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color.sh
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color.sh
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#!/bin/bash
# gflags
_ble_color_gflags_Bold=0x01
_ble_color_gflags_Italic=0x02
_ble_color_gflags_Underline=0x04
_ble_color_gflags_Revert=0x08
_ble_color_gflags_Invisible=0x10
_ble_color_gflags_Strike=0x20
_ble_color_gflags_Blink=0x40
_ble_color_gflags_DecorationMask=0x77
_ble_color_gflags_FgMask=0x00000000FFFFFF00
_ble_color_gflags_BgMask=0x00FFFFFF00000000
_ble_color_gflags_FgIndexed=0x0100000000000000
_ble_color_gflags_BgIndexed=0x0200000000000000
function ble/color/define-options {
local ncolor=0
if [[ $TERM == xterm* || $TERM == *-256color || $TERM == kterm* ]]; then
ncolor=256
elif [[ $TERM == *-88color ]]; then
ncolor=88
fi
bleopt/declare -v term_true_colors semicolon
bleopt/declare -v term_index_colors "$ncolor"
}
ble/color/define-options
function bleopt/check:term_true_colors {
ble/color/g2sgr/.clear-cache
return 0
}
function bleopt/check:term_index_colors {
ble/color/g2sgr/.clear-cache
return 0
}
function ble/color/initialize-term-colors {
local fields
ble/string#split fields \; "$_ble_term_DA2R"
if [[ $bleopt_term_true_colors == auto ]]; then
# truecolor support 自動判定 (暫定実装)
local value=
if [[ $TERM == *-24bit || $TERM == *-direct ]]; then
value=colon
elif [[ $TERM == *-24bits || $TERM == *-truecolor || $COLORTERM == *24bit* || $COLORTERM == *truecolor* ]]; then
value=semicolon
else
case ${fields[0]} in
(83) # screen (truecolor on にしている必要がある。判定方法は不明)
if ((fields[1]>=49900)); then
value=semicolon
fi ;;
(67)
if ((fields[1]>=100000)); then
: # cygwin terminal
else
# contra
value=colon
fi ;;
esac
fi
[[ $value ]] &&
bleopt term_true_colors="$value"
fi
}
blehook DA2R+=ble/color/initialize-term-colors
function ble-color-show {
if (($#)); then
ble/base/print-usage-for-no-argument-command 'Update and reload ble.sh.' "$@"
return "$?"
fi
local cols=16
local bg bg0 bgN ret gflags=$((_ble_color_gflags_BgIndexed|_ble_color_gflags_FgIndexed))
for ((bg0=0;bg0<256;bg0+=cols)); do
((bgN=bg0+cols,bgN<256||(bgN=256)))
for ((bg=bg0;bg<bgN;bg++)); do
ble/color/g2sgr $((gflags|bg<<32))
printf '%s%03d ' "$ret" "$bg"
done
printf '%s\n' "$_ble_term_sgr0"
for ((bg=bg0;bg<bgN;bg++)); do
ble/color/g2sgr $((gflags|bg<<32|15<<8))
printf '%s%03d ' "$ret" "$bg"
done
printf '%s\n' "$_ble_term_sgr0"
done
}
## @fn ble/color/g2sgr g
## @fn ble/color/g2sgr-ansi g
## @param[in] g
## @var[out] ret
_ble_color_g2sgr=()
_ble_color_g2sgr_ansi=()
function ble/color/g2sgr/.impl {
local g=$(($1))
local sgr=0
((g&_ble_color_gflags_Bold)) && sgr="$sgr;${_ble_term_sgr_bold:-1}"
((g&_ble_color_gflags_Italic)) && sgr="$sgr;${_ble_term_sgr_sitm:-3}"
((g&_ble_color_gflags_Underline)) && sgr="$sgr;${_ble_term_sgr_smul:-4}"
((g&_ble_color_gflags_Blink)) && sgr="$sgr;${_ble_term_sgr_blink:-5}"
((g&_ble_color_gflags_Revert)) && sgr="$sgr;${_ble_term_sgr_rev:-7}"
((g&_ble_color_gflags_Invisible)) && sgr="$sgr;${_ble_term_sgr_invis:-8}"
((g&_ble_color_gflags_Strike)) && sgr="$sgr;${_ble_term_sgr_strike:-9}"
if ((g&_ble_color_gflags_FgIndexed)); then
local fg=$((g>>8&0xFF))
ble/color/.color2sgrfg "$fg"
sgr="$sgr;$ret"
elif ((g&_ble_color_gflags_FgMask)); then
local rgb=$((1<<24|g>>8&0xFFFFFF))
ble/color/.color2sgrfg "$rgb"
sgr="$sgr;$ret"
fi
if ((g&_ble_color_gflags_BgIndexed)); then
local bg=$((g>>32&0xFF))
