peliprint/blueprint/lib/bash_colors.sh

193 lines
6.9 KiB
Bash

#!/bin/bash
#
# The code has been modified to work better with Blueprint.
# Source code:
# https://github.com/technobomz/bash_colors
#
# Constants and functions for terminal colors.
if [[ "$BASH_SOURCE" == "$0" ]]; then
is_script=true
set -eu -o pipefail
else
is_script=false
fi
log_ESC="\033["
# All these variables has a function with the same name, but in lower case.
#
log_RESET=0 # reset all attributes to their defaults
log_RESET_UNDERLINE=24 # underline off
log_RESET_REVERSE=27 # reverse off
log_DEFAULT=39 # set underscore off, set default foreground color
log_DEFAULTB=49 # set default background color
log_BOLD=1 # set bold
log_BRIGHT=2 # set half-bright (simulated with color on a color display)
log_UNDERSCORE=4 # set underscore (simulated with color on a color display)
log_REVERSE=7 # set reverse video
log_BLACK=30 # set black foreground
log_RED=31 # set red foreground
log_GREEN=32 # set green foreground
log_BROWN=33 # set brown foreground
log_BLUE=34 # set blue foreground
log_MAGENTA=35 # set magenta foreground
log_CYAN=36 # set cyan foreground
log_WHITE=37 # set white foreground
log_YELLOW=33 # set yellow foreground
log_BLACKB=40 # set black background
log_REDB=41 # set red background
log_GREENB=42 # set green background
log_BROWNB=43 # set brown background
log_BLUEB=44 # set blue background
log_MAGENTAB=45 # set magenta background
log_CYANB=46 # set cyan background
log_WHITEB=47 # set white background
log_YELLOWB=43 # set yellow background
# check if string exists as function
# usage: if fn_exists "sometext"; then ... fi
function fn_exists
{
type -t "$1" | grep -q 'function'
}
# iterate through command arguments, o allow for iterative color application
function log_layer
{
# default echo setting
log_ECHOSWITCHES="-e"
log_STACK=""
log_SWITCHES=""
ARGS=("$@")
# iterate over arguments in reverse
for ((i=$#-1; i>=0; i--)); do
ARG=${ARGS[$i]}
# echo $ARG
# set log_VAR as last argtype
firstletter=${ARG:0:1}
# check if argument is a switch
if [ "$firstletter" = "-" ] ; then
# if -n is passed, set switch for echo in log_escape
if [[ $ARG == *"n"* ]]; then
log_ECHOSWITCHES="-en"
log_SWITCHES=$ARG
fi
else
# last arg is the incoming string
if [ -z "$log_STACK" ]; then
log_STACK=$ARG
else
# if the argument is function, apply it
if [ -n "$ARG" ] && fn_exists $ARG; then
#continue to pass switches through recursion
log_STACK=$($ARG "$log_STACK" $log_SWITCHES)
fi
fi
fi
done
# pass stack and color var to escape function
log_escape "$log_STACK" $1;
}
# General function to wrap string with escape sequence(s).
# Ex: log_escape foobar $log_RED $log_BOLD
function log_escape
{
local result="$1"
until [ -z "${2:-}" ]; do
if ! [ $2 -ge 0 -a $2 -le 47 ] 2>/dev/null; then
echo "log_escape: argument \"$2\" is out of range" >&2 && return 1
fi
result="${log_ESC}${2}m${result}${log_ESC}${log_RESET}m"
shift || break
done
echo "$log_ECHOSWITCHES" "$result"
}
function log { log_layer $log_RESET "$@"; }
function log_reset { log_layer $log_RESET "$@"; }
function log_reset_underline { log_layer $log_RESET_UNDERLINE "$@"; }
function log_reset_reverse { log_layer $log_RESET_REVERSE "$@"; }
function log_default { log_layer $log_DEFAULT "$@"; }
function log_defaultb { log_layer $log_DEFAULTB "$@"; }
function log_bold { log_layer $log_BOLD "$@"; }
function log_bright { log_layer $log_BRIGHT "$@"; }
function log_underscore { log_layer $log_UNDERSCORE "$@"; }
function log_reverse { log_layer $log_REVERSE "$@"; }
function log_black { log_layer $log_BLACK "$@"; }
function log_red { log_layer $log_RED "$@"; }
function log_green { log_layer $log_GREEN "$@"; }
function log_brown { log_layer $log_BROWN "$@"; }
function log_blue { log_layer $log_BLUE "$@"; }
function log_magenta { log_layer $log_MAGENTA "$@"; }
function log_cyan { log_layer $log_CYAN "$@"; }
function log_white { log_layer $log_WHITE "$@"; }
function log_yellow { log_layer $log_YELLOW "\e[1;33]m$@"; }
function log_blackb { log_layer $log_BLACKB "$@"; }
function log_redb { log_layer $log_REDB "$@"; }
function log_greenb { log_layer $log_GREENB "$@"; }
function log_brownb { log_layer $log_BROWNB "$@"; }
function log_blueb { log_layer $log_BLUEB "$@"; }
function log_magentab { log_layer $log_MAGENTAB "$@"; }
function log_cyanb { log_layer $log_CYANB "$@"; }
function log_whiteb { log_layer $log_WHITEB "$@"; }
function log_yellowb { log_layer $log_YELLOWB "\e[1;43]m$@" }
# Outputs colors table
function log_dump
{
local T='gYw'
echo -e "\n 40m 41m 42m 43m 44m 45m 46m 47m";
for FGs in ' 0m' ' 1m' ' 30m' '1;30m' ' 31m' '1;31m' \
' 32m' '1;32m' ' 33m' '1;33m' ' 34m' '1;34m' \
' 35m' '1;35m' ' 36m' '1;36m' ' 37m' '1;37m';
do
FG=${FGs// /}
echo -en " $FGs \033[$FG $T "
for BG in 40m 41m 42m 43m 44m 45m 46m 47m; do
echo -en " \033[$FG\033[$BG $T \033[0m";
done
echo;
done
echo
log_bold " Code Function Variable"
echo \
' 0 log_reset $log_RESET
1 log_bold $log_BOLD
2 log_bright $log_BRIGHT
4 log_underscore $log_UNDERSCORE
7 log_reverse $log_REVERSE
30 log_black $log_BLACK
31 log_red $log_RED
32 log_green $log_GREEN
33 log_brown $log_BROWN
34 log_blue $log_BLUE
35 log_magenta $log_MAGENTA
36 log_cyan $log_CYAN
37 log_white $log_WHITE
40 log_blackb $log_BLACKB
41 log_redb $log_REDB
42 log_greenb $log_GREENB
43 log_brownb $log_BROWNB
44 log_blueb $log_BLUEB
45 log_magentab $log_MAGENTAB
46 log_cyanb $log_CYANB
47 log_whiteb $log_WHITEB
'
}
if [[ "$is_script" == "true" ]]; then
log_dump
fi