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#!/usr/bin/env bash
# prompt-colors.sh
#
# source this file to get color definitions
# are also printed to STDERR.
define_color_names() {
ColorNames=( Black Red Green Yellow Blue Magenta Cyan White )
FgColors=( 30 31 32 33 34 35 36 37 )
BgColors=( 40 41 42 43 44 45 46 47 )
local AttrNorm=0
local AttrBright=1
local AttrDim=2
local AttrUnder=4
local AttrBlink=5
local AttrRev=7
local AttrHide=8
# define "BoldCOLOR", "BrightCOLOR", and "DimCOLOR" names
# _map_colors ATTRNAME ATTRVALUE
#
# Defines three names for every color, attribute combintaion:
# {ATTRNAME}{COLORNAME}
# {ATTRNAME}{COLORNAME}Fg
# {ATTRNAME}{COLORNAME}Bg
#
# Example: BoldRed, BoldRedFg, BoldRedBg
_map_colors() {
local x=0
local attrname="${1}"
local attrcode="${2}"
while (( x < 8 )) ; do
local colorname="${ColorNames[x]}"
local fgcolorcode="${FgColors[x]}"
local bgcolorcode="${BgColors[x]}"
longcolorname="${attrname}${colorname}"
_def_color "${longcolorname}" "${attrcode}" "${fgcolorcode}"
_def_color "${longcolorname}Fg" "${attrcode}" "${fgcolorcode}"
_def_color "${longcolorname}Bg" "${attrcode}" "${bgcolorcode}"
(( x++ ))
done
}
# _term_color [ N | N M ]
_term_color() {
local cv
if [[ "${#}" -gt 1 ]]; then
cv="${1};${2}"
else
cv="${1}"
fi
echo "\[\033[${cv}m\]"
}
# def_color NAME ATTRCODE COLORCODE
_def_color() {
local def="${1}=\"\`_term_color ${2} ${3}\`\""
eval "${def}"
}
_map_colors Bold ${AttrBright}
_map_colors Bright ${AttrBright}
_map_colors Dim ${AttrDim}
_map_colors '' ${AttrNorm}
_def_color IntenseBlack 0 90
_def_color ResetColor 0 0
}
# do the color definitions only once
if [[ -z "${ColorNames+x}" || "${#ColorNames[*]}" = 0 || -z "${IntenseBlack:+x}" || -z "${ResetColor:+x}" ]]; then
define_color_names
fi
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