ble/color/.color2sgrbg "$bg"
sgr="$sgr;$ret"
elif ((g&_ble_color_gflags_BgMask)); then
local rgb=$((1<<24|g>>32&0xFFFFFF))
ble/color/.color2sgrbg "$rgb"
sgr="$sgr;$ret"
fi
ret=$'\e['$sgr'm'
_ble_color_g2sgr[$1]=$ret
}
function ble/color/g2sgr/.clear-cache {
_ble_color_g2sgr=()
}
function ble/color/g2sgr {
ret=${_ble_color_g2sgr[$1]}
[[ $ret ]] || ble/color/g2sgr/.impl "$1"
}
function ble/color/g2sgr-ansi/.impl {
local g=$(($1))
local sgr=0
((g&_ble_color_gflags_Bold)) && sgr="$sgr;1"
((g&_ble_color_gflags_Italic)) && sgr="$sgr;3"
((g&_ble_color_gflags_Underline)) && sgr="$sgr;4"
((g&_ble_color_gflags_Blink)) && sgr="$sgr;5"
((g&_ble_color_gflags_Revert)) && sgr="$sgr;7"
((g&_ble_color_gflags_Invisible)) && sgr="$sgr;8"
((g&_ble_color_gflags_Strike)) && sgr="$sgr;9"
if ((g&_ble_color_gflags_FgIndexed)); then
local fg=$((g>>8&0xFF))
sgr="$sgr;38:5:$fg"
elif ((g&_ble_color_gflags_FgMask)); then
local rgb=$((1<<24|g>>8&0xFFFFFF))
local R=$((rgb>>16&0xFF)) G=$((rgb>>8&0xFF)) B=$((rgb&0xFF))
sgr="$sgr;38:2::$r:$g:$b"
fi
if ((g&_ble_color_gflags_BgIndexed)); then
local bg=$((g>>32&0xFF))
sgr="$sgr;48:5:$bg"
elif ((g&_ble_color_gflags_BgMask)); then
local rgb=$((1<<24|g>>32&0xFFFFFF))
local R=$((rgb>>16&0xFF)) G=$((rgb>>8&0xFF)) B=$((rgb&0xFF))
sgr="$sgr;48:2::$r:$g:$b"
fi
ret=$'\e['$sgr'm'
_ble_color_g2sgr_ansi[$1]=$ret
}
function ble/color/g2sgr-ansi {
ret=${_ble_color_g2sgr_ansi[$1]}
[[ $ret ]] || ble/color/g2sgr-ansi/.impl "$1"
}
function ble/color/g#setfg-clear {
(($1&=~(_ble_color_gflags_FgIndexed|_ble_color_gflags_FgMask)))
}
function ble/color/g#setbg-clear {
(($1&=~(_ble_color_gflags_BgIndexed|_ble_color_gflags_BgMask)))
}
function ble/color/g#setfg-index {
local __color=$2
(($1=$1&~_ble_color_gflags_FgMask|_ble_color_gflags_FgIndexed|(__color&0xFF)<<8)) # index color
}
function ble/color/g#setbg-index {
local __color=$2
(($1=$1&~_ble_color_gflags_BgMask|_ble_color_gflags_BgIndexed|(__color&0xFF)<<32)) # index color
}
function ble/color/g#setfg-rgb {
local __R=$2 __G=$3 __B=$4
((__R&=0xFF,__G&=0xFF,__B&=0xFF))
if ((__R==0&&__G==0&&__B==0)); then
ble/color/g#setfg-index "$1" 16
else
(($1=$1&~(_ble_color_gflags_FgIndexed|_ble_color_gflags_FgMask)|__R<<24|__G<<16|__B<<8)) # true color
fi
}
function ble/color/g#setbg-rgb {
local __R=$2 __G=$3 __B=$4
((__R&=0xFF,__G&=0xFF,__B&=0xFF))
if ((__R==0&&__G==0&&__B==0)); then
ble/color/g#setbg-index "$1" 16
else
(($1=$1&~(_ble_color_gflags_BgIndexed|_ble_color_gflags_BgMask)|__R<<48|__G<<40|__B<<32)) # true color
fi
}
function ble/color/g#setfg-cmyk {
local __C=$2 __M=$3 __Y=$4 __K=${5:-0}
((__K=~__K&0xFF,
__C=(~__C&0xFF)*__K/255,
__M=(~__M&0xFF)*__K/255,
__Y=(~__Y&0xFF)*__K/255))
ble/color/g#setfg-rgb "$__C" "$__M" "$__Y"
}
function ble/color/g#setbg-cmyk {
local __C=$2 __M=$3 __Y=$4 __K=${5:-0}
((__K=~__K&0xFF,
__C=(~__C&0xFF)*__K/255,
__M=(~__M&0xFF)*__K/255,
__Y=(~__Y&0xFF)*__K/255))
ble/color/g#setbg-rgb "$1" "$__C" "$__M" "$__Y"
}
function ble/color/g#setfg {
local __color=$2
if ((__color<0)); then
ble/color/g#setfg-clear "$1"
elif ((__color>=0x1000000)); then
if ((__color==0x1000000)); then
ble/color/g#setfg-index "$1" 16
else
(($1=$1&~(_ble_color_gflags_FgIndexed|_ble_color_gflags_FgMask)|(__color&0xFFFFFF)<<8)) # true color
fi
else
ble/color/g#setfg-index "$1" "$__color"
fi
}
function ble/color/g#setbg {
local __color=$2
if ((__color<0)); then
ble/color/g#setbg-clear "$1"
