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Now __build_sgr_code supports a simple language

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This makes it easy in configs to build control codes for
colour, etc.
This commit is contained in:
ADAM David Alan Martin
2022-06-04 08:27:21 -04:00
parent e34caae816
commit f5ced0e388
1 changed files with 95 additions and 72 deletions
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167
bin/__hex_to_ansi → bin/__build_sgr_code
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@ -13,57 +13,92 @@
debug=0
if [ ${1} == "fg" ]
nocsi=0
if [[ $1 == "no-csi" ]]
then
background=0
elif [ ${1} == "bg" ]
then
background=1
else
exit -1
nocsi=1
shift 1
fi
shift 1
function setup_color_depth()
{
use_8_bit=0
use_4_bit=0
use_3_bit=0
use_8_bit=0
use_4_bit=0
use_3_bit=0
# Must only be set if terminal colors are reduced...
if [[ -v CSHENV_TERMINAL_COLORS ]]
then
if (( ${CSHENV_TERMINAL_COLORS} == 256 ))
then
use_8_bit=1
elif (( ${CSHENV_TERMINAL_COLORS} == 16 ))
then
use_4_bit=1
elif (( ${CSHENV_TERMINAL_COLORS} == 8 ))
then
use_3_bit=1
else
exit -1
fi
fi
}
skip_color=0
if [ $1 == "none" ]
then
skip_color=1
elif [ $1 == "reset" ]
then
output=1
elif [ ${1:0:5} == "ansi:" ]
then
selection=${1:5}
if (( ${selection} > 15 ))
function render_color()
{
command_color=30
if (( ${use_3_bit} ))
then
basecolor=$(( ${command_color} ))
next="$(( ${basecolor} + ${legacy_3_bit} ))"
elif (( ${use_4_bit} ))
then
command_color=$(( ${command_color} + ${intensity_1_bit} * 60 ))
basecolor=$(( ${command_color} + ${background}*10 ))
next="$(( ${basecolor} + ${legacy_3_bit} ))"
elif (( ${use_8_bit} ))
then
basecolor=$(( 8 + ${command_color} + ${background}*10 ))
next="${basecolor};5;${ext_8_bit}"
else
basecolor=$(( 8 + ${command_color} + ${background}*10 ))
next="${basecolor};2;${red_dec};${green_dec};${blue_dec}"
fi
}
function ansi_color()
{
if (( ${1} > 15 ))
then
exit -1
elif (( ${selection} >= 8 ))
elif (( ${1} >= 8 ))
then
use_4_bit=1
intensity_1_bit=1
legacy_3_bit=$(( ${selection} - 8 ))
legacy_3_bit=$(( ${1} - 8 ))
else
use_3_bit=1
intensity_1_bit=0
legacy_3_bit=$(( ${selection} ))
legacy_3_bit=$(( ${1} ))
fi
elif [ ${1:0:4} == "ext:" ]
then
}
function ext_color()
{
use_8_bit=1
selection=${1:4}
if (( ${selection} > 255 ))
if (( ${1} > 255 ))
then
exit -1
else
ext_8_bit=${selection}
ext_8_bit=${1}
fi
else # Parse the hex and do the thing...
}
function rgb_color()
{
# First split off the red, green, and blue components...
red_hex=${1:0:2}
green_hex=${1:2:2}
@ -187,56 +222,26 @@ else # Parse the hex and do the thing...
# We do NOT check for the base colours precisely. Since those 16 can be custom mapped by your terminal emulator, you just pass `ansi:0` thru
# `ansi:15` to select them by ID. Or use `ext:0` thru `ext:255` to select a specific extended colour. Otherwise, we now generate the true-colour
# result:
fi
}
# Must only be set if terminal colors are reduced...
if [[ -v CSHENV_TERMINAL_COLORS ]]
then
if (( ${CSHENV_TERMINAL_COLORS} == 256 ))
then
use_8_bit=1
elif (( ${CSHENV_TERMINAL_COLORS} == 16 ))
then
use_4_bit=1
elif (( ${CSHENV_TERMINAL_COLORS} == 8 ))
then
use_3_bit=1
else
exit -1
fi
fi
function make_color()
{
setup_color_depth
background=$1 # $1 is the background bit
$2 $3 # $2 is the color function
render_color
}
output=""
if (( ! ${skip_color} ))
if (( ! ${nocsi} ))
then
command_color=30
if (( ${use_3_bit} ))
then
basecolor=$(( ${command_color} ))
output="$(( ${basecolor} + ${legacy_3_bit} ))"
elif (( ${use_4_bit} ))
then
command_color=$(( ${command_color} + ${intensity_1_bit} * 60 ))
basecolor=$(( ${command_color} + ${background}*10 ))
output="$(( ${basecolor} + ${legacy_3_bit} ))"
elif (( ${use_8_bit} ))
then
basecolor=$(( 8 + ${command_color} + ${background}*10 ))
output="${basecolor};5;${ext_8_bit}"
else
basecolor=$(( 8 + ${command_color} + ${background}*10 ))
output="${basecolor};2;${red_dec};${green_dec};${blue_dec}"
fi
elif (( ${reset_sgr} ))
then
output="0"
output="["
fi
shift 1
while [[ ! -z $1 ]]
do
case $1 in
reset) next=0 ;;
bold) next=1 ;;
dim) next=2 ;;
italic) next=3 ;;
@ -248,7 +253,20 @@ do
strike|strikethrough|strikethru) next=9 ;;
doubleunder) next=21 ;;
reveal) next=28 ;;
*) exit -1 ;;
ansi:*) make_color 0 ansi_color ${1:5} ;;
ext:*) make_color 0 ext_color ${1:4} ;;
[0-9a-fA-F][0-9a-fA-F][0-9a-fA-F][0-9a-fA-F][0-9a-fA-F][0-9a-fA-F]) make_color 0 rgb_color $1 ;;
fg:ansi:*) make_color 0 ansi_color ${1:8} ;;
fg:ext:*) make_color 0 ext_color ${1:7} ;;
fg:[0-9a-fA-F][0-9a-fA-F][0-9a-fA-F][0-9a-fA-F][0-9a-fA-F][0-9a-fA-F]) make_color 0 rgb_color ${1:3} ;;
bg:ansi:*) make_color 1 ansi_color ${1:8} ;;
bg:ext:*) make_color 1 ext_color ${1:7} ;;
bg:[0-9a-fA-F][0-9a-fA-F][0-9a-fA-F][0-9a-fA-F][0-9a-fA-F][0-9a-fA-F]) make_color 1 rgb_color ${1:3} ;;
*) echo "ERROR!" 1>&2 ; exit -1 ;;
esac
if [[ ! -z ${output} ]]
then
@ -258,6 +276,11 @@ do
shift 1
done
if (( ! ${nocsi} ))
then
output="${output}m"
fi
printf ${output}
exit 0