git a/t/t1933-lolcat.in b/t/t1933-lolcat.in
new file mode 120000
index 0000000..e52ee82
--- /dev/null
+++ b/t/t1933-lolcat.in
@@ -0,0 +1 @@
+t1920-colorwave_uncolored.in
\ No newline at end of file
diff --git a/t/t1933-lolcat_-c_--spark_--palette=rainbow.out b/t/t1933-lolcat_-c_--spark_--palette=rainbow.out
new file mode 100644
index 0000000..140e11c
--- /dev/null
+++ b/t/t1933-lolcat_-c_--spark_--palette=rainbow.out
@@ -0,0 +1 @@
+█████▇▇▆▆▅▅▄▃▃▂▂▁▁▁▁▁▁▁▁▁▂▂▃▃▄▄▅▆▆▇▇█████████▇▇▆▆▅▅▄▃▃▂▂▁▁▁▁▁▁▁▁▁▂▂▃▃▄▄▅▆▆▇▇████
-- 
2.30.0