elif ((__color>=0x1000000)); then
if ((__color==0x1000000)); then
ble/color/g#setbg-index "$1" 16
else
(($1=$1&~(_ble_color_gflags_BgIndexed|_ble_color_gflags_BgMask)|(__color&0xFFFFFF)<<32)) # true color
fi
else
ble/color/g#setbg-index "$1" "$__color"
fi
}
## @fn ble/color/g#append g g2
## g に描画属性 g2 を上書きします。
## @param[in,out] g
## @param[in] g2
function ble/color/g#append {
local __g2=$2
((__g2&(_ble_color_gflags_FgMask|_ble_color_gflags_FgIndexed))) &&
(($1&=~(_ble_color_gflags_FgMask|_ble_color_gflags_FgIndexed)))
((__g2&(_ble_color_gflags_BgMask|_ble_color_gflags_BgIndexed))) &&
(($1&=~(_ble_color_gflags_BgMask|_ble_color_gflags_BgIndexed)))
(($1|=__g2))
}
function ble/color/g#compose {
(($1=($2)))
local __g2
for __g2 in "${@:3}"; do
ble/color/g#append "$1" "$__g2"
done
}
function ble/color/g.setfg { ble/color/g#setfg g "$@"; }
function ble/color/g.setbg { ble/color/g#setbg g "$@"; }
function ble/color/g.setfg-clear { ble/color/g#setfg-clear g "$@"; }
function ble/color/g.setbg-clear { ble/color/g#setbg-clear g "$@"; }
function ble/color/g.setfg-index { ble/color/g#setfg-index g "$@"; }
function ble/color/g.setbg-index { ble/color/g#setbg-index g "$@"; }
function ble/color/g.setfg-rgb { ble/color/g#setfg-rgb g "$@"; }
function ble/color/g.setbg-rgb { ble/color/g#setbg-rgb g "$@"; }
function ble/color/g.setfg-cmyk { ble/color/g#setfg-cmyk g "$@"; }
function ble/color/g.setbg-cmyk { ble/color/g#setbg-cmyk g "$@"; }
function ble/color/g.append { ble/color/g#append g "$@"; }
function ble/color/g.compose { ble/color/g#compose g "$@"; }
function ble/color/g#getfg {
local g=$1
if ((g&_ble_color_gflags_FgIndexed)); then
((ret=g>>8&0xFF))
elif ((g&_ble_color_gflags_FgMask)); then
((ret=0x1000000|(g>>8&0xFFFFFF)))
else
((ret=-1))
fi
}
function ble/color/g#getbg {
local g=$1
if ((g&_ble_color_gflags_BgIndexed)); then
((ret=g>>32&0xFF))
elif ((g&_ble_color_gflags_BgMask)); then
((ret=0x1000000|(g>>32&0xFFFFFF)))
else
((ret=-1))
fi
}
function ble/color/g#compute-fg {
local g=$1
if ((g&_ble_color_gflags_Invisible)); then
ble/color/g#compute-bg "$g"
elif ((g&_ble_color_gflags_Revert)); then
ble/color/g#getbg "$g"
else
ble/color/g#getfg "$g"
fi
}
function ble/color/g#compute-bg {
local g=$1
if ((g&_ble_color_gflags_Revert)); then
ble/color/g#getfg "$g"
else
ble/color/g#getbg "$g"
fi
}
## @fn ble/color/gspec2g gspec
## @param[in] gspec
## @var[out] ret
function ble/color/gspec2g {
local g=0 entry
for entry in ${1//,/ }; do
case "$entry" in
(bold) ((g|=_ble_color_gflags_Bold)) ;;
(underline) ((g|=_ble_color_gflags_Underline)) ;;
(blink) ((g|=_ble_color_gflags_Blink)) ;;
(invis) ((g|=_ble_color_gflags_Invisible)) ;;
(reverse) ((g|=_ble_color_gflags_Revert)) ;;
(strike) ((g|=_ble_color_gflags_Strike)) ;;
(italic) ((g|=_ble_color_gflags_Italic)) ;;
(standout) ((g|=_ble_color_gflags_Revert|_ble_color_gflags_Bold)) ;;
(fg=*)
ble/color/.name2color "${entry:3}"
ble/color/g.setfg "$ret" ;;
(bg=*)
ble/color/.name2color "${entry:3}"
ble/color/g.setbg "$ret" ;;
(none)
g=0 ;;
esac
done
ret=$g
}
## @fn ble/color/g2gspec g
## @var[out] ret
function ble/color/g2gspec {
local g=$1 gspec=
if ((g&_ble_color_gflags_FgIndexed)); then
local fg=$((g>>8&0xFF))
ble/color/.color2name "$fg"
gspec=$gspec,fg=$ret
elif ((g&_ble_color_gflags_FgMask)); then
local rgb=$((1<<24|g>>8&0xFFFFFF))
ble/color/.color2name "$rgb"
gspec=$gspec,fg=$ret
fi
if ((g&_ble_color_gflags_BgIndexed)); then
