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bin: make color index more readable

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Use white text for darker colors and black text for lighter colors.

Also, now the `colors256` script became redundant, so it's removed.
This commit is contained in:
Fernando Schauenburg 2024-07-14 21:41:20 +02:00
parent 82979b2153
commit d7b6938a74
2 changed files with 18 additions and 42 deletions
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24
bin/colors
View file

@ -22,7 +22,6 @@ bg_256() { printf '\e[48;5;%sm' "$1"; }
fg_rgb() { printf '\e[38;2;%s;%s;%sm' "$1" "$2" "$3"; }
bg_rgb() { printf '\e[48;2;%s;%s;%sm' "$1" "$2" "$3"; }
rgb_from_hex() {
echo "$1" | awk '{
r="0x"substr($0, 2, 2)
@ -41,41 +40,53 @@ reset() { printf '\e[0m'; }
fg_reset() { printf '\e[39m'; }
bg_reset() { printf '\e[49m'; }
indent() { printf ' '; }
indent() { printf ' '; }
newline() { printf '%b\n' '\e[0m'; }
indexed_16() {
echo "16 indexed colors:"
black=0
white=15
for i in 0 1; do
[ "$i" -eq 0 ] && fg="$white" || fg="$black"
indent
for j in $(seq 0 7); do
n=$((8*i + j))
bg_16 "$n"; fg_16 0; printf ' %2d ' "$n"
bg_16 "$n"; fg_16 "$fg"; printf ' %2d ' "$n"
done
newline
done
}
indexed_256() {
echo "256 indexed colors:"
black=232
white=255
# 16 standard colors
for i in 0 1; do
[ "$i" -eq 0 ] && fg="$white" || fg="$black"
indent
for j in $(seq 0 7); do
n=$((8*i + j))
bg_256 "$n"; fg_16 0; printf ' %3d ' "$n"
bg_256 "$n"; fg_256 "$fg"; printf ' %3d ' "$n"
done
newline
done
# 216 colors
for i in 0 18; do
[ "$i" -eq 0 ] && fg="$white" || fg="$black"
for j in $(seq 0 5); do
indent
for k in $(seq $i $(( i + 17 ))); do
n=$((16 + 36*j + k))
bg_256 "$n"; fg_16 0; printf '%3d ' "$n"
bg_256 "$n"; fg_256 "$fg"; printf '%3d ' "$n"
done
newline
done
@ -84,9 +95,10 @@ indexed_256() {
# 24 grayscale colors
for i in 0 1; do
indent
[ "$i" -eq 0 ] && fg="$white" || fg="$black"
for j in $(seq 0 11); do
n=$((232 + 12*i + j))
bg_256 "$n"; fg_16 0; printf ' %3d ' "$n"
bg_256 "$n"; fg_256 "$fg"; printf ' %3d ' "$n"
done
newline
done

36
bin/colors256
View file

@ -1,36 +0,0 @@
#!/bin/sh
# Print all 256 colors
black="\e[38;5;232m"
white="\e[38;5;255m"
# 16 standard colors -> 0...15
for i in $(seq 0 15); do
[ $i -lt 8 ] && fg="$white" || fg="$black"
bg="\e[48;5;${i}m"
printf '%b%b %2d ' "$fg" "$bg" "$i"
done
printf '%b\n' '\e[0m'
# 216 colors -> 16...231
for i in $(seq 0 5); do
for j in $(seq 0 35); do
n=$(( 16 + 36 * i + j ))
[ $j -lt 18 ] && fg="$white" || fg="$black"
bg="\e[48;5;${n}m"
printf '%b%b%4d' "$fg" "$bg" "$n"
done
printf '%b\n' '\e[0m'
done
# 24 grayscale colors -> 232...255
for i in $(seq 0 23); do
n=$(( 232 + i ))
[ $i -lt 12 ] && fg="$white" || fg="$black"
bg="\e[48;5;${n}m"
printf '%b%b%4d ' "$fg" "$bg" "$n"
done
printf '%b\n' '\e[0m'