colortest

#!/usr/bin/env sh

if [ -n "$BASE16_THEME" ]; then
  current_theme="base16-$BASE16_THEME"
fi

if [ -n "$BASE24_THEME" ]; then
  current_theme="base24-$BASE24_THEME"
fi

theme_name="${1:-${current_theme:-default-dark}}"
theme_path="$(dirname "$0")/scripts/$theme_name.sh"

if [ -f "$theme_path" ]; then
  . "$theme_path"
  eval "$(awk '/^color00=/,/^$/ {print}' "$theme_path" | sed 's/#.*//')"
else
  printf "No theme file %s found\n" "$theme_path"
fi

case "$theme_name" in
  "base16"*) 
    color_variables="\
      base00 \
      base08 \
      base0B \
      base0A \
      base0D \
      base0E \
      base0C \
      base05 \
      base03 \
      base08 \
      base0B \
      base0A \
      base0D \
      base0E \
      base0C \
      base07 \
      base09 \
      base0F \
      base01 \
      base02 \
      base04 \
      base06";;
  "base24"*) 
    color_variables="\
      base00 \
      base08 \
      base0B \
      base09 \
      base0D \
      base0E \
      base0C \
      base06 \
      base02 \
      base12 \
      base14 \
      base13 \
      base16 \
      base17 \
      base15 \
      base07 \
      base09 \
      base0F \
      base01 \
      base02 \
      base04 \
      base06";;
*) echo "Theme name should start with the scheme system, eg \"base16-oceanicnext\" or \"base24-chalk\": $theme_name" && exit 1 ;;
esac

ansi_labels="\
  Black \
  Red \
  Green \
  Yellow \
  Blue \
  Magenta \
  Cyan \
  White \
  Bright_Black \
  Bright_Red \
  Bright_Green \
  Bright_Yellow \
  Bright_Blue \
  Bright_Magenta \
  Bright_Cyan \
  Bright_White"

set -- $color_variables
i=0
while [ $i -lt 22 ]; do
  color_variable="color$(printf "%02d" $i)"
  eval current_color=\$$color_variable
  current_color=$(printf "%s" "$current_color" | tr 'a-f' 'A-F' | tr -d '/') # POSIX-compliant uppercase & remove slashes
  
  # Fetching the color name and ANSI label based on position
  base16_color_name=$(printf "%s\n" $color_variables | sed -n "$((i + 1))p")
  ansi_label=$(printf "%s\n" $ansi_labels | sed -n "$((i + 1))p")
  
  # Displaying the color block
  block=$(printf "\033[48;5;%dm___________________________" $i)
  foreground=$(printf "\033[38;5;%dm%s" $i "$color_variable")
  printf "%s %s %s %-30s %s\033[0m\n" "$foreground" "$base16_color_name" "${current_color:-space}" "${ansi_label:-""}" "$block"
  
  i=$((i + 1))
done