local bg=$((g>>32&0xFF))
ble/color/.color2name "$bg"
gspec=$gspec,bg=$ret
elif ((g&_ble_color_gflags_BgMask)); then
local rgb=$((1<<24|g>>32&0xFFFFFF))
ble/color/.color2name "$rgb"
gspec=$gspec,bg=$ret
fi
((g&_ble_color_gflags_Bold)) && gspec=$gspec,bold
((g&_ble_color_gflags_Underline)) && gspec=$gspec,underline
((g&_ble_color_gflags_Blink)) && gspec=$gspec,blink
((g&_ble_color_gflags_Invisible)) && gspec=$gspec,invis
((g&_ble_color_gflags_Revert)) && gspec=$gspec,reverse
((g&_ble_color_gflags_Strike)) && gspec=$gspec,strike
((g&_ble_color_gflags_Italic)) && gspec=$gspec,italic
gspec=${gspec#,}
ret=${gspec:-none}
}
## @fn ble/color/gspec2sgr gspec
## @param[in] gspec
## @var[out] ret
function ble/color/gspec2sgr {
local sgr=0 entry
for entry in ${1//,/ }; do
case "$entry" in
(bold) sgr="$sgr;${_ble_term_sgr_bold:-1}" ;;
(underline) sgr="$sgr;${_ble_term_sgr_smul:-4}" ;;
(blink) sgr="$sgr;${_ble_term_sgr_blink:-5}" ;;
(invis) sgr="$sgr;${_ble_term_sgr_invis:-8}" ;;
(reverse) sgr="$sgr;${_ble_term_sgr_rev:-7}" ;;
(strike) sgr="$sgr;${_ble_term_sgr_strike:-9}" ;;
(italic) sgr="$sgr;${_ble_term_sgr_sitm:-3}" ;;
(standout) sgr="$sgr;${_ble_term_sgr_bold:-1};${_ble_term_sgr_rev:-7}" ;;
(fg=*)
ble/color/.name2color "${entry:3}"
ble/color/.color2sgrfg "$ret"
sgr="$sgr;$ret" ;;
(bg=*)
ble/color/.name2color "${entry:3}"
ble/color/.color2sgrbg "$ret"
sgr="$sgr;$ret" ;;
(none)
sgr=0 ;;
esac
done
ret="[${sgr}m"
}
function ble/color/.name2color/.clamp {
local text=$1 max=$2
if [[ $text == *% ]]; then
((ret=10#${text%'%'}*max/100))
else
((ret=10#$text))
fi
((ret>max)) && ret=max
}
function ble/color/.name2color/.wrap {
local text=$1 max=$2
if [[ $text == *% ]]; then
((ret=10#${text%'%'}*max/100))
else
((ret=10#$text))
fi
((ret%=max))
}
function ble/color/.hxx2color {
local H=$1 Min=$2 Range=$3 Unit=$4
local h1 h2 x=$Min y=$Min z=$Min
((h1=H%120,h2=120-h1,
x+=Range*(h2<60?h2:60)/60,
y+=Range*(h1<60?h1:60)/60))
((x=x*255/Unit,
y=y*255/Unit,
z=z*255/Unit))
case $((H/120)) in
(0) local R=$x G=$y B=$z ;;
(1) local R=$z G=$x B=$y ;;
(2) local R=$y G=$z B=$x ;;
esac
((ret=1<<24|R<<16|G<<8|B))
}
function ble/color/.hsl2color {
local H=$1 S=$2 L=$3 Unit=$4
local Range=$((2*(L<=Unit/2?L:Unit-L)*S/Unit))
local Min=$((L-Range/2))
ble/color/.hxx2color "$H" "$Min" "$Range" "$Unit"
}
function ble/color/.hsb2color {
local H=$1 S=$2 B=$3 Unit=$4
local Range=$((B*S/Unit))
local Min=$((B-Range))
ble/color/.hxx2color "$H" "$Min" "$Range" "$Unit"
}
## @fn ble/color/.name2color colorName
## @var[out] ret
function ble/color/.name2color {
local colorName=$1
if [[ ! ${colorName//[0-9]} ]]; then
((ret=10#$colorName&255))
elif [[ $colorName == '#'* ]]; then
if local rex='^#[0-9a-fA-F]{3}$'; [[ $colorName =~ $rex ]]; then
let "ret=1<<24|16#${colorName:1:1}*0x11<<16|16#${colorName:2:1}*0x11<<8|16#${colorName:3:1}*0x11"
elif rex='^#[0-9a-fA-F]{6}$'; [[ $colorName =~ $rex ]]; then
let "ret=1<<24|16#${colorName:1:2}<<16|16#${colorName:3:2}<<8|16#${colorName:5:2}"
else
ret=-1
fi
elif [[ $colorName == *:* ]]; then
if local rex='^rgb:([0-9]+%?)/([0-9]+%?)/([0-9]+%?)$'; [[ $colorName =~ $rex ]]; then
ble/color/.name2color/.clamp "${BASH_REMATCH[1]}" 255; local R=$ret
ble/color/.name2color/.clamp "${BASH_REMATCH[2]}" 255; local G=$ret
ble/color/.name2color/.clamp "${BASH_REMATCH[3]}" 255; local B=$ret
((ret=1<<24|R<<16|G<<8|B))
elif
