color

#!/bin/bash

usage() {
	bin=$(basename $0)
	echo >&2 "Usage: $bin COLOR [BOLD] [ '-' | 'p' ]"
	echo >&2
	echo >&2 '"BOLD" can be passed as any non-empty arg.'
	echo >&2 'Using "-" arg at the end will turn on follow-mode, wrapping each'
	echo >&2 ' stdin line in color-on/color-off markers, instead of using these only once.'
	echo >&2 'Specifying "p" arg at the end will print color code escaped for use in a bash script.'
	echo >&2
	exit ${1:-0}
}
[[ "$1" = -h || "$1" = --help ]] && usage
[[ $# -ge 1 && $# -le 3 ]] || { echo >&2 -e "\nERROR: invalid number of arguments\n"; usage 1; }

case "$1" in
	black) CC=30;;
	red|r) CC=31;;
	green|g) CC=32;;
	yellow|y) CC=33;;
	dark_blue) CC=34;;
	magneta|m) CC=35;;
	blue|b) CC=36;;
	white|w) CC=37;;
	*) CC=;;
esac
shift

CB= follow= print=
while [[ -n "$1" ]]; do
	case "$1" in
		-) follow=t;;
		p) print=t;;
		*) CB='1;';;
	esac
	shift
done
# echo "-$CC -$CB -$follow -$print"

CM="\\033[${CB}${CC}m"
CT="\\033[0m"
unset CC CB

if [[ -n "$print" ]]; then
	echo "echo -e \"\\$CM\" my stuff \"\\$CT\""
	exit 0
fi

if [[ -z "$follow" ]]
then echo -ne "$CM"
else
	while read line; do
		echo -ne "$CM"
		echo "$line"
		echo -ne "$CT"
	done
fi