colorize.sh

#!/bin/bash

function addcolor
{
    local newcolor="\e[${3}m\033[$1;${2}m"
    colors+=("$newcolor")
    #echo -e "${newcolor}Adding new color$RESET: $1, $2, $3"
}
function askAllColors
{
    if [ -f "$cfg" ]
    then
        echo "About to replace existing list. Press ^C to cancel, enter to continue."
        read
    fi
    for i in $(seq 1 1); do for j in $(seq 29 37); do for k in $(seq 39 47)
    do
        local newcolor="\E[${k}m\033[$i;${j}m"
        echo -ne "Use this ${newcolor}color combination$RESET? (y/n): "
        local answer=""
        read answer
        if [ "$answer" == "y" ]
        then
            echo "addcolor $i $j $k" >> $cfg
        fi
    done; done; done
}
function addReadableColors
{
    if [ -f "$cfg" ]
    then
        source $cfg
    else
        addcolor 1 37 41
        addcolor 1 32 41
        addcolor 1 33 41
        addcolor 1 34 41
        addcolor 1 36 41
        addcolor 1 35 42
        addcolor 1 34 42
        addcolor 1 33 42
        addcolor 1 31 42
        addcolor 1 31 43
        addcolor 1 34 43
        addcolor 1 35 43
        addcolor 1 30 44
        addcolor 1 31 44
        addcolor 1 32 44
        addcolor 1 36 44
        addcolor 1 32 45
        addcolor 1 33 45
        addcolor 1 34 45
        addcolor 1 36 45
        addcolor 1 31 46
        addcolor 1 34 46
        addcolor 1 35 46
        addcolor 1 31 47
        addcolor 1 34 47
        addcolor 1 35 47
    fi
}
function colorize
{
    local str="$*"
    local offset=1
    local num="$(( ($offset+$(echo $str |sum |sed "s/^0*//g" |sed "s/ .*//g")) % ${#colors[@]} ))"
    echo -ne "${colors[$num]}"
}

function colorize_main
{
    local RESET="\033[00m"
    local colors=()
    local cfg="$HOME/.colors.txt"
    if [ -z "$*" ]
    then
        askAllColors
    else
        addReadableColors
        colorize "$@"
    fi
}

#if run directly, colorize stuff
[[ "${BASH_SOURCE[0]}" == "${0}" ]] && colorize_main "$@"