local rex1='^cmy:([0-9]+%?)/([0-9]+%?)/([0-9]+%?)$'
local rex2='^cmyk:([0-9]+%?)/([0-9]+%?)/([0-9]+%?)/([0-9]+%?)$'
[[ $colorName =~ $rex1 || $colorName =~ $rex2 ]]
then
ble/color/.name2color/.clamp "${BASH_REMATCH[1]}" 255; local C=$ret
ble/color/.name2color/.clamp "${BASH_REMATCH[2]}" 255; local M=$ret
ble/color/.name2color/.clamp "${BASH_REMATCH[3]}" 255; local Y=$ret
ble/color/.name2color/.clamp "${BASH_REMATCH[4]:-0}" 255; local K=$ret
local K=$((~K&0xFF))
local R=$(((~C&0xFF)*K/255))
local G=$(((~M&0xFF)*K/255))
local B=$(((~Y&0xFF)*K/255))
((ret=1<<24|R<<16|G<<8|B))
elif rex='^hs[lvb]:([0-9]+)/([0-9]+%)/([0-9]+%)$'; [[ $colorName =~ $rex ]]; then
ble/color/.name2color/.wrap "${BASH_REMATCH[1]}" 360; local H=$ret
ble/color/.name2color/.clamp "${BASH_REMATCH[2]}" 1000; local S=$ret
ble/color/.name2color/.clamp "${BASH_REMATCH[3]}" 1000; local X=$ret
if [[ $colorName == hsl:* ]]; then
ble/color/.hsl2color "$H" "$S" "$X" 1000
else
ble/color/.hsb2color "$H" "$S" "$X" 1000
fi
else
ret=-1
fi
else
case "$colorName" in
(black) ret=0 ;;
(brown) ret=1 ;;
(green) ret=2 ;;
(olive) ret=3 ;;
(navy) ret=4 ;;
(purple) ret=5 ;;
(teal) ret=6 ;;
(silver) ret=7 ;;
(gray) ret=8 ;;
(red) ret=9 ;;
(lime) ret=10 ;;
(yellow) ret=11 ;;
(blue) ret=12 ;;
(magenta) ret=13 ;;
(cyan) ret=14 ;;
(white) ret=15 ;;
(orange) ret=202 ;;
(transparent|default) ret=-1 ;;
(*) ret=-1 ;;
esac
fi
}
function ble/color/.color2name {
if (($1>=0x1000000)); then
ble/util/sprintf ret '#%06x' $(($1&0xFFFFFF))
return 0
fi
((ret=(10#$1&255)))
case $ret in
(0) ret=black ;;
(1) ret=brown ;;
(2) ret=green ;;
(3) ret=olive ;;
(4) ret=navy ;;
(5) ret=purple ;;
(6) ret=teal ;;
(7) ret=silver ;;
(8) ret=gray ;;
(9) ret=red ;;
(10) ret=lime ;;
(11) ret=yellow ;;
(12) ret=blue ;;
(13) ret=magenta ;;
(14) ret=cyan ;;
(15) ret=white ;;
(202) ret=orange ;;
esac
}
## @fn ble/color/convert-color88-to-color256 color
## @param[in] color
## @var[out] ret
function ble/color/convert-color88-to-color256 {
local color=$1
if ((color>=16)); then
if ((color>=80)); then
local L=$((((color-80+1)*25+4)/9))
((color=L==0?16:(L==25?231:232+(L-1))))
else
((color-=16))
local R=$((color/16)) G=$((color/4%4)) B=$((color%4))
((R=(R*5+1)/3,G=(G*5+1)/3,B=(B*5+1)/3,
color=16+R*36+G*6+B))
fi
fi
ret=$color
}
## @fn ble/color/convert-color256-to-color88 color
## @param[in] color
## @var[out] ret
function ble/color/convert-color256-to-color88 {
local color=$1
if ((color>=16)); then
if ((color>=232)); then
local L=$((((color-232+1)*9+12)/25))
((color=L==0?16:(L==9?79:80+(L-1))))
else
((color-=16))
local R=$((color/36)) G=$((color/6%6)) B=$((color%6))
((R=(R*3+2)/5,G=(G*3+2)/5,B=(B*3+2)/5,
color=16+R*16+G*4+B))
fi
fi
ret=$color
}
## @fn ble/color/convert-rgb24-to-color256 R G B
## @param[in] R G B
## 0..255 の階調値
## @var[out] ret
function ble/color/convert-rgb24-to-color256 {
local R=$1 G=$2 B=$3
if ((R==G&&G==B)); then
# xterm 24 grayscale: 10k+8 (0..238)
if ((R<=3)); then
# 6x6x6 cube (0,0,0)
ret=16
elif ((R>=247)); then
# 6x6x6 cube (5,5,5)
ret=231
elif ((R>=92&&(R-92)%40<5)); then
# 6x6x6 cube (1,1,1)-(4,4,4)
((ret=59+43*(R-92)/40))
else
local level=$(((R-3)/10))
((ret=232+(level<=23?level:23)))
fi
else
# xterm 6x6x6 cube: k?55+40k:0
((R=R<=47?0:(R<=95?1:(R-35)/40)))
((G=G<=47?0:(G<=95?1:(G-35)/40)))
((B=B<=47?0:(B<=95?1:(B-35)/40)))
((ret=16+36*R+6*G+B))
fi
}
