mirror of
https://github.com/donovanglover/nix-config.git
synced 2024-11-29 03:34:46 +01:00
60 lines
2.1 KiB
Crystal
60 lines
2.1 KiB
Crystal
##################################################################################
|
|
#
|
|
# New Start: A modern Arch workflow built with an emphasis on functionality.
|
|
# Copyright (C) 2017 Donovan Glover
|
|
#
|
|
# Trucolor: A library that makes colorful output trivial.
|
|
# Copyright (C) 2017 Donovan Glover
|
|
#
|
|
# This program is free software: you can redistribute it and/or modify
|
|
# it under the terms of the GNU General Public License as published by
|
|
# the Free Software Foundation, either version 3 of the License, or
|
|
# (at your option) any later version.
|
|
#
|
|
# This program is distributed in the hope that it will be useful,
|
|
# but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
# GNU General Public License for more details.
|
|
#
|
|
# You should have received a copy of the GNU General Public License
|
|
# along with this program. If not, see <https://www.gnu.org/licenses/>.
|
|
#
|
|
##################################################################################
|
|
|
|
module Trucolor
|
|
# Formats a string *str* with the colors given in the turple *rgb* (0 <= rgb[i] <= 255)
|
|
def self.format(rgb, str)
|
|
return "\x1b[38;2;#{rgb[0]};#{rgb[1]};#{rgb[2]}m#{str}\x1b[0m"
|
|
end
|
|
|
|
# Goes through the colors in such a way that only 256 colors are used (0 <= n <= 255)
|
|
# @requires self.format()
|
|
def self.rainbow(n)
|
|
h = n / 43
|
|
f = n - 43 * h
|
|
t = f * 255 / 43
|
|
q = 255 - t
|
|
case h
|
|
when 0; return {255, t, 0}
|
|
when 1; return {q, 255, 0}
|
|
when 2; return {0, 255, t}
|
|
when 3; return {0, q, 255}
|
|
when 4; return {t, 0, 255}
|
|
when 5; return {255, 0, q}
|
|
end
|
|
return {0, 0, 0}
|
|
end
|
|
|
|
# Tests the format method by printing a rainbow of colors
|
|
# @requires self.rainbow()
|
|
def self.test()
|
|
n = -1
|
|
while (n += 1) < 256
|
|
print self.format(self.rainbow(n), "#{n}".rjust(3, '0')) + " "
|
|
print "\n" if (n + 1) % 16 == 0
|
|
end
|
|
end
|
|
|
|
end
|
|
|