134 lines
3.7 KiB
Bash
Executable file
134 lines
3.7 KiB
Bash
Executable file
#!/usr/bin/env bash
|
|
# set -vx
|
|
|
|
# Copyright (C) 2022 Brian Hayes
|
|
|
|
# This program is free software: you can redistribute it and/or modify
|
|
# it under the terms of the GNU Affero 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 Affero General Public License for more details.
|
|
|
|
# You should have received a copy of the GNU Affero General Public License
|
|
# along with this program. If not, see <http://www.gnu.org/licenses/>.
|
|
|
|
printhelp() {
|
|
cat <<EOM
|
|
usage: dye [-h|-r] [color_code]
|
|
options:
|
|
-x hex to rgb
|
|
-r rgb to hex
|
|
examples:
|
|
dye -x "#ffffff"
|
|
dye -r 255 255 255
|
|
dye -x "#43fF6480"
|
|
dye -r 67 255 100 0.5
|
|
EOM
|
|
exit 1
|
|
}
|
|
|
|
alpha_to_hex() {
|
|
printf "%02x\n" "$(echo "scale=0; $1*255" | bc)" 2>/dev/null
|
|
}
|
|
|
|
hex_to_rgb() {
|
|
: "${1/\#/}"
|
|
if ((${#_} == 8)); then
|
|
((r = 16#${_:0:2}, g = 16#${_:2:2}, b = 16#${_:4:2}, a = 16#${_:6:2}))
|
|
a=$(echo "scale=2; $a / 255" | bc)
|
|
else
|
|
((r = 16#${_:0:2}, g = 16#${_:2:2}, b = 16#${_:4:2}))
|
|
a=1.0
|
|
fi
|
|
printf "%s\n" "rgb($r, $g, $b, $a)"
|
|
}
|
|
|
|
rgb_to_hex() {
|
|
echo "$@"
|
|
if [[ "$*" =~ rgb ]]; then
|
|
set -- "$(tr ',' ' ' <<<"$*" | tr -cd ' 0-9')"
|
|
fi
|
|
|
|
if [[ -n "$4" ]]; then
|
|
local a
|
|
a=$(alpha_to_hex "$4")
|
|
printf "#%02x%02x%02x%s\n" "$1" "$2" "$3" "$a"
|
|
else
|
|
printf "#%02x%02x%02x\n" "$1" "$2" "$3"
|
|
fi
|
|
}
|
|
|
|
error() {
|
|
printf "error: %s\n" "$1" 1>&2
|
|
${2:+exit $2}
|
|
}
|
|
|
|
dependencycheck() {
|
|
local dep missingdependencies=0
|
|
for dep in "$@"; do
|
|
if ! command -v "$dep" &>/dev/null; then
|
|
error "dependency not met: $dep"
|
|
fi
|
|
done
|
|
if [[ $missingdependencies -gt 0 ]]; then
|
|
exit 1
|
|
fi
|
|
}
|
|
|
|
main() {
|
|
if [[ "$#" -lt 1 ]]; then
|
|
printhelp
|
|
fi
|
|
|
|
while getopts ":x:r:?" arg; do
|
|
case $arg in
|
|
x)
|
|
if [[ "$#" -gt 2 ]]; then
|
|
error "-x only parses one following argument"
|
|
exit 2
|
|
fi
|
|
rgbval=$(hex_to_rgb "${2:-''}")
|
|
printf "%s\n" "$rgbval"
|
|
read -e -r -p "save code to clipboard?(y/n): " clipit
|
|
if [[ "$clipit" == "yes" || "$clipit" == "y" ]]; then
|
|
dependencycheck xclip
|
|
printf "%s" "$rgbval" | xclip -sel clip
|
|
fi
|
|
;;
|
|
r)
|
|
if [[ "$#" -gt 5 ]]; then
|
|
error "-r parses up to four following argument"
|
|
exit 2
|
|
elif [[ "$#" -lt 4 ]]; then
|
|
error "-r parses no less than three arguments"
|
|
exit 2
|
|
fi
|
|
hexval=$(rgb_to_hex "${@:2}" | sed -n 2p)
|
|
printf "%s\n" "$hexval"
|
|
read -e -r -p "save code to clipboard?(y/n): " clipit
|
|
if [[ "$clipit" == "yes" || "$clipit" == "y" ]]; then
|
|
dependencycheck xclip
|
|
printf "%s" "$hexval" | xclip -sel clip
|
|
fi
|
|
;;
|
|
?)
|
|
printhelp
|
|
;;
|
|
esac
|
|
done
|
|
}
|
|
|
|
main "$@"
|
|
|
|
# Credits:
|
|
# hex_to_rgb() and rgb_to_hex() taken from Akash Mittal:
|
|
# https://akashmittal.com/code-example-convert-hex-color-to-rgb-rgb-to-hex-using-bash-script/
|
|
|
|
# Both users zeekar and DyslexicHobo on reddit for their help:
|
|
# https://reddit.com/r/bash/comments/zqmvz8/rgbhex_converter_syntax_how_does_this_work/
|
|
# And yeah, I also used ChatGPT:
|
|
# https://openai.com/blog/chatgpt/
|