## @fn ble/color/convert-rgb24-to-color88 R G B
## @param[in] R G B
## 0..255 の階調値
## @var[out] ret
function ble/color/convert-rgb24-to-color88 {
local R=$1 G=$2 B=$3
if ((R==G&&G==B)); then
# xterm 8 grayscale: 46+25k = 46,71,96,121,146,171,196,221
if ((R<=22)); then
ret=16 # 4x4x4 cube (0,0,0)=0:0:0
elif ((R>=239)); then
ret=79 # 4x4x4 cube (3,3,3)=255:255:255
elif ((131<=R&&R<=142)); then
ret=37 # 4x4x4 cube (1,1,1)=139:139:139
elif ((197<=R&&R<=208)); then
ret=58 # 4x4x4 cube (2,2,2)=197:197:197
else
local level=$(((R-34)/25))
((ret=80+(level<=7?level:7)))
fi
else
# xterm 4x4x4 cube: (k?81+58k:0) = 0,139,197,255
((R=R<=69?0:(R<=168?1:(R-52)/58)))
((G=G<=69?0:(G<=168?1:(G-52)/58)))
((B=B<=69?0:(B<=168?1:(B-52)/58)))
((ret=16+16*R+4*G+B))
fi
}
## @fn ble/color/.color2sgrfg color
## @fn ble/color/.color2sgrbg color
## @param[in] color
## 0-255 の値は index color を表します。
## 1XXXXXX の値は 24bit color を表します。
## @var[out] ret
function ble/color/.color2sgr-impl {
local ccode=$1 prefix=$2 # 3 for fg, 4 for bg
if ((ccode<0)); then
ret=${prefix}9
elif ((ccode<16&&ccode<_ble_term_colors)); then
if ((prefix==4)); then
ret=${_ble_term_sgr_ab[ccode]}
else
ret=${_ble_term_sgr_af[ccode]}
fi
elif ((ccode<256)); then
if ((_ble_term_colors>=256||bleopt_term_index_colors==256)); then
ret="${prefix}8;5;$ccode"
elif ((_ble_term_colors>=88||bleopt_term_index_colors==88)); then
ble/color/convert-color256-to-color88 "$ccode"
ret="${prefix}8;5;$ret"
elif ((ccode<_ble_term_colors||ccode<bleopt_term_index_colors)); then
ret="${prefix}8;5;$ccode"
elif ((_ble_term_colors>=16||_ble_term_colors==8)); then
if ((ccode>=16)); then
if ((ccode>=232)); then
local L=$((((ccode-232+1)*3+12)/25))
((ccode=L==0?0:(L==1?8:(L==2?7:15))))
else
((ccode-=16))
local R=$((ccode/36)) G=$((ccode/6%6)) B=$((ccode%6))
if ((R==G&&G==B)); then
local L=$(((R*3+2)/5))
((ccode=L==0?0:(L==1?8:(L==2?7:15))))
else
local min max
((R<G?(min=R,max=G):(min=G,max=R),
B<min?(min=B):(B>max&&(max=B))))
local Range=$((max-min))
((R=(R-min+Range/2)/Range,
G=(G-min+Range/2)/Range,
B=(B-min+Range/2)/Range,
ccode=R+G*2+B*4+(min+max>=5?8:0)))
fi
fi
fi
((_ble_term_colors==8&&ccode>=8&&(ccode-=8)))
if ((prefix==4)); then
ret=${_ble_term_sgr_ab[ccode]}
else
ret=${_ble_term_sgr_af[ccode]}
fi
else
ret=${prefix}9
fi
elif ((0x1000000<=ccode&&ccode<0x2000000)); then
# 24bit True Colors
local R=$((ccode>>16&0xFF)) G=$((ccode>>8&0xFF)) B=$((ccode&0xFF))
if [[ $bleopt_term_true_colors == semicolon ]]; then
ret="${prefix}8;2;$R;$G;$B"
elif [[ $bleopt_term_true_colors == colon ]]; then
ret="${prefix}8:2:$R:$G:$B"
elif ((_ble_term_colors>=256||bleopt_term_index_colors==256)); then
ble/color/convert-rgb24-to-color256 "$R" "$G" "$B"
ret="${prefix}8;5;$ret"
elif ((_ble_term_colors>=88||bleopt_term_index_colors==88)); then
ble/color/convert-rgb24-to-color88 "$R" "$G" "$B"
ret="${prefix}8;5;$ret"
else
ble/color/convert-rgb24-to-color256 "$R" "$G" "$B"
ble/color/.color2sgr-impl "$ret" "$prefix"
fi
else
ret=${prefix}9
fi
}
## @fn ble/color/.color2sgrfg color_code
## @var[out] ret
function ble/color/.color2sgrfg {
ble/color/.color2sgr-impl "$1" 3
}
## @fn ble/color/.color2sgrbg color_code
## @var[out] ret
function ble/color/.color2sgrbg {
ble/color/.color2sgr-impl "$1" 4
}
#------------------------------------------------------------------------------
## @fn ble/color/read-sgrspec/.arg-next
## @var[in ] fields
## @var[in,out] j
## @var[ out] arg
function ble/color/read-sgrspec/.arg-next {
