dotfiles/bin/256test.sh

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#!/usr/bin/env bash
# Test 256 color support along with bold and dim attributes.
# Copyright (C) 2014 Egmont Koblinger
#
# 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 2 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, write to the Free Software Foundation, Inc.,
# 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
format_number() {
local num="$1" c=$'\u254F'
if ((num < 10)); then
printf "$c %d" "$num"
else
printf "$c%02d" $((num%100))
fi
}
somecolors() {
local from="$1"
local to="$2"
local prefix="$3"
local line
for line in \
"\e[2mdim " \
"normal " \
"\e[1mbold " \
"\e[1;2mbold+dim "; do
echo -ne "$line"
i=$from
while ((i <= to)); do
echo -ne "\e[$prefix${i}m"
format_number $i
i=$((i+1))
done
echo $'\e[0m\e[K'
done
}
allcolors() {
echo "-- 8 standard colors: SGR ${1}0..${1}7 --"
somecolors 0 7 "$1"
echo
echo "-- 8 bright colors: SGR ${2}0..${2}7 --"
somecolors 0 7 "$2"
echo
echo "-- 256 colors: SGR ${1}8;5;0..255 --"
somecolors 0 15 "${1}8;5;"
echo
somecolors 16 51 "${1}8;5;"
somecolors 52 87 "${1}8;5;"
somecolors 88 123 "${1}8;5;"
somecolors 124 159 "${1}8;5;"
somecolors 160 195 "${1}8;5;"
somecolors 196 231 "${1}8;5;"
echo
somecolors 232 255 "${1}8;5;"
}
allcolors 3 9
echo
allcolors 4 10