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|
#!/bin/sh
set -eu
usage() {
cat <<-'EOF'
Usage:
color -c COLOR TEXT
color -h
EOF
}
help() {
cat <<-'EOF'
Options:
-c COLOR
-h, --help show this message
The available colors are:
EOF
list_colors | sed 's/^/ /'
}
END="\033[0m"
black() {
BLACK="\033[0;30m"
printf "${BLACK}${1}${END}"
}
blackb() {
BLACK_B="\033[1;30m"
printf "${BLACK_B}${1}${END}"
}
blacki() {
BLACK_I="\033[0;90m"
printf "${BLACK_I}${1}${END}"
}
white() {
WHITE="\033[0;37m"
printf "${WHITE}${1}${END}"
}
whiteb() {
WHITE_B="\033[1;37m"
printf "${WHITE_B}${1}${END}"
}
red() {
RED="\033[0;31m"
printf "${RED}${1}${END}"
}
redb() {
RED_B="\033[1;31m"
printf "${RED_B}${1}${END}"
}
green() {
GREEN="\033[0;32m"
printf "${GREEN}${1}${END}"
}
greenb() {
GREEN_B="\033[1;32m"
printf "${GREEN_B}${1}${END}"
}
yellow() {
YELLOW="\033[0;33m"
printf "${YELLOW}${1}${END}"
}
yellowb() {
YELLOW_B="\033[1;33m"
printf "${YELLOW_B}${1}${END}"
}
blue() {
BLUE="\033[0;34m"
printf "${BLUE}${1}${END}"
}
blueb() {
BLUE_B="\033[1;34m"
printf "${BLUE_B}${1}${END}"
}
bluei() {
BLUE_I="\033[0;94m"
printf "${BLUE_I}${1}${END}"
}
purple() {
PURPLE="\033[0;35m"
printf "${PURPLE}${1}${END}"
}
purpleb() {
PURPLE_B="\033[1;35m"
printf "${PURPLE_B}${1}${END}"
}
lightblue() {
LIGHT_BLUE="\033[0;36m"
printf "${LIGHT_BLUE}${1}${END}"
}
lightblueb() {
LIGHT_BLUE_B="\033[1;36m"
printf "${LIGHT_BLUE_B}${1}${END}"
}
COLOR_LIST='
black
blackb
white
whiteb
red
redb
green
greenb
yellow
yellowb
blue
blueb
purple
purpleb
lightblue
lightblueb
blacki
bluei
'
list_colors() {
for c in $COLOR_LIST; do
printf '%s\n' "$("$c" "$c")"
done
}
for flag in "$@"; do
case "$flag" in
--)
break
;;
--help)
usage
help
exit
;;
*)
;;
esac
done
while getopts 'c:h' flag; do
case "$flag" in
c)
EXISTS=false
for c in $COLOR_LIST; do
if [ "$OPTARG" = "$c" ]; then
EXISTS=true
break
fi
done
if [ "$EXISTS" = false ]; then
printf 'Invalid color: %s\n' "$OPTARG" >&2
exit 2
fi
COLOR_FN="$OPTARG"
;;
h)
usage
help
exit
;;
*)
usage >&2
exit 2
;;
esac
done
shift $((OPTIND - 1))
assert_arg() {
if [ -z "$1" ]; then
printf 'Missing %s\n\n' "$2" >&2
usage >&2
exit 2
fi
}
TEXT="${1:-}"
assert_arg "$COLOR_FN" '-c COLOR'
assert_arg "$TEXT" 'TEXT'
"$COLOR_FN" "$TEXT"
|