local _var=arg _ret
if [[ $1 == -v ]]; then
_var=$2
shift 2
fi
if ((j<${#fields[*]})); then
((_ret=10#${fields[j++]}))
else
((i++))
((_ret=10#${specs[i]%%:*}))
fi
(($_var=_ret))
}
## @fn ble-color/read-sgrspec sgrspec opts
## @param[in] sgrspec
## @var[in,out] g
function ble/color/read-sgrspec {
local specs i iN
ble/string#split specs \; "$1"
for ((i=0,iN=${#specs[@]};i<iN;i++)); do
local spec=${specs[i]} fields
ble/string#split fields : "$spec"
local arg=$((10#${fields[0]}))
if ((arg==0)); then
g=0
continue
elif [[ :$opts: != *:ansi:* ]]; then
[[ ${_ble_term_sgr_term2ansi[arg]} ]] &&
arg=${_ble_term_sgr_term2ansi[arg]}
fi
if ((30<=arg&&arg<50)); then
# colors
if ((30<=arg&&arg<38)); then
local color=$((arg-30))
ble/color/g.setfg-index "$color"
elif ((40<=arg&&arg<48)); then
local color=$((arg-40))
ble/color/g.setbg-index "$color"
elif ((arg==38)); then
local j=1 color cspace
ble/color/read-sgrspec/.arg-next -v cspace
if ((cspace==5)); then
ble/color/read-sgrspec/.arg-next -v color
if [[ :$opts: != *:ansi:* ]] && ((bleopt_term_index_colors==88)); then
local ret; ble/color/convert-color88-to-color256 "$color"; color=$ret
fi
ble/color/g.setfg-index "$color"
elif ((cspace==2)); then
local S R G B
((${#fields[@]}>5)) &&
ble/color/read-sgrspec/.arg-next -v S
ble/color/read-sgrspec/.arg-next -v R
ble/color/read-sgrspec/.arg-next -v G
ble/color/read-sgrspec/.arg-next -v B
ble/color/g.setfg-rgb "$R" "$G" "$B"
elif ((cspace==3||cspace==4)); then
local S C M Y K=0
((${#fields[@]}>2+cspace)) &&
ble/color/read-sgrspec/.arg-next -v S
ble/color/read-sgrspec/.arg-next -v C
ble/color/read-sgrspec/.arg-next -v M
ble/color/read-sgrspec/.arg-next -v Y
((cspace==4)) &&
ble/color/read-sgrspec/.arg-next -v K
ble/color/g.setfg-cmyk "$C" "$M" "$Y" "$K"
else
ble/color/g.setfg-clear
fi
elif ((arg==48)); then
local j=1 color cspace
ble/color/read-sgrspec/.arg-next -v cspace
if ((cspace==5)); then
ble/color/read-sgrspec/.arg-next -v color
if [[ :$opts: != *:ansi:* ]] && ((bleopt_term_index_colors==88)); then
local ret; ble/color/convert-color88-to-color256 "$color"; color=$ret
fi
ble/color/g.setbg-index "$color"
elif ((cspace==2)); then
local S R G B
((${#fields[@]}>5)) &&
ble/color/read-sgrspec/.arg-next -v S
ble/color/read-sgrspec/.arg-next -v R
ble/color/read-sgrspec/.arg-next -v G
ble/color/read-sgrspec/.arg-next -v B
ble/color/g.setbg-rgb "$R" "$G" "$B"
elif ((cspace==3||cspace==4)); then
local S C M Y K=0
((${#fields[@]}>2+cspace)) &&
ble/color/read-sgrspec/.arg-next -v S
ble/color/read-sgrspec/.arg-next -v C
ble/color/read-sgrspec/.arg-next -v M
ble/color/read-sgrspec/.arg-next -v Y
((cspace==4)) &&
ble/color/read-sgrspec/.arg-next -v K
ble/color/g.setbg-cmyk "$C" "$M" "$Y" "$K"
else
ble/color/g.setbg-clear
fi
elif ((arg==39)); then
ble/color/g.setfg-clear
elif ((arg==49)); then
ble/color/g.setbg-clear
fi
elif ((90<=arg&&arg<98)); then
local color=$((arg-90+8))
ble/color/g.setfg-index "$color"
elif ((100<=arg&&arg<108)); then
local color=$((arg-100+8))
ble/color/g.setbg-index "$color"
elif ((arg==1)); then
((g|=_ble_color_gflags_Bold))
elif ((arg==22)); then
((g&=~_ble_color_gflags_Bold))
elif ((arg==4)); then
((g|=_ble_color_gflags_Underline))
elif ((arg==24)); then
((g&=~_ble_color_gflags_Underline))
elif ((arg==7)); then
((g|=_ble_color_gflags_Revert))
elif ((arg==27)); then
((g&=~_ble_color_gflags_Revert))
elif ((arg==3)); then
((g|=_ble_color_gflags_Italic))
