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bin: make colors256 much faster and have a better layout

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This commit is contained in:
Fernando Schauenburg 2023-07-23 02:31:10 +02:00
parent 9c1f441a1b
commit 696367cf81
1 changed files with 31 additions and 5 deletions
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34
bin/colors256
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@ -1,11 +1,37 @@
#!/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
for j in $(seq 0 15); do
n=$(( 16 * i + j ))
printf '%s %3d ' "$(tput setab $n)" "$n"
[ $i -lt 8 ] && fg="$white" || fg="$black"
bg="\e[48;5;${i}m"
printf '%b%b %2d ' "$fg" "$bg" "$i"
done
printf '%s\n' "$(tput sgr0)"
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'