color

#!/bin/bash

red=$(tput bold;tput setaf 1)            # bright red text
green=$(tput setaf 2)                    # dim green text
yellow=$(tput bold;tput setaf 3)         # bright yellow text
blue=$(tput bold;tput setaf 4)           # bright blue text
purple=$(tput setaf 5) ; magenta=$purple # magenta text
cyan=$(tput bold;tput setaf 6)           # bright cyan text
white=$(tput bold;tput setaf 7)          # bright white text
normal=$(tput sgr0)                      # normal text
highcontrast=${HIGH_CONTRAST_COLOR:-white}
eval highcontrast=\$${highcontrast}

if [ $# == 0 ]; then
	echo "Usage:"
	echo "color <color> '<regexp>'"
	echo -e "\nMultiple colors and regexps can be used at the same line"
	echo "Availble colors are:"
	echo "${red}red"
	echo "${green}green"
	echo "${yellow}yellow"
	echo "${blue}blue"
	echo "${purple}purple"
	echo "${cyan}cyan"
	echo "${white}white"
        echo "${highcontrast}highcontrast"
	echo -n "${normal}"
	exit 0;
fi

# compile all rules given at command line to 1 set of rules for SED
while [ "/$1/" != '//' ] ; do
  # reset variables
  color=''; regex=''; beep=''
  # assign parameters from command line to variables and shift the rest
  color=$1 ; regex="$2" ; shift 2
  # add the substitute command to the set of rules for SED
  sedrules="$sedrules;s/\($regex\)/${!color}\1$normal/g"
done
 
# call sed with the compiled sedrules to do the main job
sed -e "$sedrules"