elif ((arg==23)); then
((g&=~_ble_color_gflags_Italic))
elif ((arg==5)); then
((g|=_ble_color_gflags_Blink))
elif ((arg==25)); then
((g&=~_ble_color_gflags_Blink))
elif ((arg==8)); then
((g|=_ble_color_gflags_Invisible))
elif ((arg==28)); then
((g&=~_ble_color_gflags_Invisible))
elif ((arg==9)); then
((g|=_ble_color_gflags_Strike))
elif ((arg==29)); then
((g&=~_ble_color_gflags_Strike))
fi
done
}
## @fn ble/color/sgrspec2g str
## SGRに対する引数から描画属性を構築します。
## @var[out] ret
function ble/color/sgrspec2g {
local g=0
ble/color/read-sgrspec "$1"
ret=$g
}
## @fn ble/color/ansi2g str
## ANSI制御シーケンスから描画属性を構築します。
## Note: canvas.sh を読み込んで以降でないと使えません。
## @var[out] ret
function ble/color/ansi2g {
local x=0 y=0 g=0
ble/function#try ble/canvas/trace "$1" # -> ret
ret=$g
}
#------------------------------------------------------------------------------
# _ble_faces
# 遅延初期化登録
# @hook color_defface_load (defined in src/def.sh)
# @hook color_setface_load (defined in src/def.sh)
# 遅延初期化
if [[ ! ${_ble_faces_count-} ]]; then # reload #D0875
_ble_faces_count=0
_ble_faces=()
fi
## @fn ble/color/setface/.check-argument
## @var[out] ext
function ble/color/setface/.check-argument {
local rex='^[a-zA-Z0-9_]+$'
[[ $# == 2 && $1 =~ $rex && $2 ]] && return 0
local flags=a
while (($#)); do
local arg=$1; shift
case $arg in
(--help) flags=H$flags ;;
(--color|--color=always) flags=c${flags//[ac]} ;;
(--color=auto) flags=a${flags//[ac]} ;;
(--color=never) flags=${flags//[ac]} ;;
(-*)
ble/util/print "${FUNCNAME[1]}: unrecognized option '$arg'." >&2
flags=E$flags ;;
(*)
ble/util/print "${FUNCNAME[1]}: unrecognized argument '$arg'." >&2
flags=E$flags ;;
esac
done
if [[ $flags == *E* ]]; then
ext=2; return 1
elif [[ $flags == *H* ]]; then
ble/util/print-lines \
"usage: $name FACE_NAME [TYPE:]SPEC" \
' Set face.' \
'' \
' TYPE Specifies the format of SPEC. The following values are available.' \
' gspec Comma separated graphic attribute list' \
' g Integer value' \
' ref Face name or id (reference)' \
' copy Face name or id (copy value)' \
' sgrspec Parameters to the control function SGR' \
' ansi ANSI Sequences' >&2
ext=0; return 1
fi
local opts=
[[ $flags == *c* || $flags == *a* && -t 1 ]] && opts=$opts:color
ble/color/list-faces "$opts"; ext=$?; return 1
}
function ble-color-defface {
local ext; ble/color/setface/.check-argument "$@" || return "$ext"
ble/color/defface "$@"
}
function ble-color-setface {
local ext; ble/color/setface/.check-argument "$@" || return "$ext"
ble/color/setface "$@"
}
# 遅延関数 (後で上書き)
function ble/color/defface { local q=\' Q="'\''"; blehook color_defface_load+="ble/color/defface '${1//$q/$Q}' '${2//$q/$Q}'"; }
function ble/color/setface { local q=\' Q="'\''"; blehook color_setface_load+="ble/color/setface '${1//$q/$Q}' '${2//$q/$Q}'"; }
function ble/color/face2g { ble/color/initialize-faces && ble/color/face2g "$@"; }
function ble/color/face2sgr { ble/color/initialize-faces && ble/color/face2sgr "$@"; }
function ble/color/iface2g { ble/color/initialize-faces && ble/color/iface2g "$@"; }
function ble/color/iface2sgr { ble/color/initialize-faces && ble/color/iface2sgr "$@"; }
# 遅延初期化子
_ble_color_faces_initialized=
function ble/color/initialize-faces {
local _ble_color_faces_initializing=1
local -a _ble_color_faces_errors=()
## @fn ble/color/face2g face
## @var[out] ret
function ble/color/face2g {
((ret=_ble_faces[_ble_faces__$1]))