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@cetver
Last active February 17, 2017 14:24
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function for the text coloring/transformation in terminal
#!/bin/bash
#######################################
# Formats a string with ANSI codes
# Arguments:
# $1 the string to be formatted
# FG_* the foreground color, available values
# FG_BLACK
# FG_RED
# FG_GREEN
# FG_YELLOW
# FG_BLUE
# FG_PURPLE
# FG_CYAN
# FG_GREY
# BG_* the background color, available values
# BG_BLACK
# BG_RED
# BG_GREEN
# BG_YELLOW
# BG_BLUE
# BG_PURPLE
# BG_CYAN
# BG_GREY
# TXT_* the text transformation, available values
# TXT_RESET
# TXT_NORMAL
# TXT_BOLD
# TXT_ITALIC
# TXT_UNDERLINE
# TXT_BLINK
# TXT_NEGATIVE
# TXT_CONCEALED
# TXT_CROSSED_OUT
# TXT_FRAMED
# TXT_ENCIRCLED
# TXT_OVERLINED
# Returns:
# None
# Usage:
# ansi_format "Hello world" FG_GREEN
# ansi_format "Hello world" BG_PURPLE
# ansi_format "Hello world" TXT_BOLD
# ansi_format "Hello world" FG_YELLOW BG_BLACK TXT_BLINK
#######################################
function ansi_format {
STRING=$1
FG_COLOR=-1
BG_COLOR=-1
TXT_TRANSFORMATION=-1
FORMAT=''
for argument in "$@"; do
if [[ ${argument} == FG_* ]]; then
FG_COLOR=${argument}
continue
fi
if [[ ${argument} == BG_* ]]; then
BG_COLOR=${argument}
continue
fi
if [[ ${argument} == TXT_* ]]; then
TXT_TRANSFORMATION=${argument}
continue
fi
done
declare -A FG_COLORS
FG_COLORS[FG_BLACK]=30;
FG_COLORS[FG_RED]=31;
FG_COLORS[FG_GREEN]=32;
FG_COLORS[FG_YELLOW]=33;
FG_COLORS[FG_BLUE]=34;
FG_COLORS[FG_PURPLE]=35;
FG_COLORS[FG_CYAN]=36;
FG_COLORS[FG_GREY]=37;
declare -A BG_COLORS
BG_COLORS[BG_BLACK]=40;
BG_COLORS[BG_RED]=41;
BG_COLORS[BG_GREEN]=42;
BG_COLORS[BG_YELLOW]=43;
BG_COLORS[BG_BLUE]=44;
BG_COLORS[BG_PURPLE]=45;
BG_COLORS[BG_CYAN]=46;
BG_COLORS[BG_GREY]=47;
declare -A TXT_TRANSFORMATIONS
TXT_TRANSFORMATIONS[TXT_RESET]=0;
TXT_TRANSFORMATIONS[TXT_NORMAL]=0;
TXT_TRANSFORMATIONS[TXT_BOLD]=1;
TXT_TRANSFORMATIONS[TXT_ITALIC]=3;
TXT_TRANSFORMATIONS[TXT_UNDERLINE]=4;
TXT_TRANSFORMATIONS[TXT_BLINK]=5;
TXT_TRANSFORMATIONS[TXT_NEGATIVE]=7;
TXT_TRANSFORMATIONS[TXT_CONCEALED]=8;
TXT_TRANSFORMATIONS[TXT_CROSSED_OUT]=9;
TXT_TRANSFORMATIONS[TXT_FRAMED]=51;
TXT_TRANSFORMATIONS[TXT_ENCIRCLED]=52;
TXT_TRANSFORMATIONS[TXT_OVERLINED]=53;
if [ ${#FG_COLORS[$FG_COLOR]} != 0 ]; then
FORMAT=${FG_COLORS[$FG_COLOR]}
fi
if [ ${#BG_COLORS[$BG_COLOR]} != 0 ]; then
FORMAT="${FORMAT};${BG_COLORS[$BG_COLOR]}"
fi
if [ ${#TXT_TRANSFORMATIONS[$TXT_TRANSFORMATION]} != 0 ]; then
FORMAT="${FORMAT};${TXT_TRANSFORMATIONS[$TXT_TRANSFORMATION]}"
fi
echo -e -n "\033[0m\033[0${FORMAT}m${STRING}\033[0m"
}
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